Update libsrtp to version 2.0

srtp/crypto/rng/rand_source_ossl.c

-/*
- * rand_source_ossl.c
- *
- * implements a random source based on OpenSSL RAND_bytes()
- *
- * John A. Foley 
- * Cisco Systems, Inc.
- */
-/*
- *
- * Copyright(c) 2013, Cisco Systems, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:crypto/test/aes_calc.c
- *
- *   Redistributions of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- *
- *   Redistributions in binary form must reproduce the above
- *   copyright notice, this list of conditions and the following
- *   disclaimer in the documentation and/or other materials provided
- *   with the distribution.
- *
- *   Neither the name of the Cisco Systems, Inc. nor the names of its
- *   contributors may be used to endorse or promote products derived
- *   from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#ifdef HAVE_CONFIG_H
-    #include <config.h>
-#endif
-
-#include "rand_source.h"
-#include <openssl/rand.h>
-
-
-err_status_t rand_source_init (void)
-{
-    return err_status_ok;
-}
-
-err_status_t rand_source_get_octet_string (void *dest, uint32_t len)
-{
-    if (RAND_bytes(dest, len) == 1) {
-        return err_status_ok;
-    } else {
-        return err_status_fail;
-    }
-}
-
-err_status_t rand_source_deinit (void)
-{
-    return err_status_ok;
-}