1 files changed, 0 insertions, 122 deletions
diff --git a/gpxe/src/crypto/hmac.c b/gpxe/src/crypto/hmac.c
deleted file mode 100644
index d64730c0..00000000
--- a/gpxe/src/crypto/hmac.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * 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; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-/**
- * @file
- *
- * Keyed-Hashing for Message Authentication
- */
-
-#include <string.h>
-#include <assert.h>
-#include <gpxe/crypto.h>
-#include <gpxe/hmac.h>
-
-/**
- * Reduce HMAC key length
- *
- * @v digest		Digest algorithm to use
- * @v digest_ctx	Digest context
- * @v key		Key
- * @v key_len		Length of key
- */
-static void hmac_reduce_key ( struct digest_algorithm *digest,
-			      void *key, size_t *key_len ) {
-	uint8_t digest_ctx[digest->ctxsize];
-
-	digest_init ( digest, digest_ctx );
-	digest_update ( digest, digest_ctx, key, *key_len );
-	digest_final ( digest, digest_ctx, key );
-	*key_len = digest->digestsize;
-}
-
-/**
- * Initialise HMAC
- *
- * @v digest		Digest algorithm to use
- * @v digest_ctx	Digest context
- * @v key		Key
- * @v key_len		Length of key
- *
- * The length of the key should be less than the block size of the
- * digest algorithm being used.  (If the key length is greater, it
- * will be replaced with its own digest, and key_len will be updated
- * accordingly).
- */
-void hmac_init ( struct digest_algorithm *digest, void *digest_ctx,
-		 void *key, size_t *key_len ) {
-	unsigned char k_ipad[digest->blocksize];
-	unsigned int i;
-
-	/* Reduce key if necessary */
-	if ( *key_len > sizeof ( k_ipad ) )
-		hmac_reduce_key ( digest, key, key_len );
-
-	/* Construct input pad */
-	memset ( k_ipad, 0, sizeof ( k_ipad ) );
-	memcpy ( k_ipad, key, *key_len );
-	for ( i = 0 ; i < sizeof ( k_ipad ) ; i++ ) {
-		k_ipad[i] ^= 0x36;
-	}
-	
-	/* Start inner hash */
-	digest_init ( digest, digest_ctx );
-	digest_update ( digest, digest_ctx, k_ipad, sizeof ( k_ipad ) );
-}
-
-/**
- * Finalise HMAC
- *
- * @v digest		Digest algorithm to use
- * @v digest_ctx	Digest context
- * @v key		Key
- * @v key_len		Length of key
- * @v hmac		HMAC digest to fill in
- *
- * The length of the key should be less than the block size of the
- * digest algorithm being used.  (If the key length is greater, it
- * will be replaced with its own digest, and key_len will be updated
- * accordingly).
- */
-void hmac_final ( struct digest_algorithm *digest, void *digest_ctx,
-		  void *key, size_t *key_len, void *hmac ) {
-	unsigned char k_opad[digest->blocksize];
-	unsigned int i;
-
-	/* Reduce key if necessary */
-	if ( *key_len > sizeof ( k_opad ) )
-		hmac_reduce_key ( digest, key, key_len );
-
-	/* Construct output pad */
-	memset ( k_opad, 0, sizeof ( k_opad ) );
-	memcpy ( k_opad, key, *key_len );
-	for ( i = 0 ; i < sizeof ( k_opad ) ; i++ ) {
-		k_opad[i] ^= 0x5c;
-	}
-	
-	/* Finish inner hash */
-	digest_final ( digest, digest_ctx, hmac );
-
-	/* Perform outer hash */
-	digest_init ( digest, digest_ctx );
-	digest_update ( digest, digest_ctx, k_opad, sizeof ( k_opad ) );
-	digest_update ( digest, digest_ctx, hmac, digest->digestsize );
-	digest_final ( digest, digest_ctx, hmac );
-}