Mbed TLS v3.5.2
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aes.h
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1
23/*
24 * Copyright The Mbed TLS Contributors
25 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
26 */
27
28#ifndef MBEDTLS_AES_H
29#define MBEDTLS_AES_H
31
32#include "mbedtls/build_info.h"
34
35#include <stddef.h>
36#include <stdint.h>
37
38/* padlock.c and aesni.c rely on these values! */
39#define MBEDTLS_AES_ENCRYPT 1
40#define MBEDTLS_AES_DECRYPT 0
42/* Error codes in range 0x0020-0x0022 */
44#define MBEDTLS_ERR_AES_INVALID_KEY_LENGTH -0x0020
46#define MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH -0x0022
47
48/* Error codes in range 0x0021-0x0025 */
50#define MBEDTLS_ERR_AES_BAD_INPUT_DATA -0x0021
51
52#ifdef __cplusplus
53extern "C" {
54#endif
55
56#if !defined(MBEDTLS_AES_ALT)
57// Regular implementation
58//
59
63typedef struct mbedtls_aes_context {
65 size_t MBEDTLS_PRIVATE(rk_offset);
67#if defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) && !defined(MBEDTLS_PADLOCK_C)
68 uint32_t MBEDTLS_PRIVATE(buf)[44];
70#else
71 uint32_t MBEDTLS_PRIVATE(buf)[68];
79#endif /* MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH && !MBEDTLS_PADLOCK_C */
80}
82
83#if defined(MBEDTLS_CIPHER_MODE_XTS)
93#endif /* MBEDTLS_CIPHER_MODE_XTS */
94
95#else /* MBEDTLS_AES_ALT */
96#include "aes_alt.h"
97#endif /* MBEDTLS_AES_ALT */
98
108
117
118#if defined(MBEDTLS_CIPHER_MODE_XTS)
128
137#endif /* MBEDTLS_CIPHER_MODE_XTS */
138
155int mbedtls_aes_setkey_enc(mbedtls_aes_context *ctx, const unsigned char *key,
156 unsigned int keybits);
157
174int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key,
175 unsigned int keybits);
176
177#if defined(MBEDTLS_CIPHER_MODE_XTS)
196 const unsigned char *key,
197 unsigned int keybits);
198
217 const unsigned char *key,
218 unsigned int keybits);
219#endif /* MBEDTLS_CIPHER_MODE_XTS */
220
246 int mode,
247 const unsigned char input[16],
248 unsigned char output[16]);
249
250#if defined(MBEDTLS_CIPHER_MODE_CBC)
294 int mode,
295 size_t length,
296 unsigned char iv[16],
297 const unsigned char *input,
298 unsigned char *output);
299#endif /* MBEDTLS_CIPHER_MODE_CBC */
300
301#if defined(MBEDTLS_CIPHER_MODE_XTS)
339 int mode,
340 size_t length,
341 const unsigned char data_unit[16],
342 const unsigned char *input,
343 unsigned char *output);
344#endif /* MBEDTLS_CIPHER_MODE_XTS */
345
346#if defined(MBEDTLS_CIPHER_MODE_CFB)
388 int mode,
389 size_t length,
390 size_t *iv_off,
391 unsigned char iv[16],
392 const unsigned char *input,
393 unsigned char *output);
394
433 int mode,
434 size_t length,
435 unsigned char iv[16],
436 const unsigned char *input,
437 unsigned char *output);
438#endif /*MBEDTLS_CIPHER_MODE_CFB */
439
440#if defined(MBEDTLS_CIPHER_MODE_OFB)
488 size_t length,
489 size_t *iv_off,
490 unsigned char iv[16],
491 const unsigned char *input,
492 unsigned char *output);
493
494#endif /* MBEDTLS_CIPHER_MODE_OFB */
495
496#if defined(MBEDTLS_CIPHER_MODE_CTR)
571 size_t length,
572 size_t *nc_off,
573 unsigned char nonce_counter[16],
574 unsigned char stream_block[16],
575 const unsigned char *input,
576 unsigned char *output);
577#endif /* MBEDTLS_CIPHER_MODE_CTR */
578
592 const unsigned char input[16],
593 unsigned char output[16]);
594
608 const unsigned char input[16],
609 unsigned char output[16]);
610
611#if defined(MBEDTLS_SELF_TEST)
619int mbedtls_aes_self_test(int verbose);
620
621#endif /* MBEDTLS_SELF_TEST */
622
623#ifdef __cplusplus
624}
625#endif
626
627#endif /* aes.h */
int mbedtls_aes_crypt_ecb(mbedtls_aes_context *ctx, int mode, const unsigned char input[16], unsigned char output[16])
This function performs an AES single-block encryption or decryption operation.
int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key, unsigned int keybits)
This function sets the decryption key.
int mbedtls_aes_self_test(int verbose)
Checkup routine.
void mbedtls_aes_xts_init(mbedtls_aes_xts_context *ctx)
This function initializes the specified AES XTS context.
int mbedtls_aes_crypt_ofb(mbedtls_aes_context *ctx, size_t length, size_t *iv_off, unsigned char iv[16], const unsigned char *input, unsigned char *output)
This function performs an AES-OFB (Output Feedback Mode) encryption or decryption operation.
int mbedtls_aes_crypt_cbc(mbedtls_aes_context *ctx, int mode, size_t length, unsigned char iv[16], const unsigned char *input, unsigned char *output)
This function performs an AES-CBC encryption or decryption operation on full blocks.
int mbedtls_aes_crypt_ctr(mbedtls_aes_context *ctx, size_t length, size_t *nc_off, unsigned char nonce_counter[16], unsigned char stream_block[16], const unsigned char *input, unsigned char *output)
This function performs an AES-CTR encryption or decryption operation.
int mbedtls_aes_xts_setkey_dec(mbedtls_aes_xts_context *ctx, const unsigned char *key, unsigned int keybits)
This function prepares an XTS context for decryption and sets the decryption key.
int mbedtls_aes_crypt_xts(mbedtls_aes_xts_context *ctx, int mode, size_t length, const unsigned char data_unit[16], const unsigned char *input, unsigned char *output)
This function performs an AES-XTS encryption or decryption operation for an entire XTS data unit.
int mbedtls_internal_aes_encrypt(mbedtls_aes_context *ctx, const unsigned char input[16], unsigned char output[16])
Internal AES block encryption function. This is only exposed to allow overriding it using MBEDTLS_AES...
struct mbedtls_aes_xts_context mbedtls_aes_xts_context
The AES XTS context-type definition.
void mbedtls_aes_xts_free(mbedtls_aes_xts_context *ctx)
This function releases and clears the specified AES XTS context.
int mbedtls_aes_crypt_cfb128(mbedtls_aes_context *ctx, int mode, size_t length, size_t *iv_off, unsigned char iv[16], const unsigned char *input, unsigned char *output)
This function performs an AES-CFB128 encryption or decryption operation.
int mbedtls_aes_crypt_cfb8(mbedtls_aes_context *ctx, int mode, size_t length, unsigned char iv[16], const unsigned char *input, unsigned char *output)
This function performs an AES-CFB8 encryption or decryption operation.
void mbedtls_aes_init(mbedtls_aes_context *ctx)
This function initializes the specified AES context.
struct mbedtls_aes_context mbedtls_aes_context
The AES context-type definition.
int mbedtls_aes_setkey_enc(mbedtls_aes_context *ctx, const unsigned char *key, unsigned int keybits)
This function sets the encryption key.
void mbedtls_aes_free(mbedtls_aes_context *ctx)
This function releases and clears the specified AES context.
int mbedtls_internal_aes_decrypt(mbedtls_aes_context *ctx, const unsigned char input[16], unsigned char output[16])
Internal AES block decryption function. This is only exposed to allow overriding it using see MBEDTLS...
int mbedtls_aes_xts_setkey_enc(mbedtls_aes_xts_context *ctx, const unsigned char *key, unsigned int keybits)
This function prepares an XTS context for encryption and sets the encryption key.
Build-time configuration info.
Common and shared functions used by multiple modules in the Mbed TLS library.
#define MBEDTLS_CHECK_RETURN_TYPICAL
#define MBEDTLS_CHECK_RETURN_CRITICAL
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)
The AES context-type definition.
Definition aes.h:63
The AES XTS context-type definition.
Definition aes.h:87