mbed TLS v2.28.3
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aesni.h
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1
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#if !defined(MBEDTLS_CONFIG_FILE)
29#include "mbedtls/config.h"
30#else
31#include MBEDTLS_CONFIG_FILE
32#endif
33
34#include "mbedtls/aes.h"
35
36#define MBEDTLS_AESNI_AES 0x02000000u
37#define MBEDTLS_AESNI_CLMUL 0x00000002u
38
39/* Can we do AESNI with inline assembly?
40 * (Only implemented with gas syntax, only for 64-bit.)
41 */
42#if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && \
43 (defined(__amd64__) || defined(__x86_64__)) && \
44 !defined(MBEDTLS_HAVE_X86_64)
45#define MBEDTLS_HAVE_X86_64
46#endif
47
48#if defined(MBEDTLS_AESNI_C)
49
50/* Can we do AESNI with intrinsics?
51 * (Only implemented with certain compilers, only for certain targets.)
52 *
53 * NOTE: MBEDTLS_AESNI_HAVE_INTRINSICS and MBEDTLS_AESNI_HAVE_CODE are internal
54 * macros that may change in future releases.
55 */
56#undef MBEDTLS_AESNI_HAVE_INTRINSICS
57#if defined(_MSC_VER)
58/* Visual Studio supports AESNI intrinsics since VS 2008 SP1. We only support
59 * VS 2013 and up for other reasons anyway, so no need to check the version. */
60#define MBEDTLS_AESNI_HAVE_INTRINSICS
61#endif
62/* GCC-like compilers: currently, we only support intrinsics if the requisite
63 * target flag is enabled when building the library (e.g. `gcc -mpclmul -msse2`
64 * or `clang -maes -mpclmul`). */
65#if defined(__GNUC__) && defined(__AES__) && defined(__PCLMUL__)
66#define MBEDTLS_AESNI_HAVE_INTRINSICS
67#endif
68
69/* Choose the implementation of AESNI, if one is available. */
70#undef MBEDTLS_AESNI_HAVE_CODE
71/* To minimize disruption when releasing the intrinsics-based implementation,
72 * favor the assembly-based implementation if it's available. We intend to
73 * revise this in a later release of Mbed TLS 3.x. In the long run, we will
74 * likely remove the assembly implementation. */
75#if defined(MBEDTLS_HAVE_X86_64)
76#define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
77#elif defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
78#define MBEDTLS_AESNI_HAVE_CODE 2 // via intrinsics
79#endif
80
81#if defined(MBEDTLS_AESNI_HAVE_CODE)
82
83#ifdef __cplusplus
84extern "C" {
85#endif
86
98int mbedtls_aesni_has_support(unsigned int what);
99
113int mbedtls_aesni_crypt_ecb(mbedtls_aes_context *ctx,
114 int mode,
115 const unsigned char input[16],
116 unsigned char output[16]);
117
131void mbedtls_aesni_gcm_mult(unsigned char c[16],
132 const unsigned char a[16],
133 const unsigned char b[16]);
134
146void mbedtls_aesni_inverse_key(unsigned char *invkey,
147 const unsigned char *fwdkey,
148 int nr);
149
162int mbedtls_aesni_setkey_enc(unsigned char *rk,
163 const unsigned char *key,
164 size_t bits);
165
166#ifdef __cplusplus
167}
168#endif
169
170#endif /* MBEDTLS_AESNI_HAVE_CODE */
171#endif /* MBEDTLS_AESNI_C */
172
173#endif /* MBEDTLS_AESNI_H */
This file contains AES definitions and functions.
Configuration options (set of defines)
The AES context-type definition.
Definition: aes.h:91