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diff --git a/netwerk/srtp/src/crypto/include/aes.h b/netwerk/srtp/src/crypto/include/aes.h
new file mode 100644
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+++ b/netwerk/srtp/src/crypto/include/aes.h
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+/*
+ * aes.h
+ *
+ * header file for the AES block cipher
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+ *	
+ * Copyright (c) 2001-2006, 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
+ *   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.
+ *
+ */
+
+#ifndef _AES_H
+#define _AES_H
+
+#include "config.h"
+
+#include "datatypes.h"
+#include "err.h"
+
+/* aes internals */
+
+typedef struct {
+  v128_t round[15];
+  int num_rounds;
+} aes_expanded_key_t;
+
+err_status_t
+aes_expand_encryption_key(const uint8_t *key,
+			  int key_len,
+			  aes_expanded_key_t *expanded_key);
+
+err_status_t
+aes_expand_decryption_key(const uint8_t *key,
+			  int key_len,
+			  aes_expanded_key_t *expanded_key);
+
+void
+aes_encrypt(v128_t *plaintext, const aes_expanded_key_t *exp_key);
+
+void
+aes_decrypt(v128_t *plaintext, const aes_expanded_key_t *exp_key);
+
+#if 0
+/*
+ * internal functions 
+ */
+
+void
+aes_init_sbox(void);
+
+void
+aes_compute_tables(void);
+#endif 
+
+#endif /* _AES_H */