/src/libcaes/libcaes/libcaes_context.c
Line | Count | Source |
1 | | /* |
2 | | * AES de/encryption context functions |
3 | | * |
4 | | * Copyright (C) 2011-2026, Joachim Metz <joachim.metz@gmail.com> |
5 | | * |
6 | | * Refer to AUTHORS for acknowledgements. |
7 | | * |
8 | | * This program is free software: you can redistribute it and/or modify |
9 | | * it under the terms of the GNU Lesser General Public License as published by |
10 | | * the Free Software Foundation, either version 3 of the License, or |
11 | | * (at your option) any later version. |
12 | | * |
13 | | * This program is distributed in the hope that it will be useful, |
14 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | | * GNU General Public License for more details. |
17 | | * |
18 | | * You should have received a copy of the GNU Lesser General Public License |
19 | | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
20 | | */ |
21 | | |
22 | | #include <common.h> |
23 | | #include <byte_stream.h> |
24 | | #include <memory.h> |
25 | | #include <types.h> |
26 | | |
27 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) |
28 | | #include <openssl/sha.h> |
29 | | |
30 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) |
31 | | #include <openssl/err.h> |
32 | | #include <openssl/evp.h> |
33 | | #endif |
34 | | |
35 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
36 | | #include <openssl/core_names.h> |
37 | | #endif |
38 | | |
39 | | #include "libcaes_context.h" |
40 | | #include "libcaes_definitions.h" |
41 | | #include "libcaes_libcerror.h" |
42 | | #include "libcaes_types.h" |
43 | | |
44 | | #if !defined( LIBCAES_HAVE_AES_SUPPORT ) |
45 | | |
46 | | /* FIPS-197 compliant AES encryption functions |
47 | | * |
48 | | * The AES block cipher was designed by Vincent Rijmen and Joan Daemen. |
49 | | * |
50 | | * http://csrc.nist.gov/encryption/aes/rijndael/Rijndael.pdf |
51 | | * http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf |
52 | | */ |
53 | | |
54 | | #define libcaes_calculate_forward_substitution_value( value, index0, index1, index2, index3 ) \ |
55 | 512 | value = libcaes_forward_substitution_box[ index3 ]; \ |
56 | 512 | value <<= 8; \ |
57 | 512 | value |= libcaes_forward_substitution_box[ index2 ]; \ |
58 | 512 | value <<= 8; \ |
59 | 512 | value |= libcaes_forward_substitution_box[ index1 ]; \ |
60 | 512 | value <<= 8; \ |
61 | 512 | value |= libcaes_forward_substitution_box[ index0 ]; |
62 | | |
63 | | #define libcaes_calculate_forward_table_value( value, index0, index1, index2, index3 ) \ |
64 | 4.60k | value = libcaes_forward_table0[ index0 ]; \ |
65 | 4.60k | value ^= libcaes_forward_table1[ index1 ]; \ |
66 | 4.60k | value ^= libcaes_forward_table2[ index2 ]; \ |
67 | 4.60k | value ^= libcaes_forward_table3[ index3 ]; |
68 | | |
69 | | #define libcaes_calculate_reverse_substitution_value( value, index0, index1, index2, index3 ) \ |
70 | 0 | value = libcaes_reverse_substitution_box[ index3 ]; \ |
71 | 0 | value <<= 8; \ |
72 | 0 | value |= libcaes_reverse_substitution_box[ index2 ]; \ |
73 | 0 | value <<= 8; \ |
74 | 0 | value |= libcaes_reverse_substitution_box[ index1 ]; \ |
75 | 0 | value <<= 8; \ |
76 | 0 | value |= libcaes_reverse_substitution_box[ index0 ]; |
77 | | |
78 | | #define libcaes_calculate_reverse_table_value( value, index0, index1, index2, index3 ) \ |
79 | 0 | value = libcaes_reverse_table0[ index0 ]; \ |
80 | 0 | value ^= libcaes_reverse_table1[ index1 ]; \ |
81 | 0 | value ^= libcaes_reverse_table2[ index2 ]; \ |
82 | 0 | value ^= libcaes_reverse_table3[ index3 ]; |
83 | | |
84 | | #define libcaes_calculate_forward_substitution_round( round_keys, values_32bit, cipher_values_32bit, substitution_value ) \ |
85 | 128 | libcaes_calculate_forward_substitution_value( \ |
86 | 128 | substitution_value, \ |
87 | 128 | ( cipher_values_32bit[ 0 ] & 0xff ), \ |
88 | 128 | ( ( cipher_values_32bit[ 1 ] >> 8 ) & 0xff ), \ |
89 | 128 | ( ( cipher_values_32bit[ 2 ] >> 16 ) & 0xff ), \ |
90 | 128 | ( ( cipher_values_32bit[ 3 ] >> 24 ) & 0xff ) ); \ |
91 | 128 | \ |
92 | 128 | values_32bit[ 0 ] = round_keys[ 0 ] ^ substitution_value; \ |
93 | 128 | \ |
94 | 128 | libcaes_calculate_forward_substitution_value( \ |
95 | 128 | substitution_value, \ |
96 | 128 | ( cipher_values_32bit[ 1 ] & 0xff ), \ |
97 | 128 | ( ( cipher_values_32bit[ 2 ] >> 8 ) & 0xff ), \ |
98 | 128 | ( ( cipher_values_32bit[ 3 ] >> 16 ) & 0xff ), \ |
99 | 128 | ( ( cipher_values_32bit[ 0 ] >> 24 ) & 0xff ) ); \ |
100 | 128 | \ |
101 | 128 | values_32bit[ 1 ] = round_keys[ 1 ] ^ substitution_value; \ |
102 | 128 | \ |
103 | 128 | libcaes_calculate_forward_substitution_value( \ |
104 | 128 | substitution_value, \ |
105 | 128 | ( cipher_values_32bit[ 2 ] & 0xff ), \ |
106 | 128 | ( ( cipher_values_32bit[ 3 ] >> 8 ) & 0xff ), \ |
107 | 128 | ( ( cipher_values_32bit[ 0 ] >> 16 ) & 0xff ), \ |
108 | 128 | ( ( cipher_values_32bit[ 1 ] >> 24 ) & 0xff ) ); \ |
109 | 128 | \ |
110 | 128 | values_32bit[ 2 ] = round_keys[ 2 ] ^ substitution_value; \ |
111 | 128 | \ |
112 | 128 | libcaes_calculate_forward_substitution_value( \ |
113 | 128 | substitution_value, \ |
114 | 128 | ( cipher_values_32bit[ 3 ] & 0xff ), \ |
115 | 128 | ( ( cipher_values_32bit[ 0 ] >> 8 ) & 0xff ), \ |
116 | 128 | ( ( cipher_values_32bit[ 1 ] >> 16 ) & 0xff ), \ |
117 | 128 | ( ( cipher_values_32bit[ 2 ] >> 24 ) & 0xff ) ); \ |
118 | 128 | \ |
119 | 128 | values_32bit[ 3 ] = round_keys[ 3 ] ^ substitution_value; |
120 | | |
121 | | #define libcaes_calculate_forward_table_round( round_keys, values_32bit, cipher_values_32bit, table_value ) \ |
122 | 1.15k | libcaes_calculate_forward_table_value( \ |
123 | 1.15k | table_value, \ |
124 | 1.15k | ( cipher_values_32bit[ 0 ] & 0xff ), \ |
125 | 1.15k | ( ( cipher_values_32bit[ 1 ] >> 8 ) & 0xff ), \ |
126 | 1.15k | ( ( cipher_values_32bit[ 2 ] >> 16 ) & 0xff ), \ |
127 | 1.15k | ( ( cipher_values_32bit[ 3 ] >> 24 ) & 0xff ) ); \ |
128 | 1.15k | \ |
129 | 1.15k | values_32bit[ 0 ] = round_keys[ 0 ] ^ table_value; \ |
130 | 1.15k | \ |
131 | 1.15k | libcaes_calculate_forward_table_value( \ |
132 | 1.15k | table_value, \ |
133 | 1.15k | ( cipher_values_32bit[ 1 ] & 0xff ), \ |
134 | 1.15k | ( ( cipher_values_32bit[ 2 ] >> 8 ) & 0xff ), \ |
135 | 1.15k | ( ( cipher_values_32bit[ 3 ] >> 16 ) & 0xff ), \ |
136 | 1.15k | ( ( cipher_values_32bit[ 0 ] >> 24 ) & 0xff ) ); \ |
137 | 1.15k | \ |
138 | 1.15k | values_32bit[ 1 ] = round_keys[ 1 ] ^ table_value; \ |
139 | 1.15k | \ |
140 | 1.15k | libcaes_calculate_forward_table_value( \ |
141 | 1.15k | table_value, \ |
142 | 1.15k | ( cipher_values_32bit[ 2 ] & 0xff ), \ |
143 | 1.15k | ( ( cipher_values_32bit[ 3 ] >> 8 ) & 0xff ), \ |
144 | 1.15k | ( ( cipher_values_32bit[ 0 ] >> 16 ) & 0xff ), \ |
145 | 1.15k | ( ( cipher_values_32bit[ 1 ] >> 24 ) & 0xff ) ); \ |
146 | 1.15k | \ |
147 | 1.15k | values_32bit[ 2 ] = round_keys[ 2 ] ^ table_value; \ |
148 | 1.15k | \ |
149 | 1.15k | libcaes_calculate_forward_table_value( \ |
150 | 1.15k | table_value, \ |
151 | 1.15k | ( cipher_values_32bit[ 3 ] & 0xff ), \ |
152 | 1.15k | ( ( cipher_values_32bit[ 0 ] >> 8 ) & 0xff ), \ |
153 | 1.15k | ( ( cipher_values_32bit[ 1 ] >> 16 ) & 0xff ), \ |
154 | 1.15k | ( ( cipher_values_32bit[ 2 ] >> 24 ) & 0xff ) ); \ |
155 | 1.15k | \ |
156 | 1.15k | values_32bit[ 3 ] = round_keys[ 3 ] ^ table_value; |
157 | | |
158 | | #define libcaes_calculate_reverse_substitution_round( round_keys, values_32bit, cipher_values_32bit, substitution_value ) \ |
159 | 0 | libcaes_calculate_reverse_substitution_value( \ |
160 | 0 | substitution_value, \ |
161 | 0 | ( cipher_values_32bit[ 0 ] & 0xff ), \ |
162 | 0 | ( ( cipher_values_32bit[ 3 ] >> 8 ) & 0xff ), \ |
163 | 0 | ( ( cipher_values_32bit[ 2 ] >> 16 ) & 0xff ), \ |
164 | 0 | ( ( cipher_values_32bit[ 1 ] >> 24 ) & 0xff ) ); \ |
165 | 0 | \ |
166 | 0 | values_32bit[ 0 ] = round_keys[ 0 ] ^ substitution_value; \ |
167 | 0 | \ |
168 | 0 | libcaes_calculate_reverse_substitution_value( \ |
169 | 0 | substitution_value, \ |
170 | 0 | ( cipher_values_32bit[ 1 ] & 0xff ), \ |
171 | 0 | ( ( cipher_values_32bit[ 0 ] >> 8 ) & 0xff ), \ |
172 | 0 | ( ( cipher_values_32bit[ 3 ] >> 16 ) & 0xff ), \ |
173 | 0 | ( ( cipher_values_32bit[ 2 ] >> 24 ) & 0xff ) ); \ |
174 | 0 | \ |
175 | 0 | values_32bit[ 1 ] = round_keys[ 1 ] ^ substitution_value; \ |
176 | 0 | \ |
177 | 0 | libcaes_calculate_reverse_substitution_value( \ |
178 | 0 | substitution_value, \ |
179 | 0 | ( cipher_values_32bit[ 2 ] & 0xff ), \ |
180 | 0 | ( ( cipher_values_32bit[ 1 ] >> 8 ) & 0xff ), \ |
181 | 0 | ( ( cipher_values_32bit[ 0 ] >> 16 ) & 0xff ), \ |
182 | 0 | ( ( cipher_values_32bit[ 3 ] >> 24 ) & 0xff ) ); \ |
183 | 0 | \ |
184 | 0 | values_32bit[ 2 ] = round_keys[ 2 ] ^ substitution_value; \ |
185 | 0 | \ |
186 | 0 | libcaes_calculate_reverse_substitution_value( \ |
187 | 0 | substitution_value, \ |
188 | 0 | ( cipher_values_32bit[ 3 ] & 0xff ), \ |
189 | 0 | ( ( cipher_values_32bit[ 2 ] >> 8 ) & 0xff ), \ |
190 | 0 | ( ( cipher_values_32bit[ 1 ] >> 16 ) & 0xff ), \ |
191 | 0 | ( ( cipher_values_32bit[ 0 ] >> 24 ) & 0xff ) ); \ |
192 | 0 | \ |
193 | 0 | values_32bit[ 3 ] = round_keys[ 3 ] ^ substitution_value; |
194 | | |
195 | | #define libcaes_calculate_reverse_table_round( round_keys, values_32bit, cipher_values_32bit, table_value ) \ |
196 | 0 | libcaes_calculate_reverse_table_value( \ |
197 | 0 | table_value, \ |
198 | 0 | ( cipher_values_32bit[ 0 ] & 0xff ), \ |
199 | 0 | ( ( cipher_values_32bit[ 3 ] >> 8 ) & 0xff ), \ |
200 | 0 | ( ( cipher_values_32bit[ 2 ] >> 16 ) & 0xff ), \ |
201 | 0 | ( ( cipher_values_32bit[ 1 ] >> 24 ) & 0xff ) ); \ |
202 | 0 | \ |
203 | 0 | values_32bit[ 0 ] = round_keys[ 0 ] ^ table_value; \ |
204 | 0 | \ |
205 | 0 | libcaes_calculate_reverse_table_value( \ |
206 | 0 | table_value, \ |
207 | 0 | ( cipher_values_32bit[ 1 ] & 0xff ), \ |
208 | 0 | ( ( cipher_values_32bit[ 0 ] >> 8 ) & 0xff ), \ |
209 | 0 | ( ( cipher_values_32bit[ 3 ] >> 16 ) & 0xff ), \ |
210 | 0 | ( ( cipher_values_32bit[ 2 ] >> 24 ) & 0xff ) ); \ |
211 | 0 | \ |
212 | 0 | values_32bit[ 1 ] = round_keys[ 1 ] ^ table_value; \ |
213 | 0 | \ |
214 | 0 | libcaes_calculate_reverse_table_value( \ |
215 | 0 | table_value, \ |
216 | 0 | ( cipher_values_32bit[ 2 ] & 0xff ), \ |
217 | 0 | ( ( cipher_values_32bit[ 1 ] >> 8 ) & 0xff ), \ |
218 | 0 | ( ( cipher_values_32bit[ 0 ] >> 16 ) & 0xff ), \ |
219 | 0 | ( ( cipher_values_32bit[ 3 ] >> 24 ) & 0xff ) ); \ |
220 | 0 | \ |
221 | 0 | values_32bit[ 2 ] = round_keys[ 2 ] ^ table_value; \ |
222 | 0 | \ |
223 | 0 | libcaes_calculate_reverse_table_value( \ |
224 | 0 | table_value, \ |
225 | 0 | ( cipher_values_32bit[ 3 ] & 0xff ), \ |
226 | 0 | ( ( cipher_values_32bit[ 2 ] >> 8 ) & 0xff ), \ |
227 | 0 | ( ( cipher_values_32bit[ 1 ] >> 16 ) & 0xff ), \ |
228 | 0 | ( ( cipher_values_32bit[ 0 ] >> 24 ) & 0xff ) ); \ |
229 | 0 | \ |
230 | 0 | values_32bit[ 3 ] = round_keys[ 3 ] ^ table_value; |
231 | | |
232 | | /* Forward S-box & tables |
233 | | */ |
234 | | static uint8_t libcaes_forward_substitution_box[ 256 ]; |
235 | | |
236 | | static uint32_t libcaes_forward_table0[ 256 ]; |
237 | | static uint32_t libcaes_forward_table1[ 256 ]; |
238 | | static uint32_t libcaes_forward_table2[ 256 ]; |
239 | | static uint32_t libcaes_forward_table3[ 256 ]; |
240 | | |
241 | | /* Reverse S-box & tables |
242 | | */ |
243 | | static uint8_t libcaes_reverse_substitution_box[ 256 ]; |
244 | | |
245 | | static uint32_t libcaes_reverse_table0[ 256 ]; |
246 | | static uint32_t libcaes_reverse_table1[ 256 ]; |
247 | | static uint32_t libcaes_reverse_table2[ 256 ]; |
248 | | static uint32_t libcaes_reverse_table3[ 256 ]; |
249 | | |
250 | | /* Round constants |
251 | | */ |
252 | | static uint32_t libcaes_round_constants[ 10 ]; |
253 | | |
254 | | static int libcaes_tables_initialized = 0; |
255 | | |
256 | | #endif /* !defined( LIBCAES_HAVE_AES_SUPPORT ) */ |
257 | | |
258 | | /* Creates a context |
259 | | * Make sure the value context is referencing, is set to NULL |
260 | | * Returns 1 if successful or -1 on error |
261 | | */ |
262 | | int libcaes_context_initialize( |
263 | | libcaes_context_t **context, |
264 | | libcerror_error_t **error ) |
265 | 6.45k | { |
266 | 6.45k | libcaes_internal_context_t *internal_context = NULL; |
267 | 6.45k | static char *function = "libcaes_context_initialize"; |
268 | | |
269 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && ( defined( HAVE_EVP_CRYPTO_AES_CBC ) || defined( HAVE_EVP_CRYPTO_AES_ECB ) ) |
270 | | char error_string[ 256 ]; |
271 | | |
272 | | unsigned long error_code = 0; |
273 | | #endif |
274 | | |
275 | 6.45k | if( context == NULL ) |
276 | 0 | { |
277 | 0 | libcerror_error_set( |
278 | 0 | error, |
279 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
280 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
281 | 0 | "%s: invalid context.", |
282 | 0 | function ); |
283 | |
|
284 | 0 | return( -1 ); |
285 | 0 | } |
286 | 6.45k | if( *context != NULL ) |
287 | 0 | { |
288 | 0 | libcerror_error_set( |
289 | 0 | error, |
290 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
291 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
292 | 0 | "%s: invalid context value already set.", |
293 | 0 | function ); |
294 | |
|
295 | 0 | return( -1 ); |
296 | 0 | } |
297 | 6.45k | internal_context = memory_allocate_structure( |
298 | 6.45k | libcaes_internal_context_t ); |
299 | | |
300 | 6.45k | if( internal_context == NULL ) |
301 | 0 | { |
302 | 0 | libcerror_error_set( |
303 | 0 | error, |
304 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
305 | 0 | LIBCERROR_MEMORY_ERROR_INSUFFICIENT, |
306 | 0 | "%s: unable to create context.", |
307 | 0 | function ); |
308 | |
|
309 | 0 | goto on_error; |
310 | 0 | } |
311 | 6.45k | if( memory_set( |
312 | 6.45k | internal_context, |
313 | 6.45k | 0, |
314 | 6.45k | sizeof( libcaes_internal_context_t ) ) == NULL ) |
315 | 0 | { |
316 | 0 | libcerror_error_set( |
317 | 0 | error, |
318 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
319 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
320 | 0 | "%s: unable to clear context.", |
321 | 0 | function ); |
322 | |
|
323 | 0 | goto on_error; |
324 | 0 | } |
325 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) |
326 | | /* No additional initialization necessary */ |
327 | | |
328 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && ( defined( HAVE_EVP_CRYPTO_AES_CBC ) || defined( HAVE_EVP_CRYPTO_AES_ECB ) ) |
329 | | #if defined( HAVE_EVP_CIPHER_CTX_INIT ) |
330 | | EVP_CIPHER_CTX_init( |
331 | | &( internal_context->internal_evp_cipher_context ) ); |
332 | | |
333 | | internal_context->evp_cipher_context = &( internal_context->internal_evp_cipher_context ); |
334 | | #else |
335 | | internal_context->evp_cipher_context = EVP_CIPHER_CTX_new(); |
336 | | |
337 | | if( internal_context->evp_cipher_context == NULL ) |
338 | | { |
339 | | error_code = ERR_get_error(); |
340 | | |
341 | | ERR_error_string_n( |
342 | | error_code, |
343 | | error_string, |
344 | | 256 ); |
345 | | |
346 | | libcerror_error_set( |
347 | | error, |
348 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
349 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
350 | | "%s: unable to create EVP cipher context with error: %s.", |
351 | | function, |
352 | | error_string ); |
353 | | |
354 | | goto on_error; |
355 | | } |
356 | | #endif /* defined( HAVE_EVP_CIPHER_CTX_INIT ) */ |
357 | | #else |
358 | 6.45k | if( libcaes_tables_initialized == 0 ) |
359 | 9 | { |
360 | 9 | if( libcaes_initialize_tables( |
361 | 9 | error ) != 1 ) |
362 | 0 | { |
363 | 0 | libcerror_error_set( |
364 | 0 | error, |
365 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
366 | 0 | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
367 | 0 | "%s: unable to initialize tables.", |
368 | 0 | function ); |
369 | |
|
370 | 0 | goto on_error; |
371 | 0 | } |
372 | 9 | libcaes_tables_initialized = 1; |
373 | 9 | } |
374 | 6.45k | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) */ |
375 | | |
376 | 6.45k | *context = (libcaes_context_t *) internal_context; |
377 | | |
378 | 6.45k | return( 1 ); |
379 | | |
380 | 0 | on_error: |
381 | 0 | if( internal_context != NULL ) |
382 | 0 | { |
383 | 0 | memory_free( |
384 | 0 | internal_context ); |
385 | 0 | } |
386 | 0 | return( -1 ); |
387 | 6.45k | } |
388 | | |
389 | | /* Frees a context |
390 | | * Returns 1 if successful or -1 on error |
391 | | */ |
392 | | int libcaes_context_free( |
393 | | libcaes_context_t **context, |
394 | | libcerror_error_t **error ) |
395 | 6.45k | { |
396 | 6.45k | libcaes_internal_context_t *internal_context = NULL; |
397 | 6.45k | static char *function = "libcaes_context_free"; |
398 | 6.45k | int result = 1; |
399 | | |
400 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_EVP_CIPHER_CTX_CLEANUP ) |
401 | | char error_string[ 256 ]; |
402 | | |
403 | | unsigned long error_code = 0; |
404 | | #endif |
405 | | |
406 | 6.45k | if( context == NULL ) |
407 | 0 | { |
408 | 0 | libcerror_error_set( |
409 | 0 | error, |
410 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
411 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
412 | 0 | "%s: invalid context.", |
413 | 0 | function ); |
414 | |
|
415 | 0 | return( -1 ); |
416 | 0 | } |
417 | 6.45k | if( *context != NULL ) |
418 | 6.45k | { |
419 | 6.45k | internal_context = (libcaes_internal_context_t *) *context; |
420 | 6.45k | *context = NULL; |
421 | | |
422 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) |
423 | | /* No additional clean up necessary */ |
424 | | |
425 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && ( defined( HAVE_EVP_CRYPTO_AES_CBC ) || defined( HAVE_EVP_CRYPTO_AES_ECB ) ) |
426 | | #if defined( HAVE_EVP_CIPHER_CTX_CLEANUP ) |
427 | | if( EVP_CIPHER_CTX_cleanup( |
428 | | &( internal_context->internal_evp_cipher_context ) ) != 1 ) |
429 | | { |
430 | | error_code = ERR_get_error(); |
431 | | |
432 | | ERR_error_string_n( |
433 | | error_code, |
434 | | error_string, |
435 | | 256 ); |
436 | | |
437 | | libcerror_error_set( |
438 | | error, |
439 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
440 | | LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED, |
441 | | "%s: unable to clean up EVP cipher context with error: %s.", |
442 | | function, |
443 | | error_string ); |
444 | | |
445 | | result = -1; |
446 | | } |
447 | | /* Make sure the error state is removed otherwise OpenSSL will leak memory |
448 | | */ |
449 | | ERR_remove_thread_state( |
450 | | NULL ); |
451 | | #else |
452 | | EVP_CIPHER_CTX_free( |
453 | | internal_context->evp_cipher_context ); |
454 | | |
455 | | #endif /* defined( HAVE_EVP_CIPHER_CTX_CLEANUP ) */ |
456 | | |
457 | | internal_context->evp_cipher_context = NULL; |
458 | | #else |
459 | | /* No additional clean up necessary */ |
460 | | |
461 | 6.45k | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) */ |
462 | | |
463 | 6.45k | memory_free( |
464 | 6.45k | internal_context ); |
465 | 6.45k | } |
466 | 6.45k | return( result ); |
467 | 6.45k | } |
468 | | |
469 | | /* Sets the key |
470 | | * Returns 1 if successful or -1 on error |
471 | | */ |
472 | | int libcaes_context_set_key( |
473 | | libcaes_context_t *context, |
474 | | int mode, |
475 | | const uint8_t *key, |
476 | | size_t key_bit_size, |
477 | | libcerror_error_t **error ) |
478 | 4.92k | { |
479 | 4.92k | libcaes_internal_context_t *internal_context = NULL; |
480 | 4.92k | static char *function = "libcaes_context_set_key"; |
481 | | |
482 | 4.92k | if( context == NULL ) |
483 | 0 | { |
484 | 0 | libcerror_error_set( |
485 | 0 | error, |
486 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
487 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
488 | 0 | "%s: invalid context.", |
489 | 0 | function ); |
490 | |
|
491 | 0 | return( -1 ); |
492 | 0 | } |
493 | 4.92k | internal_context = (libcaes_internal_context_t *) context; |
494 | | |
495 | 4.92k | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
496 | 3.39k | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
497 | 0 | { |
498 | 0 | libcerror_error_set( |
499 | 0 | error, |
500 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
501 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
502 | 0 | "%s: unsupported mode.", |
503 | 0 | function ); |
504 | |
|
505 | 0 | return( -1 ); |
506 | 0 | } |
507 | 4.92k | if( ( key_bit_size != 128 ) |
508 | 1.88k | && ( key_bit_size != 192 ) |
509 | 1.88k | && ( key_bit_size != 256 ) ) |
510 | 1 | { |
511 | 1 | libcerror_error_set( |
512 | 1 | error, |
513 | 1 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
514 | 1 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
515 | 1 | "%s: unsupported key bit size.", |
516 | 1 | function ); |
517 | | |
518 | 1 | return( -1 ); |
519 | 1 | } |
520 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) |
521 | | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
522 | | { |
523 | | if( AES_set_encrypt_key( |
524 | | (unsigned char *) key, |
525 | | (int) key_bit_size, |
526 | | &( internal_context->key ) ) != 0 ) |
527 | | { |
528 | | libcerror_error_set( |
529 | | error, |
530 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
531 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
532 | | "%s: unable to set encryption key.", |
533 | | function ); |
534 | | |
535 | | return( -1 ); |
536 | | } |
537 | | } |
538 | | else |
539 | | { |
540 | | if( AES_set_decrypt_key( |
541 | | (unsigned char *) key, |
542 | | (int) key_bit_size, |
543 | | &( internal_context->key ) ) != 0 ) |
544 | | { |
545 | | libcerror_error_set( |
546 | | error, |
547 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
548 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
549 | | "%s: unable to set decryption key.", |
550 | | function ); |
551 | | |
552 | | return( -1 ); |
553 | | } |
554 | | } |
555 | | |
556 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && ( defined( HAVE_EVP_CRYPTO_AES_CBC ) || defined( HAVE_EVP_CRYPTO_AES_ECB ) ) |
557 | | if( key == NULL ) |
558 | | { |
559 | | libcerror_error_set( |
560 | | error, |
561 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
562 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
563 | | "%s: invalid key.", |
564 | | function ); |
565 | | |
566 | | return( -1 ); |
567 | | } |
568 | | if( memory_copy( |
569 | | internal_context->key, |
570 | | key, |
571 | | key_bit_size / 8 ) == NULL ) |
572 | | { |
573 | | libcerror_error_set( |
574 | | error, |
575 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
576 | | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
577 | | "%s: unable to copy key.", |
578 | | function ); |
579 | | |
580 | | return( -1 ); |
581 | | } |
582 | | internal_context->key_bit_size = key_bit_size; |
583 | | |
584 | | #else |
585 | 4.92k | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
586 | 3.39k | { |
587 | 3.39k | if( libcaes_internal_context_set_encryption_key( |
588 | 3.39k | internal_context, |
589 | 3.39k | key, |
590 | 3.39k | key_bit_size, |
591 | 3.39k | error ) != 1 ) |
592 | 0 | { |
593 | 0 | libcerror_error_set( |
594 | 0 | error, |
595 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
596 | 0 | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
597 | 0 | "%s: unable to set encryption key.", |
598 | 0 | function ); |
599 | |
|
600 | 0 | return( -1 ); |
601 | 0 | } |
602 | 3.39k | } |
603 | 1.52k | else |
604 | 1.52k | { |
605 | 1.52k | if( libcaes_internal_context_set_decryption_key( |
606 | 1.52k | internal_context, |
607 | 1.52k | key, |
608 | 1.52k | key_bit_size, |
609 | 1.52k | error ) != 1 ) |
610 | 0 | { |
611 | 0 | libcerror_error_set( |
612 | 0 | error, |
613 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
614 | 0 | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
615 | 0 | "%s: unable to set decryption key.", |
616 | 0 | function ); |
617 | |
|
618 | 0 | return( -1 ); |
619 | 0 | } |
620 | 1.52k | } |
621 | 4.92k | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) */ |
622 | | |
623 | 4.92k | return( 1 ); |
624 | 4.92k | } |
625 | | |
626 | | #if !defined( LIBCAES_HAVE_AES_SUPPORT ) |
627 | | |
628 | | /* Initializes the AES encryption and decryption tables |
629 | | * Returns 1 if successful or -1 on error |
630 | | */ |
631 | | int libcaes_initialize_tables( |
632 | | libcerror_error_t **error ) |
633 | 9 | { |
634 | 9 | uint8_t logs_table[ 256 ]; |
635 | 9 | uint8_t powers_table[ 256 ]; |
636 | | |
637 | 9 | static char *function = "libcaes_initialize_tables"; |
638 | 9 | uint16_t byte_index = 0; |
639 | 9 | uint16_t table_index = 0; |
640 | 9 | uint8_t byte_value = 0; |
641 | 9 | uint8_t log_value = 0; |
642 | 9 | uint8_t round_constant_index = 0; |
643 | 9 | uint8_t substitution_value = 0; |
644 | | |
645 | 9 | if( memory_set( |
646 | 9 | logs_table, |
647 | 9 | 0, |
648 | 9 | sizeof( uint8_t ) * 256 ) == NULL ) |
649 | 0 | { |
650 | 0 | libcerror_error_set( |
651 | 0 | error, |
652 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
653 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
654 | 0 | "%s: unable to clear logs table.", |
655 | 0 | function ); |
656 | |
|
657 | 0 | return( -1 ); |
658 | 0 | } |
659 | | /* Fill the powers and logs tables over GF( 2^8 ) |
660 | | */ |
661 | 9 | byte_value = 1; |
662 | | |
663 | 9 | for( byte_index = 0; |
664 | 2.31k | byte_index < 256; |
665 | 2.30k | byte_index++ ) |
666 | 2.30k | { |
667 | 2.30k | powers_table[ byte_index ] = byte_value; |
668 | 2.30k | logs_table[ byte_value ] = (uint8_t) byte_index; |
669 | | |
670 | 2.30k | if( ( byte_value & 0x80 ) == 0 ) |
671 | 1.15k | { |
672 | 1.15k | byte_value ^= ( byte_value << 1 ) & 0xff; |
673 | 1.15k | } |
674 | 1.15k | else |
675 | 1.15k | { |
676 | 1.15k | byte_value ^= ( ( byte_value << 1 ) & 0xff ) ^ 0x1b; |
677 | 1.15k | } |
678 | 2.30k | } |
679 | | /* Fill the round constants |
680 | | */ |
681 | 9 | byte_value = 1; |
682 | | |
683 | 9 | for( round_constant_index = 0; |
684 | 99 | round_constant_index < 10; |
685 | 90 | round_constant_index++ ) |
686 | 90 | { |
687 | 90 | libcaes_round_constants[ round_constant_index ] = (uint32_t) byte_value; |
688 | | |
689 | 90 | if( ( byte_value & 0x80 ) == 0 ) |
690 | 81 | { |
691 | 81 | byte_value = ( byte_value << 1 ) & 0xff; |
692 | 81 | } |
693 | 9 | else |
694 | 9 | { |
695 | 9 | byte_value = ( ( byte_value << 1 ) & 0xff ) ^ 0x1b; |
696 | 9 | } |
697 | 90 | } |
698 | | |
699 | | /* Fill the forward and reverse S-boxes |
700 | | */ |
701 | 9 | libcaes_forward_substitution_box[ 0x00 ] = 0x63; |
702 | 9 | libcaes_reverse_substitution_box[ 0x63 ] = 0x00; |
703 | | |
704 | 9 | for( byte_index = 1; |
705 | 2.30k | byte_index < 256; |
706 | 2.29k | byte_index++ ) |
707 | 2.29k | { |
708 | 2.29k | table_index = 255 - logs_table[ byte_index ]; |
709 | 2.29k | byte_value = powers_table[ table_index ]; |
710 | | |
711 | 2.29k | substitution_value = ( ( byte_value << 1 ) & 0xff ) |
712 | 2.29k | | ( byte_value >> 7 ); |
713 | | |
714 | 2.29k | byte_value ^= substitution_value; |
715 | | |
716 | 2.29k | substitution_value = ( ( substitution_value << 1 ) & 0xff ) |
717 | 2.29k | | ( substitution_value >> 7 ); |
718 | | |
719 | 2.29k | byte_value ^= substitution_value; |
720 | | |
721 | 2.29k | substitution_value = ( ( substitution_value << 1 ) & 0xff ) |
722 | 2.29k | | ( substitution_value >> 7 ); |
723 | | |
724 | 2.29k | byte_value ^= substitution_value; |
725 | | |
726 | 2.29k | substitution_value = ( ( substitution_value << 1 ) & 0xff ) |
727 | 2.29k | | ( substitution_value >> 7 ); |
728 | | |
729 | 2.29k | substitution_value ^= byte_value ^ 0x63; |
730 | | |
731 | 2.29k | libcaes_forward_substitution_box[ byte_index ] = substitution_value; |
732 | 2.29k | libcaes_reverse_substitution_box[ substitution_value ] = (uint8_t) byte_index; |
733 | 2.29k | } |
734 | | /* Fill the forward and reverse tables |
735 | | */ |
736 | 9 | for( byte_index = 0; |
737 | 2.31k | byte_index < 256; |
738 | 2.30k | byte_index++ ) |
739 | 2.30k | { |
740 | 2.30k | byte_value = libcaes_forward_substitution_box[ byte_index ]; |
741 | | |
742 | 2.30k | if( ( byte_value & 0x80 ) == 0 ) |
743 | 1.15k | { |
744 | 1.15k | substitution_value = ( byte_value << 1 ) & 0xff; |
745 | 1.15k | } |
746 | 1.15k | else |
747 | 1.15k | { |
748 | 1.15k | substitution_value = ( ( byte_value << 1 ) & 0xff ) ^ 0x1b; |
749 | 1.15k | } |
750 | 2.30k | libcaes_forward_table0[ byte_index ] = byte_value ^ substitution_value; |
751 | 2.30k | libcaes_forward_table0[ byte_index ] <<= 8; |
752 | 2.30k | libcaes_forward_table0[ byte_index ] |= byte_value; |
753 | 2.30k | libcaes_forward_table0[ byte_index ] <<= 8; |
754 | 2.30k | libcaes_forward_table0[ byte_index ] |= byte_value; |
755 | 2.30k | libcaes_forward_table0[ byte_index ] <<= 8; |
756 | 2.30k | libcaes_forward_table0[ byte_index ] |= substitution_value; |
757 | | |
758 | 2.30k | libcaes_forward_table1[ byte_index ] = byte_stream_bit_rotate_left( |
759 | 2.30k | libcaes_forward_table0[ byte_index ], |
760 | 2.30k | 8 ); |
761 | | |
762 | 2.30k | libcaes_forward_table2[ byte_index ] = byte_stream_bit_rotate_left( |
763 | 2.30k | libcaes_forward_table1[ byte_index ], |
764 | 2.30k | 8 ); |
765 | | |
766 | 2.30k | libcaes_forward_table3[ byte_index ] = byte_stream_bit_rotate_left( |
767 | 2.30k | libcaes_forward_table2[ byte_index ], |
768 | 2.30k | 8 ); |
769 | | |
770 | 2.30k | substitution_value = libcaes_reverse_substitution_box[ byte_index ]; |
771 | | |
772 | 2.30k | libcaes_reverse_table0[ byte_index ] = 0; |
773 | | |
774 | 2.30k | if( substitution_value != 0 ) |
775 | 2.29k | { |
776 | 2.29k | log_value = logs_table[ substitution_value ]; |
777 | | |
778 | 2.29k | table_index = (logs_table[ 0x0b ] + log_value) % 255; |
779 | | |
780 | 2.29k | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
781 | 2.29k | libcaes_reverse_table0[ byte_index ] <<= 8; |
782 | | |
783 | 2.29k | table_index = ( logs_table[ 0x0d ] + log_value ) % 255; |
784 | | |
785 | 2.29k | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
786 | 2.29k | libcaes_reverse_table0[ byte_index ] <<= 8; |
787 | | |
788 | 2.29k | table_index = ( logs_table[ 0x09 ] + log_value ) % 255; |
789 | | |
790 | 2.29k | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
791 | 2.29k | libcaes_reverse_table0[ byte_index ] <<= 8; |
792 | | |
793 | 2.29k | table_index = ( logs_table[ 0x0e ] + log_value ) % 255; |
794 | | |
795 | 2.29k | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
796 | 2.29k | } |
797 | 2.30k | libcaes_reverse_table1[ byte_index ] = byte_stream_bit_rotate_left( |
798 | 2.30k | libcaes_reverse_table0[ byte_index ], |
799 | 2.30k | 8 ); |
800 | | |
801 | 2.30k | libcaes_reverse_table2[ byte_index ] = byte_stream_bit_rotate_left( |
802 | 2.30k | libcaes_reverse_table1[ byte_index ], |
803 | 2.30k | 8 ); |
804 | | |
805 | 2.30k | libcaes_reverse_table3[ byte_index ] = byte_stream_bit_rotate_left( |
806 | 2.30k | libcaes_reverse_table2[ byte_index ], |
807 | 2.30k | 8 ); |
808 | 2.30k | } |
809 | 9 | return( 1 ); |
810 | 9 | } |
811 | | |
812 | | /* Sets the AES decryption key |
813 | | * Returns 1 if successful or -1 on error |
814 | | */ |
815 | | int libcaes_internal_context_set_decryption_key( |
816 | | libcaes_internal_context_t *internal_context, |
817 | | const uint8_t *key, |
818 | | size_t key_bit_size, |
819 | | libcerror_error_t **error ) |
820 | 1.52k | { |
821 | 1.52k | libcaes_internal_context_t *encryption_context = NULL; |
822 | 1.52k | static char *function = "libcaes_internal_context_set_decryption_key"; |
823 | 1.52k | uint32_t *encryption_round_keys = NULL; |
824 | 1.52k | uint32_t *round_keys = NULL; |
825 | 1.52k | size_t round_keys_byte_offset = 0; |
826 | 1.52k | uint8_t byte_value0 = 0; |
827 | 1.52k | uint8_t byte_value1 = 0; |
828 | 1.52k | uint8_t byte_value2 = 0; |
829 | 1.52k | uint8_t byte_value3 = 0; |
830 | 1.52k | int round_key_iterator = 0; |
831 | | |
832 | 1.52k | if( internal_context == NULL ) |
833 | 0 | { |
834 | 0 | libcerror_error_set( |
835 | 0 | error, |
836 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
837 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
838 | 0 | "%s: invalid context.", |
839 | 0 | function ); |
840 | |
|
841 | 0 | return( -1 ); |
842 | 0 | } |
843 | 1.52k | if( key == NULL ) |
844 | 0 | { |
845 | 0 | libcerror_error_set( |
846 | 0 | error, |
847 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
848 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
849 | 0 | "%s: invalid key.", |
850 | 0 | function ); |
851 | |
|
852 | 0 | return( -1 ); |
853 | 0 | } |
854 | 1.52k | if( ( key_bit_size != 128 ) |
855 | 207 | && ( key_bit_size != 192 ) |
856 | 207 | && ( key_bit_size != 256 ) ) |
857 | 0 | { |
858 | 0 | libcerror_error_set( |
859 | 0 | error, |
860 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
861 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
862 | 0 | "%s: unsupported key bit size.", |
863 | 0 | function ); |
864 | |
|
865 | 0 | return( -1 ); |
866 | 0 | } |
867 | 1.52k | if( key_bit_size == 128 ) |
868 | 1.31k | { |
869 | 1.31k | internal_context->number_of_round_keys = 10; |
870 | 1.31k | } |
871 | 207 | else if( key_bit_size == 192 ) |
872 | 0 | { |
873 | 0 | internal_context->number_of_round_keys = 12; |
874 | 0 | } |
875 | 207 | else if( key_bit_size == 256 ) |
876 | 207 | { |
877 | 207 | internal_context->number_of_round_keys = 14; |
878 | 207 | } |
879 | | /* Align the buffer to next 16-byte blocks |
880 | | */ |
881 | 1.52k | internal_context->round_keys = (uint32_t *) ( 16 + ( (intptr_t) internal_context->round_keys_data & ~( 15 ) ) ); |
882 | | |
883 | 1.52k | round_keys = internal_context->round_keys; |
884 | | |
885 | 1.52k | if( libcaes_context_initialize( |
886 | 1.52k | (libcaes_context_t **) &encryption_context, |
887 | 1.52k | error ) != 1 ) |
888 | 0 | { |
889 | 0 | libcerror_error_set( |
890 | 0 | error, |
891 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
892 | 0 | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
893 | 0 | "%s: unable to create encryption context.", |
894 | 0 | function ); |
895 | |
|
896 | 0 | goto on_error; |
897 | 0 | } |
898 | 1.52k | if( libcaes_internal_context_set_encryption_key( |
899 | 1.52k | encryption_context, |
900 | 1.52k | key, |
901 | 1.52k | key_bit_size, |
902 | 1.52k | error ) != 1 ) |
903 | 0 | { |
904 | 0 | libcerror_error_set( |
905 | 0 | error, |
906 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
907 | 0 | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
908 | 0 | "%s: unable to set encryption key.", |
909 | 0 | function ); |
910 | |
|
911 | 0 | goto on_error; |
912 | 0 | } |
913 | | /* Point to the end of the round keys |
914 | | */ |
915 | 1.52k | round_keys_byte_offset = encryption_context->number_of_round_keys * sizeof( uint32_t ); |
916 | | |
917 | 1.52k | encryption_round_keys = &( encryption_context->round_keys[ round_keys_byte_offset ] ); |
918 | | |
919 | 1.52k | round_keys[ 0 ] = encryption_round_keys[ 0 ]; |
920 | 1.52k | round_keys[ 1 ] = encryption_round_keys[ 1 ]; |
921 | 1.52k | round_keys[ 2 ] = encryption_round_keys[ 2 ]; |
922 | 1.52k | round_keys[ 3 ] = encryption_round_keys[ 3 ]; |
923 | | |
924 | 1.52k | round_keys += 4; |
925 | 1.52k | encryption_round_keys -= 4; |
926 | | |
927 | 1.52k | for( round_key_iterator = internal_context->number_of_round_keys; |
928 | 16.0k | round_key_iterator > 1; |
929 | 14.5k | round_key_iterator-- ) |
930 | 14.5k | { |
931 | 14.5k | byte_value0 = ( encryption_round_keys[ 0 ] & 0xff ); |
932 | 14.5k | byte_value1 = ( ( encryption_round_keys[ 0 ] >> 8 ) & 0xff ); |
933 | 14.5k | byte_value2 = ( ( encryption_round_keys[ 0 ] >> 16 ) & 0xff ); |
934 | 14.5k | byte_value3 = ( ( encryption_round_keys[ 0 ] >> 24 ) & 0xff ); |
935 | | |
936 | 14.5k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
937 | 14.5k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
938 | 14.5k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
939 | 14.5k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
940 | | |
941 | 14.5k | round_keys[ 0 ] = libcaes_reverse_table0[ byte_value0 ] |
942 | 14.5k | ^ libcaes_reverse_table1[ byte_value1 ] |
943 | 14.5k | ^ libcaes_reverse_table2[ byte_value2 ] |
944 | 14.5k | ^ libcaes_reverse_table3[ byte_value3 ]; |
945 | | |
946 | 14.5k | byte_value0 = ( encryption_round_keys[ 1 ] & 0xff ); |
947 | 14.5k | byte_value1 = ( ( encryption_round_keys[ 1 ] >> 8 ) & 0xff ); |
948 | 14.5k | byte_value2 = ( ( encryption_round_keys[ 1 ] >> 16 ) & 0xff ); |
949 | 14.5k | byte_value3 = ( ( encryption_round_keys[ 1 ] >> 24 ) & 0xff ); |
950 | | |
951 | 14.5k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
952 | 14.5k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
953 | 14.5k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
954 | 14.5k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
955 | | |
956 | 14.5k | round_keys[ 1 ] = libcaes_reverse_table0[ byte_value0 ] |
957 | 14.5k | ^ libcaes_reverse_table1[ byte_value1 ] |
958 | 14.5k | ^ libcaes_reverse_table2[ byte_value2 ] |
959 | 14.5k | ^ libcaes_reverse_table3[ byte_value3 ]; |
960 | | |
961 | 14.5k | byte_value0 = ( encryption_round_keys[ 2 ] & 0xff ); |
962 | 14.5k | byte_value1 = ( ( encryption_round_keys[ 2 ] >> 8 ) & 0xff ); |
963 | 14.5k | byte_value2 = ( ( encryption_round_keys[ 2 ] >> 16 ) & 0xff ); |
964 | 14.5k | byte_value3 = ( ( encryption_round_keys[ 2 ] >> 24 ) & 0xff ); |
965 | | |
966 | 14.5k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
967 | 14.5k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
968 | 14.5k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
969 | 14.5k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
970 | | |
971 | 14.5k | round_keys[ 2 ] = libcaes_reverse_table0[ byte_value0 ] |
972 | 14.5k | ^ libcaes_reverse_table1[ byte_value1 ] |
973 | 14.5k | ^ libcaes_reverse_table2[ byte_value2 ] |
974 | 14.5k | ^ libcaes_reverse_table3[ byte_value3 ]; |
975 | | |
976 | 14.5k | byte_value0 = ( encryption_round_keys[ 3 ] & 0xff ); |
977 | 14.5k | byte_value1 = ( ( encryption_round_keys[ 3 ] >> 8 ) & 0xff ); |
978 | 14.5k | byte_value2 = ( ( encryption_round_keys[ 3 ] >> 16 ) & 0xff ); |
979 | 14.5k | byte_value3 = ( ( encryption_round_keys[ 3 ] >> 24 ) & 0xff ); |
980 | | |
981 | 14.5k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
982 | 14.5k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
983 | 14.5k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
984 | 14.5k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
985 | | |
986 | 14.5k | round_keys[ 3 ] = libcaes_reverse_table0[ byte_value0 ] |
987 | 14.5k | ^ libcaes_reverse_table1[ byte_value1 ] |
988 | 14.5k | ^ libcaes_reverse_table2[ byte_value2 ] |
989 | 14.5k | ^ libcaes_reverse_table3[ byte_value3 ]; |
990 | | |
991 | 14.5k | round_keys += 4; |
992 | 14.5k | encryption_round_keys -= 4; |
993 | 14.5k | } |
994 | 1.52k | round_keys[ 0 ] = encryption_round_keys[ 0 ]; |
995 | 1.52k | round_keys[ 1 ] = encryption_round_keys[ 1 ]; |
996 | 1.52k | round_keys[ 2 ] = encryption_round_keys[ 2 ]; |
997 | 1.52k | round_keys[ 3 ] = encryption_round_keys[ 3 ]; |
998 | | |
999 | 1.52k | if( libcaes_context_free( |
1000 | 1.52k | (libcaes_context_t **) &encryption_context, |
1001 | 1.52k | error ) != 1 ) |
1002 | 0 | { |
1003 | 0 | libcerror_error_set( |
1004 | 0 | error, |
1005 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1006 | 0 | LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED, |
1007 | 0 | "%s: unable to free encryption context.", |
1008 | 0 | function ); |
1009 | |
|
1010 | 0 | goto on_error; |
1011 | 0 | } |
1012 | 1.52k | return( 1 ); |
1013 | | |
1014 | 0 | on_error: |
1015 | 0 | if( encryption_context != NULL ) |
1016 | 0 | { |
1017 | 0 | libcaes_context_free( |
1018 | 0 | (libcaes_context_t **) &encryption_context, |
1019 | 0 | NULL ); |
1020 | 0 | } |
1021 | 0 | return( -1 ); |
1022 | 1.52k | } |
1023 | | |
1024 | | /* Sets the AES encryption key |
1025 | | * Returns 1 if successful or -1 on error |
1026 | | */ |
1027 | | int libcaes_internal_context_set_encryption_key( |
1028 | | libcaes_internal_context_t *internal_context, |
1029 | | const uint8_t *key, |
1030 | | size_t key_bit_size, |
1031 | | libcerror_error_t **error ) |
1032 | 4.92k | { |
1033 | 4.92k | static char *function = "libcaes_internal_context_set_encryption_key"; |
1034 | 4.92k | uint32_t *round_keys = NULL; |
1035 | 4.92k | size_t key_index = 0; |
1036 | 4.92k | int round_constant_index = 0; |
1037 | | |
1038 | 4.92k | if( internal_context == NULL ) |
1039 | 0 | { |
1040 | 0 | libcerror_error_set( |
1041 | 0 | error, |
1042 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1043 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1044 | 0 | "%s: invalid context.", |
1045 | 0 | function ); |
1046 | |
|
1047 | 0 | return( -1 ); |
1048 | 0 | } |
1049 | 4.92k | if( key == NULL ) |
1050 | 0 | { |
1051 | 0 | libcerror_error_set( |
1052 | 0 | error, |
1053 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1054 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1055 | 0 | "%s: invalid key.", |
1056 | 0 | function ); |
1057 | |
|
1058 | 0 | return( -1 ); |
1059 | 0 | } |
1060 | 4.92k | if( ( key_bit_size != 128 ) |
1061 | 1.88k | && ( key_bit_size != 192 ) |
1062 | 1.88k | && ( key_bit_size != 256 ) ) |
1063 | 0 | { |
1064 | 0 | libcerror_error_set( |
1065 | 0 | error, |
1066 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1067 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1068 | 0 | "%s: unsupported key bit size.", |
1069 | 0 | function ); |
1070 | |
|
1071 | 0 | return( -1 ); |
1072 | 0 | } |
1073 | | /* Align the buffer to next 16-byte blocks |
1074 | | */ |
1075 | 4.92k | internal_context->round_keys = (uint32_t *) ( 16 + ( (intptr_t) internal_context->round_keys_data & ~( 15 ) ) ); |
1076 | | |
1077 | 4.92k | round_keys = internal_context->round_keys; |
1078 | | |
1079 | 4.92k | for( key_index = 0; |
1080 | 32.1k | key_index < key_bit_size / 8; |
1081 | 27.2k | key_index += 4 ) |
1082 | 27.2k | { |
1083 | 27.2k | byte_stream_copy_to_uint32_little_endian( |
1084 | 27.2k | &( key[ key_index ] ), |
1085 | 27.2k | round_keys[ round_constant_index ] ); |
1086 | | |
1087 | 27.2k | round_constant_index++; |
1088 | 27.2k | } |
1089 | 4.92k | if( key_bit_size == 128 ) |
1090 | 3.04k | { |
1091 | 3.04k | internal_context->number_of_round_keys = 10; |
1092 | | |
1093 | 3.04k | for( round_constant_index = 0; |
1094 | 33.4k | round_constant_index < 10; |
1095 | 30.4k | round_constant_index++ ) |
1096 | 30.4k | { |
1097 | 30.4k | round_keys[ 4 ] = libcaes_round_constants[ round_constant_index ]; |
1098 | 30.4k | round_keys[ 4 ] ^= round_keys[ 0 ]; |
1099 | 30.4k | round_keys[ 4 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] >> 8 ) & 0xff ]; |
1100 | 30.4k | round_keys[ 4 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] >> 16 ) & 0xff ] ) << 8; |
1101 | 30.4k | round_keys[ 4 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] >> 24 ) & 0xff ] ) << 16; |
1102 | 30.4k | round_keys[ 4 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] ) & 0xff ] ) << 24; |
1103 | | |
1104 | 30.4k | round_keys[ 5 ] = round_keys[ 1 ] ^ round_keys[ 4 ]; |
1105 | 30.4k | round_keys[ 6 ] = round_keys[ 2 ] ^ round_keys[ 5 ]; |
1106 | 30.4k | round_keys[ 7 ] = round_keys[ 3 ] ^ round_keys[ 6 ]; |
1107 | | |
1108 | 30.4k | round_keys += 4; |
1109 | 30.4k | } |
1110 | 3.04k | } |
1111 | 1.88k | else if( key_bit_size == 192 ) |
1112 | 0 | { |
1113 | 0 | internal_context->number_of_round_keys = 12; |
1114 | |
|
1115 | 0 | for( round_constant_index = 0; |
1116 | 0 | round_constant_index < 8; |
1117 | 0 | round_constant_index++ ) |
1118 | 0 | { |
1119 | 0 | round_keys[ 6 ] = libcaes_round_constants[ round_constant_index ]; |
1120 | 0 | round_keys[ 6 ] ^= round_keys[ 0 ]; |
1121 | 0 | round_keys[ 6 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] >> 8 ) & 0xff ]; |
1122 | 0 | round_keys[ 6 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] >> 16 ) & 0xff ] ) << 8; |
1123 | 0 | round_keys[ 6 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] >> 24 ) & 0xff ] ) << 16; |
1124 | 0 | round_keys[ 6 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] ) & 0xff ] ) << 24; |
1125 | |
|
1126 | 0 | round_keys[ 7 ] = round_keys[ 1 ] ^ round_keys[ 6 ]; |
1127 | 0 | round_keys[ 8 ] = round_keys[ 2 ] ^ round_keys[ 7 ]; |
1128 | 0 | round_keys[ 9 ] = round_keys[ 3 ] ^ round_keys[ 8 ]; |
1129 | 0 | round_keys[ 10 ] = round_keys[ 4 ] ^ round_keys[ 9 ]; |
1130 | 0 | round_keys[ 11 ] = round_keys[ 5 ] ^ round_keys[ 10 ]; |
1131 | |
|
1132 | 0 | round_keys += 6; |
1133 | 0 | } |
1134 | 0 | } |
1135 | 1.88k | else if( key_bit_size == 256 ) |
1136 | 1.88k | { |
1137 | 1.88k | internal_context->number_of_round_keys = 14; |
1138 | | |
1139 | 1.88k | for( round_constant_index = 0; |
1140 | 15.0k | round_constant_index < 7; |
1141 | 13.1k | round_constant_index++ ) |
1142 | 13.1k | { |
1143 | 13.1k | round_keys[ 8 ] = libcaes_round_constants[ round_constant_index ]; |
1144 | 13.1k | round_keys[ 8 ] ^= round_keys[ 0 ]; |
1145 | 13.1k | round_keys[ 8 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] >> 8 ) & 0xff ]; |
1146 | 13.1k | round_keys[ 8 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] >> 16 ) & 0xff ] ) << 8; |
1147 | 13.1k | round_keys[ 8 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] >> 24 ) & 0xff ] ) << 16; |
1148 | 13.1k | round_keys[ 8 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] ) & 0xff ] ) << 24; |
1149 | | |
1150 | 13.1k | round_keys[ 9 ] = round_keys[ 1 ] ^ round_keys[ 8 ]; |
1151 | 13.1k | round_keys[ 10 ] = round_keys[ 2 ] ^ round_keys[ 9 ]; |
1152 | 13.1k | round_keys[ 11 ] = round_keys[ 3 ] ^ round_keys[ 10 ]; |
1153 | | |
1154 | 13.1k | round_keys[ 12 ] = round_keys[ 4 ]; |
1155 | 13.1k | round_keys[ 12 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] ) & 0xff ]; |
1156 | 13.1k | round_keys[ 12 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] >> 8 ) & 0xff ] ) << 8; |
1157 | 13.1k | round_keys[ 12 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] >> 16 ) & 0xff ] ) << 16; |
1158 | 13.1k | round_keys[ 12 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] >> 24 ) & 0xff ] ) << 24; |
1159 | | |
1160 | 13.1k | round_keys[ 13 ] = round_keys[ 5 ] ^ round_keys[ 12 ]; |
1161 | 13.1k | round_keys[ 14 ] = round_keys[ 6 ] ^ round_keys[ 13 ]; |
1162 | 13.1k | round_keys[ 15 ] = round_keys[ 7 ] ^ round_keys[ 14 ]; |
1163 | | |
1164 | 13.1k | round_keys += 8; |
1165 | 13.1k | } |
1166 | 1.88k | } |
1167 | 4.92k | return( 1 ); |
1168 | 4.92k | } |
1169 | | |
1170 | | #endif /* !defined( LIBCAES_HAVE_AES_SUPPORT ) */ |
1171 | | |
1172 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_CBC_ENCRYPT ) |
1173 | | |
1174 | | /* De- or encrypts a block of data using AES-CBC (Cipher Block Chaining) using OpenSSL |
1175 | | * The size must be a multitude of the AES block size (16 byte) |
1176 | | * Returns 1 if successful or -1 on error |
1177 | | */ |
1178 | | int libcaes_crypt_cbc( |
1179 | | libcaes_context_t *context, |
1180 | | int mode, |
1181 | | const uint8_t *initialization_vector, |
1182 | | size_t initialization_vector_size, |
1183 | | const uint8_t *input_data, |
1184 | | size_t input_data_size, |
1185 | | uint8_t *output_data, |
1186 | | size_t output_data_size, |
1187 | | libcerror_error_t **error ) |
1188 | | { |
1189 | | uint8_t safe_initialization_vector[ 16 ]; |
1190 | | |
1191 | | libcaes_internal_context_t *internal_context = NULL; |
1192 | | static char *function = "libcaes_crypt_cbc"; |
1193 | | int safe_mode = 0; |
1194 | | |
1195 | | if( context == NULL ) |
1196 | | { |
1197 | | libcerror_error_set( |
1198 | | error, |
1199 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1200 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1201 | | "%s: invalid context.", |
1202 | | function ); |
1203 | | |
1204 | | return( -1 ); |
1205 | | } |
1206 | | internal_context = (libcaes_internal_context_t *) context; |
1207 | | |
1208 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
1209 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
1210 | | { |
1211 | | libcerror_error_set( |
1212 | | error, |
1213 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1214 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1215 | | "%s: unsupported mode.", |
1216 | | function ); |
1217 | | |
1218 | | return( -1 ); |
1219 | | } |
1220 | | if( initialization_vector == NULL ) |
1221 | | { |
1222 | | libcerror_error_set( |
1223 | | error, |
1224 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1225 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1226 | | "%s: invalid initialization vector.", |
1227 | | function ); |
1228 | | |
1229 | | return( -1 ); |
1230 | | } |
1231 | | if( initialization_vector_size != 16 ) |
1232 | | { |
1233 | | libcerror_error_set( |
1234 | | error, |
1235 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1236 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1237 | | "%s: invalid initialization vector size value out of bounds.", |
1238 | | function ); |
1239 | | |
1240 | | return( -1 ); |
1241 | | } |
1242 | | if( input_data == NULL ) |
1243 | | { |
1244 | | libcerror_error_set( |
1245 | | error, |
1246 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1247 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1248 | | "%s: invalid input data.", |
1249 | | function ); |
1250 | | |
1251 | | return( -1 ); |
1252 | | } |
1253 | | /* Check if the input data size is a multitude of 16-byte |
1254 | | */ |
1255 | | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
1256 | | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
1257 | | { |
1258 | | libcerror_error_set( |
1259 | | error, |
1260 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1261 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1262 | | "%s: invalid input data size value out of bounds.", |
1263 | | function ); |
1264 | | |
1265 | | return( -1 ); |
1266 | | } |
1267 | | if( output_data == NULL ) |
1268 | | { |
1269 | | libcerror_error_set( |
1270 | | error, |
1271 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1272 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1273 | | "%s: invalid output data.", |
1274 | | function ); |
1275 | | |
1276 | | return( -1 ); |
1277 | | } |
1278 | | if( ( output_data_size < input_data_size ) |
1279 | | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
1280 | | { |
1281 | | libcerror_error_set( |
1282 | | error, |
1283 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1284 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1285 | | "%s: invalid output data size value out of bounds.", |
1286 | | function ); |
1287 | | |
1288 | | return( -1 ); |
1289 | | } |
1290 | | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
1291 | | { |
1292 | | safe_mode = AES_ENCRYPT; |
1293 | | } |
1294 | | else |
1295 | | { |
1296 | | safe_mode = AES_DECRYPT; |
1297 | | } |
1298 | | /* AES_cbc_encrypt overwrites the data in the initialization vector |
1299 | | */ |
1300 | | if( memory_copy( |
1301 | | safe_initialization_vector, |
1302 | | initialization_vector, |
1303 | | 16 ) == NULL ) |
1304 | | { |
1305 | | libcerror_error_set( |
1306 | | error, |
1307 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1308 | | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1309 | | "%s: unable to copy initialization vector.", |
1310 | | function ); |
1311 | | |
1312 | | return( -1 ); |
1313 | | } |
1314 | | AES_cbc_encrypt( |
1315 | | (unsigned char *) input_data, |
1316 | | (unsigned char *) output_data, |
1317 | | input_data_size, |
1318 | | &( internal_context->key ), |
1319 | | (unsigned char *) safe_initialization_vector, |
1320 | | safe_mode ); |
1321 | | |
1322 | | if( memory_set( |
1323 | | safe_initialization_vector, |
1324 | | 0, |
1325 | | 16 ) == NULL ) |
1326 | | { |
1327 | | libcerror_error_set( |
1328 | | error, |
1329 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1330 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1331 | | "%s: unable to clear initialization vector.", |
1332 | | function ); |
1333 | | |
1334 | | return( -1 ); |
1335 | | } |
1336 | | return( 1 ); |
1337 | | } |
1338 | | |
1339 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && defined( HAVE_EVP_CRYPTO_AES_CBC ) |
1340 | | |
1341 | | /* De- or encrypts a block of data using AES-CBC (Cipher Block Chaining) using OpenSSL EVP |
1342 | | * The size must be a multitude of the AES block size (16 byte) |
1343 | | * Returns 1 if successful or -1 on error |
1344 | | */ |
1345 | | int libcaes_crypt_cbc( |
1346 | | libcaes_context_t *context, |
1347 | | int mode, |
1348 | | const uint8_t *initialization_vector, |
1349 | | size_t initialization_vector_size, |
1350 | | const uint8_t *input_data, |
1351 | | size_t input_data_size, |
1352 | | uint8_t *output_data, |
1353 | | size_t output_data_size, |
1354 | | libcerror_error_t **error ) |
1355 | | { |
1356 | | uint8_t block_data[ EVP_MAX_BLOCK_LENGTH ]; |
1357 | | char error_string[ 256 ]; |
1358 | | |
1359 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1360 | | OSSL_PARAM parameters[2]; |
1361 | | |
1362 | | EVP_CIPHER *cipher = NULL; |
1363 | | const char *cipher_string = NULL; |
1364 | | unsigned int padding = 0; |
1365 | | #else |
1366 | | const EVP_CIPHER *cipher = NULL; |
1367 | | #endif |
1368 | | |
1369 | | libcaes_internal_context_t *internal_context = NULL; |
1370 | | static char *function = "libcaes_crypt_cbc"; |
1371 | | unsigned long error_code = 0; |
1372 | | int safe_output_data_size = 0; |
1373 | | |
1374 | | if( context == NULL ) |
1375 | | { |
1376 | | libcerror_error_set( |
1377 | | error, |
1378 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1379 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1380 | | "%s: invalid context.", |
1381 | | function ); |
1382 | | |
1383 | | return( -1 ); |
1384 | | } |
1385 | | internal_context = (libcaes_internal_context_t *) context; |
1386 | | |
1387 | | if( ( internal_context->key_bit_size != 128 ) |
1388 | | && ( internal_context->key_bit_size != 192 ) |
1389 | | && ( internal_context->key_bit_size != 256 ) ) |
1390 | | { |
1391 | | libcerror_error_set( |
1392 | | error, |
1393 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1394 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1395 | | "%s: invalid context - unsupported key bit size.", |
1396 | | function ); |
1397 | | |
1398 | | return( -1 ); |
1399 | | } |
1400 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
1401 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
1402 | | { |
1403 | | libcerror_error_set( |
1404 | | error, |
1405 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1406 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1407 | | "%s: unsupported mode.", |
1408 | | function ); |
1409 | | |
1410 | | return( -1 ); |
1411 | | } |
1412 | | if( initialization_vector == NULL ) |
1413 | | { |
1414 | | libcerror_error_set( |
1415 | | error, |
1416 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1417 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1418 | | "%s: invalid initialization vector.", |
1419 | | function ); |
1420 | | |
1421 | | return( -1 ); |
1422 | | } |
1423 | | if( initialization_vector_size != 16 ) |
1424 | | { |
1425 | | libcerror_error_set( |
1426 | | error, |
1427 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1428 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1429 | | "%s: invalid initialization vector size value out of bounds.", |
1430 | | function ); |
1431 | | |
1432 | | return( -1 ); |
1433 | | } |
1434 | | if( input_data == NULL ) |
1435 | | { |
1436 | | libcerror_error_set( |
1437 | | error, |
1438 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1439 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1440 | | "%s: invalid input data.", |
1441 | | function ); |
1442 | | |
1443 | | return( -1 ); |
1444 | | } |
1445 | | /* Check if the input data size is a multitude of 16-byte |
1446 | | */ |
1447 | | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
1448 | | || ( input_data_size > (size_t) INT_MAX ) ) |
1449 | | { |
1450 | | libcerror_error_set( |
1451 | | error, |
1452 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1453 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1454 | | "%s: invalid input data size value out of bounds.", |
1455 | | function ); |
1456 | | |
1457 | | return( -1 ); |
1458 | | } |
1459 | | if( output_data == NULL ) |
1460 | | { |
1461 | | libcerror_error_set( |
1462 | | error, |
1463 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1464 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1465 | | "%s: invalid output data.", |
1466 | | function ); |
1467 | | |
1468 | | return( -1 ); |
1469 | | } |
1470 | | if( ( output_data_size < input_data_size ) |
1471 | | || ( output_data_size > (size_t) INT_MAX ) ) |
1472 | | { |
1473 | | libcerror_error_set( |
1474 | | error, |
1475 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1476 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1477 | | "%s: invalid output data size value out of bounds.", |
1478 | | function ); |
1479 | | |
1480 | | return( -1 ); |
1481 | | } |
1482 | | if( memory_set( |
1483 | | block_data, |
1484 | | 0, |
1485 | | EVP_MAX_BLOCK_LENGTH ) == NULL ) |
1486 | | { |
1487 | | libcerror_error_set( |
1488 | | error, |
1489 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1490 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1491 | | "%s: unable to clear input block data.", |
1492 | | function ); |
1493 | | |
1494 | | goto on_error; |
1495 | | } |
1496 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1497 | | if( EVP_CIPHER_CTX_reset( |
1498 | | internal_context->evp_cipher_context ) != 1 ) |
1499 | | { |
1500 | | error_code = ERR_get_error(); |
1501 | | |
1502 | | ERR_error_string_n( |
1503 | | error_code, |
1504 | | error_string, |
1505 | | 256 ); |
1506 | | |
1507 | | libcerror_error_set( |
1508 | | error, |
1509 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1510 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
1511 | | "%s: unable to reset cipher context with error: %s.", |
1512 | | function, |
1513 | | error_string ); |
1514 | | |
1515 | | goto on_error; |
1516 | | } |
1517 | | if( internal_context->key_bit_size == 128 ) |
1518 | | { |
1519 | | cipher_string = "AES-128-CBC"; |
1520 | | } |
1521 | | else if( internal_context->key_bit_size == 192 ) |
1522 | | { |
1523 | | cipher_string = "AES-192-CBC"; |
1524 | | } |
1525 | | else if( internal_context->key_bit_size == 256 ) |
1526 | | { |
1527 | | cipher_string = "AES-256-CBC"; |
1528 | | } |
1529 | | cipher = EVP_CIPHER_fetch( |
1530 | | NULL, |
1531 | | cipher_string, |
1532 | | NULL ); |
1533 | | |
1534 | | if( cipher == NULL ) |
1535 | | { |
1536 | | libcerror_error_set( |
1537 | | error, |
1538 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1539 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
1540 | | "%s: missing cipher.", |
1541 | | function ); |
1542 | | |
1543 | | goto on_error; |
1544 | | } |
1545 | | parameters[0] = OSSL_PARAM_construct_uint( |
1546 | | OSSL_CIPHER_PARAM_PADDING, |
1547 | | &padding ); |
1548 | | |
1549 | | parameters[1] = OSSL_PARAM_construct_end(); |
1550 | | |
1551 | | if( EVP_CipherInit_ex2( |
1552 | | internal_context->evp_cipher_context, |
1553 | | cipher, |
1554 | | (unsigned char *) internal_context->key, |
1555 | | (unsigned char *) initialization_vector, |
1556 | | mode, |
1557 | | parameters ) != 1 ) |
1558 | | { |
1559 | | error_code = ERR_get_error(); |
1560 | | |
1561 | | ERR_error_string_n( |
1562 | | error_code, |
1563 | | error_string, |
1564 | | 256 ); |
1565 | | |
1566 | | libcerror_error_set( |
1567 | | error, |
1568 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1569 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
1570 | | "%s: unable to initialize cipher with error: %s.", |
1571 | | function, |
1572 | | error_string ); |
1573 | | |
1574 | | goto on_error; |
1575 | | } |
1576 | | #else |
1577 | | if( internal_context->key_bit_size == 128 ) |
1578 | | { |
1579 | | cipher = EVP_aes_128_cbc(); |
1580 | | } |
1581 | | else if( internal_context->key_bit_size == 192 ) |
1582 | | { |
1583 | | cipher = EVP_aes_192_cbc(); |
1584 | | } |
1585 | | else if( internal_context->key_bit_size == 256 ) |
1586 | | { |
1587 | | cipher = EVP_aes_256_cbc(); |
1588 | | } |
1589 | | if( EVP_CipherInit_ex( |
1590 | | internal_context->evp_cipher_context, |
1591 | | cipher, |
1592 | | NULL, |
1593 | | (unsigned char *) internal_context->key, |
1594 | | (unsigned char *) initialization_vector, |
1595 | | mode ) != 1 ) |
1596 | | { |
1597 | | error_code = ERR_get_error(); |
1598 | | |
1599 | | ERR_error_string_n( |
1600 | | error_code, |
1601 | | error_string, |
1602 | | 256 ); |
1603 | | |
1604 | | libcerror_error_set( |
1605 | | error, |
1606 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1607 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
1608 | | "%s: unable to initialize cipher with error: %s.", |
1609 | | function, |
1610 | | error_string ); |
1611 | | |
1612 | | goto on_error; |
1613 | | } |
1614 | | if( EVP_CIPHER_CTX_set_padding( |
1615 | | internal_context->evp_cipher_context, |
1616 | | 1 ) != 1 ) |
1617 | | { |
1618 | | error_code = ERR_get_error(); |
1619 | | |
1620 | | ERR_error_string_n( |
1621 | | error_code, |
1622 | | error_string, |
1623 | | 256 ); |
1624 | | |
1625 | | libcerror_error_set( |
1626 | | error, |
1627 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1628 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
1629 | | "%s: unable to set padding in context with error: %s.", |
1630 | | function, |
1631 | | error_string ); |
1632 | | |
1633 | | goto on_error; |
1634 | | } |
1635 | | #endif /* defined( HAVE_EVP_CIPHERINIT_EX2 ) */ |
1636 | | |
1637 | | if( EVP_CipherUpdate( |
1638 | | internal_context->evp_cipher_context, |
1639 | | (unsigned char *) output_data, |
1640 | | &safe_output_data_size, |
1641 | | (unsigned char *) input_data, |
1642 | | input_data_size ) != 1 ) |
1643 | | { |
1644 | | error_code = ERR_get_error(); |
1645 | | |
1646 | | ERR_error_string_n( |
1647 | | error_code, |
1648 | | error_string, |
1649 | | 256 ); |
1650 | | |
1651 | | libcerror_error_set( |
1652 | | error, |
1653 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1654 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
1655 | | "%s: unable to update cipher with error: %s.", |
1656 | | function, |
1657 | | error_string ); |
1658 | | |
1659 | | goto on_error; |
1660 | | } |
1661 | | /* Just ignore the output of this function |
1662 | | */ |
1663 | | EVP_CipherFinal_ex( |
1664 | | internal_context->evp_cipher_context, |
1665 | | (unsigned char *) block_data, |
1666 | | &safe_output_data_size ); |
1667 | | |
1668 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1669 | | EVP_CIPHER_free( |
1670 | | cipher ); |
1671 | | #endif |
1672 | | return( 1 ); |
1673 | | |
1674 | | on_error: |
1675 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1676 | | if( cipher != NULL ) |
1677 | | { |
1678 | | EVP_CIPHER_free( |
1679 | | cipher ); |
1680 | | } |
1681 | | #endif |
1682 | | return( -1 ); |
1683 | | } |
1684 | | |
1685 | | #else |
1686 | | |
1687 | | /* De- or encrypts a block of data using AES-CBC (Cipher Block Chaining) using fallback implementation |
1688 | | * The size must be a multitude of the AES block size (16 byte) |
1689 | | * Returns 1 if successful or -1 on error |
1690 | | */ |
1691 | | int libcaes_crypt_cbc( |
1692 | | libcaes_context_t *context, |
1693 | | int mode, |
1694 | | const uint8_t *initialization_vector, |
1695 | | size_t initialization_vector_size, |
1696 | | const uint8_t *input_data, |
1697 | | size_t input_data_size, |
1698 | | uint8_t *output_data, |
1699 | | size_t output_data_size, |
1700 | | libcerror_error_t **error ) |
1701 | 9.91k | { |
1702 | 9.91k | uint8_t internal_initialization_vector[ 16 ]; |
1703 | | |
1704 | 9.91k | static char *function = "libcaes_crypt_cbc"; |
1705 | 9.91k | size_t data_offset = 0; |
1706 | | |
1707 | | #if !defined( LIBCAES_UNFOLLED_LOOPS ) |
1708 | | uint8_t block_index = 0; |
1709 | | #endif |
1710 | | |
1711 | 9.91k | if( context == NULL ) |
1712 | 0 | { |
1713 | 0 | libcerror_error_set( |
1714 | 0 | error, |
1715 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1716 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1717 | 0 | "%s: invalid context.", |
1718 | 0 | function ); |
1719 | |
|
1720 | 0 | return( -1 ); |
1721 | 0 | } |
1722 | 9.91k | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
1723 | 50 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
1724 | 0 | { |
1725 | 0 | libcerror_error_set( |
1726 | 0 | error, |
1727 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1728 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1729 | 0 | "%s: unsupported mode.", |
1730 | 0 | function ); |
1731 | |
|
1732 | 0 | return( -1 ); |
1733 | 0 | } |
1734 | 9.91k | if( initialization_vector == NULL ) |
1735 | 0 | { |
1736 | 0 | libcerror_error_set( |
1737 | 0 | error, |
1738 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1739 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1740 | 0 | "%s: invalid initialization vector.", |
1741 | 0 | function ); |
1742 | |
|
1743 | 0 | return( -1 ); |
1744 | 0 | } |
1745 | 9.91k | if( initialization_vector_size != 16 ) |
1746 | 0 | { |
1747 | 0 | libcerror_error_set( |
1748 | 0 | error, |
1749 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1750 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1751 | 0 | "%s: invalid initialization vector size value out of bounds.", |
1752 | 0 | function ); |
1753 | |
|
1754 | 0 | return( -1 ); |
1755 | 0 | } |
1756 | 9.91k | if( input_data == NULL ) |
1757 | 0 | { |
1758 | 0 | libcerror_error_set( |
1759 | 0 | error, |
1760 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1761 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1762 | 0 | "%s: invalid input data.", |
1763 | 0 | function ); |
1764 | |
|
1765 | 0 | return( -1 ); |
1766 | 0 | } |
1767 | | /* Check if the input data size is a multitude of 16-byte |
1768 | | */ |
1769 | 9.91k | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
1770 | 9.90k | || ( input_data_size < 16 ) |
1771 | 9.90k | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
1772 | 7 | { |
1773 | 7 | libcerror_error_set( |
1774 | 7 | error, |
1775 | 7 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1776 | 7 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1777 | 7 | "%s: invalid input data size value out of bounds.", |
1778 | 7 | function ); |
1779 | | |
1780 | 7 | return( -1 ); |
1781 | 7 | } |
1782 | 9.90k | if( output_data == NULL ) |
1783 | 0 | { |
1784 | 0 | libcerror_error_set( |
1785 | 0 | error, |
1786 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1787 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1788 | 0 | "%s: invalid output data.", |
1789 | 0 | function ); |
1790 | |
|
1791 | 0 | return( -1 ); |
1792 | 0 | } |
1793 | 9.90k | if( ( output_data_size < input_data_size ) |
1794 | 9.86k | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
1795 | 41 | { |
1796 | 41 | libcerror_error_set( |
1797 | 41 | error, |
1798 | 41 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1799 | 41 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1800 | 41 | "%s: invalid output data size value of bounds.", |
1801 | 41 | function ); |
1802 | | |
1803 | 41 | return( -1 ); |
1804 | 41 | } |
1805 | 9.86k | if( memory_copy( |
1806 | 9.86k | internal_initialization_vector, |
1807 | 9.86k | initialization_vector, |
1808 | 9.86k | 16 ) == NULL ) |
1809 | 0 | { |
1810 | 0 | libcerror_error_set( |
1811 | 0 | error, |
1812 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1813 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1814 | 0 | "%s: unable to copy initialization vector.", |
1815 | 0 | function ); |
1816 | |
|
1817 | 0 | goto on_error; |
1818 | 0 | } |
1819 | 9.86k | if( ( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
1820 | 4 | && ( output_data != input_data ) ) |
1821 | 4 | { |
1822 | 4 | if( memory_copy( |
1823 | 4 | output_data, |
1824 | 4 | input_data, |
1825 | 4 | input_data_size ) == NULL ) |
1826 | 0 | { |
1827 | 0 | libcerror_error_set( |
1828 | 0 | error, |
1829 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1830 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1831 | 0 | "%s: unable to copy input data to output data.", |
1832 | 0 | function ); |
1833 | |
|
1834 | 0 | goto on_error; |
1835 | 0 | } |
1836 | 4 | } |
1837 | 306k | while( data_offset <= ( input_data_size - 16 ) ) |
1838 | 296k | { |
1839 | 296k | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
1840 | 10 | { |
1841 | 10 | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
1842 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 0 ]; |
1843 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 1 ]; |
1844 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 2 ]; |
1845 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 3 ]; |
1846 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 4 ]; |
1847 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 5 ]; |
1848 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 6 ]; |
1849 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 7 ]; |
1850 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 8 ]; |
1851 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 9 ]; |
1852 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 10 ]; |
1853 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 11 ]; |
1854 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 12 ]; |
1855 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 13 ]; |
1856 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 14 ]; |
1857 | 10 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 15 ]; |
1858 | | #else |
1859 | | for( block_index = 0; |
1860 | | block_index < 16; |
1861 | | block_index++ ) |
1862 | | { |
1863 | | output_data[ data_offset++ ] ^= internal_initialization_vector[ block_index ]; |
1864 | | } |
1865 | | #endif |
1866 | 10 | data_offset -= 16; |
1867 | | |
1868 | 10 | if( libcaes_crypt_ecb( |
1869 | 10 | context, |
1870 | 10 | LIBCAES_CRYPT_MODE_ENCRYPT, |
1871 | 10 | &( output_data[ data_offset ] ), |
1872 | 10 | 16, |
1873 | 10 | &( output_data[ data_offset ] ), |
1874 | 10 | 16, |
1875 | 10 | error ) != 1 ) |
1876 | 0 | { |
1877 | 0 | libcerror_error_set( |
1878 | 0 | error, |
1879 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
1880 | 0 | LIBCERROR_ENCRYPTION_ERROR_ENCRYPT_FAILED, |
1881 | 0 | "%s: unable to encrypt output data.", |
1882 | 0 | function ); |
1883 | |
|
1884 | 0 | goto on_error; |
1885 | 0 | } |
1886 | 10 | if( memory_copy( |
1887 | 10 | internal_initialization_vector, |
1888 | 10 | &( output_data[ data_offset ] ), |
1889 | 10 | 16 ) == NULL ) |
1890 | 0 | { |
1891 | 0 | libcerror_error_set( |
1892 | 0 | error, |
1893 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1894 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1895 | 0 | "%s: unable to copy enrypted output data to initialization vector.", |
1896 | 0 | function ); |
1897 | |
|
1898 | 0 | goto on_error; |
1899 | 0 | } |
1900 | 10 | } |
1901 | 296k | else |
1902 | 296k | { |
1903 | 296k | if( libcaes_crypt_ecb( |
1904 | 296k | context, |
1905 | 296k | LIBCAES_CRYPT_MODE_DECRYPT, |
1906 | 296k | &( input_data[ data_offset ] ), |
1907 | 296k | 16, |
1908 | 296k | &( output_data[ data_offset ] ), |
1909 | 296k | 16, |
1910 | 296k | error ) != 1 ) |
1911 | 0 | { |
1912 | 0 | libcerror_error_set( |
1913 | 0 | error, |
1914 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
1915 | 0 | LIBCERROR_ENCRYPTION_ERROR_GENERIC, |
1916 | 0 | "%s: unable to decrypt output data.", |
1917 | 0 | function ); |
1918 | |
|
1919 | 0 | goto on_error; |
1920 | 0 | } |
1921 | 296k | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
1922 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 0 ]; |
1923 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 1 ]; |
1924 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 2 ]; |
1925 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 3 ]; |
1926 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 4 ]; |
1927 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 5 ]; |
1928 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 6 ]; |
1929 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 7 ]; |
1930 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 8 ]; |
1931 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 9 ]; |
1932 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 10 ]; |
1933 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 11 ]; |
1934 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 12 ]; |
1935 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 13 ]; |
1936 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 14 ]; |
1937 | 296k | output_data[ data_offset++ ] ^= internal_initialization_vector[ 15 ]; |
1938 | | #else |
1939 | | for( block_index = 0; |
1940 | | block_index < 16; |
1941 | | block_index++ ) |
1942 | | { |
1943 | | output_data[ data_offset++ ] ^= internal_initialization_vector[ block_index ]; |
1944 | | } |
1945 | | #endif |
1946 | 296k | data_offset -= 16; |
1947 | | |
1948 | 296k | if( memory_copy( |
1949 | 296k | internal_initialization_vector, |
1950 | 296k | &( input_data[ data_offset ] ), |
1951 | 296k | 16 ) == NULL ) |
1952 | 0 | { |
1953 | 0 | libcerror_error_set( |
1954 | 0 | error, |
1955 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1956 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1957 | 0 | "%s: unable to copy enrypted input data to initialization vector.", |
1958 | 0 | function ); |
1959 | |
|
1960 | 0 | goto on_error; |
1961 | 0 | } |
1962 | 296k | } |
1963 | 296k | data_offset += 16; |
1964 | 296k | } |
1965 | 9.86k | if( memory_set( |
1966 | 9.86k | internal_initialization_vector, |
1967 | 9.86k | 0, |
1968 | 9.86k | 16 ) == NULL ) |
1969 | 0 | { |
1970 | 0 | libcerror_error_set( |
1971 | 0 | error, |
1972 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1973 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1974 | 0 | "%s: unable to clear initialization vector.", |
1975 | 0 | function ); |
1976 | |
|
1977 | 0 | goto on_error; |
1978 | 0 | } |
1979 | 9.86k | return( 1 ); |
1980 | | |
1981 | 0 | on_error: |
1982 | 0 | memory_set( |
1983 | 0 | internal_initialization_vector, |
1984 | 0 | 0, |
1985 | 0 | 16 ); |
1986 | |
|
1987 | 0 | return( -1 ); |
1988 | 9.86k | } |
1989 | | |
1990 | | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_CBC_ENCRYPT ) */ |
1991 | | |
1992 | | /* De- or encrypts a block of data using AES-CCM (Counter with CBC-MAC) |
1993 | | * Note that the key must be set in encryption mode (LIBCAES_CRYPT_MODE_ENCRYPT) for both de- and encryption. |
1994 | | * |
1995 | | * WARNING: this function does not implement RFC 3610 compliant AES-CCM |
1996 | | * This function is deprecated use libcaes_crypt_ccm_ctr_only instead. |
1997 | | * |
1998 | | * Returns 1 if successful or -1 on error |
1999 | | */ |
2000 | | int libcaes_crypt_ccm( |
2001 | | libcaes_context_t *context, |
2002 | | int mode, |
2003 | | const uint8_t *nonce, |
2004 | | size_t nonce_size, |
2005 | | const uint8_t *input_data, |
2006 | | size_t input_data_size, |
2007 | | uint8_t *output_data, |
2008 | | size_t output_data_size, |
2009 | | libcerror_error_t **error ) |
2010 | 72 | { |
2011 | 72 | uint8_t block_data[ 16 ]; |
2012 | 72 | uint8_t internal_initialization_vector[ 16 ]; |
2013 | | |
2014 | 72 | static char *function = "libcaes_crypt_ccm"; |
2015 | 72 | size_t data_offset = 0; |
2016 | 72 | size_t remaining_data_size = 0; |
2017 | 72 | uint8_t block_index = 0; |
2018 | | |
2019 | 72 | if( context == NULL ) |
2020 | 0 | { |
2021 | 0 | libcerror_error_set( |
2022 | 0 | error, |
2023 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2024 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2025 | 0 | "%s: invalid context.", |
2026 | 0 | function ); |
2027 | |
|
2028 | 0 | return( -1 ); |
2029 | 0 | } |
2030 | 72 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2031 | 72 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2032 | 0 | { |
2033 | 0 | libcerror_error_set( |
2034 | 0 | error, |
2035 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2036 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2037 | 0 | "%s: unsupported mode.", |
2038 | 0 | function ); |
2039 | |
|
2040 | 0 | return( -1 ); |
2041 | 0 | } |
2042 | 72 | if( nonce == NULL ) |
2043 | 0 | { |
2044 | 0 | libcerror_error_set( |
2045 | 0 | error, |
2046 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2047 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2048 | 0 | "%s: invalid nonce.", |
2049 | 0 | function ); |
2050 | |
|
2051 | 0 | return( -1 ); |
2052 | 0 | } |
2053 | 72 | if( nonce_size >= (size_t) 15 ) |
2054 | 0 | { |
2055 | 0 | libcerror_error_set( |
2056 | 0 | error, |
2057 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2058 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2059 | 0 | "%s: invalid nonce size value out of bounds.", |
2060 | 0 | function ); |
2061 | |
|
2062 | 0 | return( -1 ); |
2063 | 0 | } |
2064 | 72 | if( input_data == NULL ) |
2065 | 0 | { |
2066 | 0 | libcerror_error_set( |
2067 | 0 | error, |
2068 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2069 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2070 | 0 | "%s: invalid input data.", |
2071 | 0 | function ); |
2072 | |
|
2073 | 0 | return( -1 ); |
2074 | 0 | } |
2075 | 72 | if( ( input_data_size < 16 ) |
2076 | 65 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2077 | 7 | { |
2078 | 7 | libcerror_error_set( |
2079 | 7 | error, |
2080 | 7 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2081 | 7 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2082 | 7 | "%s: invalid input data size value out of bounds.", |
2083 | 7 | function ); |
2084 | | |
2085 | 7 | return( -1 ); |
2086 | 7 | } |
2087 | 65 | if( output_data == NULL ) |
2088 | 0 | { |
2089 | 0 | libcerror_error_set( |
2090 | 0 | error, |
2091 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2092 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2093 | 0 | "%s: invalid output data.", |
2094 | 0 | function ); |
2095 | |
|
2096 | 0 | return( -1 ); |
2097 | 0 | } |
2098 | 65 | if( ( output_data_size < input_data_size ) |
2099 | 18 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2100 | 47 | { |
2101 | 47 | libcerror_error_set( |
2102 | 47 | error, |
2103 | 47 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2104 | 47 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2105 | 47 | "%s: invalid output data size value out of bounds.", |
2106 | 47 | function ); |
2107 | | |
2108 | 47 | return( -1 ); |
2109 | 47 | } |
2110 | | /* The IV consists of: |
2111 | | * 1 byte size value formatted as: 15 - nonce size - 1 |
2112 | | * a maximum of 14 bytes containing nonce bytes |
2113 | | * 1 byte counter |
2114 | | */ |
2115 | 18 | if( memory_set( |
2116 | 18 | internal_initialization_vector, |
2117 | 18 | 0, |
2118 | 18 | 16 ) == NULL ) |
2119 | 0 | { |
2120 | 0 | libcerror_error_set( |
2121 | 0 | error, |
2122 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2123 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2124 | 0 | "%s: unable to clear initialization vector.", |
2125 | 0 | function ); |
2126 | |
|
2127 | 0 | goto on_error; |
2128 | 0 | } |
2129 | 18 | if( memory_copy( |
2130 | 18 | &( internal_initialization_vector[ 1 ] ), |
2131 | 18 | nonce, |
2132 | 18 | nonce_size ) == NULL ) |
2133 | 0 | { |
2134 | 0 | libcerror_error_set( |
2135 | 0 | error, |
2136 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2137 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2138 | 0 | "%s: unable to copy nonce to initialization vector.", |
2139 | 0 | function ); |
2140 | |
|
2141 | 0 | goto on_error; |
2142 | 0 | } |
2143 | 18 | internal_initialization_vector[ 0 ] = 15 - (uint8_t) nonce_size - 1; |
2144 | | |
2145 | 18 | if( memory_copy( |
2146 | 18 | output_data, |
2147 | 18 | input_data, |
2148 | 18 | input_data_size ) == NULL ) |
2149 | 0 | { |
2150 | 0 | libcerror_error_set( |
2151 | 0 | error, |
2152 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2153 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2154 | 0 | "%s: unable to copy input data to output data.", |
2155 | 0 | function ); |
2156 | |
|
2157 | 0 | goto on_error; |
2158 | 0 | } |
2159 | 52 | while( data_offset <= ( input_data_size - 16 ) ) |
2160 | 34 | { |
2161 | 34 | if( libcaes_crypt_ecb( |
2162 | 34 | context, |
2163 | 34 | LIBCAES_CRYPT_MODE_ENCRYPT, |
2164 | 34 | internal_initialization_vector, |
2165 | 34 | 16, |
2166 | 34 | block_data, |
2167 | 34 | 16, |
2168 | 34 | error ) != 1 ) |
2169 | 0 | { |
2170 | 0 | libcerror_error_set( |
2171 | 0 | error, |
2172 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
2173 | 0 | LIBCERROR_ENCRYPTION_ERROR_ENCRYPT_FAILED, |
2174 | 0 | "%s: unable to encrypt initialization vector.", |
2175 | 0 | function ); |
2176 | |
|
2177 | 0 | goto on_error; |
2178 | 0 | } |
2179 | 34 | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
2180 | 34 | output_data[ data_offset++ ] ^= block_data[ 0 ]; |
2181 | 34 | output_data[ data_offset++ ] ^= block_data[ 1 ]; |
2182 | 34 | output_data[ data_offset++ ] ^= block_data[ 2 ]; |
2183 | 34 | output_data[ data_offset++ ] ^= block_data[ 3 ]; |
2184 | 34 | output_data[ data_offset++ ] ^= block_data[ 4 ]; |
2185 | 34 | output_data[ data_offset++ ] ^= block_data[ 5 ]; |
2186 | 34 | output_data[ data_offset++ ] ^= block_data[ 6 ]; |
2187 | 34 | output_data[ data_offset++ ] ^= block_data[ 7 ]; |
2188 | 34 | output_data[ data_offset++ ] ^= block_data[ 8 ]; |
2189 | 34 | output_data[ data_offset++ ] ^= block_data[ 9 ]; |
2190 | 34 | output_data[ data_offset++ ] ^= block_data[ 10 ]; |
2191 | 34 | output_data[ data_offset++ ] ^= block_data[ 11 ]; |
2192 | 34 | output_data[ data_offset++ ] ^= block_data[ 12 ]; |
2193 | 34 | output_data[ data_offset++ ] ^= block_data[ 13 ]; |
2194 | 34 | output_data[ data_offset++ ] ^= block_data[ 14 ]; |
2195 | 34 | output_data[ data_offset++ ] ^= block_data[ 15 ]; |
2196 | | #else |
2197 | | for( block_index = 0; |
2198 | | block_index < 16; |
2199 | | block_index++ ) |
2200 | | { |
2201 | | output_data[ data_offset++ ] ^= block_data[ block_index ]; |
2202 | | } |
2203 | | #endif |
2204 | 34 | internal_initialization_vector[ 15 ] += 1; |
2205 | 34 | } |
2206 | 18 | if( data_offset < input_data_size ) |
2207 | 14 | { |
2208 | 14 | remaining_data_size = input_data_size - data_offset; |
2209 | | |
2210 | 14 | if( libcaes_crypt_ecb( |
2211 | 14 | context, |
2212 | 14 | LIBCAES_CRYPT_MODE_ENCRYPT, |
2213 | 14 | internal_initialization_vector, |
2214 | 14 | 16, |
2215 | 14 | block_data, |
2216 | 14 | 16, |
2217 | 14 | error ) != 1 ) |
2218 | 0 | { |
2219 | 0 | libcerror_error_set( |
2220 | 0 | error, |
2221 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
2222 | 0 | LIBCERROR_ENCRYPTION_ERROR_ENCRYPT_FAILED, |
2223 | 0 | "%s: unable to encrypt initialization vector.", |
2224 | 0 | function ); |
2225 | |
|
2226 | 0 | goto on_error; |
2227 | 0 | } |
2228 | 14 | for( block_index = 0; |
2229 | 114 | block_index < (uint8_t) remaining_data_size; |
2230 | 100 | block_index++ ) |
2231 | 100 | { |
2232 | 100 | output_data[ data_offset++ ] ^= block_data[ block_index ]; |
2233 | 100 | } |
2234 | 14 | } |
2235 | 18 | if( memory_set( |
2236 | 18 | block_data, |
2237 | 18 | 0, |
2238 | 18 | 16 ) == NULL ) |
2239 | 0 | { |
2240 | 0 | libcerror_error_set( |
2241 | 0 | error, |
2242 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2243 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2244 | 0 | "%s: unable to clear block data.", |
2245 | 0 | function ); |
2246 | |
|
2247 | 0 | goto on_error; |
2248 | 0 | } |
2249 | 18 | if( memory_set( |
2250 | 18 | internal_initialization_vector, |
2251 | 18 | 0, |
2252 | 18 | 16 ) == NULL ) |
2253 | 0 | { |
2254 | 0 | libcerror_error_set( |
2255 | 0 | error, |
2256 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2257 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2258 | 0 | "%s: unable to clear initialization vector.", |
2259 | 0 | function ); |
2260 | |
|
2261 | 0 | goto on_error; |
2262 | 0 | } |
2263 | 18 | return( 1 ); |
2264 | | |
2265 | 0 | on_error: |
2266 | 0 | memory_set( |
2267 | 0 | block_data, |
2268 | 0 | 0, |
2269 | 0 | 16 ); |
2270 | |
|
2271 | 0 | memory_set( |
2272 | 0 | internal_initialization_vector, |
2273 | 0 | 0, |
2274 | 0 | 16 ); |
2275 | |
|
2276 | 0 | return( -1 ); |
2277 | 18 | } |
2278 | | |
2279 | | /* De- or encrypts a block of data using only the Counter (CTR) mode of AES-CCM (Counter with CBC-MAC) |
2280 | | * Note that the key must be set in encryption mode (LIBCAES_CRYPT_MODE_ENCRYPT) for both de- and encryption. |
2281 | | * Returns 1 if successful or -1 on error |
2282 | | */ |
2283 | | int libcaes_crypt_ccm_ctr_only( |
2284 | | libcaes_context_t *context, |
2285 | | int mode, |
2286 | | const uint8_t *nonce, |
2287 | | size_t nonce_size, |
2288 | | const uint8_t *input_data, |
2289 | | size_t input_data_size, |
2290 | | uint8_t *output_data, |
2291 | | size_t output_data_size, |
2292 | | libcerror_error_t **error ) |
2293 | 1.33k | { |
2294 | 1.33k | uint8_t block_data[ 16 ]; |
2295 | 1.33k | uint8_t internal_initialization_vector[ 16 ]; |
2296 | | |
2297 | 1.33k | static char *function = "libcaes_crypt_ccm_ctr_only"; |
2298 | 1.33k | size_t data_offset = 0; |
2299 | 1.33k | size_t remaining_data_size = 0; |
2300 | 1.33k | uint8_t block_index = 0; |
2301 | 1.33k | uint8_t l_prime = 0; |
2302 | | |
2303 | 1.33k | if( context == NULL ) |
2304 | 0 | { |
2305 | 0 | libcerror_error_set( |
2306 | 0 | error, |
2307 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2308 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2309 | 0 | "%s: invalid context.", |
2310 | 0 | function ); |
2311 | |
|
2312 | 0 | return( -1 ); |
2313 | 0 | } |
2314 | 1.33k | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2315 | 0 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2316 | 0 | { |
2317 | 0 | libcerror_error_set( |
2318 | 0 | error, |
2319 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2320 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2321 | 0 | "%s: unsupported mode.", |
2322 | 0 | function ); |
2323 | |
|
2324 | 0 | return( -1 ); |
2325 | 0 | } |
2326 | 1.33k | if( nonce == NULL ) |
2327 | 0 | { |
2328 | 0 | libcerror_error_set( |
2329 | 0 | error, |
2330 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2331 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2332 | 0 | "%s: invalid nonce.", |
2333 | 0 | function ); |
2334 | |
|
2335 | 0 | return( -1 ); |
2336 | 0 | } |
2337 | 1.33k | if( nonce_size >= (size_t) 15 ) |
2338 | 0 | { |
2339 | 0 | libcerror_error_set( |
2340 | 0 | error, |
2341 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2342 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2343 | 0 | "%s: invalid nonce size value out of bounds.", |
2344 | 0 | function ); |
2345 | |
|
2346 | 0 | return( -1 ); |
2347 | 0 | } |
2348 | 1.33k | if( input_data == NULL ) |
2349 | 0 | { |
2350 | 0 | libcerror_error_set( |
2351 | 0 | error, |
2352 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2353 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2354 | 0 | "%s: invalid input data.", |
2355 | 0 | function ); |
2356 | |
|
2357 | 0 | return( -1 ); |
2358 | 0 | } |
2359 | 1.33k | if( ( input_data_size < 16 ) |
2360 | 1.32k | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2361 | 5 | { |
2362 | 5 | libcerror_error_set( |
2363 | 5 | error, |
2364 | 5 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2365 | 5 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2366 | 5 | "%s: invalid input data size value out of bounds.", |
2367 | 5 | function ); |
2368 | | |
2369 | 5 | return( -1 ); |
2370 | 5 | } |
2371 | 1.32k | if( output_data == NULL ) |
2372 | 0 | { |
2373 | 0 | libcerror_error_set( |
2374 | 0 | error, |
2375 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2376 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2377 | 0 | "%s: invalid output data.", |
2378 | 0 | function ); |
2379 | |
|
2380 | 0 | return( -1 ); |
2381 | 0 | } |
2382 | 1.32k | if( ( output_data_size < input_data_size ) |
2383 | 1.32k | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2384 | 0 | { |
2385 | 0 | libcerror_error_set( |
2386 | 0 | error, |
2387 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2388 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2389 | 0 | "%s: invalid output data size value out of bounds.", |
2390 | 0 | function ); |
2391 | |
|
2392 | 0 | return( -1 ); |
2393 | 0 | } |
2394 | 1.32k | l_prime = 15 - (uint8_t) nonce_size - 1; |
2395 | | |
2396 | | /* The IV consists of: |
2397 | | * 1 byte size value formatted as: 15 - nonce size - 1 |
2398 | | * a maximum of 14 bytes containing nonce bytes |
2399 | | * 1 byte counter |
2400 | | */ |
2401 | 1.32k | if( memory_set( |
2402 | 1.32k | internal_initialization_vector, |
2403 | 1.32k | 0, |
2404 | 1.32k | 16 ) == NULL ) |
2405 | 0 | { |
2406 | 0 | libcerror_error_set( |
2407 | 0 | error, |
2408 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2409 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2410 | 0 | "%s: unable to clear initialization vector.", |
2411 | 0 | function ); |
2412 | |
|
2413 | 0 | goto on_error; |
2414 | 0 | } |
2415 | 1.32k | internal_initialization_vector[ 0 ] = l_prime; |
2416 | | |
2417 | 1.32k | if( memory_copy( |
2418 | 1.32k | &( internal_initialization_vector[ 1 ] ), |
2419 | 1.32k | nonce, |
2420 | 1.32k | nonce_size ) == NULL ) |
2421 | 0 | { |
2422 | 0 | libcerror_error_set( |
2423 | 0 | error, |
2424 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2425 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2426 | 0 | "%s: unable to copy nonce to initialization vector.", |
2427 | 0 | function ); |
2428 | |
|
2429 | 0 | goto on_error; |
2430 | 0 | } |
2431 | 1.32k | if( memory_copy( |
2432 | 1.32k | output_data, |
2433 | 1.32k | input_data, |
2434 | 1.32k | input_data_size ) == NULL ) |
2435 | 0 | { |
2436 | 0 | libcerror_error_set( |
2437 | 0 | error, |
2438 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2439 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2440 | 0 | "%s: unable to copy input data to output data.", |
2441 | 0 | function ); |
2442 | |
|
2443 | 0 | goto on_error; |
2444 | 0 | } |
2445 | 13.9k | while( data_offset <= ( input_data_size - 16 ) ) |
2446 | 12.6k | { |
2447 | 12.6k | internal_initialization_vector[ 15 ] += 1; |
2448 | | |
2449 | 12.6k | if( libcaes_crypt_ecb( |
2450 | 12.6k | context, |
2451 | 12.6k | LIBCAES_CRYPT_MODE_ENCRYPT, |
2452 | 12.6k | internal_initialization_vector, |
2453 | 12.6k | 16, |
2454 | 12.6k | block_data, |
2455 | 12.6k | 16, |
2456 | 12.6k | error ) != 1 ) |
2457 | 0 | { |
2458 | 0 | libcerror_error_set( |
2459 | 0 | error, |
2460 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
2461 | 0 | LIBCERROR_ENCRYPTION_ERROR_ENCRYPT_FAILED, |
2462 | 0 | "%s: unable to encrypt initialization vector.", |
2463 | 0 | function ); |
2464 | |
|
2465 | 0 | goto on_error; |
2466 | 0 | } |
2467 | 12.6k | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
2468 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 0 ]; |
2469 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 1 ]; |
2470 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 2 ]; |
2471 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 3 ]; |
2472 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 4 ]; |
2473 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 5 ]; |
2474 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 6 ]; |
2475 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 7 ]; |
2476 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 8 ]; |
2477 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 9 ]; |
2478 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 10 ]; |
2479 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 11 ]; |
2480 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 12 ]; |
2481 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 13 ]; |
2482 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 14 ]; |
2483 | 12.6k | output_data[ data_offset++ ] ^= block_data[ 15 ]; |
2484 | | #else |
2485 | | for( block_index = 0; |
2486 | | block_index < 16; |
2487 | | block_index++ ) |
2488 | | { |
2489 | | output_data[ data_offset++ ] ^= block_data[ block_index ]; |
2490 | | } |
2491 | | #endif |
2492 | 12.6k | } |
2493 | 1.32k | if( data_offset < input_data_size ) |
2494 | 1.14k | { |
2495 | 1.14k | remaining_data_size = input_data_size - data_offset; |
2496 | | |
2497 | 1.14k | internal_initialization_vector[ 15 ] += 1; |
2498 | | |
2499 | 1.14k | if( libcaes_crypt_ecb( |
2500 | 1.14k | context, |
2501 | 1.14k | LIBCAES_CRYPT_MODE_ENCRYPT, |
2502 | 1.14k | internal_initialization_vector, |
2503 | 1.14k | 16, |
2504 | 1.14k | block_data, |
2505 | 1.14k | 16, |
2506 | 1.14k | error ) != 1 ) |
2507 | 0 | { |
2508 | 0 | libcerror_error_set( |
2509 | 0 | error, |
2510 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
2511 | 0 | LIBCERROR_ENCRYPTION_ERROR_ENCRYPT_FAILED, |
2512 | 0 | "%s: unable to encrypt initialization vector.", |
2513 | 0 | function ); |
2514 | |
|
2515 | 0 | goto on_error; |
2516 | 0 | } |
2517 | 1.14k | for( block_index = 0; |
2518 | 8.33k | block_index < (uint8_t) remaining_data_size; |
2519 | 7.18k | block_index++ ) |
2520 | 7.18k | { |
2521 | 7.18k | output_data[ data_offset++ ] ^= block_data[ block_index ]; |
2522 | 7.18k | } |
2523 | 1.14k | } |
2524 | 1.32k | if( memory_set( |
2525 | 1.32k | block_data, |
2526 | 1.32k | 0, |
2527 | 1.32k | 16 ) == NULL ) |
2528 | 0 | { |
2529 | 0 | libcerror_error_set( |
2530 | 0 | error, |
2531 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2532 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2533 | 0 | "%s: unable to clear block data.", |
2534 | 0 | function ); |
2535 | |
|
2536 | 0 | goto on_error; |
2537 | 0 | } |
2538 | 1.32k | if( memory_set( |
2539 | 1.32k | internal_initialization_vector, |
2540 | 1.32k | 0, |
2541 | 1.32k | 16 ) == NULL ) |
2542 | 0 | { |
2543 | 0 | libcerror_error_set( |
2544 | 0 | error, |
2545 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2546 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2547 | 0 | "%s: unable to clear initialization vector.", |
2548 | 0 | function ); |
2549 | |
|
2550 | 0 | goto on_error; |
2551 | 0 | } |
2552 | 1.32k | return( 1 ); |
2553 | | |
2554 | 0 | on_error: |
2555 | 0 | memory_set( |
2556 | 0 | block_data, |
2557 | 0 | 0, |
2558 | 0 | 16 ); |
2559 | |
|
2560 | 0 | memory_set( |
2561 | 0 | internal_initialization_vector, |
2562 | 0 | 0, |
2563 | 0 | 16 ); |
2564 | |
|
2565 | 0 | return( -1 ); |
2566 | 1.32k | } |
2567 | | |
2568 | | /* De- or encrypts a block of data using AES-CFB (Cipher Feedback Mode) |
2569 | | * Note that the key must be set with mode LIBCAES_CRYPT_MODE_ENCRYPT |
2570 | | * Returns 1 if successful or -1 on error |
2571 | | */ |
2572 | | int libcaes_crypt_cfb( |
2573 | | libcaes_context_t *context, |
2574 | | int mode, |
2575 | | const uint8_t *initialization_vector, |
2576 | | size_t initialization_vector_size, |
2577 | | const uint8_t *input_data, |
2578 | | size_t input_data_size, |
2579 | | uint8_t *output_data, |
2580 | | size_t output_data_size, |
2581 | | libcerror_error_t **error ) |
2582 | 0 | { |
2583 | 0 | uint8_t internal_initialization_vector[ 16 ]; |
2584 | |
|
2585 | 0 | static char *function = "libcaes_crypt_cfb"; |
2586 | 0 | size_t data_offset = 0; |
2587 | 0 | size_t initialization_vector_index = 0; |
2588 | 0 | uint8_t byte_value = 0; |
2589 | |
|
2590 | 0 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2591 | 0 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2592 | 0 | { |
2593 | 0 | libcerror_error_set( |
2594 | 0 | error, |
2595 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2596 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2597 | 0 | "%s: unsupported mode.", |
2598 | 0 | function ); |
2599 | |
|
2600 | 0 | return( -1 ); |
2601 | 0 | } |
2602 | 0 | if( initialization_vector == NULL ) |
2603 | 0 | { |
2604 | 0 | libcerror_error_set( |
2605 | 0 | error, |
2606 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2607 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2608 | 0 | "%s: invalid initialization vector.", |
2609 | 0 | function ); |
2610 | |
|
2611 | 0 | return( -1 ); |
2612 | 0 | } |
2613 | 0 | if( initialization_vector_size != 16 ) |
2614 | 0 | { |
2615 | 0 | libcerror_error_set( |
2616 | 0 | error, |
2617 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2618 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2619 | 0 | "%s: invalid initialization vector size value out of bounds.", |
2620 | 0 | function ); |
2621 | |
|
2622 | 0 | return( -1 ); |
2623 | 0 | } |
2624 | 0 | if( input_data == NULL ) |
2625 | 0 | { |
2626 | 0 | libcerror_error_set( |
2627 | 0 | error, |
2628 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2629 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2630 | 0 | "%s: invalid input data.", |
2631 | 0 | function ); |
2632 | |
|
2633 | 0 | return( -1 ); |
2634 | 0 | } |
2635 | | /* Check if the input data size is a multitude of 16-byte |
2636 | | */ |
2637 | 0 | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
2638 | 0 | || ( input_data_size < 16 ) |
2639 | 0 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2640 | 0 | { |
2641 | 0 | libcerror_error_set( |
2642 | 0 | error, |
2643 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2644 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2645 | 0 | "%s: invalid input data size value out of bounds.", |
2646 | 0 | function ); |
2647 | |
|
2648 | 0 | return( -1 ); |
2649 | 0 | } |
2650 | 0 | if( output_data == NULL ) |
2651 | 0 | { |
2652 | 0 | libcerror_error_set( |
2653 | 0 | error, |
2654 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2655 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2656 | 0 | "%s: invalid output data.", |
2657 | 0 | function ); |
2658 | |
|
2659 | 0 | return( -1 ); |
2660 | 0 | } |
2661 | 0 | if( ( output_data_size < input_data_size ) |
2662 | 0 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2663 | 0 | { |
2664 | 0 | libcerror_error_set( |
2665 | 0 | error, |
2666 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2667 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2668 | 0 | "%s: invalid output data size value out of bounds.", |
2669 | 0 | function ); |
2670 | |
|
2671 | 0 | return( -1 ); |
2672 | 0 | } |
2673 | 0 | if( memory_copy( |
2674 | 0 | internal_initialization_vector, |
2675 | 0 | initialization_vector, |
2676 | 0 | 16 ) == NULL ) |
2677 | 0 | { |
2678 | 0 | libcerror_error_set( |
2679 | 0 | error, |
2680 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2681 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2682 | 0 | "%s: unable to copy initialization vector.", |
2683 | 0 | function ); |
2684 | |
|
2685 | 0 | goto on_error; |
2686 | 0 | } |
2687 | 0 | initialization_vector_index = 16; |
2688 | |
|
2689 | 0 | for( data_offset = 0; |
2690 | 0 | data_offset < input_data_size; |
2691 | 0 | data_offset++ ) |
2692 | 0 | { |
2693 | 0 | if( initialization_vector_index > 15 ) |
2694 | 0 | { |
2695 | 0 | if( libcaes_crypt_ecb( |
2696 | 0 | context, |
2697 | 0 | LIBCAES_CRYPT_MODE_ENCRYPT, |
2698 | 0 | internal_initialization_vector, |
2699 | 0 | initialization_vector_size, |
2700 | 0 | internal_initialization_vector, |
2701 | 0 | initialization_vector_size, |
2702 | 0 | error ) != 1 ) |
2703 | 0 | { |
2704 | 0 | libcerror_error_set( |
2705 | 0 | error, |
2706 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
2707 | 0 | LIBCERROR_ENCRYPTION_ERROR_GENERIC, |
2708 | 0 | "%s: unable to de/encrypt initialization vector.", |
2709 | 0 | function ); |
2710 | |
|
2711 | 0 | goto on_error; |
2712 | 0 | } |
2713 | 0 | initialization_vector_index = 0; |
2714 | 0 | } |
2715 | 0 | output_data[ data_offset ] = input_data[ data_offset ] ^ internal_initialization_vector[ initialization_vector_index ]; |
2716 | |
|
2717 | 0 | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
2718 | 0 | { |
2719 | 0 | byte_value = output_data[ data_offset ]; |
2720 | 0 | } |
2721 | 0 | else |
2722 | 0 | { |
2723 | 0 | byte_value = input_data[ data_offset ]; |
2724 | 0 | } |
2725 | 0 | internal_initialization_vector[ initialization_vector_index++ ] = byte_value; |
2726 | 0 | } |
2727 | 0 | if( memory_set( |
2728 | 0 | internal_initialization_vector, |
2729 | 0 | 0, |
2730 | 0 | 16 ) == NULL ) |
2731 | 0 | { |
2732 | 0 | libcerror_error_set( |
2733 | 0 | error, |
2734 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2735 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2736 | 0 | "%s: unable to clear initialization vector.", |
2737 | 0 | function ); |
2738 | |
|
2739 | 0 | goto on_error; |
2740 | 0 | } |
2741 | 0 | return( 1 ); |
2742 | | |
2743 | 0 | on_error: |
2744 | 0 | memory_set( |
2745 | 0 | internal_initialization_vector, |
2746 | 0 | 0, |
2747 | 0 | 16 ); |
2748 | |
|
2749 | 0 | return( -1 ); |
2750 | 0 | } |
2751 | | |
2752 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_ECB_ENCRYPT ) |
2753 | | |
2754 | | /* De- or encrypts a block of data using AES-ECB (Electronic CodeBook) using OpenSSL |
2755 | | * The size must be a multitude of the AES block size (16 byte) |
2756 | | * Returns 1 if successful or -1 on error |
2757 | | */ |
2758 | | int libcaes_crypt_ecb( |
2759 | | libcaes_context_t *context, |
2760 | | int mode, |
2761 | | const uint8_t *input_data, |
2762 | | size_t input_data_size, |
2763 | | uint8_t *output_data, |
2764 | | size_t output_data_size, |
2765 | | libcerror_error_t **error ) |
2766 | | { |
2767 | | libcaes_internal_context_t *internal_context = NULL; |
2768 | | static char *function = "libcaes_crypt_ecb"; |
2769 | | int result = 1; |
2770 | | int safe_mode = 0; |
2771 | | |
2772 | | if( context == NULL ) |
2773 | | { |
2774 | | libcerror_error_set( |
2775 | | error, |
2776 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2777 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2778 | | "%s: invalid context.", |
2779 | | function ); |
2780 | | |
2781 | | return( -1 ); |
2782 | | } |
2783 | | internal_context = (libcaes_internal_context_t *) context; |
2784 | | |
2785 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2786 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2787 | | { |
2788 | | libcerror_error_set( |
2789 | | error, |
2790 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2791 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2792 | | "%s: unsupported mode.", |
2793 | | function ); |
2794 | | |
2795 | | return( -1 ); |
2796 | | } |
2797 | | if( input_data == NULL ) |
2798 | | { |
2799 | | libcerror_error_set( |
2800 | | error, |
2801 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2802 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2803 | | "%s: invalid input data.", |
2804 | | function ); |
2805 | | |
2806 | | return( -1 ); |
2807 | | } |
2808 | | if( ( input_data_size < 16 ) |
2809 | | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2810 | | { |
2811 | | libcerror_error_set( |
2812 | | error, |
2813 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2814 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2815 | | "%s: invalid input data size value out of bounds.", |
2816 | | function ); |
2817 | | |
2818 | | return( -1 ); |
2819 | | } |
2820 | | if( output_data == NULL ) |
2821 | | { |
2822 | | libcerror_error_set( |
2823 | | error, |
2824 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2825 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2826 | | "%s: invalid output data.", |
2827 | | function ); |
2828 | | |
2829 | | return( -1 ); |
2830 | | } |
2831 | | if( ( output_data_size < input_data_size ) |
2832 | | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2833 | | { |
2834 | | libcerror_error_set( |
2835 | | error, |
2836 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2837 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2838 | | "%s: invalid output data size value out of bounds.", |
2839 | | function ); |
2840 | | |
2841 | | return( -1 ); |
2842 | | } |
2843 | | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
2844 | | { |
2845 | | safe_mode = AES_ENCRYPT; |
2846 | | } |
2847 | | else |
2848 | | { |
2849 | | safe_mode = AES_DECRYPT; |
2850 | | } |
2851 | | AES_ecb_encrypt( |
2852 | | (unsigned char *) input_data, |
2853 | | (unsigned char *) output_data, |
2854 | | &( internal_context->key ), |
2855 | | safe_mode ); |
2856 | | |
2857 | | return( result ); |
2858 | | } |
2859 | | |
2860 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && defined( HAVE_EVP_CRYPTO_AES_ECB ) |
2861 | | |
2862 | | /* De- or encrypts a block of data using AES-ECB (Electronic CodeBook) using OpenSSL EVP |
2863 | | * The size must be a multitude of the AES block size (16 byte) |
2864 | | * Returns 1 if successful or -1 on error |
2865 | | */ |
2866 | | int libcaes_crypt_ecb( |
2867 | | libcaes_context_t *context, |
2868 | | int mode, |
2869 | | const uint8_t *input_data, |
2870 | | size_t input_data_size, |
2871 | | uint8_t *output_data, |
2872 | | size_t output_data_size, |
2873 | | libcerror_error_t **error ) |
2874 | | { |
2875 | | uint8_t block_data[ EVP_MAX_BLOCK_LENGTH ]; |
2876 | | char error_string[ 256 ]; |
2877 | | |
2878 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
2879 | | OSSL_PARAM parameters[2]; |
2880 | | |
2881 | | EVP_CIPHER *cipher = NULL; |
2882 | | const char *cipher_string = NULL; |
2883 | | unsigned int padding = 0; |
2884 | | #else |
2885 | | const EVP_CIPHER *cipher = NULL; |
2886 | | #endif |
2887 | | |
2888 | | libcaes_internal_context_t *internal_context = NULL; |
2889 | | static char *function = "libcaes_crypt_ecb"; |
2890 | | unsigned long error_code = 0; |
2891 | | int safe_output_data_size = 0; |
2892 | | |
2893 | | if( context == NULL ) |
2894 | | { |
2895 | | libcerror_error_set( |
2896 | | error, |
2897 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2898 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2899 | | "%s: invalid context.", |
2900 | | function ); |
2901 | | |
2902 | | return( -1 ); |
2903 | | } |
2904 | | internal_context = (libcaes_internal_context_t *) context; |
2905 | | |
2906 | | if( ( internal_context->key_bit_size != 128 ) |
2907 | | && ( internal_context->key_bit_size != 192 ) |
2908 | | && ( internal_context->key_bit_size != 256 ) ) |
2909 | | { |
2910 | | libcerror_error_set( |
2911 | | error, |
2912 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2913 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2914 | | "%s: invalid context - unsupported key bit size.", |
2915 | | function ); |
2916 | | |
2917 | | return( -1 ); |
2918 | | } |
2919 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2920 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2921 | | { |
2922 | | libcerror_error_set( |
2923 | | error, |
2924 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2925 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2926 | | "%s: unsupported mode.", |
2927 | | function ); |
2928 | | |
2929 | | return( -1 ); |
2930 | | } |
2931 | | if( input_data == NULL ) |
2932 | | { |
2933 | | libcerror_error_set( |
2934 | | error, |
2935 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2936 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2937 | | "%s: invalid input data.", |
2938 | | function ); |
2939 | | |
2940 | | return( -1 ); |
2941 | | } |
2942 | | if( ( input_data_size < 16 ) |
2943 | | || ( input_data_size > (size_t) INT_MAX ) ) |
2944 | | { |
2945 | | libcerror_error_set( |
2946 | | error, |
2947 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2948 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2949 | | "%s: invalid input data size value out of bounds.", |
2950 | | function ); |
2951 | | |
2952 | | return( -1 ); |
2953 | | } |
2954 | | if( output_data == NULL ) |
2955 | | { |
2956 | | libcerror_error_set( |
2957 | | error, |
2958 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2959 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2960 | | "%s: invalid output data.", |
2961 | | function ); |
2962 | | |
2963 | | return( -1 ); |
2964 | | } |
2965 | | if( ( output_data_size < input_data_size ) |
2966 | | || ( output_data_size > (size_t) INT_MAX ) ) |
2967 | | { |
2968 | | libcerror_error_set( |
2969 | | error, |
2970 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2971 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2972 | | "%s: invalid output data size value out of bounds.", |
2973 | | function ); |
2974 | | |
2975 | | return( -1 ); |
2976 | | } |
2977 | | if( memory_set( |
2978 | | block_data, |
2979 | | 0, |
2980 | | EVP_MAX_BLOCK_LENGTH ) == NULL ) |
2981 | | { |
2982 | | libcerror_error_set( |
2983 | | error, |
2984 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2985 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2986 | | "%s: unable to clear block data.", |
2987 | | function ); |
2988 | | |
2989 | | goto on_error; |
2990 | | } |
2991 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
2992 | | if( EVP_CIPHER_CTX_reset( |
2993 | | internal_context->evp_cipher_context ) != 1 ) |
2994 | | { |
2995 | | error_code = ERR_get_error(); |
2996 | | |
2997 | | ERR_error_string_n( |
2998 | | error_code, |
2999 | | error_string, |
3000 | | 256 ); |
3001 | | |
3002 | | libcerror_error_set( |
3003 | | error, |
3004 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3005 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
3006 | | "%s: unable to reset cipher context with error: %s.", |
3007 | | function, |
3008 | | error_string ); |
3009 | | |
3010 | | goto on_error; |
3011 | | } |
3012 | | if( internal_context->key_bit_size == 128 ) |
3013 | | { |
3014 | | cipher_string = "AES-128-ECB"; |
3015 | | } |
3016 | | else if( internal_context->key_bit_size == 192 ) |
3017 | | { |
3018 | | cipher_string = "AES-192-ECB"; |
3019 | | } |
3020 | | else if( internal_context->key_bit_size == 256 ) |
3021 | | { |
3022 | | cipher_string = "AES-256-ECB"; |
3023 | | } |
3024 | | cipher = EVP_CIPHER_fetch( |
3025 | | NULL, |
3026 | | cipher_string, |
3027 | | NULL ); |
3028 | | |
3029 | | if( cipher == NULL ) |
3030 | | { |
3031 | | libcerror_error_set( |
3032 | | error, |
3033 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3034 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3035 | | "%s: missing cipher.", |
3036 | | function ); |
3037 | | |
3038 | | goto on_error; |
3039 | | } |
3040 | | parameters[0] = OSSL_PARAM_construct_uint( |
3041 | | OSSL_CIPHER_PARAM_PADDING, |
3042 | | &padding ); |
3043 | | |
3044 | | parameters[1] = OSSL_PARAM_construct_end(); |
3045 | | |
3046 | | if( EVP_CipherInit_ex2( |
3047 | | internal_context->evp_cipher_context, |
3048 | | cipher, |
3049 | | (unsigned char *) internal_context->key, |
3050 | | NULL, |
3051 | | mode, |
3052 | | parameters ) != 1 ) |
3053 | | { |
3054 | | error_code = ERR_get_error(); |
3055 | | |
3056 | | ERR_error_string_n( |
3057 | | error_code, |
3058 | | error_string, |
3059 | | 256 ); |
3060 | | |
3061 | | libcerror_error_set( |
3062 | | error, |
3063 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3064 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
3065 | | "%s: unable to initialize cipher with error: %s.", |
3066 | | function, |
3067 | | error_string ); |
3068 | | |
3069 | | goto on_error; |
3070 | | } |
3071 | | #else |
3072 | | if( internal_context->key_bit_size == 128 ) |
3073 | | { |
3074 | | cipher = EVP_aes_128_ecb(); |
3075 | | } |
3076 | | else if( internal_context->key_bit_size == 192 ) |
3077 | | { |
3078 | | cipher = EVP_aes_192_ecb(); |
3079 | | } |
3080 | | else if( internal_context->key_bit_size == 256 ) |
3081 | | { |
3082 | | cipher = EVP_aes_256_ecb(); |
3083 | | } |
3084 | | if( EVP_CipherInit_ex( |
3085 | | internal_context->evp_cipher_context, |
3086 | | cipher, |
3087 | | NULL, |
3088 | | (unsigned char *) internal_context->key, |
3089 | | NULL, |
3090 | | mode ) != 1 ) |
3091 | | { |
3092 | | error_code = ERR_get_error(); |
3093 | | |
3094 | | ERR_error_string_n( |
3095 | | error_code, |
3096 | | error_string, |
3097 | | 256 ); |
3098 | | |
3099 | | libcerror_error_set( |
3100 | | error, |
3101 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3102 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
3103 | | "%s: unable to initialize cipher with error: %s.", |
3104 | | function, |
3105 | | error_string ); |
3106 | | |
3107 | | goto on_error; |
3108 | | } |
3109 | | if( EVP_CIPHER_CTX_set_padding( |
3110 | | internal_context->evp_cipher_context, |
3111 | | 1 ) != 1 ) |
3112 | | { |
3113 | | error_code = ERR_get_error(); |
3114 | | |
3115 | | ERR_error_string_n( |
3116 | | error_code, |
3117 | | error_string, |
3118 | | 256 ); |
3119 | | |
3120 | | libcerror_error_set( |
3121 | | error, |
3122 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3123 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
3124 | | "%s: unable to set padding in context with error: %s.", |
3125 | | function, |
3126 | | error_string ); |
3127 | | |
3128 | | goto on_error; |
3129 | | } |
3130 | | #endif /* defined( HAVE_EVP_CIPHERINIT_EX2 ) */ |
3131 | | |
3132 | | if( EVP_CipherUpdate( |
3133 | | internal_context->evp_cipher_context, |
3134 | | (unsigned char *) output_data, |
3135 | | &safe_output_data_size, |
3136 | | (unsigned char *) input_data, |
3137 | | 16 ) != 1 ) |
3138 | | { |
3139 | | error_code = ERR_get_error(); |
3140 | | |
3141 | | ERR_error_string_n( |
3142 | | error_code, |
3143 | | error_string, |
3144 | | 256 ); |
3145 | | |
3146 | | libcerror_error_set( |
3147 | | error, |
3148 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3149 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
3150 | | "%s: unable to update cipher with error: %s.", |
3151 | | function, |
3152 | | error_string ); |
3153 | | |
3154 | | goto on_error; |
3155 | | } |
3156 | | /* Just ignore the output of this function |
3157 | | */ |
3158 | | EVP_CipherFinal_ex( |
3159 | | internal_context->evp_cipher_context, |
3160 | | (unsigned char *) block_data, |
3161 | | &safe_output_data_size ); |
3162 | | |
3163 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
3164 | | EVP_CIPHER_free( |
3165 | | cipher ); |
3166 | | #endif |
3167 | | return( 1 ); |
3168 | | |
3169 | | on_error: |
3170 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
3171 | | if( cipher != NULL ) |
3172 | | { |
3173 | | EVP_CIPHER_free( |
3174 | | cipher ); |
3175 | | } |
3176 | | #endif |
3177 | | return( -1 ); |
3178 | | } |
3179 | | |
3180 | | #else |
3181 | | |
3182 | | /* De- or encrypts a block of data using AES-ECB (Electronic CodeBook) using fallback implementation |
3183 | | * The size must be a multitude of the AES block size (16 byte) |
3184 | | * Returns 1 if successful or -1 on error |
3185 | | */ |
3186 | | int libcaes_crypt_ecb( |
3187 | | libcaes_context_t *context, |
3188 | | int mode, |
3189 | | const uint8_t *input_data, |
3190 | | size_t input_data_size, |
3191 | | uint8_t *output_data, |
3192 | | size_t output_data_size, |
3193 | | libcerror_error_t **error ) |
3194 | 172 | { |
3195 | 172 | uint32_t cipher_values_32bit[ 4 ]; |
3196 | 172 | uint32_t values_32bit[ 4 ]; |
3197 | | |
3198 | 172 | libcaes_internal_context_t *internal_context = NULL; |
3199 | 172 | uint32_t *round_keys = NULL; |
3200 | 172 | static char *function = "libcaes_crypt_ecb"; |
3201 | 172 | size_t data_offset = 0; |
3202 | 172 | uint32_t substitution_value = 0; |
3203 | 172 | uint32_t table_value = 0; |
3204 | 172 | int result = 1; |
3205 | 172 | int round_key_iterator = 0; |
3206 | | |
3207 | 172 | if( context == NULL ) |
3208 | 0 | { |
3209 | 0 | libcerror_error_set( |
3210 | 0 | error, |
3211 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3212 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3213 | 0 | "%s: invalid context.", |
3214 | 0 | function ); |
3215 | |
|
3216 | 0 | return( -1 ); |
3217 | 0 | } |
3218 | 172 | internal_context = (libcaes_internal_context_t *) context; |
3219 | | |
3220 | 172 | if( internal_context->round_keys == NULL ) |
3221 | 0 | { |
3222 | 0 | libcerror_error_set( |
3223 | 0 | error, |
3224 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
3225 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
3226 | 0 | "%s: invalid context - missing round keys.", |
3227 | 0 | function ); |
3228 | |
|
3229 | 0 | return( -1 ); |
3230 | 0 | } |
3231 | 172 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
3232 | 172 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
3233 | 0 | { |
3234 | 0 | libcerror_error_set( |
3235 | 0 | error, |
3236 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3237 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
3238 | 0 | "%s: unsupported mode.", |
3239 | 0 | function ); |
3240 | |
|
3241 | 0 | return( -1 ); |
3242 | 0 | } |
3243 | 172 | if( input_data == NULL ) |
3244 | 0 | { |
3245 | 0 | libcerror_error_set( |
3246 | 0 | error, |
3247 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3248 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3249 | 0 | "%s: invalid input data.", |
3250 | 0 | function ); |
3251 | |
|
3252 | 0 | return( -1 ); |
3253 | 0 | } |
3254 | | /* Check if the input data size is a multitude of 16-byte |
3255 | | */ |
3256 | 172 | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
3257 | 167 | || ( input_data_size < 16 ) |
3258 | 167 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
3259 | 5 | { |
3260 | 5 | libcerror_error_set( |
3261 | 5 | error, |
3262 | 5 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3263 | 5 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
3264 | 5 | "%s: invalid input data size value out of bounds.", |
3265 | 5 | function ); |
3266 | | |
3267 | 5 | return( -1 ); |
3268 | 5 | } |
3269 | 167 | if( output_data == NULL ) |
3270 | 0 | { |
3271 | 0 | libcerror_error_set( |
3272 | 0 | error, |
3273 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3274 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
3275 | 0 | "%s: invalid output data.", |
3276 | 0 | function ); |
3277 | |
|
3278 | 0 | return( -1 ); |
3279 | 0 | } |
3280 | 167 | if( ( output_data_size < input_data_size ) |
3281 | 122 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
3282 | 45 | { |
3283 | 45 | libcerror_error_set( |
3284 | 45 | error, |
3285 | 45 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
3286 | 45 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
3287 | 45 | "%s: invalid output data size value out of bounds.", |
3288 | 45 | function ); |
3289 | | |
3290 | 45 | return( -1 ); |
3291 | 45 | } |
3292 | 250 | while( data_offset < input_data_size ) |
3293 | 128 | { |
3294 | 128 | byte_stream_copy_to_uint32_little_endian( |
3295 | 128 | &( input_data[ data_offset ] ), |
3296 | 128 | values_32bit[ 0 ] ); |
3297 | | |
3298 | 128 | byte_stream_copy_to_uint32_little_endian( |
3299 | 128 | &( input_data[ data_offset + 4 ] ), |
3300 | 128 | values_32bit[ 1 ] ); |
3301 | | |
3302 | 128 | byte_stream_copy_to_uint32_little_endian( |
3303 | 128 | &( input_data[ data_offset + 8 ] ), |
3304 | 128 | values_32bit[ 2 ] ); |
3305 | | |
3306 | 128 | byte_stream_copy_to_uint32_little_endian( |
3307 | 128 | &( input_data[ data_offset + 12 ] ), |
3308 | 128 | values_32bit[ 3 ] ); |
3309 | | |
3310 | 128 | round_keys = internal_context->round_keys; |
3311 | | |
3312 | 128 | values_32bit[ 0 ] ^= round_keys[ 0 ]; |
3313 | 128 | values_32bit[ 1 ] ^= round_keys[ 1 ]; |
3314 | 128 | values_32bit[ 2 ] ^= round_keys[ 2 ]; |
3315 | 128 | values_32bit[ 3 ] ^= round_keys[ 3 ]; |
3316 | | |
3317 | 128 | round_keys += 4; |
3318 | | |
3319 | 128 | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
3320 | 128 | { |
3321 | 128 | for( round_key_iterator = ( internal_context->number_of_round_keys / 2 ); |
3322 | 640 | round_key_iterator > 1; |
3323 | 512 | round_key_iterator-- ) |
3324 | 512 | { |
3325 | 512 | libcaes_calculate_forward_table_round( |
3326 | 512 | round_keys, |
3327 | 512 | cipher_values_32bit, |
3328 | 512 | values_32bit, |
3329 | 512 | table_value ); |
3330 | | |
3331 | 512 | round_keys += 4; |
3332 | | |
3333 | 512 | libcaes_calculate_forward_table_round( |
3334 | 512 | round_keys, |
3335 | 512 | values_32bit, |
3336 | 512 | cipher_values_32bit, |
3337 | 512 | table_value ); |
3338 | | |
3339 | 512 | round_keys += 4; |
3340 | 512 | } |
3341 | 128 | libcaes_calculate_forward_table_round( |
3342 | 128 | round_keys, |
3343 | 128 | cipher_values_32bit, |
3344 | 128 | values_32bit, |
3345 | 128 | table_value ); |
3346 | | |
3347 | 128 | round_keys += 4; |
3348 | | |
3349 | 128 | libcaes_calculate_forward_substitution_round( |
3350 | 128 | round_keys, |
3351 | 128 | values_32bit, |
3352 | 128 | cipher_values_32bit, |
3353 | 128 | substitution_value ); |
3354 | 128 | } |
3355 | 0 | else |
3356 | 0 | { |
3357 | 0 | for( round_key_iterator = ( internal_context->number_of_round_keys / 2 ); |
3358 | 0 | round_key_iterator > 1; |
3359 | 0 | round_key_iterator-- ) |
3360 | 0 | { |
3361 | 0 | libcaes_calculate_reverse_table_round( |
3362 | 0 | round_keys, |
3363 | 0 | cipher_values_32bit, |
3364 | 0 | values_32bit, |
3365 | 0 | table_value ); |
3366 | |
|
3367 | 0 | round_keys += 4; |
3368 | |
|
3369 | 0 | libcaes_calculate_reverse_table_round( |
3370 | 0 | round_keys, |
3371 | 0 | values_32bit, |
3372 | 0 | cipher_values_32bit, |
3373 | 0 | table_value ); |
3374 | |
|
3375 | 0 | round_keys += 4; |
3376 | 0 | } |
3377 | 0 | libcaes_calculate_reverse_table_round( |
3378 | 0 | round_keys, |
3379 | 0 | cipher_values_32bit, |
3380 | 0 | values_32bit, |
3381 | 0 | table_value ); |
3382 | |
|
3383 | 0 | round_keys += 4; |
3384 | |
|
3385 | 0 | libcaes_calculate_reverse_substitution_round( |
3386 | 0 | round_keys, |
3387 | 0 | values_32bit, |
3388 | 0 | cipher_values_32bit, |
3389 | 0 | table_value ); |
3390 | 0 | } |
3391 | 128 | byte_stream_copy_from_uint32_little_endian( |
3392 | 128 | &( output_data[ data_offset ] ), |
3393 | 128 | values_32bit[ 0 ] ); |
3394 | | |
3395 | 128 | byte_stream_copy_from_uint32_little_endian( |
3396 | 128 | &( output_data[ data_offset + 4 ] ), |
3397 | 128 | values_32bit[ 1 ] ); |
3398 | | |
3399 | 128 | byte_stream_copy_from_uint32_little_endian( |
3400 | 128 | &( output_data[ data_offset + 8 ] ), |
3401 | 128 | values_32bit[ 2 ] ); |
3402 | | |
3403 | 128 | byte_stream_copy_from_uint32_little_endian( |
3404 | 128 | &( output_data[ data_offset + 12 ] ), |
3405 | 128 | values_32bit[ 3 ] ); |
3406 | | |
3407 | 128 | if( memory_set( |
3408 | 128 | values_32bit, |
3409 | 128 | 0, |
3410 | 128 | sizeof( uint32_t ) * 4 ) == NULL ) |
3411 | 0 | { |
3412 | 0 | libcerror_error_set( |
3413 | 0 | error, |
3414 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
3415 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
3416 | 0 | "%s: unable to clear values 32-bit.", |
3417 | 0 | function ); |
3418 | |
|
3419 | 0 | result = -1; |
3420 | 0 | } |
3421 | 128 | if( memory_set( |
3422 | 128 | cipher_values_32bit, |
3423 | 128 | 0, |
3424 | 128 | sizeof( uint32_t ) * 4 ) == NULL ) |
3425 | 0 | { |
3426 | 0 | libcerror_error_set( |
3427 | 0 | error, |
3428 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
3429 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
3430 | 0 | "%s: unable to clear cipher values 32-bit.", |
3431 | 0 | function ); |
3432 | |
|
3433 | 0 | result = -1; |
3434 | 0 | } |
3435 | 128 | data_offset += 16; |
3436 | 128 | } |
3437 | 122 | return( result ); |
3438 | 167 | } |
3439 | | |
3440 | | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_ECB_ENCRYPT ) */ |
3441 | | |