+/* sha1.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
/**
* \file sha1.c
* \author Daniel Otte
- * \date 08.10.2006
- * \par License:
- * GPL
+ * \date 2006-10-08
+ * \license GPLv3 or later
* \brief SHA-1 implementation.
*
*/
typedef uint32_t (*pf_t)(uint32_t x, uint32_t y, uint32_t z);
-void sha1_nextBlock (sha1_ctx_t *state, void* block){
+void sha1_nextBlock (sha1_ctx_t *state, const void* block){
uint32_t a[5];
uint32_t w[16];
uint32_t temp;
/********************************************************************************************************/
-void sha1_lastBlock(sha1_ctx_t *state, void* block, uint16_t length){
+void sha1_lastBlock(sha1_ctx_t *state, const void* block, uint16_t length){
uint8_t lb[SHA1_BLOCK_BITS/8]; /* local block */
state->length += length;
memcpy (&(lb[0]), block, length/8);
/* set the final one bit */
- if (length & 0x3){ /* if we have single bits at the end */
+ if (length & 0x7){ /* if we have single bits at the end */
lb[length/8] = ((uint8_t*)(block))[length/8];
} else {
lb[length/8] = 0;
}
lb[length/8] |= 0x80>>(length & 0x3);
- length =(length >> 3) + 1; /* from now on length contains the number of BYTES in lb*/
+ length =(length >> 7) + 1; /* from now on length contains the number of BYTES in lb*/
/* pad with zeros */
if (length>64-8){ /* not enouth space for 64bit length value */
memset((void*)(&(lb[length])), 0, 64-length);
*
*
*/
-void sha1 (sha1_hash_t *dest, void* msg, uint32_t length){
+void sha1 (sha1_hash_t *dest, const void* msg, uint32_t length){
sha1_ctx_t s;
DEBUG_S("\r\nBLA BLUB");
sha1_init(&s);
while(length & (~0x0001ff)){ /* length>=512 */
DEBUG_S("\r\none block");
sha1_nextBlock(&s, msg);
- msg += SHA1_BLOCK_BITS/8; /* increment pointer to next block */
+ msg = (uint8_t*)msg + SHA1_BLOCK_BITS/8; /* increment pointer to next block */
length -= SHA1_BLOCK_BITS;
}
sha1_lastBlock(&s, msg, length);