X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=hmac-sha256.h;h=0334a7d8a4da13c5e76b0de79a3ce963c2764d20;hb=17332291e15183d71d88ed868275e3cb53917180;hp=9bdd560d0432ffb60df33f4f87774ef31ee61ff5;hpb=38806fc75038026e167a26eff90b6111066a3642;p=avr-crypto-lib.git

diff --git a/hmac-sha256.h b/hmac-sha256.h
index 9bdd560..0334a7d 100644
--- a/hmac-sha256.h
+++ b/hmac-sha256.h
@@ -1,17 +1,35 @@
+/* hmac-sha256.h */
+/*
+    This file is part of the 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_BYTES ((HMAC_BITS+7)/8)
 
 typedef sha256_ctx_t hmac_sha256_ctx_t;
 
 
-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_init(hmac_sha256_ctx_t *s, void* key, uint16_t keylength_b);
+void hmac_sha256_final(hmac_sha256_ctx_t *s, void* key, uint16_t keylength_b);
+void hmac_sha256(void* dest, void* key, uint16_t keylength_b, void* msg, uint64_t msglength_b);
 
 
 #endif /*HMACSHA256_H_*/