X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=hmac-sha256.h;h=4df6af5e93f37f8fefd6f7a0de88e6705b30c006;hb=53f8a8d7ca5c03120224128e1f8552c99f6af11e;hp=9bdd560d0432ffb60df33f4f87774ef31ee61ff5;hpb=38806fc75038026e167a26eff90b6111066a3642;p=avr-crypto-lib.git

diff --git a/hmac-sha256.h b/hmac-sha256.h
index 9bdd560..4df6af5 100644
--- a/hmac-sha256.h
+++ b/hmac-sha256.h
@@ -1,17 +1,43 @@
+/* hmac-sha256.h */
+/*
+    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/>.
+*/
 #ifndef HMACSHA256_H_
 #define HMACSHA256_H_
 
 #include "sha256.h"
 
-#define HMAC_BITS SHA256_HASH_BITS
-#define HMAC_BYTES (HMAC_BITS/8)
+#define HMAC_SHA256_BITS        SHA256_HASH_BITS
+#define HMAC_SHA256_BYTES       SHA256_HASH_BYTES
+#define HMAC_SHA256_BLOCK_BITS  SHA256_BLOCK_BITS
+#define HMAC_SHA256_BLOCK_BYTES SHA256_BLOCK_BYTES
+
+
+typedef struct {
+	sha256_ctx_t a,b;
+} hmac_sha256_ctx_t;
 
-typedef sha256_ctx_t hmac_sha256_ctx_t;
 
+void hmac_sha256_init(hmac_sha256_ctx_t *s, const void* key, uint16_t keylength_b);
+void hmac_sha256_nextBlock(hmac_sha256_ctx_t *s, const void* block);
+void hmac_sha256_lastBlock(hmac_sha256_ctx_t *s, const void* block, uint16_t length_b);
+void hmac_sha256_final(void* dest, hmac_sha256_ctx_t *s);
 
-void hmac_sha256_init(hmac_sha256_ctx_t *s, void* key, uint16_t kl);
-void hmac_sha256_final(hmac_sha256_ctx_t *s, void* key, uint16_t kl);
-void hmac_sha256(void* dest, void* key, uint16_t kl, void* msg, uint64_t ml);
+void hmac_sha256(void* dest, const void* key, uint16_t keylength_b, const void* msg, uint32_t msglength_b);
 
 
 #endif /*HMACSHA256_H_*/