X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=serpent.h;h=f65d36f568dce5ba8f07ee2cb6838f78a63d5d57;hb=a75cfaf73ecb62448c0344e2842c61b178d84b7b;hp=e72178d6956b8e4bcfda804aa022af7f17a662bc;hpb=1bb58b2db7b71d44e4da7fd3f977a388c20e3b39;p=avr-crypto-lib.git
diff --git a/serpent.h b/serpent.h
index e72178d..f65d36f 100644
--- a/serpent.h
+++ b/serpent.h
@@ -1,7 +1,25 @@
-/* serpent.h
- * a bitsliced implementation of the serpent cipher for avr microcontrollers
- * author: Daniel Otte
- * license: GPLv3
+/* serpent.h */
+/*
+ This file is part of the Crypto-avr-lib/microcrypt-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 .
+*/
+/** \file serpent.h
+ * \author Daniel Otte
+ * \license GPLv3
+ * \brief a implementation of the serpent cipher for avr microcontrollers
*/
#ifndef SERPENT_H_
@@ -9,16 +27,21 @@
#include
-typedef uint8_t serpent_subkey_t[16];
+typedef uint32_t serpent_subkey_t[4];
typedef struct serpent_ctx_st {
serpent_subkey_t k[33];
} serpent_ctx_t;
+#define SERPENT_KEY128 128
+#define SERPENT_KEY192 192
+#define SERPENT_KEY256 256
+
+
/* key must be 256bit (32 byte) large! */
-void serpent_genctx(void * key, serpent_ctx_t * ctx);
-void serpent_enc(void * buffer, serpent_ctx_t * ctx);
-void serpent_dec(void * buffer, serpent_ctx_t * ctx);
+void serpent_init(const void* key, uint16_t keysize_b, serpent_ctx_t* ctx);
+void serpent_enc(void* buffer, const serpent_ctx_t* ctx);
+void serpent_dec(void* buffer, const serpent_ctx_t* ctx);
#endif /*SERPENT_H_*/