modified structure

[avr-crypto-lib.git] / hmac-sha1.c

diff --git a/hmac-sha1.c b/hmac-sha1.c
deleted file mode 100644 (file)
index 56d90ac..0000000
--- a/hmac-sha1.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/* hmac-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/>.
-*/
-/**
- * 
- * implementation of HMAC as described in RFC2104
- * Author:      Daniel Otte
- * email:       daniel.otte@rub.de
- * License:     GPLv3 or later
- **/
-
-/* 
- * hmac = hash ( k^opad , hash( k^ipad  , msg))
- */
-
-#include <stdint.h>
-#include <string.h>
-#include "config.h"
-#include "sha1.h"
-#include "hmac-sha1.h"
-
-#define IPAD 0x36
-#define OPAD 0x5C
-
-
-#ifndef HMAC_SHORTONLY
-
-void hmac_sha1_init(hmac_sha1_ctx_t *s, const void* key, uint16_t keylength_b){
-       uint8_t buffer[SHA1_BLOCK_BYTES];
-       uint8_t i;
-       
-       memset(buffer, 0, SHA1_BLOCK_BYTES);
-       if (keylength_b > SHA1_BLOCK_BITS){
-               sha1((void*)buffer, key, keylength_b);
-       } else {
-               memcpy(buffer, key, (keylength_b+7)/8);
-       }
-       
-       for (i=0; i<SHA1_BLOCK_BYTES; ++i){
-               buffer[i] ^= IPAD;
-       }
-       sha1_init(&(s->a));
-       sha1_nextBlock(&(s->a), buffer);
-       
-       for (i=0; i<SHA1_BLOCK_BYTES; ++i){
-               buffer[i] ^= IPAD^OPAD;
-       }
-       sha1_init(&(s->b));
-       sha1_nextBlock(&(s->b), buffer);
-       
-       
-#if defined SECURE_WIPE_BUFFER
-       memset(buffer, 0, SHA1_BLOCK_BYTES);
-#endif
-}
-
-void hmac_sha1_nextBlock(hmac_sha1_ctx_t *s, const void* block){
-       sha1_nextBlock(&(s->a), block);
-}
-void hmac_sha1_lastBlock(hmac_sha1_ctx_t *s, const void* block, uint16_t length_b){
-       while(length_b>=SHA1_BLOCK_BITS){
-               sha1_nextBlock(&(s->a), block);
-               block = (uint8_t*)block + SHA1_BLOCK_BYTES;
-               length_b -= SHA1_BLOCK_BITS;
-       }
-       sha1_lastBlock(&(s->a), block, length_b);
-}
-
-void hmac_sha1_final(void* dest, hmac_sha1_ctx_t *s){
-       sha1_ctx2hash((sha1_hash_t*)dest, &(s->a));
-       sha1_lastBlock(&(s->b), dest, SHA1_HASH_BITS);
-       sha1_ctx2hash((sha1_hash_t*)dest, &(s->b));
-}
-
-#endif
-
-/*
- * keylength in bits!
- * message length in bits!
- */
-void hmac_sha1(void* dest, const void* key, uint16_t keylength_b, const void* msg, uint32_t msglength_b){ /* a one-shot*/
-       sha1_ctx_t s;
-       uint8_t i;
-       uint8_t buffer[SHA1_BLOCK_BYTES];
-       
-       memset(buffer, 0, SHA1_BLOCK_BYTES);
-       
-       /* if key is larger than a block we have to hash it*/
-       if (keylength_b > SHA1_BLOCK_BITS){
-               sha1((void*)buffer, key, keylength_b);
-       } else {
-               memcpy(buffer, key, (keylength_b+7)/8);
-       }
-       
-       for (i=0; i<SHA1_BLOCK_BYTES; ++i){
-               buffer[i] ^= IPAD;
-       }
-       sha1_init(&s);
-       sha1_nextBlock(&s, buffer);
-       while (msglength_b >= SHA1_BLOCK_BITS){
-               sha1_nextBlock(&s, msg);
-               msg = (uint8_t*)msg + SHA1_BLOCK_BYTES;
-               msglength_b -=  SHA1_BLOCK_BITS;
-       }
-       sha1_lastBlock(&s, msg, msglength_b);
-       /* since buffer still contains key xor ipad we can do ... */
-       for (i=0; i<SHA1_BLOCK_BYTES; ++i){
-               buffer[i] ^= IPAD ^ OPAD;
-       }
-       sha1_ctx2hash(dest, &s); /* save inner hash temporary to dest */
-       sha1_init(&s);
-       sha1_nextBlock(&s, buffer);
-       sha1_lastBlock(&s, dest, SHA1_HASH_BITS);
-       sha1_ctx2hash(dest, &s);
-}
-