Initial commit

inc/crypt_utils.h

@@ -0,0 +1,11 @@
+#ifndef CRYPT_UTILS_H
+#define CRYPT_UTILS_H
+
+#include "../lib/big.h"
+#include "key_utils.h"
+
+void big_pow_mod(big_n a, big_n b, big_n n, big_n result);
+void encrypt(public_key pub_key, big_n input, big_n output);
+void decrypt(private_key priv_key, big_n input, big_n output);
+
+#endif

inc/key_utils.h

@@ -0,0 +1,20 @@
+#ifndef KEY_UTILS_H
+#define KEY_UTILS_H
+
+#include "../lib/big.h"
+
+typedef struct {
+	big_n n;
+	big_n e;
+	big_n d;
+} private_key;
+
+typedef struct {
+	big_n n;
+	big_n e;
+} public_key;
+
+private_key private_key_read(const char *file);
+public_key public_key_read(const char *file);
+
+#endif