Move RSA key generation into the wrappers.

[tinc] / src / openssl / rsagen.c

diff --git a/src/openssl/rsagen.c b/src/openssl/rsagen.c
new file mode 100644 (file)
index 0000000..689e8a6
--- /dev/null
+++ b/src/openssl/rsagen.c
@@ -0,0 +1,85 @@
+/*
+    rsagen.c -- RSA key generation and export
+    Copyright (C) 2008 Guus Sliepen <guus@tinc-vpn.org>
+
+    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 2 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id$
+*/
+
+#include "system.h"
+
+#include <openssl/pem.h>
+#include <openssl/err.h>
+
+#include "logger.h"
+#include "rsagen.h"
+
+/* This function prettyprints the key generation process */
+
+static void indicator(int a, int b, void *p) {
+       switch (a) {
+               case 0:
+                       fprintf(stderr, ".");
+                       break;
+
+               case 1:
+                       fprintf(stderr, "+");
+                       break;
+
+               case 2:
+                       fprintf(stderr, "-");
+                       break;
+
+               case 3:
+                       switch (b) {
+                               case 0:
+                                       fprintf(stderr, " p\n");
+                                       break;
+
+                               case 1:
+                                       fprintf(stderr, " q\n");
+                                       break;
+
+                               default:
+                                       fprintf(stderr, "?");
+                       }
+                       break;
+
+               default:
+                       fprintf(stderr, "?");
+       }
+}
+
+// Generate RSA key
+
+bool rsa_generate(rsa_t *rsa, size_t bits, unsigned long exponent) {
+       *rsa = RSA_generate_key(bits, exponent, indicator, NULL);
+
+       return *rsa;
+}
+
+// Write PEM RSA keys
+
+bool rsa_write_pem_public_key(rsa_t *rsa, FILE *fp) {
+       PEM_write_RSAPublicKey(fp, *rsa);
+
+       return true;
+}
+
+bool rsa_write_pem_private_key(rsa_t *rsa, FILE *fp) {
+       PEM_write_RSAPrivateKey(fp, *rsa, NULL, NULL, 0, NULL, NULL);
+       return true;
+}