Refactored to rand_bytes for OpenSSL-independency

Signed-off-by: Adriaan de Jong <dejong@fox-it.com>
Acked-by: David Sommerseth <davids@redhat.com>
Signed-off-by: David Sommerseth <davids@redhat.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/crypto_openssl.c b/crypto_openssl.c
new file mode 100644
index 0000000..cbe559a
--- /dev/null
+++ b/crypto_openssl.c
@@ -0,0 +1,53 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *  Copyright (C) 2010 Fox Crypto B.V. <openvpn@fox-it.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/**
+ * @file Data Channel Cryptography OpenSSL-specific backend interface
+ */
+
+#include "syshead.h"
+
+#include "basic.h"
+#include "buffer.h"
+#include "integer.h"
+#include "crypto_backend.h"
+#include <openssl/objects.h>
+#include <openssl/evp.h>
+#include <openssl/des.h>
+
+/*
+ *
+ * Random number functions, used in cases where we want
+ * reasonably strong cryptographic random number generation
+ * without depleting our entropy pool.  Used for random
+ * IV values and a number of other miscellaneous tasks.
+ *
+ */
+
+int rand_bytes(uint8_t *output, int len)
+{
+  return RAND_bytes (output, len);
+}
+