Remove gf2_8 header file.
diff --git a/crypto/cipher/aes.c b/crypto/cipher/aes.c
index 39a7623..119dd75 100644
--- a/crypto/cipher/aes.c
+++ b/crypto/cipher/aes.c
@@ -1356,6 +1356,15 @@
 };
 #endif /* CPU_RISC */
 
+#define gf2_8_field_polynomial 0x1B
+/*
+ * gf2_8_shift(z) returns the result of the GF(2^8) 'multiply by x' 
+ * operation, using the field representation from AES; that is, the 
+ * next gf2_8 value in the cyclic representation of that field.  The 
+ * value z should be an uint8_t.
+ */
+#define gf2_8_shift(z) (((z) & 128) ? \
+       (((z) << 1) ^ gf2_8_field_polynomial) : ((z) << 1))
 
 /* aes internals */
 
@@ -1366,7 +1375,7 @@
                                srtp_aes_expanded_key_t *expanded_key)
 {
     int i;
-    gf2_8 rc;
+    uint8_t rc;
 
     /* initialize round constant */
     rc = 1;
@@ -1419,7 +1428,7 @@
                                srtp_aes_expanded_key_t *expanded_key)
 {
     int i;
-    gf2_8 rc;
+    uint8_t rc;
 
     /* initialize round constant */
     rc = 1;
diff --git a/crypto/include/aes.h b/crypto/include/aes.h
index 68b2be8..3c27baf 100644
--- a/crypto/include/aes.h
+++ b/crypto/include/aes.h
@@ -47,7 +47,6 @@
 #define _AES_H
 
 #include "datatypes.h"
-#include "gf2_8.h"
 #include "err.h"
 
 /* aes internals */
diff --git a/crypto/include/gf2_8.h b/crypto/include/gf2_8.h
deleted file mode 100644
index 098d37c..0000000
--- a/crypto/include/gf2_8.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * gf2_8.h
- *
- * GF(256) implementation
- *
- * 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 GF2_8_H
-#define GF2_8_H
-
-#include "datatypes.h"  /* for uint8_t definition */
-
-typedef uint8_t gf2_8;
-
-#define gf2_8_field_polynomial 0x1B
-
-/*
- * gf2_8_shift(x) returns 
- */
-
-/*
- * gf2_8_shift(z) returns the result of the GF(2^8) 'multiply by x' 
- * operation, using the field representation from AES; that is, the 
- * next gf2_8 value in the cyclic representation of that field.  The 
- * value z should be an uint8_t.
- */
-
-#define gf2_8_shift(z) (((z) & 128) ? \
-       (((z) << 1) ^ gf2_8_field_polynomial) : ((z) << 1))
-
-gf2_8
-gf2_8_compute_inverse(gf2_8 x);
-
-void
-test_gf2_8(void);
-
-gf2_8
-gf2_8_multiply(gf2_8 x, gf2_8 y);
-
-#endif /* GF2_8_H */