Update libsrtp to upstream 1.5.0

srtp/crypto/include/aes_gcm_ossl.h

 /*
- * alloc.h
+ * aes_gcm_ossl.h
  *
- * interface to memory allocation and deallocation, with optional debugging 
+ * Header for AES Galois Counter Mode.
  *
- * David A. McGrew
+ * John A. Foley
  * Cisco Systems, Inc.
+ *
  */
 /*
  *      
- * Copyright (c) 2001-2006 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:
  * 
  *   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
@@ skipping 13 matching lines @@
  * 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.
  *
  */
 
+#ifndef AES_GCM_OSSL_H
+#define AES_GCM_OSSL_H
 
-#ifndef CRYPTO_ALLOC_H
-#define CRYPTO_ALLOC_H
+#include "cipher.h"
+#include "srtp.h"
+#include <openssl/evp.h>
+#include <openssl/aes.h>
 
-#include "datatypes.h"
+typedef struct {
+  v256_t   key;
+  int      key_size;
+  int      tag_len;
+  EVP_CIPHER_CTX ctx;
+  cipher_direction_t dir;
+} aes_gcm_ctx_t;
 
-void *
-crypto_alloc(size_t size);
+#endif /* AES_GCM_OSSL_H */
 
-void
-crypto_free(void *ptr);
-
-#endif /* CRYPTO_ALLOC_H */