adding RSA

[avr-crypto-lib.git] / rsa / rsa.c

diff --git a/rsa/rsa.c b/rsa/rsa.c
new file mode 100644 (file)
index 0000000..0281c7e
--- /dev/null
+++ b/rsa/rsa.c
@@ -0,0 +1,36 @@
+/* rsa_enc.c */
+/*
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2010 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/>.
+*/
+
+#include <stdint.h>
+#include "cli.h"
+#include "bigint/bigint.h"
+#include "rsa.h"
+
+uint8_t rsa_enc_bigint(bigint_t* c, const bigint_t* m,
+                               const rsa_ctx_t* ctx){
+       bigint_expmod_u(c, m, &(ctx->pubexp), &(ctx->modulus));
+       return 0;
+}
+
+uint8_t rsa_dec_bigint(bigint_t* m, const bigint_t* c,
+                               const rsa_ctx_t* ctx){
+       bigint_expmod_u(m, c, &(ctx->privexp), &(ctx->modulus));
+       return 0;
+}
+