1 files changed, 95 insertions, 0 deletions
diff --git a/src/openvpn/crypto_polarssl.h b/src/openvpn/crypto_polarssl.h
new file mode 100644
index 0000000..bfabb91
--- /dev/null
+++ b/src/openvpn/crypto_polarssl.h
@@ -0,0 +1,95 @@
+/*
+ *  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 PolarSSL-specific backend interface
+ */
+
+#ifndef CRYPTO_POLARSSL_H_
+#define CRYPTO_POLARSSL_H_
+
+#include <polarssl/version.h>
+#include <polarssl/cipher.h>
+#include <polarssl/md.h>
+#include <polarssl/ctr_drbg.h>
+
+/** Generic cipher key type %context. */
+typedef cipher_info_t cipher_kt_t;
+
+/** Generic message digest key type %context. */
+typedef md_info_t md_kt_t;
+
+/** Generic cipher %context. */
+typedef cipher_context_t cipher_ctx_t;
+
+/** Generic message digest %context. */
+typedef md_context_t md_ctx_t;
+
+/** Generic HMAC %context. */
+typedef md_context_t hmac_ctx_t;
+
+/** Maximum length of an IV */
+#define OPENVPN_MAX_IV_LENGTH 	POLARSSL_MAX_IV_LENGTH
+
+/** Cipher is in CBC mode */
+#define OPENVPN_MODE_CBC 	POLARSSL_MODE_CBC
+
+/** Cipher is in OFB mode */
+#define OPENVPN_MODE_OFB 	POLARSSL_MODE_OFB
+
+/** Cipher is in CFB mode */
+#define OPENVPN_MODE_CFB 	POLARSSL_MODE_CFB128
+
+/** Cipher should encrypt */
+#define OPENVPN_OP_ENCRYPT 	POLARSSL_ENCRYPT
+
+/** Cipher should decrypt */
+#define OPENVPN_OP_DECRYPT 	POLARSSL_DECRYPT
+
+#define MD4_DIGEST_LENGTH 	16
+#define MD5_DIGEST_LENGTH 	16
+#define SHA_DIGEST_LENGTH 	20
+#define DES_KEY_LENGTH 8
+
+/**
+ * Returns a singleton instance of the PolarSSL random number generator.
+ *
+ * For PolarSSL 1.1+, this is the CTR_DRBG random number generator. If it
+ * hasn't been initialised yet, the RNG will be initialised using the default
+ * entropy sources. Aside from the default platform entropy sources, an
+ * additional entropy source, the HAVEGE random number generator will also be
+ * added. During initialisation, a personalisation string will be added based
+ * on the time, the PID, and a pointer to the random context.
+ */
+ctr_drbg_context * rand_ctx_get();
+
+#ifdef ENABLE_PREDICTION_RESISTANCE
+/**
+ * Enable prediction resistance on the random number generator.
+ */
+void rand_ctx_enable_prediction_resistance();
+#endif
+
+#endif /* CRYPTO_POLARSSL_H_ */