diff --git a/rsa.h b/rsa.h
new file mode 100644
index 0000000..6aaabfa
--- /dev/null
+++ b/rsa.h
@@ -0,0 +1,36 @@
+/*
+
+rsa.h
+
+Author: Tatu Ylonen <ylo@cs.hut.fi>
+
+Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+                   All rights reserved
+
+Created: Fri Mar  3 22:01:06 1995 ylo
+
+RSA key generation, encryption and decryption.
+
+*/
+
+/* RCSID("$Id: rsa.h,v 1.1 1999/10/27 03:42:44 damien Exp $"); */
+
+#ifndef RSA_H
+#define RSA_H
+
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+
+/* Calls SSL RSA_generate_key, only copies to prv and pub */
+void rsa_generate_key(RSA *prv, RSA *pub, unsigned int bits);
+
+/* Indicates whether the rsa module is permitted to show messages on
+   the terminal. */
+void rsa_set_verbose __P((int verbose));
+
+int  rsa_alive __P((void));
+
+void rsa_public_encrypt __P((BIGNUM *out, BIGNUM *in, RSA *prv));
+void rsa_private_decrypt __P((BIGNUM *out, BIGNUM *in, RSA *prv));
+
+#endif /* RSA_H */