/src/mbedtls/library/aesni.h

Source (jump to first uncovered line)
/**
 * \file aesni.h
 *
 * \brief AES-NI for hardware AES acceleration on some Intel processors
 *
 * \warning These functions are only for internal use by other library
 *          functions; you must not call them directly.
 */
/*
 *  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may
 *  not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
#ifndef MBEDTLS_AESNI_H
#define MBEDTLS_AESNI_H

#include "mbedtls/build_info.h"

#include "mbedtls/aes.h"

#define MBEDTLS_AESNI_AES      0x02000000u
#define MBEDTLS_AESNI_CLMUL    0x00000002u

#if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) &&  \
    (defined(__amd64__) || defined(__x86_64__))   &&  \
    !defined(MBEDTLS_HAVE_X86_64)
#define MBEDTLS_HAVE_X86_64
#endif

#if defined(MBEDTLS_HAVE_X86_64)

#ifdef __cplusplus
extern "C" {
#endif

/**
 * \brief          Internal function to detect the AES-NI feature in CPUs.
 *
 * \note           This function is only for internal use by other library
 *                 functions; you must not call it directly.
 *
 * \param what     The feature to detect
 *                 (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL)
 *
 * \return         1 if CPU has support for the feature, 0 otherwise
 */
int mbedtls_aesni_has_support(unsigned int what);

/**
 * \brief          Internal AES-NI AES-ECB block encryption and decryption
 *
 * \note           This function is only for internal use by other library
 *                 functions; you must not call it directly.
 *
 * \param ctx      AES context
 * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
 * \param input    16-byte input block
 * \param output   16-byte output block
 *
 * \return         0 on success (cannot fail)
 */
int mbedtls_aesni_crypt_ecb(mbedtls_aes_context *ctx,
                            int mode,
                            const unsigned char input[16],
                            unsigned char output[16]);

/**
 * \brief          Internal GCM multiplication: c = a * b in GF(2^128)
 *
 * \note           This function is only for internal use by other library
 *                 functions; you must not call it directly.
 *
 * \param c        Result
 * \param a        First operand
 * \param b        Second operand
 *
 * \note           Both operands and result are bit strings interpreted as
 *                 elements of GF(2^128) as per the GCM spec.
 */
void mbedtls_aesni_gcm_mult(unsigned char c[16],
                            const unsigned char a[16],
                            const unsigned char b[16]);

/**
 * \brief           Internal round key inversion. This function computes
 *                  decryption round keys from the encryption round keys.
 *
 * \note            This function is only for internal use by other library
 *                  functions; you must not call it directly.
 *
 * \param invkey    Round keys for the equivalent inverse cipher
 * \param fwdkey    Original round keys (for encryption)
 * \param nr        Number of rounds (that is, number of round keys minus one)
 */
void mbedtls_aesni_inverse_key(unsigned char *invkey,
                               const unsigned char *fwdkey,
                               int nr);

/**
 * \brief           Internal key expansion for encryption
 *
 * \note            This function is only for internal use by other library
 *                  functions; you must not call it directly.
 *
 * \param rk        Destination buffer where the round keys are written
 * \param key       Encryption key
 * \param bits      Key size in bits (must be 128, 192 or 256)
 *
 * \return          0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
 */
int mbedtls_aesni_setkey_enc(unsigned char *rk,
                             const unsigned char *key,
                             size_t bits);

#ifdef __cplusplus
}
#endif

#endif /* MBEDTLS_HAVE_X86_64 */

#endif /* MBEDTLS_AESNI_H */

Line	Count	Source (jump to first uncovered line)
1		/**
2		* \file aesni.h
3		*
4		* \brief AES-NI for hardware AES acceleration on some Intel processors
5		*
6		* \warning These functions are only for internal use by other library
7		* functions; you must not call them directly.
8		*/
9		/*
10		* Copyright The Mbed TLS Contributors
11		* SPDX-License-Identifier: Apache-2.0
12		*
13		* Licensed under the Apache License, Version 2.0 (the "License"); you may
14		* not use this file except in compliance with the License.
15		* You may obtain a copy of the License at
16		*
17		* http://www.apache.org/licenses/LICENSE-2.0
18		*
19		* Unless required by applicable law or agreed to in writing, software
20		* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
21		* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22		* See the License for the specific language governing permissions and
23		* limitations under the License.
24		*/
25		#ifndef MBEDTLS_AESNI_H
26		#define MBEDTLS_AESNI_H
27
28		#include "mbedtls/build_info.h"
29
30		#include "mbedtls/aes.h"
31
32	963k	#define MBEDTLS_AESNI_AES 0x02000000u
33	0	#define MBEDTLS_AESNI_CLMUL 0x00000002u
34
35		#if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && \
36		(defined(__amd64__) \|\| defined(__x86_64__)) && \
37		!defined(MBEDTLS_HAVE_X86_64)
38		#define MBEDTLS_HAVE_X86_64
39		#endif
40
41		#if defined(MBEDTLS_HAVE_X86_64)
42
43		#ifdef __cplusplus
44		extern "C" {
45		#endif
46
47		/**
48		* \brief Internal function to detect the AES-NI feature in CPUs.
49		*
50		* \note This function is only for internal use by other library
51		* functions; you must not call it directly.
52		*
53		* \param what The feature to detect
54		* (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL)
55		*
56		* \return 1 if CPU has support for the feature, 0 otherwise
57		*/
58		int mbedtls_aesni_has_support(unsigned int what);
59
60		/**
61		* \brief Internal AES-NI AES-ECB block encryption and decryption
62		*
63		* \note This function is only for internal use by other library
64		* functions; you must not call it directly.
65		*
66		* \param ctx AES context
67		* \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
68		* \param input 16-byte input block
69		* \param output 16-byte output block
70		*
71		* \return 0 on success (cannot fail)
72		*/
73		int mbedtls_aesni_crypt_ecb(mbedtls_aes_context *ctx,
74		int mode,
75		const unsigned char input[16],
76		unsigned char output[16]);
77
78		/**
79		* \brief Internal GCM multiplication: c = a * b in GF(2^128)
80		*
81		* \note This function is only for internal use by other library
82		* functions; you must not call it directly.
83		*
84		* \param c Result
85		* \param a First operand
86		* \param b Second operand
87		*
88		* \note Both operands and result are bit strings interpreted as
89		* elements of GF(2^128) as per the GCM spec.
90		*/
91		void mbedtls_aesni_gcm_mult(unsigned char c[16],
92		const unsigned char a[16],
93		const unsigned char b[16]);
94
95		/**
96		* \brief Internal round key inversion. This function computes
97		* decryption round keys from the encryption round keys.
98		*
99		* \note This function is only for internal use by other library
100		* functions; you must not call it directly.
101		*
102		* \param invkey Round keys for the equivalent inverse cipher
103		* \param fwdkey Original round keys (for encryption)
104		* \param nr Number of rounds (that is, number of round keys minus one)
105		*/
106		void mbedtls_aesni_inverse_key(unsigned char *invkey,
107		const unsigned char *fwdkey,
108		int nr);
109
110		/**
111		* \brief Internal key expansion for encryption
112		*
113		* \note This function is only for internal use by other library
114		* functions; you must not call it directly.
115		*
116		* \param rk Destination buffer where the round keys are written
117		* \param key Encryption key
118		* \param bits Key size in bits (must be 128, 192 or 256)
119		*
120		* \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
121		*/
122		int mbedtls_aesni_setkey_enc(unsigned char *rk,
123		const unsigned char *key,
124		size_t bits);
125
126		#ifdef __cplusplus
127		}
128		#endif
129
130		#endif /* MBEDTLS_HAVE_X86_64 */
131
132		#endif /* MBEDTLS_AESNI_H */

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Created: 2024-05-15 07:12