/src/libqcow/libcaes/libcaes_context.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * AES de/encryption context functions |
3 | | * |
4 | | * Copyright (C) 2011-2024, 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 | 0 | value = libcaes_forward_substitution_box[ index3 ]; \ |
56 | 0 | value <<= 8; \ |
57 | 0 | value |= libcaes_forward_substitution_box[ index2 ]; \ |
58 | 0 | value <<= 8; \ |
59 | 0 | value |= libcaes_forward_substitution_box[ index1 ]; \ |
60 | 0 | value <<= 8; \ |
61 | 0 | value |= libcaes_forward_substitution_box[ index0 ]; |
62 | | |
63 | | #define libcaes_calculate_forward_table_value( value, index0, index1, index2, index3 ) \ |
64 | 0 | value = libcaes_forward_table0[ index0 ]; \ |
65 | 0 | value ^= libcaes_forward_table1[ index1 ]; \ |
66 | 0 | value ^= libcaes_forward_table2[ index2 ]; \ |
67 | 0 | 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 | 0 | libcaes_calculate_forward_substitution_value( \ |
86 | 0 | substitution_value, \ |
87 | 0 | ( cipher_values_32bit[ 0 ] & 0xff ), \ |
88 | 0 | ( ( cipher_values_32bit[ 1 ] >> 8 ) & 0xff ), \ |
89 | 0 | ( ( cipher_values_32bit[ 2 ] >> 16 ) & 0xff ), \ |
90 | 0 | ( ( cipher_values_32bit[ 3 ] >> 24 ) & 0xff ) ); \ |
91 | 0 | \ |
92 | 0 | values_32bit[ 0 ] = round_keys[ 0 ] ^ substitution_value; \ |
93 | 0 | \ |
94 | 0 | libcaes_calculate_forward_substitution_value( \ |
95 | 0 | substitution_value, \ |
96 | 0 | ( cipher_values_32bit[ 1 ] & 0xff ), \ |
97 | 0 | ( ( cipher_values_32bit[ 2 ] >> 8 ) & 0xff ), \ |
98 | 0 | ( ( cipher_values_32bit[ 3 ] >> 16 ) & 0xff ), \ |
99 | 0 | ( ( cipher_values_32bit[ 0 ] >> 24 ) & 0xff ) ); \ |
100 | 0 | \ |
101 | 0 | values_32bit[ 1 ] = round_keys[ 1 ] ^ substitution_value; \ |
102 | 0 | \ |
103 | 0 | libcaes_calculate_forward_substitution_value( \ |
104 | 0 | substitution_value, \ |
105 | 0 | ( cipher_values_32bit[ 2 ] & 0xff ), \ |
106 | 0 | ( ( cipher_values_32bit[ 3 ] >> 8 ) & 0xff ), \ |
107 | 0 | ( ( cipher_values_32bit[ 0 ] >> 16 ) & 0xff ), \ |
108 | 0 | ( ( cipher_values_32bit[ 1 ] >> 24 ) & 0xff ) ); \ |
109 | 0 | \ |
110 | 0 | values_32bit[ 2 ] = round_keys[ 2 ] ^ substitution_value; \ |
111 | 0 | \ |
112 | 0 | libcaes_calculate_forward_substitution_value( \ |
113 | 0 | substitution_value, \ |
114 | 0 | ( cipher_values_32bit[ 3 ] & 0xff ), \ |
115 | 0 | ( ( cipher_values_32bit[ 0 ] >> 8 ) & 0xff ), \ |
116 | 0 | ( ( cipher_values_32bit[ 1 ] >> 16 ) & 0xff ), \ |
117 | 0 | ( ( cipher_values_32bit[ 2 ] >> 24 ) & 0xff ) ); \ |
118 | 0 | \ |
119 | 0 | 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 | 0 | libcaes_calculate_forward_table_value( \ |
123 | 0 | table_value, \ |
124 | 0 | ( cipher_values_32bit[ 0 ] & 0xff ), \ |
125 | 0 | ( ( cipher_values_32bit[ 1 ] >> 8 ) & 0xff ), \ |
126 | 0 | ( ( cipher_values_32bit[ 2 ] >> 16 ) & 0xff ), \ |
127 | 0 | ( ( cipher_values_32bit[ 3 ] >> 24 ) & 0xff ) ); \ |
128 | 0 | \ |
129 | 0 | values_32bit[ 0 ] = round_keys[ 0 ] ^ table_value; \ |
130 | 0 | \ |
131 | 0 | libcaes_calculate_forward_table_value( \ |
132 | 0 | table_value, \ |
133 | 0 | ( cipher_values_32bit[ 1 ] & 0xff ), \ |
134 | 0 | ( ( cipher_values_32bit[ 2 ] >> 8 ) & 0xff ), \ |
135 | 0 | ( ( cipher_values_32bit[ 3 ] >> 16 ) & 0xff ), \ |
136 | 0 | ( ( cipher_values_32bit[ 0 ] >> 24 ) & 0xff ) ); \ |
137 | 0 | \ |
138 | 0 | values_32bit[ 1 ] = round_keys[ 1 ] ^ table_value; \ |
139 | 0 | \ |
140 | 0 | libcaes_calculate_forward_table_value( \ |
141 | 0 | table_value, \ |
142 | 0 | ( cipher_values_32bit[ 2 ] & 0xff ), \ |
143 | 0 | ( ( cipher_values_32bit[ 3 ] >> 8 ) & 0xff ), \ |
144 | 0 | ( ( cipher_values_32bit[ 0 ] >> 16 ) & 0xff ), \ |
145 | 0 | ( ( cipher_values_32bit[ 1 ] >> 24 ) & 0xff ) ); \ |
146 | 0 | \ |
147 | 0 | values_32bit[ 2 ] = round_keys[ 2 ] ^ table_value; \ |
148 | 0 | \ |
149 | 0 | libcaes_calculate_forward_table_value( \ |
150 | 0 | table_value, \ |
151 | 0 | ( cipher_values_32bit[ 3 ] & 0xff ), \ |
152 | 0 | ( ( cipher_values_32bit[ 0 ] >> 8 ) & 0xff ), \ |
153 | 0 | ( ( cipher_values_32bit[ 1 ] >> 16 ) & 0xff ), \ |
154 | 0 | ( ( cipher_values_32bit[ 2 ] >> 24 ) & 0xff ) ); \ |
155 | 0 | \ |
156 | 0 | 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 | 417 | { |
266 | 417 | libcaes_internal_context_t *internal_context = NULL; |
267 | 417 | 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 | 417 | 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 | 417 | 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 | 417 | internal_context = memory_allocate_structure( |
298 | 417 | libcaes_internal_context_t ); |
299 | | |
300 | 417 | 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 | 417 | if( memory_set( |
312 | 417 | internal_context, |
313 | 417 | 0, |
314 | 417 | 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 | 417 | if( libcaes_tables_initialized == 0 ) |
359 | 1 | { |
360 | 1 | if( libcaes_initialize_tables( |
361 | 1 | 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 | 1 | libcaes_tables_initialized = 1; |
373 | 1 | } |
374 | 417 | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) */ |
375 | | |
376 | 417 | *context = (libcaes_context_t *) internal_context; |
377 | | |
378 | 417 | 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 | 417 | } |
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 | 417 | { |
396 | 417 | libcaes_internal_context_t *internal_context = NULL; |
397 | 417 | static char *function = "libcaes_context_free"; |
398 | 417 | 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 | 417 | 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 | 417 | if( *context != NULL ) |
418 | 417 | { |
419 | 417 | internal_context = (libcaes_internal_context_t *) *context; |
420 | 417 | *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 | 417 | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) */ |
462 | | |
463 | 417 | memory_free( |
464 | 417 | internal_context ); |
465 | 417 | } |
466 | 417 | return( result ); |
467 | 417 | } |
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 | 278 | { |
479 | 278 | libcaes_internal_context_t *internal_context = NULL; |
480 | 278 | static char *function = "libcaes_context_set_key"; |
481 | | |
482 | 278 | 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 | 278 | internal_context = (libcaes_internal_context_t *) context; |
494 | | |
495 | 278 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
496 | 278 | && ( 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 | 278 | if( ( key_bit_size != 128 ) |
508 | 278 | && ( key_bit_size != 192 ) |
509 | 278 | && ( key_bit_size != 256 ) ) |
510 | 0 | { |
511 | 0 | libcerror_error_set( |
512 | 0 | error, |
513 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
514 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
515 | 0 | "%s: unsupported key bit size.", |
516 | 0 | function ); |
517 | |
|
518 | 0 | return( -1 ); |
519 | 0 | } |
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 | 278 | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
586 | 139 | { |
587 | 139 | if( libcaes_internal_context_set_encryption_key( |
588 | 139 | internal_context, |
589 | 139 | key, |
590 | 139 | key_bit_size, |
591 | 139 | 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 | 139 | } |
603 | 139 | else |
604 | 139 | { |
605 | 139 | if( libcaes_internal_context_set_decryption_key( |
606 | 139 | internal_context, |
607 | 139 | key, |
608 | 139 | key_bit_size, |
609 | 139 | 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 | 139 | } |
621 | 278 | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && ( defined( HAVE_AES_CBC_ENCRYPT ) || defined( HAVE_AES_ECB_ENCRYPT ) ) */ |
622 | | |
623 | 278 | return( 1 ); |
624 | 278 | } |
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 | 1 | { |
634 | 1 | uint8_t logs_table[ 256 ]; |
635 | 1 | uint8_t powers_table[ 256 ]; |
636 | | |
637 | 1 | static char *function = "libcaes_initialize_tables"; |
638 | 1 | uint16_t byte_index = 0; |
639 | 1 | uint16_t table_index = 0; |
640 | 1 | uint8_t byte_value = 0; |
641 | 1 | uint8_t round_constant_index = 0; |
642 | 1 | uint8_t substitution_value = 0; |
643 | | |
644 | 1 | if( memory_set( |
645 | 1 | logs_table, |
646 | 1 | 0, |
647 | 1 | sizeof( uint8_t ) * 256 ) == NULL ) |
648 | 0 | { |
649 | 0 | libcerror_error_set( |
650 | 0 | error, |
651 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
652 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
653 | 0 | "%s: unable to clear logs table.", |
654 | 0 | function ); |
655 | |
|
656 | 0 | return( -1 ); |
657 | 0 | } |
658 | | /* Fill the powers and logs tables over GF( 2^8 ) |
659 | | */ |
660 | 1 | byte_value = 1; |
661 | | |
662 | 1 | for( byte_index = 0; |
663 | 257 | byte_index < 256; |
664 | 256 | byte_index++ ) |
665 | 256 | { |
666 | 256 | powers_table[ byte_index ] = byte_value; |
667 | 256 | logs_table[ byte_value ] = (uint8_t) byte_index; |
668 | | |
669 | 256 | if( ( byte_value & 0x80 ) == 0 ) |
670 | 128 | { |
671 | 128 | byte_value ^= ( byte_value << 1 ) & 0xff; |
672 | 128 | } |
673 | 128 | else |
674 | 128 | { |
675 | 128 | byte_value ^= ( ( byte_value << 1 ) & 0xff ) ^ 0x1b; |
676 | 128 | } |
677 | 256 | } |
678 | | /* Fill the round constants |
679 | | */ |
680 | 1 | byte_value = 1; |
681 | | |
682 | 1 | for( round_constant_index = 0; |
683 | 11 | round_constant_index < 10; |
684 | 10 | round_constant_index++ ) |
685 | 10 | { |
686 | 10 | libcaes_round_constants[ round_constant_index ] = (uint32_t) byte_value; |
687 | | |
688 | 10 | if( ( byte_value & 0x80 ) == 0 ) |
689 | 9 | { |
690 | 9 | byte_value = ( byte_value << 1 ) & 0xff; |
691 | 9 | } |
692 | 1 | else |
693 | 1 | { |
694 | 1 | byte_value = ( ( byte_value << 1 ) & 0xff ) ^ 0x1b; |
695 | 1 | } |
696 | 10 | } |
697 | | /* Fill the forward and reverse S-boxes |
698 | | */ |
699 | 1 | libcaes_forward_substitution_box[ 0x00 ] = 0x63; |
700 | 1 | libcaes_reverse_substitution_box[ 0x63 ] = 0x00; |
701 | | |
702 | 1 | for( byte_index = 1; |
703 | 256 | byte_index < 256; |
704 | 255 | byte_index++ ) |
705 | 255 | { |
706 | 255 | table_index = 255 - logs_table[ byte_index ]; |
707 | 255 | byte_value = powers_table[ table_index ]; |
708 | | |
709 | 255 | substitution_value = ( ( byte_value << 1 ) & 0xff ) |
710 | 255 | | ( byte_value >> 7 ); |
711 | | |
712 | 255 | byte_value ^= substitution_value; |
713 | | |
714 | 255 | substitution_value = ( ( substitution_value << 1 ) & 0xff ) |
715 | 255 | | ( substitution_value >> 7 ); |
716 | | |
717 | 255 | byte_value ^= substitution_value; |
718 | | |
719 | 255 | substitution_value = ( ( substitution_value << 1 ) & 0xff ) |
720 | 255 | | ( substitution_value >> 7 ); |
721 | | |
722 | 255 | byte_value ^= substitution_value; |
723 | | |
724 | 255 | substitution_value = ( ( substitution_value << 1 ) & 0xff ) |
725 | 255 | | ( substitution_value >> 7 ); |
726 | | |
727 | 255 | substitution_value ^= byte_value ^ 0x63; |
728 | | |
729 | 255 | libcaes_forward_substitution_box[ byte_index ] = substitution_value; |
730 | 255 | libcaes_reverse_substitution_box[ substitution_value ] = (uint8_t) byte_index; |
731 | 255 | } |
732 | | /* Fill the forward and reverse tables |
733 | | */ |
734 | 1 | for( byte_index = 0; |
735 | 257 | byte_index < 256; |
736 | 256 | byte_index++ ) |
737 | 256 | { |
738 | 256 | byte_value = libcaes_forward_substitution_box[ byte_index ]; |
739 | | |
740 | 256 | if( ( byte_value & 0x80 ) == 0 ) |
741 | 128 | { |
742 | 128 | substitution_value = ( byte_value << 1 ) & 0xff; |
743 | 128 | } |
744 | 128 | else |
745 | 128 | { |
746 | 128 | substitution_value = ( ( byte_value << 1 ) & 0xff ) ^ 0x1b; |
747 | 128 | } |
748 | 256 | libcaes_forward_table0[ byte_index ] = byte_value ^ substitution_value; |
749 | 256 | libcaes_forward_table0[ byte_index ] <<= 8; |
750 | 256 | libcaes_forward_table0[ byte_index ] |= byte_value; |
751 | 256 | libcaes_forward_table0[ byte_index ] <<= 8; |
752 | 256 | libcaes_forward_table0[ byte_index ] |= byte_value; |
753 | 256 | libcaes_forward_table0[ byte_index ] <<= 8; |
754 | 256 | libcaes_forward_table0[ byte_index ] |= substitution_value; |
755 | | |
756 | 256 | libcaes_forward_table1[ byte_index ] = byte_stream_bit_rotate_left( |
757 | 256 | libcaes_forward_table0[ byte_index ], |
758 | 256 | 8 ); |
759 | | |
760 | 256 | libcaes_forward_table2[ byte_index ] = byte_stream_bit_rotate_left( |
761 | 256 | libcaes_forward_table1[ byte_index ], |
762 | 256 | 8 ); |
763 | | |
764 | 256 | libcaes_forward_table3[ byte_index ] = byte_stream_bit_rotate_left( |
765 | 256 | libcaes_forward_table2[ byte_index ], |
766 | 256 | 8 ); |
767 | | |
768 | 256 | substitution_value = libcaes_reverse_substitution_box[ byte_index ]; |
769 | | |
770 | 256 | libcaes_reverse_table0[ byte_index ] = 0; |
771 | | |
772 | 256 | if( substitution_value != 0 ) |
773 | 255 | { |
774 | 255 | table_index = logs_table[ 0x0b ]; |
775 | 255 | table_index += logs_table[ substitution_value ]; |
776 | 255 | table_index %= 255; |
777 | | |
778 | 255 | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
779 | 255 | libcaes_reverse_table0[ byte_index ] <<= 8; |
780 | | |
781 | 255 | table_index = logs_table[ 0x0d ]; |
782 | 255 | table_index += logs_table[ substitution_value ]; |
783 | 255 | table_index %= 255; |
784 | | |
785 | 255 | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
786 | 255 | libcaes_reverse_table0[ byte_index ] <<= 8; |
787 | | |
788 | 255 | table_index = logs_table[ 0x09 ]; |
789 | 255 | table_index += logs_table[ substitution_value ]; |
790 | 255 | table_index %= 255; |
791 | | |
792 | 255 | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
793 | 255 | libcaes_reverse_table0[ byte_index ] <<= 8; |
794 | | |
795 | 255 | table_index = logs_table[ 0x0e ]; |
796 | 255 | table_index += logs_table[ substitution_value ]; |
797 | 255 | table_index %= 255; |
798 | | |
799 | 255 | libcaes_reverse_table0[ byte_index ] ^= powers_table[ table_index ]; |
800 | 255 | } |
801 | 256 | libcaes_reverse_table1[ byte_index ] = byte_stream_bit_rotate_left( |
802 | 256 | libcaes_reverse_table0[ byte_index ], |
803 | 256 | 8 ); |
804 | | |
805 | 256 | libcaes_reverse_table2[ byte_index ] = byte_stream_bit_rotate_left( |
806 | 256 | libcaes_reverse_table1[ byte_index ], |
807 | 256 | 8 ); |
808 | | |
809 | 256 | libcaes_reverse_table3[ byte_index ] = byte_stream_bit_rotate_left( |
810 | 256 | libcaes_reverse_table2[ byte_index ], |
811 | 256 | 8 ); |
812 | 256 | } |
813 | 1 | return( 1 ); |
814 | 1 | } |
815 | | |
816 | | /* Sets the AES decryption key |
817 | | * Returns 1 if successful or -1 on error |
818 | | */ |
819 | | int libcaes_internal_context_set_decryption_key( |
820 | | libcaes_internal_context_t *internal_context, |
821 | | const uint8_t *key, |
822 | | size_t key_bit_size, |
823 | | libcerror_error_t **error ) |
824 | 139 | { |
825 | 139 | libcaes_internal_context_t *encryption_context = NULL; |
826 | 139 | static char *function = "libcaes_internal_context_set_decryption_key"; |
827 | 139 | uint32_t *encryption_round_keys = NULL; |
828 | 139 | uint32_t *round_keys = NULL; |
829 | 139 | size_t round_keys_byte_offset = 0; |
830 | 139 | uint8_t byte_value0 = 0; |
831 | 139 | uint8_t byte_value1 = 0; |
832 | 139 | uint8_t byte_value2 = 0; |
833 | 139 | uint8_t byte_value3 = 0; |
834 | 139 | int round_key_iterator = 0; |
835 | | |
836 | 139 | if( internal_context == NULL ) |
837 | 0 | { |
838 | 0 | libcerror_error_set( |
839 | 0 | error, |
840 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
841 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
842 | 0 | "%s: invalid context.", |
843 | 0 | function ); |
844 | |
|
845 | 0 | return( -1 ); |
846 | 0 | } |
847 | 139 | if( key == NULL ) |
848 | 0 | { |
849 | 0 | libcerror_error_set( |
850 | 0 | error, |
851 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
852 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
853 | 0 | "%s: invalid key.", |
854 | 0 | function ); |
855 | |
|
856 | 0 | return( -1 ); |
857 | 0 | } |
858 | 139 | if( ( key_bit_size != 128 ) |
859 | 139 | && ( key_bit_size != 192 ) |
860 | 139 | && ( key_bit_size != 256 ) ) |
861 | 0 | { |
862 | 0 | libcerror_error_set( |
863 | 0 | error, |
864 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
865 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
866 | 0 | "%s: unsupported key bit size.", |
867 | 0 | function ); |
868 | |
|
869 | 0 | return( -1 ); |
870 | 0 | } |
871 | 139 | if( key_bit_size == 128 ) |
872 | 139 | { |
873 | 139 | internal_context->number_of_round_keys = 10; |
874 | 139 | } |
875 | 0 | else if( key_bit_size == 192 ) |
876 | 0 | { |
877 | 0 | internal_context->number_of_round_keys = 12; |
878 | 0 | } |
879 | 0 | else if( key_bit_size == 256 ) |
880 | 0 | { |
881 | 0 | internal_context->number_of_round_keys = 14; |
882 | 0 | } |
883 | | /* Align the buffer to next 16-byte blocks |
884 | | */ |
885 | 139 | internal_context->round_keys = (uint32_t *) ( 16 + ( (intptr_t) internal_context->round_keys_data & ~( 15 ) ) ); |
886 | | |
887 | 139 | round_keys = internal_context->round_keys; |
888 | | |
889 | 139 | if( libcaes_context_initialize( |
890 | 139 | (libcaes_context_t **) &encryption_context, |
891 | 139 | error ) != 1 ) |
892 | 0 | { |
893 | 0 | libcerror_error_set( |
894 | 0 | error, |
895 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
896 | 0 | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
897 | 0 | "%s: unable to create encryption context.", |
898 | 0 | function ); |
899 | |
|
900 | 0 | goto on_error; |
901 | 0 | } |
902 | 139 | if( libcaes_internal_context_set_encryption_key( |
903 | 139 | encryption_context, |
904 | 139 | key, |
905 | 139 | key_bit_size, |
906 | 139 | error ) != 1 ) |
907 | 0 | { |
908 | 0 | libcerror_error_set( |
909 | 0 | error, |
910 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
911 | 0 | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
912 | 0 | "%s: unable to set encryption key.", |
913 | 0 | function ); |
914 | |
|
915 | 0 | goto on_error; |
916 | 0 | } |
917 | | /* Point to the end of the round keys |
918 | | */ |
919 | 139 | round_keys_byte_offset = encryption_context->number_of_round_keys * sizeof( uint32_t ); |
920 | | |
921 | 139 | encryption_round_keys = &( encryption_context->round_keys[ round_keys_byte_offset ] ); |
922 | | |
923 | 139 | round_keys[ 0 ] = encryption_round_keys[ 0 ]; |
924 | 139 | round_keys[ 1 ] = encryption_round_keys[ 1 ]; |
925 | 139 | round_keys[ 2 ] = encryption_round_keys[ 2 ]; |
926 | 139 | round_keys[ 3 ] = encryption_round_keys[ 3 ]; |
927 | | |
928 | 139 | round_keys += 4; |
929 | 139 | encryption_round_keys -= 4; |
930 | | |
931 | 139 | for( round_key_iterator = internal_context->number_of_round_keys; |
932 | 1.39k | round_key_iterator > 1; |
933 | 1.25k | round_key_iterator-- ) |
934 | 1.25k | { |
935 | 1.25k | byte_value0 = ( encryption_round_keys[ 0 ] & 0xff ); |
936 | 1.25k | byte_value1 = ( ( encryption_round_keys[ 0 ] >> 8 ) & 0xff ); |
937 | 1.25k | byte_value2 = ( ( encryption_round_keys[ 0 ] >> 16 ) & 0xff ); |
938 | 1.25k | byte_value3 = ( ( encryption_round_keys[ 0 ] >> 24 ) & 0xff ); |
939 | | |
940 | 1.25k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
941 | 1.25k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
942 | 1.25k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
943 | 1.25k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
944 | | |
945 | 1.25k | round_keys[ 0 ] = libcaes_reverse_table0[ byte_value0 ] |
946 | 1.25k | ^ libcaes_reverse_table1[ byte_value1 ] |
947 | 1.25k | ^ libcaes_reverse_table2[ byte_value2 ] |
948 | 1.25k | ^ libcaes_reverse_table3[ byte_value3 ]; |
949 | | |
950 | 1.25k | byte_value0 = ( encryption_round_keys[ 1 ] & 0xff ); |
951 | 1.25k | byte_value1 = ( ( encryption_round_keys[ 1 ] >> 8 ) & 0xff ); |
952 | 1.25k | byte_value2 = ( ( encryption_round_keys[ 1 ] >> 16 ) & 0xff ); |
953 | 1.25k | byte_value3 = ( ( encryption_round_keys[ 1 ] >> 24 ) & 0xff ); |
954 | | |
955 | 1.25k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
956 | 1.25k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
957 | 1.25k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
958 | 1.25k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
959 | | |
960 | 1.25k | round_keys[ 1 ] = libcaes_reverse_table0[ byte_value0 ] |
961 | 1.25k | ^ libcaes_reverse_table1[ byte_value1 ] |
962 | 1.25k | ^ libcaes_reverse_table2[ byte_value2 ] |
963 | 1.25k | ^ libcaes_reverse_table3[ byte_value3 ]; |
964 | | |
965 | 1.25k | byte_value0 = ( encryption_round_keys[ 2 ] & 0xff ); |
966 | 1.25k | byte_value1 = ( ( encryption_round_keys[ 2 ] >> 8 ) & 0xff ); |
967 | 1.25k | byte_value2 = ( ( encryption_round_keys[ 2 ] >> 16 ) & 0xff ); |
968 | 1.25k | byte_value3 = ( ( encryption_round_keys[ 2 ] >> 24 ) & 0xff ); |
969 | | |
970 | 1.25k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
971 | 1.25k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
972 | 1.25k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
973 | 1.25k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
974 | | |
975 | 1.25k | round_keys[ 2 ] = libcaes_reverse_table0[ byte_value0 ] |
976 | 1.25k | ^ libcaes_reverse_table1[ byte_value1 ] |
977 | 1.25k | ^ libcaes_reverse_table2[ byte_value2 ] |
978 | 1.25k | ^ libcaes_reverse_table3[ byte_value3 ]; |
979 | | |
980 | 1.25k | byte_value0 = ( encryption_round_keys[ 3 ] & 0xff ); |
981 | 1.25k | byte_value1 = ( ( encryption_round_keys[ 3 ] >> 8 ) & 0xff ); |
982 | 1.25k | byte_value2 = ( ( encryption_round_keys[ 3 ] >> 16 ) & 0xff ); |
983 | 1.25k | byte_value3 = ( ( encryption_round_keys[ 3 ] >> 24 ) & 0xff ); |
984 | | |
985 | 1.25k | byte_value0 = libcaes_forward_substitution_box[ byte_value0 ]; |
986 | 1.25k | byte_value1 = libcaes_forward_substitution_box[ byte_value1 ]; |
987 | 1.25k | byte_value2 = libcaes_forward_substitution_box[ byte_value2 ]; |
988 | 1.25k | byte_value3 = libcaes_forward_substitution_box[ byte_value3 ]; |
989 | | |
990 | 1.25k | round_keys[ 3 ] = libcaes_reverse_table0[ byte_value0 ] |
991 | 1.25k | ^ libcaes_reverse_table1[ byte_value1 ] |
992 | 1.25k | ^ libcaes_reverse_table2[ byte_value2 ] |
993 | 1.25k | ^ libcaes_reverse_table3[ byte_value3 ]; |
994 | | |
995 | 1.25k | round_keys += 4; |
996 | 1.25k | encryption_round_keys -= 4; |
997 | 1.25k | } |
998 | 139 | round_keys[ 0 ] = encryption_round_keys[ 0 ]; |
999 | 139 | round_keys[ 1 ] = encryption_round_keys[ 1 ]; |
1000 | 139 | round_keys[ 2 ] = encryption_round_keys[ 2 ]; |
1001 | 139 | round_keys[ 3 ] = encryption_round_keys[ 3 ]; |
1002 | | |
1003 | 139 | if( libcaes_context_free( |
1004 | 139 | (libcaes_context_t **) &encryption_context, |
1005 | 139 | error ) != 1 ) |
1006 | 0 | { |
1007 | 0 | libcerror_error_set( |
1008 | 0 | error, |
1009 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1010 | 0 | LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED, |
1011 | 0 | "%s: unable to free encryption context.", |
1012 | 0 | function ); |
1013 | |
|
1014 | 0 | goto on_error; |
1015 | 0 | } |
1016 | 139 | return( 1 ); |
1017 | | |
1018 | 0 | on_error: |
1019 | 0 | if( encryption_context != NULL ) |
1020 | 0 | { |
1021 | 0 | libcaes_context_free( |
1022 | 0 | (libcaes_context_t **) &encryption_context, |
1023 | 0 | NULL ); |
1024 | 0 | } |
1025 | 0 | return( -1 ); |
1026 | 139 | } |
1027 | | |
1028 | | /* Sets the AES encryption key |
1029 | | * Returns 1 if successful or -1 on error |
1030 | | */ |
1031 | | int libcaes_internal_context_set_encryption_key( |
1032 | | libcaes_internal_context_t *internal_context, |
1033 | | const uint8_t *key, |
1034 | | size_t key_bit_size, |
1035 | | libcerror_error_t **error ) |
1036 | 278 | { |
1037 | 278 | static char *function = "libcaes_internal_context_set_encryption_key"; |
1038 | 278 | uint32_t *round_keys = NULL; |
1039 | 278 | size_t key_index = 0; |
1040 | 278 | int round_constant_index = 0; |
1041 | | |
1042 | 278 | if( internal_context == NULL ) |
1043 | 0 | { |
1044 | 0 | libcerror_error_set( |
1045 | 0 | error, |
1046 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1047 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1048 | 0 | "%s: invalid context.", |
1049 | 0 | function ); |
1050 | |
|
1051 | 0 | return( -1 ); |
1052 | 0 | } |
1053 | 278 | if( key == NULL ) |
1054 | 0 | { |
1055 | 0 | libcerror_error_set( |
1056 | 0 | error, |
1057 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1058 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1059 | 0 | "%s: invalid key.", |
1060 | 0 | function ); |
1061 | |
|
1062 | 0 | return( -1 ); |
1063 | 0 | } |
1064 | 278 | if( ( key_bit_size != 128 ) |
1065 | 278 | && ( key_bit_size != 192 ) |
1066 | 278 | && ( key_bit_size != 256 ) ) |
1067 | 0 | { |
1068 | 0 | libcerror_error_set( |
1069 | 0 | error, |
1070 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1071 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1072 | 0 | "%s: unsupported key bit size.", |
1073 | 0 | function ); |
1074 | |
|
1075 | 0 | return( -1 ); |
1076 | 0 | } |
1077 | | /* Align the buffer to next 16-byte blocks |
1078 | | */ |
1079 | 278 | internal_context->round_keys = (uint32_t *) ( 16 + ( (intptr_t) internal_context->round_keys_data & ~( 15 ) ) ); |
1080 | | |
1081 | 278 | round_keys = internal_context->round_keys; |
1082 | | |
1083 | 278 | for( key_index = 0; |
1084 | 1.39k | key_index < key_bit_size / 8; |
1085 | 1.11k | key_index += 4 ) |
1086 | 1.11k | { |
1087 | 1.11k | byte_stream_copy_to_uint32_little_endian( |
1088 | 1.11k | &( key[ key_index ] ), |
1089 | 1.11k | round_keys[ round_constant_index ] ); |
1090 | | |
1091 | 1.11k | round_constant_index++; |
1092 | 1.11k | } |
1093 | 278 | if( key_bit_size == 128 ) |
1094 | 278 | { |
1095 | 278 | internal_context->number_of_round_keys = 10; |
1096 | | |
1097 | 278 | for( round_constant_index = 0; |
1098 | 3.05k | round_constant_index < 10; |
1099 | 2.78k | round_constant_index++ ) |
1100 | 2.78k | { |
1101 | 2.78k | round_keys[ 4 ] = libcaes_round_constants[ round_constant_index ]; |
1102 | 2.78k | round_keys[ 4 ] ^= round_keys[ 0 ]; |
1103 | 2.78k | round_keys[ 4 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] >> 8 ) & 0xff ]; |
1104 | 2.78k | round_keys[ 4 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] >> 16 ) & 0xff ] ) << 8; |
1105 | 2.78k | round_keys[ 4 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] >> 24 ) & 0xff ] ) << 16; |
1106 | 2.78k | round_keys[ 4 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 3 ] ) & 0xff ] ) << 24; |
1107 | | |
1108 | 2.78k | round_keys[ 5 ] = round_keys[ 1 ] ^ round_keys[ 4 ]; |
1109 | 2.78k | round_keys[ 6 ] = round_keys[ 2 ] ^ round_keys[ 5 ]; |
1110 | 2.78k | round_keys[ 7 ] = round_keys[ 3 ] ^ round_keys[ 6 ]; |
1111 | | |
1112 | 2.78k | round_keys += 4; |
1113 | 2.78k | } |
1114 | 278 | } |
1115 | 0 | else if( key_bit_size == 192 ) |
1116 | 0 | { |
1117 | 0 | internal_context->number_of_round_keys = 12; |
1118 | |
|
1119 | 0 | for( round_constant_index = 0; |
1120 | 0 | round_constant_index < 8; |
1121 | 0 | round_constant_index++ ) |
1122 | 0 | { |
1123 | 0 | round_keys[ 6 ] = libcaes_round_constants[ round_constant_index ]; |
1124 | 0 | round_keys[ 6 ] ^= round_keys[ 0 ]; |
1125 | 0 | round_keys[ 6 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] >> 8 ) & 0xff ]; |
1126 | 0 | round_keys[ 6 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] >> 16 ) & 0xff ] ) << 8; |
1127 | 0 | round_keys[ 6 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] >> 24 ) & 0xff ] ) << 16; |
1128 | 0 | round_keys[ 6 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 5 ] ) & 0xff ] ) << 24; |
1129 | |
|
1130 | 0 | round_keys[ 7 ] = round_keys[ 1 ] ^ round_keys[ 6 ]; |
1131 | 0 | round_keys[ 8 ] = round_keys[ 2 ] ^ round_keys[ 7 ]; |
1132 | 0 | round_keys[ 9 ] = round_keys[ 3 ] ^ round_keys[ 8 ]; |
1133 | 0 | round_keys[ 10 ] = round_keys[ 4 ] ^ round_keys[ 9 ]; |
1134 | 0 | round_keys[ 11 ] = round_keys[ 5 ] ^ round_keys[ 10 ]; |
1135 | |
|
1136 | 0 | round_keys += 6; |
1137 | 0 | } |
1138 | 0 | } |
1139 | 0 | else if( key_bit_size == 256 ) |
1140 | 0 | { |
1141 | 0 | internal_context->number_of_round_keys = 14; |
1142 | |
|
1143 | 0 | for( round_constant_index = 0; |
1144 | 0 | round_constant_index < 7; |
1145 | 0 | round_constant_index++ ) |
1146 | 0 | { |
1147 | 0 | round_keys[ 8 ] = libcaes_round_constants[ round_constant_index ]; |
1148 | 0 | round_keys[ 8 ] ^= round_keys[ 0 ]; |
1149 | 0 | round_keys[ 8 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] >> 8 ) & 0xff ]; |
1150 | 0 | round_keys[ 8 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] >> 16 ) & 0xff ] ) << 8; |
1151 | 0 | round_keys[ 8 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] >> 24 ) & 0xff ] ) << 16; |
1152 | 0 | round_keys[ 8 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 7 ] ) & 0xff ] ) << 24; |
1153 | |
|
1154 | 0 | round_keys[ 9 ] = round_keys[ 1 ] ^ round_keys[ 8 ]; |
1155 | 0 | round_keys[ 10 ] = round_keys[ 2 ] ^ round_keys[ 9 ]; |
1156 | 0 | round_keys[ 11 ] = round_keys[ 3 ] ^ round_keys[ 10 ]; |
1157 | |
|
1158 | 0 | round_keys[ 12 ] = round_keys[ 4 ]; |
1159 | 0 | round_keys[ 12 ] ^= (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] ) & 0xff ]; |
1160 | 0 | round_keys[ 12 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] >> 8 ) & 0xff ] ) << 8; |
1161 | 0 | round_keys[ 12 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] >> 16 ) & 0xff ] ) << 16; |
1162 | 0 | round_keys[ 12 ] ^= ( (uint32_t) libcaes_forward_substitution_box[ ( round_keys[ 11 ] >> 24 ) & 0xff ] ) << 24; |
1163 | |
|
1164 | 0 | round_keys[ 13 ] = round_keys[ 5 ] ^ round_keys[ 12 ]; |
1165 | 0 | round_keys[ 14 ] = round_keys[ 6 ] ^ round_keys[ 13 ]; |
1166 | 0 | round_keys[ 15 ] = round_keys[ 7 ] ^ round_keys[ 14 ]; |
1167 | |
|
1168 | 0 | round_keys += 8; |
1169 | 0 | } |
1170 | 0 | } |
1171 | 278 | return( 1 ); |
1172 | 278 | } |
1173 | | |
1174 | | #endif /* !defined( LIBCAES_HAVE_AES_SUPPORT ) */ |
1175 | | |
1176 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_CBC_ENCRYPT ) |
1177 | | |
1178 | | /* De- or encrypts a block of data using AES-CBC (Cipher Block Chaining) using OpenSSL |
1179 | | * The size must be a multitude of the AES block size (16 byte) |
1180 | | * Returns 1 if successful or -1 on error |
1181 | | */ |
1182 | | int libcaes_crypt_cbc( |
1183 | | libcaes_context_t *context, |
1184 | | int mode, |
1185 | | const uint8_t *initialization_vector, |
1186 | | size_t initialization_vector_size, |
1187 | | const uint8_t *input_data, |
1188 | | size_t input_data_size, |
1189 | | uint8_t *output_data, |
1190 | | size_t output_data_size, |
1191 | | libcerror_error_t **error ) |
1192 | | { |
1193 | | uint8_t safe_initialization_vector[ 16 ]; |
1194 | | |
1195 | | libcaes_internal_context_t *internal_context = NULL; |
1196 | | static char *function = "libcaes_crypt_cbc"; |
1197 | | int safe_mode = 0; |
1198 | | |
1199 | | if( context == NULL ) |
1200 | | { |
1201 | | libcerror_error_set( |
1202 | | error, |
1203 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1204 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1205 | | "%s: invalid context.", |
1206 | | function ); |
1207 | | |
1208 | | return( -1 ); |
1209 | | } |
1210 | | internal_context = (libcaes_internal_context_t *) context; |
1211 | | |
1212 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
1213 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
1214 | | { |
1215 | | libcerror_error_set( |
1216 | | error, |
1217 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1218 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1219 | | "%s: unsupported mode.", |
1220 | | function ); |
1221 | | |
1222 | | return( -1 ); |
1223 | | } |
1224 | | if( initialization_vector == NULL ) |
1225 | | { |
1226 | | libcerror_error_set( |
1227 | | error, |
1228 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1229 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1230 | | "%s: invalid initialization vector.", |
1231 | | function ); |
1232 | | |
1233 | | return( -1 ); |
1234 | | } |
1235 | | if( initialization_vector_size != 16 ) |
1236 | | { |
1237 | | libcerror_error_set( |
1238 | | error, |
1239 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1240 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1241 | | "%s: invalid initialization vector size value out of bounds.", |
1242 | | function ); |
1243 | | |
1244 | | return( -1 ); |
1245 | | } |
1246 | | if( input_data == NULL ) |
1247 | | { |
1248 | | libcerror_error_set( |
1249 | | error, |
1250 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1251 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1252 | | "%s: invalid input data.", |
1253 | | function ); |
1254 | | |
1255 | | return( -1 ); |
1256 | | } |
1257 | | /* Check if the input data size is a multitude of 16-byte |
1258 | | */ |
1259 | | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
1260 | | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
1261 | | { |
1262 | | libcerror_error_set( |
1263 | | error, |
1264 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1265 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1266 | | "%s: invalid input data size value out of bounds.", |
1267 | | function ); |
1268 | | |
1269 | | return( -1 ); |
1270 | | } |
1271 | | if( output_data == NULL ) |
1272 | | { |
1273 | | libcerror_error_set( |
1274 | | error, |
1275 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1276 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1277 | | "%s: invalid output data.", |
1278 | | function ); |
1279 | | |
1280 | | return( -1 ); |
1281 | | } |
1282 | | if( ( output_data_size < input_data_size ) |
1283 | | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
1284 | | { |
1285 | | libcerror_error_set( |
1286 | | error, |
1287 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1288 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1289 | | "%s: invalid output data size value out of bounds.", |
1290 | | function ); |
1291 | | |
1292 | | return( -1 ); |
1293 | | } |
1294 | | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
1295 | | { |
1296 | | safe_mode = AES_ENCRYPT; |
1297 | | } |
1298 | | else |
1299 | | { |
1300 | | safe_mode = AES_DECRYPT; |
1301 | | } |
1302 | | /* AES_cbc_encrypt overwrites the data in the initialization vector |
1303 | | */ |
1304 | | if( memory_copy( |
1305 | | safe_initialization_vector, |
1306 | | initialization_vector, |
1307 | | 16 ) == NULL ) |
1308 | | { |
1309 | | libcerror_error_set( |
1310 | | error, |
1311 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1312 | | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1313 | | "%s: unable to copy initialization vector.", |
1314 | | function ); |
1315 | | |
1316 | | return( -1 ); |
1317 | | } |
1318 | | AES_cbc_encrypt( |
1319 | | (unsigned char *) input_data, |
1320 | | (unsigned char *) output_data, |
1321 | | input_data_size, |
1322 | | &( internal_context->key ), |
1323 | | (unsigned char *) safe_initialization_vector, |
1324 | | safe_mode ); |
1325 | | |
1326 | | if( memory_set( |
1327 | | safe_initialization_vector, |
1328 | | 0, |
1329 | | 16 ) == NULL ) |
1330 | | { |
1331 | | libcerror_error_set( |
1332 | | error, |
1333 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1334 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1335 | | "%s: unable to clear initialization vector.", |
1336 | | function ); |
1337 | | |
1338 | | return( -1 ); |
1339 | | } |
1340 | | return( 1 ); |
1341 | | } |
1342 | | |
1343 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && defined( HAVE_EVP_CRYPTO_AES_CBC ) |
1344 | | |
1345 | | /* De- or encrypts a block of data using AES-CBC (Cipher Block Chaining) using OpenSSL EVP |
1346 | | * The size must be a multitude of the AES block size (16 byte) |
1347 | | * Returns 1 if successful or -1 on error |
1348 | | */ |
1349 | | int libcaes_crypt_cbc( |
1350 | | libcaes_context_t *context, |
1351 | | int mode, |
1352 | | const uint8_t *initialization_vector, |
1353 | | size_t initialization_vector_size, |
1354 | | const uint8_t *input_data, |
1355 | | size_t input_data_size, |
1356 | | uint8_t *output_data, |
1357 | | size_t output_data_size, |
1358 | | libcerror_error_t **error ) |
1359 | | { |
1360 | | uint8_t block_data[ EVP_MAX_BLOCK_LENGTH ]; |
1361 | | char error_string[ 256 ]; |
1362 | | |
1363 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1364 | | OSSL_PARAM parameters[2]; |
1365 | | |
1366 | | EVP_CIPHER *cipher = NULL; |
1367 | | const char *cipher_string = NULL; |
1368 | | unsigned int padding = 0; |
1369 | | #else |
1370 | | const EVP_CIPHER *cipher = NULL; |
1371 | | #endif |
1372 | | |
1373 | | libcaes_internal_context_t *internal_context = NULL; |
1374 | | static char *function = "libcaes_crypt_cbc"; |
1375 | | unsigned long error_code = 0; |
1376 | | int safe_output_data_size = 0; |
1377 | | |
1378 | | if( context == NULL ) |
1379 | | { |
1380 | | libcerror_error_set( |
1381 | | error, |
1382 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1383 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1384 | | "%s: invalid context.", |
1385 | | function ); |
1386 | | |
1387 | | return( -1 ); |
1388 | | } |
1389 | | internal_context = (libcaes_internal_context_t *) context; |
1390 | | |
1391 | | if( ( internal_context->key_bit_size != 128 ) |
1392 | | && ( internal_context->key_bit_size != 192 ) |
1393 | | && ( internal_context->key_bit_size != 256 ) ) |
1394 | | { |
1395 | | libcerror_error_set( |
1396 | | error, |
1397 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1398 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1399 | | "%s: invalid context - unsupported key bit size.", |
1400 | | function ); |
1401 | | |
1402 | | return( -1 ); |
1403 | | } |
1404 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
1405 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
1406 | | { |
1407 | | libcerror_error_set( |
1408 | | error, |
1409 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1410 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1411 | | "%s: unsupported mode.", |
1412 | | function ); |
1413 | | |
1414 | | return( -1 ); |
1415 | | } |
1416 | | if( initialization_vector == NULL ) |
1417 | | { |
1418 | | libcerror_error_set( |
1419 | | error, |
1420 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1421 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1422 | | "%s: invalid initialization vector.", |
1423 | | function ); |
1424 | | |
1425 | | return( -1 ); |
1426 | | } |
1427 | | if( initialization_vector_size != 16 ) |
1428 | | { |
1429 | | libcerror_error_set( |
1430 | | error, |
1431 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1432 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1433 | | "%s: invalid initialization vector size value out of bounds.", |
1434 | | function ); |
1435 | | |
1436 | | return( -1 ); |
1437 | | } |
1438 | | if( input_data == NULL ) |
1439 | | { |
1440 | | libcerror_error_set( |
1441 | | error, |
1442 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1443 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1444 | | "%s: invalid input data.", |
1445 | | function ); |
1446 | | |
1447 | | return( -1 ); |
1448 | | } |
1449 | | /* Check if the input data size is a multitude of 16-byte |
1450 | | */ |
1451 | | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
1452 | | || ( input_data_size > (size_t) INT_MAX ) ) |
1453 | | { |
1454 | | libcerror_error_set( |
1455 | | error, |
1456 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1457 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1458 | | "%s: invalid input data size value out of bounds.", |
1459 | | function ); |
1460 | | |
1461 | | return( -1 ); |
1462 | | } |
1463 | | if( output_data == NULL ) |
1464 | | { |
1465 | | libcerror_error_set( |
1466 | | error, |
1467 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1468 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1469 | | "%s: invalid output data.", |
1470 | | function ); |
1471 | | |
1472 | | return( -1 ); |
1473 | | } |
1474 | | if( ( output_data_size < input_data_size ) |
1475 | | || ( output_data_size > (size_t) INT_MAX ) ) |
1476 | | { |
1477 | | libcerror_error_set( |
1478 | | error, |
1479 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1480 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1481 | | "%s: invalid output data size value out of bounds.", |
1482 | | function ); |
1483 | | |
1484 | | return( -1 ); |
1485 | | } |
1486 | | if( memory_set( |
1487 | | block_data, |
1488 | | 0, |
1489 | | EVP_MAX_BLOCK_LENGTH ) == NULL ) |
1490 | | { |
1491 | | libcerror_error_set( |
1492 | | error, |
1493 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1494 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1495 | | "%s: unable to clear input block data.", |
1496 | | function ); |
1497 | | |
1498 | | goto on_error; |
1499 | | } |
1500 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1501 | | if( EVP_CIPHER_CTX_reset( |
1502 | | internal_context->evp_cipher_context ) != 1 ) |
1503 | | { |
1504 | | error_code = ERR_get_error(); |
1505 | | |
1506 | | ERR_error_string_n( |
1507 | | error_code, |
1508 | | error_string, |
1509 | | 256 ); |
1510 | | |
1511 | | libcerror_error_set( |
1512 | | error, |
1513 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1514 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
1515 | | "%s: unable to reset cipher context with error: %s.", |
1516 | | function, |
1517 | | error_string ); |
1518 | | |
1519 | | goto on_error; |
1520 | | } |
1521 | | if( internal_context->key_bit_size == 128 ) |
1522 | | { |
1523 | | cipher_string = "AES-128-CBC"; |
1524 | | } |
1525 | | else if( internal_context->key_bit_size == 192 ) |
1526 | | { |
1527 | | cipher_string = "AES-192-CBC"; |
1528 | | } |
1529 | | else if( internal_context->key_bit_size == 256 ) |
1530 | | { |
1531 | | cipher_string = "AES-256-CBC"; |
1532 | | } |
1533 | | cipher = EVP_CIPHER_fetch( |
1534 | | NULL, |
1535 | | cipher_string, |
1536 | | NULL ); |
1537 | | |
1538 | | if( cipher == NULL ) |
1539 | | { |
1540 | | libcerror_error_set( |
1541 | | error, |
1542 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1543 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
1544 | | "%s: missing cipher.", |
1545 | | function ); |
1546 | | |
1547 | | goto on_error; |
1548 | | } |
1549 | | parameters[0] = OSSL_PARAM_construct_uint( |
1550 | | OSSL_CIPHER_PARAM_PADDING, |
1551 | | &padding ); |
1552 | | |
1553 | | parameters[1] = OSSL_PARAM_construct_end(); |
1554 | | |
1555 | | if( EVP_CipherInit_ex2( |
1556 | | internal_context->evp_cipher_context, |
1557 | | cipher, |
1558 | | (unsigned char *) internal_context->key, |
1559 | | (unsigned char *) initialization_vector, |
1560 | | mode, |
1561 | | parameters ) != 1 ) |
1562 | | { |
1563 | | error_code = ERR_get_error(); |
1564 | | |
1565 | | ERR_error_string_n( |
1566 | | error_code, |
1567 | | error_string, |
1568 | | 256 ); |
1569 | | |
1570 | | libcerror_error_set( |
1571 | | error, |
1572 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1573 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
1574 | | "%s: unable to initialize cipher with error: %s.", |
1575 | | function, |
1576 | | error_string ); |
1577 | | |
1578 | | goto on_error; |
1579 | | } |
1580 | | #else |
1581 | | if( internal_context->key_bit_size == 128 ) |
1582 | | { |
1583 | | cipher = EVP_aes_128_cbc(); |
1584 | | } |
1585 | | else if( internal_context->key_bit_size == 192 ) |
1586 | | { |
1587 | | cipher = EVP_aes_192_cbc(); |
1588 | | } |
1589 | | else if( internal_context->key_bit_size == 256 ) |
1590 | | { |
1591 | | cipher = EVP_aes_256_cbc(); |
1592 | | } |
1593 | | if( EVP_CipherInit_ex( |
1594 | | internal_context->evp_cipher_context, |
1595 | | cipher, |
1596 | | NULL, |
1597 | | (unsigned char *) internal_context->key, |
1598 | | (unsigned char *) initialization_vector, |
1599 | | mode ) != 1 ) |
1600 | | { |
1601 | | error_code = ERR_get_error(); |
1602 | | |
1603 | | ERR_error_string_n( |
1604 | | error_code, |
1605 | | error_string, |
1606 | | 256 ); |
1607 | | |
1608 | | libcerror_error_set( |
1609 | | error, |
1610 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1611 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
1612 | | "%s: unable to initialize cipher with error: %s.", |
1613 | | function, |
1614 | | error_string ); |
1615 | | |
1616 | | goto on_error; |
1617 | | } |
1618 | | if( EVP_CIPHER_CTX_set_padding( |
1619 | | internal_context->evp_cipher_context, |
1620 | | 1 ) != 1 ) |
1621 | | { |
1622 | | error_code = ERR_get_error(); |
1623 | | |
1624 | | ERR_error_string_n( |
1625 | | error_code, |
1626 | | error_string, |
1627 | | 256 ); |
1628 | | |
1629 | | libcerror_error_set( |
1630 | | error, |
1631 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1632 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
1633 | | "%s: unable to set padding in context with error: %s.", |
1634 | | function, |
1635 | | error_string ); |
1636 | | |
1637 | | goto on_error; |
1638 | | } |
1639 | | #endif /* defined( HAVE_EVP_CIPHERINIT_EX2 ) */ |
1640 | | |
1641 | | if( EVP_CipherUpdate( |
1642 | | internal_context->evp_cipher_context, |
1643 | | (unsigned char *) output_data, |
1644 | | &safe_output_data_size, |
1645 | | (unsigned char *) input_data, |
1646 | | input_data_size ) != 1 ) |
1647 | | { |
1648 | | error_code = ERR_get_error(); |
1649 | | |
1650 | | ERR_error_string_n( |
1651 | | error_code, |
1652 | | error_string, |
1653 | | 256 ); |
1654 | | |
1655 | | libcerror_error_set( |
1656 | | error, |
1657 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1658 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
1659 | | "%s: unable to update cipher with error: %s.", |
1660 | | function, |
1661 | | error_string ); |
1662 | | |
1663 | | goto on_error; |
1664 | | } |
1665 | | /* Just ignore the output of this function |
1666 | | */ |
1667 | | EVP_CipherFinal_ex( |
1668 | | internal_context->evp_cipher_context, |
1669 | | (unsigned char *) block_data, |
1670 | | &safe_output_data_size ); |
1671 | | |
1672 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1673 | | EVP_CIPHER_free( |
1674 | | cipher ); |
1675 | | #endif |
1676 | | return( 1 ); |
1677 | | |
1678 | | on_error: |
1679 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
1680 | | if( cipher != NULL ) |
1681 | | { |
1682 | | EVP_CIPHER_free( |
1683 | | cipher ); |
1684 | | } |
1685 | | #endif |
1686 | | return( -1 ); |
1687 | | } |
1688 | | |
1689 | | #else |
1690 | | |
1691 | | /* De- or encrypts a block of data using AES-CBC (Cipher Block Chaining) using fallback implementation |
1692 | | * The size must be a multitude of the AES block size (16 byte) |
1693 | | * Returns 1 if successful or -1 on error |
1694 | | */ |
1695 | | int libcaes_crypt_cbc( |
1696 | | libcaes_context_t *context, |
1697 | | int mode, |
1698 | | const uint8_t *initialization_vector, |
1699 | | size_t initialization_vector_size, |
1700 | | const uint8_t *input_data, |
1701 | | size_t input_data_size, |
1702 | | uint8_t *output_data, |
1703 | | size_t output_data_size, |
1704 | | libcerror_error_t **error ) |
1705 | 0 | { |
1706 | 0 | uint8_t internal_initialization_vector[ 16 ]; |
1707 | |
|
1708 | 0 | static char *function = "libcaes_crypt_cbc"; |
1709 | 0 | size_t data_offset = 0; |
1710 | |
|
1711 | | #if !defined( LIBCAES_UNFOLLED_LOOPS ) |
1712 | | uint8_t block_index = 0; |
1713 | | #endif |
1714 | |
|
1715 | 0 | if( context == NULL ) |
1716 | 0 | { |
1717 | 0 | libcerror_error_set( |
1718 | 0 | error, |
1719 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1720 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1721 | 0 | "%s: invalid context.", |
1722 | 0 | function ); |
1723 | |
|
1724 | 0 | return( -1 ); |
1725 | 0 | } |
1726 | 0 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
1727 | 0 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
1728 | 0 | { |
1729 | 0 | libcerror_error_set( |
1730 | 0 | error, |
1731 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1732 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1733 | 0 | "%s: unsupported mode.", |
1734 | 0 | function ); |
1735 | |
|
1736 | 0 | return( -1 ); |
1737 | 0 | } |
1738 | 0 | if( initialization_vector == NULL ) |
1739 | 0 | { |
1740 | 0 | libcerror_error_set( |
1741 | 0 | error, |
1742 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1743 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1744 | 0 | "%s: invalid initialization vector.", |
1745 | 0 | function ); |
1746 | |
|
1747 | 0 | return( -1 ); |
1748 | 0 | } |
1749 | 0 | if( initialization_vector_size != 16 ) |
1750 | 0 | { |
1751 | 0 | libcerror_error_set( |
1752 | 0 | error, |
1753 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1754 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1755 | 0 | "%s: invalid initialization vector size value out of bounds.", |
1756 | 0 | function ); |
1757 | |
|
1758 | 0 | return( -1 ); |
1759 | 0 | } |
1760 | 0 | if( input_data == NULL ) |
1761 | 0 | { |
1762 | 0 | libcerror_error_set( |
1763 | 0 | error, |
1764 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1765 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1766 | 0 | "%s: invalid input data.", |
1767 | 0 | function ); |
1768 | |
|
1769 | 0 | return( -1 ); |
1770 | 0 | } |
1771 | | /* Check if the input data size is a multitude of 16-byte |
1772 | | */ |
1773 | 0 | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
1774 | 0 | || ( input_data_size < 16 ) |
1775 | 0 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
1776 | 0 | { |
1777 | 0 | libcerror_error_set( |
1778 | 0 | error, |
1779 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1780 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1781 | 0 | "%s: invalid input data size value out of bounds.", |
1782 | 0 | function ); |
1783 | |
|
1784 | 0 | return( -1 ); |
1785 | 0 | } |
1786 | 0 | if( output_data == NULL ) |
1787 | 0 | { |
1788 | 0 | libcerror_error_set( |
1789 | 0 | error, |
1790 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1791 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1792 | 0 | "%s: invalid output data.", |
1793 | 0 | function ); |
1794 | |
|
1795 | 0 | return( -1 ); |
1796 | 0 | } |
1797 | 0 | if( ( output_data_size < input_data_size ) |
1798 | 0 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
1799 | 0 | { |
1800 | 0 | libcerror_error_set( |
1801 | 0 | error, |
1802 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1803 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1804 | 0 | "%s: invalid output data size value of bounds.", |
1805 | 0 | function ); |
1806 | |
|
1807 | 0 | return( -1 ); |
1808 | 0 | } |
1809 | 0 | if( memory_copy( |
1810 | 0 | internal_initialization_vector, |
1811 | 0 | initialization_vector, |
1812 | 0 | 16 ) == NULL ) |
1813 | 0 | { |
1814 | 0 | libcerror_error_set( |
1815 | 0 | error, |
1816 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1817 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1818 | 0 | "%s: unable to copy initialization vector.", |
1819 | 0 | function ); |
1820 | |
|
1821 | 0 | goto on_error; |
1822 | 0 | } |
1823 | 0 | if( ( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
1824 | 0 | && ( output_data != input_data ) ) |
1825 | 0 | { |
1826 | 0 | if( memory_copy( |
1827 | 0 | output_data, |
1828 | 0 | input_data, |
1829 | 0 | input_data_size ) == NULL ) |
1830 | 0 | { |
1831 | 0 | libcerror_error_set( |
1832 | 0 | error, |
1833 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1834 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1835 | 0 | "%s: unable to copy input data to output data.", |
1836 | 0 | function ); |
1837 | |
|
1838 | 0 | goto on_error; |
1839 | 0 | } |
1840 | 0 | } |
1841 | 0 | while( data_offset <= ( input_data_size - 16 ) ) |
1842 | 0 | { |
1843 | 0 | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
1844 | 0 | { |
1845 | 0 | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
1846 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 0 ]; |
1847 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 1 ]; |
1848 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 2 ]; |
1849 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 3 ]; |
1850 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 4 ]; |
1851 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 5 ]; |
1852 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 6 ]; |
1853 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 7 ]; |
1854 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 8 ]; |
1855 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 9 ]; |
1856 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 10 ]; |
1857 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 11 ]; |
1858 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 12 ]; |
1859 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 13 ]; |
1860 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 14 ]; |
1861 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 15 ]; |
1862 | | #else |
1863 | | for( block_index = 0; |
1864 | | block_index < 16; |
1865 | | block_index++ ) |
1866 | | { |
1867 | | output_data[ data_offset++ ] ^= internal_initialization_vector[ block_index ]; |
1868 | | } |
1869 | | #endif |
1870 | 0 | data_offset -= 16; |
1871 | |
|
1872 | 0 | if( libcaes_crypt_ecb( |
1873 | 0 | context, |
1874 | 0 | LIBCAES_CRYPT_MODE_ENCRYPT, |
1875 | 0 | &( output_data[ data_offset ] ), |
1876 | 0 | 16, |
1877 | 0 | &( output_data[ data_offset ] ), |
1878 | 0 | 16, |
1879 | 0 | error ) != 1 ) |
1880 | 0 | { |
1881 | 0 | libcerror_error_set( |
1882 | 0 | error, |
1883 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
1884 | 0 | LIBCERROR_ENCRYPTION_ERROR_ENCRYPT_FAILED, |
1885 | 0 | "%s: unable to encrypt output data.", |
1886 | 0 | function ); |
1887 | |
|
1888 | 0 | goto on_error; |
1889 | 0 | } |
1890 | 0 | if( memory_copy( |
1891 | 0 | internal_initialization_vector, |
1892 | 0 | &( output_data[ data_offset ] ), |
1893 | 0 | 16 ) == NULL ) |
1894 | 0 | { |
1895 | 0 | libcerror_error_set( |
1896 | 0 | error, |
1897 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1898 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1899 | 0 | "%s: unable to copy enrypted output data to initialization vector.", |
1900 | 0 | function ); |
1901 | |
|
1902 | 0 | goto on_error; |
1903 | 0 | } |
1904 | 0 | } |
1905 | 0 | else |
1906 | 0 | { |
1907 | 0 | if( libcaes_crypt_ecb( |
1908 | 0 | context, |
1909 | 0 | LIBCAES_CRYPT_MODE_DECRYPT, |
1910 | 0 | &( input_data[ data_offset ] ), |
1911 | 0 | 16, |
1912 | 0 | &( output_data[ data_offset ] ), |
1913 | 0 | 16, |
1914 | 0 | error ) != 1 ) |
1915 | 0 | { |
1916 | 0 | libcerror_error_set( |
1917 | 0 | error, |
1918 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
1919 | 0 | LIBCERROR_ENCRYPTION_ERROR_GENERIC, |
1920 | 0 | "%s: unable to decrypt output data.", |
1921 | 0 | function ); |
1922 | |
|
1923 | 0 | goto on_error; |
1924 | 0 | } |
1925 | 0 | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
1926 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 0 ]; |
1927 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 1 ]; |
1928 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 2 ]; |
1929 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 3 ]; |
1930 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 4 ]; |
1931 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 5 ]; |
1932 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 6 ]; |
1933 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 7 ]; |
1934 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 8 ]; |
1935 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 9 ]; |
1936 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 10 ]; |
1937 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 11 ]; |
1938 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 12 ]; |
1939 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 13 ]; |
1940 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 14 ]; |
1941 | 0 | output_data[ data_offset++ ] ^= internal_initialization_vector[ 15 ]; |
1942 | | #else |
1943 | | for( block_index = 0; |
1944 | | block_index < 16; |
1945 | | block_index++ ) |
1946 | | { |
1947 | | output_data[ data_offset++ ] ^= internal_initialization_vector[ block_index ]; |
1948 | | } |
1949 | | #endif |
1950 | 0 | data_offset -= 16; |
1951 | |
|
1952 | 0 | if( memory_copy( |
1953 | 0 | internal_initialization_vector, |
1954 | 0 | &( input_data[ data_offset ] ), |
1955 | 0 | 16 ) == NULL ) |
1956 | 0 | { |
1957 | 0 | libcerror_error_set( |
1958 | 0 | error, |
1959 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1960 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
1961 | 0 | "%s: unable to copy enrypted input data to initialization vector.", |
1962 | 0 | function ); |
1963 | |
|
1964 | 0 | goto on_error; |
1965 | 0 | } |
1966 | 0 | } |
1967 | 0 | data_offset += 16; |
1968 | 0 | } |
1969 | 0 | if( memory_set( |
1970 | 0 | internal_initialization_vector, |
1971 | 0 | 0, |
1972 | 0 | 16 ) == NULL ) |
1973 | 0 | { |
1974 | 0 | libcerror_error_set( |
1975 | 0 | error, |
1976 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
1977 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
1978 | 0 | "%s: unable to clear initialization vector.", |
1979 | 0 | function ); |
1980 | |
|
1981 | 0 | goto on_error; |
1982 | 0 | } |
1983 | 0 | return( 1 ); |
1984 | | |
1985 | 0 | on_error: |
1986 | 0 | memory_set( |
1987 | 0 | internal_initialization_vector, |
1988 | 0 | 0, |
1989 | 0 | 16 ); |
1990 | |
|
1991 | 0 | return( -1 ); |
1992 | 0 | } |
1993 | | |
1994 | | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_CBC_ENCRYPT ) */ |
1995 | | |
1996 | | /* De- or encrypts a block of data using AES-CCM (Counter with CBC-MAC) |
1997 | | * Note that the key must be set in encryption mode (LIBCAES_CRYPT_MODE_ENCRYPT) for both de- and encryption. |
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 | 0 | { |
2011 | 0 | uint8_t block_data[ 16 ]; |
2012 | 0 | uint8_t internal_initialization_vector[ 16 ]; |
2013 | |
|
2014 | 0 | static char *function = "libcaes_crypt_ccm"; |
2015 | 0 | size_t data_offset = 0; |
2016 | 0 | size_t remaining_data_size = 0; |
2017 | 0 | uint8_t block_index = 0; |
2018 | |
|
2019 | 0 | 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 | 0 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2031 | 0 | && ( 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 | 0 | 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 | 0 | 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 | 0 | 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 | 0 | if( ( input_data_size < 16 ) |
2076 | 0 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2077 | 0 | { |
2078 | 0 | libcerror_error_set( |
2079 | 0 | error, |
2080 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2081 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2082 | 0 | "%s: invalid input data size value out of bounds.", |
2083 | 0 | function ); |
2084 | |
|
2085 | 0 | return( -1 ); |
2086 | 0 | } |
2087 | 0 | 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 | 0 | if( ( output_data_size < input_data_size ) |
2099 | 0 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2100 | 0 | { |
2101 | 0 | libcerror_error_set( |
2102 | 0 | error, |
2103 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2104 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2105 | 0 | "%s: invalid output data size value out of bounds.", |
2106 | 0 | function ); |
2107 | |
|
2108 | 0 | return( -1 ); |
2109 | 0 | } |
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 | 0 | if( memory_set( |
2116 | 0 | internal_initialization_vector, |
2117 | 0 | 0, |
2118 | 0 | 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 | 0 | if( memory_copy( |
2130 | 0 | &( internal_initialization_vector[ 1 ] ), |
2131 | 0 | nonce, |
2132 | 0 | 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 | 0 | internal_initialization_vector[ 0 ] = 15 - (uint8_t) nonce_size - 1; |
2144 | |
|
2145 | 0 | if( memory_copy( |
2146 | 0 | output_data, |
2147 | 0 | input_data, |
2148 | 0 | 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 | 0 | while( data_offset <= ( input_data_size - 16 ) ) |
2160 | 0 | { |
2161 | 0 | if( libcaes_crypt_ecb( |
2162 | 0 | context, |
2163 | 0 | LIBCAES_CRYPT_MODE_ENCRYPT, |
2164 | 0 | internal_initialization_vector, |
2165 | 0 | 16, |
2166 | 0 | block_data, |
2167 | 0 | 16, |
2168 | 0 | 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 | 0 | #if defined( LIBCAES_UNFOLLED_LOOPS ) |
2180 | 0 | output_data[ data_offset++ ] ^= block_data[ 0 ]; |
2181 | 0 | output_data[ data_offset++ ] ^= block_data[ 1 ]; |
2182 | 0 | output_data[ data_offset++ ] ^= block_data[ 2 ]; |
2183 | 0 | output_data[ data_offset++ ] ^= block_data[ 3 ]; |
2184 | 0 | output_data[ data_offset++ ] ^= block_data[ 4 ]; |
2185 | 0 | output_data[ data_offset++ ] ^= block_data[ 5 ]; |
2186 | 0 | output_data[ data_offset++ ] ^= block_data[ 6 ]; |
2187 | 0 | output_data[ data_offset++ ] ^= block_data[ 7 ]; |
2188 | 0 | output_data[ data_offset++ ] ^= block_data[ 8 ]; |
2189 | 0 | output_data[ data_offset++ ] ^= block_data[ 9 ]; |
2190 | 0 | output_data[ data_offset++ ] ^= block_data[ 10 ]; |
2191 | 0 | output_data[ data_offset++ ] ^= block_data[ 11 ]; |
2192 | 0 | output_data[ data_offset++ ] ^= block_data[ 12 ]; |
2193 | 0 | output_data[ data_offset++ ] ^= block_data[ 13 ]; |
2194 | 0 | output_data[ data_offset++ ] ^= block_data[ 14 ]; |
2195 | 0 | 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 | 0 | internal_initialization_vector[ 15 ] += 1; |
2205 | 0 | } |
2206 | 0 | if( data_offset < input_data_size ) |
2207 | 0 | { |
2208 | 0 | remaining_data_size = input_data_size - data_offset; |
2209 | |
|
2210 | 0 | if( libcaes_crypt_ecb( |
2211 | 0 | context, |
2212 | 0 | LIBCAES_CRYPT_MODE_ENCRYPT, |
2213 | 0 | internal_initialization_vector, |
2214 | 0 | 16, |
2215 | 0 | block_data, |
2216 | 0 | 16, |
2217 | 0 | 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 | 0 | for( block_index = 0; |
2229 | 0 | block_index < (uint8_t) remaining_data_size; |
2230 | 0 | block_index++ ) |
2231 | 0 | { |
2232 | 0 | output_data[ data_offset++ ] ^= block_data[ block_index ]; |
2233 | 0 | } |
2234 | 0 | } |
2235 | 0 | if( memory_set( |
2236 | 0 | block_data, |
2237 | 0 | 0, |
2238 | 0 | 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 | 0 | if( memory_set( |
2250 | 0 | internal_initialization_vector, |
2251 | 0 | 0, |
2252 | 0 | 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 | 0 | 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 | 0 | } |
2278 | | |
2279 | | /* De- or encrypts a block of data using AES-CFB (Cipher Feedback Mode) |
2280 | | * Note that the key must be set with mode LIBCAES_CRYPT_MODE_ENCRYPT |
2281 | | * Returns 1 if successful or -1 on error |
2282 | | */ |
2283 | | int libcaes_crypt_cfb( |
2284 | | libcaes_context_t *context, |
2285 | | int mode, |
2286 | | const uint8_t *initialization_vector, |
2287 | | size_t initialization_vector_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 | 0 | { |
2294 | 0 | uint8_t internal_initialization_vector[ 16 ]; |
2295 | |
|
2296 | 0 | static char *function = "libcaes_crypt_cfb"; |
2297 | 0 | size_t data_offset = 0; |
2298 | 0 | size_t initialization_vector_index = 0; |
2299 | 0 | uint8_t byte_value = 0; |
2300 | |
|
2301 | 0 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2302 | 0 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2303 | 0 | { |
2304 | 0 | libcerror_error_set( |
2305 | 0 | error, |
2306 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2307 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2308 | 0 | "%s: unsupported mode.", |
2309 | 0 | function ); |
2310 | |
|
2311 | 0 | return( -1 ); |
2312 | 0 | } |
2313 | 0 | if( initialization_vector == NULL ) |
2314 | 0 | { |
2315 | 0 | libcerror_error_set( |
2316 | 0 | error, |
2317 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2318 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2319 | 0 | "%s: invalid initialization vector.", |
2320 | 0 | function ); |
2321 | |
|
2322 | 0 | return( -1 ); |
2323 | 0 | } |
2324 | 0 | if( initialization_vector_size != 16 ) |
2325 | 0 | { |
2326 | 0 | libcerror_error_set( |
2327 | 0 | error, |
2328 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2329 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2330 | 0 | "%s: invalid initialization vector size value out of bounds.", |
2331 | 0 | function ); |
2332 | |
|
2333 | 0 | return( -1 ); |
2334 | 0 | } |
2335 | 0 | if( input_data == NULL ) |
2336 | 0 | { |
2337 | 0 | libcerror_error_set( |
2338 | 0 | error, |
2339 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2340 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2341 | 0 | "%s: invalid input data.", |
2342 | 0 | function ); |
2343 | |
|
2344 | 0 | return( -1 ); |
2345 | 0 | } |
2346 | | /* Check if the input data size is a multitude of 16-byte |
2347 | | */ |
2348 | 0 | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
2349 | 0 | || ( input_data_size < 16 ) |
2350 | 0 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2351 | 0 | { |
2352 | 0 | libcerror_error_set( |
2353 | 0 | error, |
2354 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2355 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2356 | 0 | "%s: invalid input data size value out of bounds.", |
2357 | 0 | function ); |
2358 | |
|
2359 | 0 | return( -1 ); |
2360 | 0 | } |
2361 | 0 | if( output_data == NULL ) |
2362 | 0 | { |
2363 | 0 | libcerror_error_set( |
2364 | 0 | error, |
2365 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2366 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2367 | 0 | "%s: invalid output data.", |
2368 | 0 | function ); |
2369 | |
|
2370 | 0 | return( -1 ); |
2371 | 0 | } |
2372 | 0 | if( ( output_data_size < input_data_size ) |
2373 | 0 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2374 | 0 | { |
2375 | 0 | libcerror_error_set( |
2376 | 0 | error, |
2377 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2378 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2379 | 0 | "%s: invalid output data size value out of bounds.", |
2380 | 0 | function ); |
2381 | |
|
2382 | 0 | return( -1 ); |
2383 | 0 | } |
2384 | 0 | if( memory_copy( |
2385 | 0 | internal_initialization_vector, |
2386 | 0 | initialization_vector, |
2387 | 0 | 16 ) == NULL ) |
2388 | 0 | { |
2389 | 0 | libcerror_error_set( |
2390 | 0 | error, |
2391 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2392 | 0 | LIBCERROR_MEMORY_ERROR_COPY_FAILED, |
2393 | 0 | "%s: unable to copy initialization vector.", |
2394 | 0 | function ); |
2395 | |
|
2396 | 0 | goto on_error; |
2397 | 0 | } |
2398 | 0 | initialization_vector_index = 16; |
2399 | |
|
2400 | 0 | for( data_offset = 0; |
2401 | 0 | data_offset < input_data_size; |
2402 | 0 | data_offset++ ) |
2403 | 0 | { |
2404 | 0 | if( initialization_vector_index > 15 ) |
2405 | 0 | { |
2406 | 0 | if( libcaes_crypt_ecb( |
2407 | 0 | context, |
2408 | 0 | LIBCAES_CRYPT_MODE_ENCRYPT, |
2409 | 0 | internal_initialization_vector, |
2410 | 0 | initialization_vector_size, |
2411 | 0 | internal_initialization_vector, |
2412 | 0 | initialization_vector_size, |
2413 | 0 | error ) != 1 ) |
2414 | 0 | { |
2415 | 0 | libcerror_error_set( |
2416 | 0 | error, |
2417 | 0 | LIBCERROR_ERROR_DOMAIN_ENCRYPTION, |
2418 | 0 | LIBCERROR_ENCRYPTION_ERROR_GENERIC, |
2419 | 0 | "%s: unable to de/encrypt initialization vector.", |
2420 | 0 | function ); |
2421 | |
|
2422 | 0 | goto on_error; |
2423 | 0 | } |
2424 | 0 | initialization_vector_index = 0; |
2425 | 0 | } |
2426 | 0 | output_data[ data_offset ] = input_data[ data_offset ] ^ internal_initialization_vector[ initialization_vector_index ]; |
2427 | |
|
2428 | 0 | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
2429 | 0 | { |
2430 | 0 | byte_value = output_data[ data_offset ]; |
2431 | 0 | } |
2432 | 0 | else |
2433 | 0 | { |
2434 | 0 | byte_value = input_data[ data_offset ]; |
2435 | 0 | } |
2436 | 0 | internal_initialization_vector[ initialization_vector_index++ ] = byte_value; |
2437 | 0 | } |
2438 | 0 | if( memory_set( |
2439 | 0 | internal_initialization_vector, |
2440 | 0 | 0, |
2441 | 0 | 16 ) == NULL ) |
2442 | 0 | { |
2443 | 0 | libcerror_error_set( |
2444 | 0 | error, |
2445 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2446 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2447 | 0 | "%s: unable to clear initialization vector.", |
2448 | 0 | function ); |
2449 | |
|
2450 | 0 | goto on_error; |
2451 | 0 | } |
2452 | 0 | return( 1 ); |
2453 | | |
2454 | 0 | on_error: |
2455 | 0 | memory_set( |
2456 | 0 | internal_initialization_vector, |
2457 | 0 | 0, |
2458 | 0 | 16 ); |
2459 | |
|
2460 | 0 | return( -1 ); |
2461 | 0 | } |
2462 | | |
2463 | | #if defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_ECB_ENCRYPT ) |
2464 | | |
2465 | | /* De- or encrypts a block of data using AES-ECB (Electronic CodeBook) using OpenSSL |
2466 | | * The size must be a multitude of the AES block size (16 byte) |
2467 | | * Returns 1 if successful or -1 on error |
2468 | | */ |
2469 | | int libcaes_crypt_ecb( |
2470 | | libcaes_context_t *context, |
2471 | | int mode, |
2472 | | const uint8_t *input_data, |
2473 | | size_t input_data_size, |
2474 | | uint8_t *output_data, |
2475 | | size_t output_data_size, |
2476 | | libcerror_error_t **error ) |
2477 | | { |
2478 | | libcaes_internal_context_t *internal_context = NULL; |
2479 | | static char *function = "libcaes_crypt_ecb"; |
2480 | | int result = 1; |
2481 | | int safe_mode = 0; |
2482 | | |
2483 | | if( context == NULL ) |
2484 | | { |
2485 | | libcerror_error_set( |
2486 | | error, |
2487 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2488 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2489 | | "%s: invalid context.", |
2490 | | function ); |
2491 | | |
2492 | | return( -1 ); |
2493 | | } |
2494 | | internal_context = (libcaes_internal_context_t *) context; |
2495 | | |
2496 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2497 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2498 | | { |
2499 | | libcerror_error_set( |
2500 | | error, |
2501 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2502 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2503 | | "%s: unsupported mode.", |
2504 | | function ); |
2505 | | |
2506 | | return( -1 ); |
2507 | | } |
2508 | | if( input_data == NULL ) |
2509 | | { |
2510 | | libcerror_error_set( |
2511 | | error, |
2512 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2513 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2514 | | "%s: invalid input data.", |
2515 | | function ); |
2516 | | |
2517 | | return( -1 ); |
2518 | | } |
2519 | | if( ( input_data_size < 16 ) |
2520 | | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2521 | | { |
2522 | | libcerror_error_set( |
2523 | | error, |
2524 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2525 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2526 | | "%s: invalid input data size value out of bounds.", |
2527 | | function ); |
2528 | | |
2529 | | return( -1 ); |
2530 | | } |
2531 | | if( output_data == NULL ) |
2532 | | { |
2533 | | libcerror_error_set( |
2534 | | error, |
2535 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2536 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2537 | | "%s: invalid output data.", |
2538 | | function ); |
2539 | | |
2540 | | return( -1 ); |
2541 | | } |
2542 | | if( ( output_data_size < input_data_size ) |
2543 | | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2544 | | { |
2545 | | libcerror_error_set( |
2546 | | error, |
2547 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2548 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2549 | | "%s: invalid output data size value out of bounds.", |
2550 | | function ); |
2551 | | |
2552 | | return( -1 ); |
2553 | | } |
2554 | | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
2555 | | { |
2556 | | safe_mode = AES_ENCRYPT; |
2557 | | } |
2558 | | else |
2559 | | { |
2560 | | safe_mode = AES_DECRYPT; |
2561 | | } |
2562 | | AES_ecb_encrypt( |
2563 | | (unsigned char *) input_data, |
2564 | | (unsigned char *) output_data, |
2565 | | &( internal_context->key ), |
2566 | | safe_mode ); |
2567 | | |
2568 | | return( result ); |
2569 | | } |
2570 | | |
2571 | | #elif defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_EVP_H ) && defined( HAVE_EVP_CRYPTO_AES_ECB ) |
2572 | | |
2573 | | /* De- or encrypts a block of data using AES-ECB (Electronic CodeBook) using OpenSSL EVP |
2574 | | * The size must be a multitude of the AES block size (16 byte) |
2575 | | * Returns 1 if successful or -1 on error |
2576 | | */ |
2577 | | int libcaes_crypt_ecb( |
2578 | | libcaes_context_t *context, |
2579 | | int mode, |
2580 | | const uint8_t *input_data, |
2581 | | size_t input_data_size, |
2582 | | uint8_t *output_data, |
2583 | | size_t output_data_size, |
2584 | | libcerror_error_t **error ) |
2585 | | { |
2586 | | uint8_t block_data[ EVP_MAX_BLOCK_LENGTH ]; |
2587 | | char error_string[ 256 ]; |
2588 | | |
2589 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
2590 | | OSSL_PARAM parameters[2]; |
2591 | | |
2592 | | EVP_CIPHER *cipher = NULL; |
2593 | | const char *cipher_string = NULL; |
2594 | | unsigned int padding = 0; |
2595 | | #else |
2596 | | const EVP_CIPHER *cipher = NULL; |
2597 | | #endif |
2598 | | |
2599 | | libcaes_internal_context_t *internal_context = NULL; |
2600 | | static char *function = "libcaes_crypt_ecb"; |
2601 | | unsigned long error_code = 0; |
2602 | | int safe_output_data_size = 0; |
2603 | | |
2604 | | if( context == NULL ) |
2605 | | { |
2606 | | libcerror_error_set( |
2607 | | error, |
2608 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2609 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2610 | | "%s: invalid context.", |
2611 | | function ); |
2612 | | |
2613 | | return( -1 ); |
2614 | | } |
2615 | | internal_context = (libcaes_internal_context_t *) context; |
2616 | | |
2617 | | if( ( internal_context->key_bit_size != 128 ) |
2618 | | && ( internal_context->key_bit_size != 192 ) |
2619 | | && ( internal_context->key_bit_size != 256 ) ) |
2620 | | { |
2621 | | libcerror_error_set( |
2622 | | error, |
2623 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2624 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2625 | | "%s: invalid context - unsupported key bit size.", |
2626 | | function ); |
2627 | | |
2628 | | return( -1 ); |
2629 | | } |
2630 | | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2631 | | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2632 | | { |
2633 | | libcerror_error_set( |
2634 | | error, |
2635 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2636 | | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2637 | | "%s: unsupported mode.", |
2638 | | function ); |
2639 | | |
2640 | | return( -1 ); |
2641 | | } |
2642 | | if( input_data == NULL ) |
2643 | | { |
2644 | | libcerror_error_set( |
2645 | | error, |
2646 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2647 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2648 | | "%s: invalid input data.", |
2649 | | function ); |
2650 | | |
2651 | | return( -1 ); |
2652 | | } |
2653 | | if( ( input_data_size < 16 ) |
2654 | | || ( input_data_size > (size_t) INT_MAX ) ) |
2655 | | { |
2656 | | libcerror_error_set( |
2657 | | error, |
2658 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2659 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2660 | | "%s: invalid input data size value out of bounds.", |
2661 | | function ); |
2662 | | |
2663 | | return( -1 ); |
2664 | | } |
2665 | | if( output_data == NULL ) |
2666 | | { |
2667 | | libcerror_error_set( |
2668 | | error, |
2669 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2670 | | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2671 | | "%s: invalid output data.", |
2672 | | function ); |
2673 | | |
2674 | | return( -1 ); |
2675 | | } |
2676 | | if( ( output_data_size < input_data_size ) |
2677 | | || ( output_data_size > (size_t) INT_MAX ) ) |
2678 | | { |
2679 | | libcerror_error_set( |
2680 | | error, |
2681 | | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2682 | | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2683 | | "%s: invalid output data size value out of bounds.", |
2684 | | function ); |
2685 | | |
2686 | | return( -1 ); |
2687 | | } |
2688 | | if( memory_set( |
2689 | | block_data, |
2690 | | 0, |
2691 | | EVP_MAX_BLOCK_LENGTH ) == NULL ) |
2692 | | { |
2693 | | libcerror_error_set( |
2694 | | error, |
2695 | | LIBCERROR_ERROR_DOMAIN_MEMORY, |
2696 | | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
2697 | | "%s: unable to clear block data.", |
2698 | | function ); |
2699 | | |
2700 | | goto on_error; |
2701 | | } |
2702 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
2703 | | if( EVP_CIPHER_CTX_reset( |
2704 | | internal_context->evp_cipher_context ) != 1 ) |
2705 | | { |
2706 | | error_code = ERR_get_error(); |
2707 | | |
2708 | | ERR_error_string_n( |
2709 | | error_code, |
2710 | | error_string, |
2711 | | 256 ); |
2712 | | |
2713 | | libcerror_error_set( |
2714 | | error, |
2715 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2716 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
2717 | | "%s: unable to reset cipher context with error: %s.", |
2718 | | function, |
2719 | | error_string ); |
2720 | | |
2721 | | goto on_error; |
2722 | | } |
2723 | | if( internal_context->key_bit_size == 128 ) |
2724 | | { |
2725 | | cipher_string = "AES-128-ECB"; |
2726 | | } |
2727 | | else if( internal_context->key_bit_size == 192 ) |
2728 | | { |
2729 | | cipher_string = "AES-192-ECB"; |
2730 | | } |
2731 | | else if( internal_context->key_bit_size == 256 ) |
2732 | | { |
2733 | | cipher_string = "AES-256-ECB"; |
2734 | | } |
2735 | | cipher = EVP_CIPHER_fetch( |
2736 | | NULL, |
2737 | | cipher_string, |
2738 | | NULL ); |
2739 | | |
2740 | | if( cipher == NULL ) |
2741 | | { |
2742 | | libcerror_error_set( |
2743 | | error, |
2744 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2745 | | LIBCERROR_RUNTIME_ERROR_VALUE_MISSING, |
2746 | | "%s: missing cipher.", |
2747 | | function ); |
2748 | | |
2749 | | goto on_error; |
2750 | | } |
2751 | | parameters[0] = OSSL_PARAM_construct_uint( |
2752 | | OSSL_CIPHER_PARAM_PADDING, |
2753 | | &padding ); |
2754 | | |
2755 | | parameters[1] = OSSL_PARAM_construct_end(); |
2756 | | |
2757 | | if( EVP_CipherInit_ex2( |
2758 | | internal_context->evp_cipher_context, |
2759 | | cipher, |
2760 | | (unsigned char *) internal_context->key, |
2761 | | NULL, |
2762 | | mode, |
2763 | | parameters ) != 1 ) |
2764 | | { |
2765 | | error_code = ERR_get_error(); |
2766 | | |
2767 | | ERR_error_string_n( |
2768 | | error_code, |
2769 | | error_string, |
2770 | | 256 ); |
2771 | | |
2772 | | libcerror_error_set( |
2773 | | error, |
2774 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2775 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
2776 | | "%s: unable to initialize cipher with error: %s.", |
2777 | | function, |
2778 | | error_string ); |
2779 | | |
2780 | | goto on_error; |
2781 | | } |
2782 | | #else |
2783 | | if( internal_context->key_bit_size == 128 ) |
2784 | | { |
2785 | | cipher = EVP_aes_128_ecb(); |
2786 | | } |
2787 | | else if( internal_context->key_bit_size == 192 ) |
2788 | | { |
2789 | | cipher = EVP_aes_192_ecb(); |
2790 | | } |
2791 | | else if( internal_context->key_bit_size == 256 ) |
2792 | | { |
2793 | | cipher = EVP_aes_256_ecb(); |
2794 | | } |
2795 | | if( EVP_CipherInit_ex( |
2796 | | internal_context->evp_cipher_context, |
2797 | | cipher, |
2798 | | NULL, |
2799 | | (unsigned char *) internal_context->key, |
2800 | | NULL, |
2801 | | mode ) != 1 ) |
2802 | | { |
2803 | | error_code = ERR_get_error(); |
2804 | | |
2805 | | ERR_error_string_n( |
2806 | | error_code, |
2807 | | error_string, |
2808 | | 256 ); |
2809 | | |
2810 | | libcerror_error_set( |
2811 | | error, |
2812 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2813 | | LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED, |
2814 | | "%s: unable to initialize cipher with error: %s.", |
2815 | | function, |
2816 | | error_string ); |
2817 | | |
2818 | | goto on_error; |
2819 | | } |
2820 | | if( EVP_CIPHER_CTX_set_padding( |
2821 | | internal_context->evp_cipher_context, |
2822 | | 1 ) != 1 ) |
2823 | | { |
2824 | | error_code = ERR_get_error(); |
2825 | | |
2826 | | ERR_error_string_n( |
2827 | | error_code, |
2828 | | error_string, |
2829 | | 256 ); |
2830 | | |
2831 | | libcerror_error_set( |
2832 | | error, |
2833 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2834 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
2835 | | "%s: unable to set padding in context with error: %s.", |
2836 | | function, |
2837 | | error_string ); |
2838 | | |
2839 | | goto on_error; |
2840 | | } |
2841 | | #endif /* defined( HAVE_EVP_CIPHERINIT_EX2 ) */ |
2842 | | |
2843 | | if( EVP_CipherUpdate( |
2844 | | internal_context->evp_cipher_context, |
2845 | | (unsigned char *) output_data, |
2846 | | &safe_output_data_size, |
2847 | | (unsigned char *) input_data, |
2848 | | 16 ) != 1 ) |
2849 | | { |
2850 | | error_code = ERR_get_error(); |
2851 | | |
2852 | | ERR_error_string_n( |
2853 | | error_code, |
2854 | | error_string, |
2855 | | 256 ); |
2856 | | |
2857 | | libcerror_error_set( |
2858 | | error, |
2859 | | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2860 | | LIBCERROR_RUNTIME_ERROR_SET_FAILED, |
2861 | | "%s: unable to update cipher with error: %s.", |
2862 | | function, |
2863 | | error_string ); |
2864 | | |
2865 | | goto on_error; |
2866 | | } |
2867 | | /* Just ignore the output of this function |
2868 | | */ |
2869 | | EVP_CipherFinal_ex( |
2870 | | internal_context->evp_cipher_context, |
2871 | | (unsigned char *) block_data, |
2872 | | &safe_output_data_size ); |
2873 | | |
2874 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
2875 | | EVP_CIPHER_free( |
2876 | | cipher ); |
2877 | | #endif |
2878 | | return( 1 ); |
2879 | | |
2880 | | on_error: |
2881 | | #if defined( HAVE_EVP_CIPHERINIT_EX2 ) |
2882 | | if( cipher != NULL ) |
2883 | | { |
2884 | | EVP_CIPHER_free( |
2885 | | cipher ); |
2886 | | } |
2887 | | #endif |
2888 | | return( -1 ); |
2889 | | } |
2890 | | |
2891 | | #else |
2892 | | |
2893 | | /* De- or encrypts a block of data using AES-ECB (Electronic CodeBook) using fallback implementation |
2894 | | * The size must be a multitude of the AES block size (16 byte) |
2895 | | * Returns 1 if successful or -1 on error |
2896 | | */ |
2897 | | int libcaes_crypt_ecb( |
2898 | | libcaes_context_t *context, |
2899 | | int mode, |
2900 | | const uint8_t *input_data, |
2901 | | size_t input_data_size, |
2902 | | uint8_t *output_data, |
2903 | | size_t output_data_size, |
2904 | | libcerror_error_t **error ) |
2905 | 0 | { |
2906 | 0 | uint32_t cipher_values_32bit[ 4 ]; |
2907 | 0 | uint32_t values_32bit[ 4 ]; |
2908 | |
|
2909 | 0 | libcaes_internal_context_t *internal_context = NULL; |
2910 | 0 | uint32_t *round_keys = NULL; |
2911 | 0 | static char *function = "libcaes_crypt_ecb"; |
2912 | 0 | size_t data_offset = 0; |
2913 | 0 | uint32_t substitution_value = 0; |
2914 | 0 | uint32_t table_value = 0; |
2915 | 0 | int result = 1; |
2916 | 0 | int round_key_iterator = 0; |
2917 | |
|
2918 | 0 | if( context == NULL ) |
2919 | 0 | { |
2920 | 0 | libcerror_error_set( |
2921 | 0 | error, |
2922 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2923 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2924 | 0 | "%s: invalid context.", |
2925 | 0 | function ); |
2926 | |
|
2927 | 0 | return( -1 ); |
2928 | 0 | } |
2929 | 0 | internal_context = (libcaes_internal_context_t *) context; |
2930 | |
|
2931 | 0 | if( ( mode != LIBCAES_CRYPT_MODE_DECRYPT ) |
2932 | 0 | && ( mode != LIBCAES_CRYPT_MODE_ENCRYPT ) ) |
2933 | 0 | { |
2934 | 0 | libcerror_error_set( |
2935 | 0 | error, |
2936 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2937 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2938 | 0 | "%s: unsupported mode.", |
2939 | 0 | function ); |
2940 | |
|
2941 | 0 | return( -1 ); |
2942 | 0 | } |
2943 | 0 | if( input_data == NULL ) |
2944 | 0 | { |
2945 | 0 | libcerror_error_set( |
2946 | 0 | error, |
2947 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2948 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2949 | 0 | "%s: invalid input data.", |
2950 | 0 | function ); |
2951 | |
|
2952 | 0 | return( -1 ); |
2953 | 0 | } |
2954 | | /* Check if the input data size is a multitude of 16-byte |
2955 | | */ |
2956 | 0 | if( ( ( input_data_size & (size_t) 0x0f ) != 0 ) |
2957 | 0 | || ( input_data_size < 16 ) |
2958 | 0 | || ( input_data_size > (size_t) SSIZE_MAX ) ) |
2959 | 0 | { |
2960 | 0 | libcerror_error_set( |
2961 | 0 | error, |
2962 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2963 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2964 | 0 | "%s: invalid input data size value out of bounds.", |
2965 | 0 | function ); |
2966 | |
|
2967 | 0 | return( -1 ); |
2968 | 0 | } |
2969 | 0 | if( output_data == NULL ) |
2970 | 0 | { |
2971 | 0 | libcerror_error_set( |
2972 | 0 | error, |
2973 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2974 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2975 | 0 | "%s: invalid output data.", |
2976 | 0 | function ); |
2977 | |
|
2978 | 0 | return( -1 ); |
2979 | 0 | } |
2980 | 0 | if( ( output_data_size < input_data_size ) |
2981 | 0 | || ( output_data_size > (size_t) SSIZE_MAX ) ) |
2982 | 0 | { |
2983 | 0 | libcerror_error_set( |
2984 | 0 | error, |
2985 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2986 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
2987 | 0 | "%s: invalid output data size value out of bounds.", |
2988 | 0 | function ); |
2989 | |
|
2990 | 0 | return( -1 ); |
2991 | 0 | } |
2992 | 0 | while( data_offset < input_data_size ) |
2993 | 0 | { |
2994 | 0 | byte_stream_copy_to_uint32_little_endian( |
2995 | 0 | &( input_data[ data_offset ] ), |
2996 | 0 | values_32bit[ 0 ] ); |
2997 | |
|
2998 | 0 | byte_stream_copy_to_uint32_little_endian( |
2999 | 0 | &( input_data[ data_offset + 4 ] ), |
3000 | 0 | values_32bit[ 1 ] ); |
3001 | |
|
3002 | 0 | byte_stream_copy_to_uint32_little_endian( |
3003 | 0 | &( input_data[ data_offset + 8 ] ), |
3004 | 0 | values_32bit[ 2 ] ); |
3005 | |
|
3006 | 0 | byte_stream_copy_to_uint32_little_endian( |
3007 | 0 | &( input_data[ data_offset + 12 ] ), |
3008 | 0 | values_32bit[ 3 ] ); |
3009 | |
|
3010 | 0 | round_keys = internal_context->round_keys; |
3011 | |
|
3012 | 0 | values_32bit[ 0 ] ^= round_keys[ 0 ]; |
3013 | 0 | values_32bit[ 1 ] ^= round_keys[ 1 ]; |
3014 | 0 | values_32bit[ 2 ] ^= round_keys[ 2 ]; |
3015 | 0 | values_32bit[ 3 ] ^= round_keys[ 3 ]; |
3016 | |
|
3017 | 0 | round_keys += 4; |
3018 | |
|
3019 | 0 | if( mode == LIBCAES_CRYPT_MODE_ENCRYPT ) |
3020 | 0 | { |
3021 | 0 | for( round_key_iterator = ( internal_context->number_of_round_keys / 2 ); |
3022 | 0 | round_key_iterator > 1; |
3023 | 0 | round_key_iterator-- ) |
3024 | 0 | { |
3025 | 0 | libcaes_calculate_forward_table_round( |
3026 | 0 | round_keys, |
3027 | 0 | cipher_values_32bit, |
3028 | 0 | values_32bit, |
3029 | 0 | table_value ); |
3030 | |
|
3031 | 0 | round_keys += 4; |
3032 | |
|
3033 | 0 | libcaes_calculate_forward_table_round( |
3034 | 0 | round_keys, |
3035 | 0 | values_32bit, |
3036 | 0 | cipher_values_32bit, |
3037 | 0 | table_value ); |
3038 | |
|
3039 | 0 | round_keys += 4; |
3040 | 0 | } |
3041 | 0 | libcaes_calculate_forward_table_round( |
3042 | 0 | round_keys, |
3043 | 0 | cipher_values_32bit, |
3044 | 0 | values_32bit, |
3045 | 0 | table_value ); |
3046 | |
|
3047 | 0 | round_keys += 4; |
3048 | |
|
3049 | 0 | libcaes_calculate_forward_substitution_round( |
3050 | 0 | round_keys, |
3051 | 0 | values_32bit, |
3052 | 0 | cipher_values_32bit, |
3053 | 0 | substitution_value ); |
3054 | 0 | } |
3055 | 0 | else |
3056 | 0 | { |
3057 | 0 | for( round_key_iterator = ( internal_context->number_of_round_keys / 2 ); |
3058 | 0 | round_key_iterator > 1; |
3059 | 0 | round_key_iterator-- ) |
3060 | 0 | { |
3061 | 0 | libcaes_calculate_reverse_table_round( |
3062 | 0 | round_keys, |
3063 | 0 | cipher_values_32bit, |
3064 | 0 | values_32bit, |
3065 | 0 | table_value ); |
3066 | |
|
3067 | 0 | round_keys += 4; |
3068 | |
|
3069 | 0 | libcaes_calculate_reverse_table_round( |
3070 | 0 | round_keys, |
3071 | 0 | values_32bit, |
3072 | 0 | cipher_values_32bit, |
3073 | 0 | table_value ); |
3074 | |
|
3075 | 0 | round_keys += 4; |
3076 | 0 | } |
3077 | 0 | libcaes_calculate_reverse_table_round( |
3078 | 0 | round_keys, |
3079 | 0 | cipher_values_32bit, |
3080 | 0 | values_32bit, |
3081 | 0 | table_value ); |
3082 | |
|
3083 | 0 | round_keys += 4; |
3084 | |
|
3085 | 0 | libcaes_calculate_reverse_substitution_round( |
3086 | 0 | round_keys, |
3087 | 0 | values_32bit, |
3088 | 0 | cipher_values_32bit, |
3089 | 0 | table_value ); |
3090 | 0 | } |
3091 | 0 | byte_stream_copy_from_uint32_little_endian( |
3092 | 0 | &( output_data[ data_offset ] ), |
3093 | 0 | values_32bit[ 0 ] ); |
3094 | |
|
3095 | 0 | byte_stream_copy_from_uint32_little_endian( |
3096 | 0 | &( output_data[ data_offset + 4 ] ), |
3097 | 0 | values_32bit[ 1 ] ); |
3098 | |
|
3099 | 0 | byte_stream_copy_from_uint32_little_endian( |
3100 | 0 | &( output_data[ data_offset + 8 ] ), |
3101 | 0 | values_32bit[ 2 ] ); |
3102 | |
|
3103 | 0 | byte_stream_copy_from_uint32_little_endian( |
3104 | 0 | &( output_data[ data_offset + 12 ] ), |
3105 | 0 | values_32bit[ 3 ] ); |
3106 | |
|
3107 | 0 | if( memory_set( |
3108 | 0 | values_32bit, |
3109 | 0 | 0, |
3110 | 0 | sizeof( uint32_t ) * 4 ) == NULL ) |
3111 | 0 | { |
3112 | 0 | libcerror_error_set( |
3113 | 0 | error, |
3114 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
3115 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
3116 | 0 | "%s: unable to clear values 32-bit.", |
3117 | 0 | function ); |
3118 | |
|
3119 | 0 | result = -1; |
3120 | 0 | } |
3121 | 0 | if( memory_set( |
3122 | 0 | cipher_values_32bit, |
3123 | 0 | 0, |
3124 | 0 | sizeof( uint32_t ) * 4 ) == NULL ) |
3125 | 0 | { |
3126 | 0 | libcerror_error_set( |
3127 | 0 | error, |
3128 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
3129 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
3130 | 0 | "%s: unable to clear cipher values 32-bit.", |
3131 | 0 | function ); |
3132 | |
|
3133 | 0 | result = -1; |
3134 | 0 | } |
3135 | 0 | data_offset += 16; |
3136 | 0 | } |
3137 | 0 | return( result ); |
3138 | 0 | } |
3139 | | |
3140 | | #endif /* defined( HAVE_LIBCRYPTO ) && defined( HAVE_OPENSSL_AES_H ) && defined( HAVE_AES_ECB_ENCRYPT ) */ |
3141 | | |