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hasher: Initial commit

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Saleem Rashid 2017-12-09 14:38:25 +00:00 committed by Pavol Rusnak
parent bc7c66aa76
commit dd7b21a6ca
3 changed files with 114 additions and 0 deletions
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1
firmware/Makefile
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@ -20,6 +20,7 @@ OBJS += protect.o
OBJS += layout2.o
OBJS += recovery.o
OBJS += reset.o
OBJS += hasher.o
OBJS += signing.o
OBJS += crypto.o
OBJS += ethereum.o

63
firmware/hasher.c Normal file
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@ -0,0 +1,63 @@
/*
* This file is part of the TREZOR project, https://trezor.io/
*
* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "hasher.h"
void hasher_Init(Hasher *hasher, HasherType type) {
hasher->type = type;
switch (hasher->type) {
case HASHER_SHA2:
sha256_Init(&hasher->ctx.sha2);
break;
}
}
void hasher_Reset(Hasher *hasher) {
hasher_Init(hasher, hasher->type);
}
void hasher_Update(Hasher *hasher, const uint8_t *data, size_t length) {
switch (hasher->type) {
case HASHER_SHA2:
sha256_Update(&hasher->ctx.sha2, data, length);
break;
}
}
void hasher_Final(Hasher *hasher, uint8_t hash[HASHER_DIGEST_LENGTH]) {
switch (hasher->type) {
case HASHER_SHA2:
sha256_Final(&hasher->ctx.sha2, hash);
break;
}
}
void hasher_Double(Hasher *hasher, uint8_t hash[HASHER_DIGEST_LENGTH]) {
hasher_Final(hasher, hash);
hasher_Raw(hasher->type, hash, HASHER_DIGEST_LENGTH, hash);
}
void hasher_Raw(HasherType type, const uint8_t *data, size_t length, uint8_t hash[HASHER_DIGEST_LENGTH]) {
Hasher hasher;
hasher_Init(&hasher, type);
hasher_Update(&hasher, data, length);
hasher_Final(&hasher, hash);
}

50
firmware/hasher.h Normal file
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@ -0,0 +1,50 @@
/*
* This file is part of the TREZOR project, https://trezor.io/
*
* Copyright (C) 2017 Saleem Rashid <trezor@saleemrashid.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __HASHER_H__
#define __HASHER_H__
#include <stddef.h>
#include <stdint.h>
#include "sha2.h"
#define HASHER_DIGEST_LENGTH 32
typedef enum {
HASHER_SHA2,
} HasherType;
typedef struct {
HasherType type;
union {
SHA256_CTX sha2;
} ctx;
} Hasher;
void hasher_Init(Hasher *hasher, HasherType type);
void hasher_Reset(Hasher *hasher);
void hasher_Update(Hasher *hasher, const uint8_t *data, size_t length);
void hasher_Final(Hasher *hasher, uint8_t hash[HASHER_DIGEST_LENGTH]);
void hasher_Double(Hasher *hasher, uint8_t hash[HASHER_DIGEST_LENGTH]);
void hasher_Raw(HasherType type, const uint8_t *data, size_t length, uint8_t hash[HASHER_DIGEST_LENGTH]);
#endif