mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-04 21:48:17 +00:00
32bda8d1d9
The old implementation needed 6 sha transformations per iterations: - 2 for computing sha512 of seed, - 2 for computing digests of ipads/opads, - 2 for computing digests of intermediate hashes. The first 4 transformations are the same in every iteration so we cache them. A new function hmac_sha512_prepare computes these digests. We made sha512_Transform visible in pbkdf2 and prevent unneccessary big/little endian conversions back and forth.
53 lines
2.4 KiB
C
53 lines
2.4 KiB
C
/**
|
|
* Copyright (c) 2013-2014 Tomas Dzetkulic
|
|
* Copyright (c) 2013-2014 Pavol Rusnak
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT HMAC_SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
|
|
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __HMAC_H__
|
|
#define __HMAC_H__
|
|
|
|
#include <stdint.h>
|
|
#include "sha2.h"
|
|
|
|
typedef struct _HMAC_SHA256_CTX {
|
|
uint8_t o_key_pad[SHA256_BLOCK_LENGTH];
|
|
SHA256_CTX ctx;
|
|
} HMAC_SHA256_CTX;
|
|
|
|
typedef struct _HMAC_SHA512_CTX {
|
|
uint8_t o_key_pad[SHA512_BLOCK_LENGTH];
|
|
SHA512_CTX ctx;
|
|
} HMAC_SHA512_CTX;
|
|
|
|
void hmac_sha256_Init(HMAC_SHA256_CTX *hctx, const uint8_t *key, const uint32_t keylen);
|
|
void hmac_sha256_Update(HMAC_SHA256_CTX *hctx, const uint8_t *msg, const uint32_t msglen);
|
|
void hmac_sha256_Final(HMAC_SHA256_CTX *hctx, uint8_t *hmac);
|
|
void hmac_sha256(const uint8_t *key, const uint32_t keylen, const uint8_t *msg, const uint32_t msglen, uint8_t *hmac);
|
|
void hmac_sha256_prepare(const uint8_t *key, const uint32_t keylen, uint32_t *opad_digest, uint32_t *ipad_digest);
|
|
|
|
void hmac_sha512_Init(HMAC_SHA512_CTX *hctx, const uint8_t *key, const uint32_t keylen);
|
|
void hmac_sha512_Update(HMAC_SHA512_CTX *hctx, const uint8_t *msg, const uint32_t msglen);
|
|
void hmac_sha512_Final(HMAC_SHA512_CTX *hctx, uint8_t *hmac);
|
|
void hmac_sha512(const uint8_t *key, const uint32_t keylen, const uint8_t *msg, const uint32_t msglen, uint8_t *hmac);
|
|
void hmac_sha512_prepare(const uint8_t *key, const uint32_t keylen, uint64_t *opad_digest, uint64_t *ipad_digest);
|
|
|
|
#endif
|