adding salsa20

[arm-crypto-lib.git] / salsa20 / salsa20.h

diff --git a/salsa20/salsa20.h b/salsa20/salsa20.h
new file mode 100644 (file)
index 0000000..29e7e81
--- /dev/null
+++ b/salsa20/salsa20.h
@@ -0,0 +1,40 @@
+/* salsa20.h */
+/*
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2011 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 SALSA20_H_
+#define SALSA20_H_
+
+#include <stdint.h>
+
+typedef struct{
+       uint8_t a[64];
+       uint8_t buffer[64];
+       uint8_t buffer_idx;
+} salsa20_ctx_t;
+
+void salsa20_hash(uint32_t* a);
+void salsa_k32(uint32_t* dest, const uint32_t* k, const uint32_t* n);
+void salsa_k16(uint32_t* dest, const uint32_t* k, const uint32_t* n);
+void salsa20_genBlock256(void* dest, const void* k, const void* iv, uint64_t i);
+void salsa20_genBlock128(void* dest, const void* k, const void* iv, uint64_t i);
+
+void salsa20_init(void* key, uint16_t keylength_b, void* iv, salsa20_ctx_t* ctx);
+uint8_t salsa20_gen(salsa20_ctx_t* ctx);
+
+#endif /* SALSA20_H_ */