NimBLE-Arduino 2.1.2
Loading...
Searching...
No Matches
aes.h
Go to the documentation of this file.
1/* aes.h - TinyCrypt interface to an AES-128 implementation */
2
3/*
4 * Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * - Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * - Neither the name of Intel Corporation nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
49#ifndef __TC_AES_H__
50#define __TC_AES_H__
51
52#include <stdint.h>
53
54#ifdef __cplusplus
55extern "C" {
56#endif
57
58#define Nb (4) /* number of columns (32-bit words) comprising the state */
59#define Nk (4) /* number of 32-bit words comprising the key */
60#define Nr (10) /* number of rounds */
61#define TC_AES_BLOCK_SIZE (Nb*Nk)
62#define TC_AES_KEY_SIZE (Nb*Nk)
63
64typedef struct tc_aes_key_sched_struct {
65 unsigned int words[Nb*(Nr+1)];
66} *TCAesKeySched_t;
67
79int tc_aes128_set_encrypt_key(TCAesKeySched_t s, const uint8_t *k);
80
93int tc_aes_encrypt(uint8_t *out, const uint8_t *in,
94 const TCAesKeySched_t s);
95
110int tc_aes128_set_decrypt_key(TCAesKeySched_t s, const uint8_t *k);
111
123int tc_aes_decrypt(uint8_t *out, const uint8_t *in,
124 const TCAesKeySched_t s);
125
126#ifdef __cplusplus
127}
128#endif
129
130#endif /* __TC_AES_H__ */
tc_aes_encrypt
int tc_aes_encrypt(uint8_t *out, const uint8_t *in, const TCAesKeySched_t s)
AES-128 Encryption procedure Encrypts contents of in buffer into out buffer under key; schedule s.
Definition aes_encrypt.c:158
tc_aes128_set_decrypt_key
int tc_aes128_set_decrypt_key(TCAesKeySched_t s, const uint8_t *k)
Set the AES-128 decryption key Uses key k to initialize s.
Definition aes_decrypt.c:62
tc_aes_decrypt
int tc_aes_decrypt(uint8_t *out, const uint8_t *in, const TCAesKeySched_t s)
AES-128 Encryption procedure Decrypts in buffer into out buffer under key schedule s.
Definition aes_decrypt.c:129
tc_aes128_set_encrypt_key
int tc_aes128_set_encrypt_key(TCAesKeySched_t s, const uint8_t *k)
Set AES-128 encryption key Uses key k to initialize s.
Definition aes_encrypt.c:70