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[avr-crypto-lib.git] / grain / grain.h

diff --git a/grain/grain.h b/grain/grain.h
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+/* grain.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/>.
+*/
+
+/** \file grain.h
+ * \author  Daniel Otte
+ * \email   daniel.otte@rub.de
+ * \license GPLv3 or later
+ * \brief implementation of the Grain streamcipher
+ */
+
+#ifndef GRAIN_H_
+#define GRAIN_H_
+
+
+#include <stdint.h>
+
+typedef struct gain_ctx_st{
+       uint8_t lfsr[10];
+       uint8_t nfsr[10];
+} grain_ctx_t;
+
+
+uint8_t grain_enc(grain_ctx_t* ctx);
+void grain_init(const void* key, const void* iv, grain_ctx_t* ctx);
+
+#endif /*GRAIN_H_*/