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Diffstat (limited to 'gpxe/src/crypto/cbc.c')
-rw-r--r--gpxe/src/crypto/cbc.c101
1 files changed, 0 insertions, 101 deletions
diff --git a/gpxe/src/crypto/cbc.c b/gpxe/src/crypto/cbc.c
deleted file mode 100644
index 1710203c..00000000
--- a/gpxe/src/crypto/cbc.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2009 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 );
-
-#include <string.h>
-#include <assert.h>
-#include <gpxe/crypto.h>
-#include <gpxe/cbc.h>
-
-/** @file
- *
- * Cipher-block chaining
- *
- */
-
-/**
- * XOR data blocks
- *
- * @v src Input data
- * @v dst Second input data and output data buffer
- * @v len Length of data
- */
-static void cbc_xor ( const void *src, void *dst, size_t len ) {
- const uint32_t *srcl = src;
- uint32_t *dstl = dst;
- unsigned int i;
-
- /* Assume that block sizes will always be dword-aligned, for speed */
- assert ( ( len % sizeof ( *srcl ) ) == 0 );
-
- for ( i = 0 ; i < ( len / sizeof ( *srcl ) ) ; i++ )
- dstl[i] ^= srcl[i];
-}
-
-/**
- * Encrypt data
- *
- * @v ctx Context
- * @v src Data to encrypt
- * @v dst Buffer for encrypted data
- * @v len Length of data
- * @v raw_cipher Underlying cipher algorithm
- * @v cbc_ctx CBC context
- */
-void cbc_encrypt ( void *ctx, const void *src, void *dst, size_t len,
- struct cipher_algorithm *raw_cipher, void *cbc_ctx ) {
- size_t blocksize = raw_cipher->blocksize;
-
- assert ( ( len % blocksize ) == 0 );
-
- while ( len ) {
- cbc_xor ( src, cbc_ctx, blocksize );
- cipher_encrypt ( raw_cipher, ctx, cbc_ctx, dst, blocksize );
- memcpy ( cbc_ctx, dst, blocksize );
- dst += blocksize;
- src += blocksize;
- len -= blocksize;
- }
-}
-
-/**
- * Decrypt data
- *
- * @v ctx Context
- * @v src Data to decrypt
- * @v dst Buffer for decrypted data
- * @v len Length of data
- * @v raw_cipher Underlying cipher algorithm
- * @v cbc_ctx CBC context
- */
-void cbc_decrypt ( void *ctx, const void *src, void *dst, size_t len,
- struct cipher_algorithm *raw_cipher, void *cbc_ctx ) {
- size_t blocksize = raw_cipher->blocksize;
-
- assert ( ( len % blocksize ) == 0 );
-
- while ( len ) {
- cipher_decrypt ( raw_cipher, ctx, src, dst, blocksize );
- cbc_xor ( cbc_ctx, dst, blocksize );
- memcpy ( cbc_ctx, src, blocksize );
- dst += blocksize;
- src += blocksize;
- len -= blocksize;
- }
-}