| Index: openssl/crypto/aes/aes_cfb.c
|
| ===================================================================
|
| --- openssl/crypto/aes/aes_cfb.c (revision 105093)
|
| +++ openssl/crypto/aes/aes_cfb.c (working copy)
|
| @@ -1,6 +1,6 @@
|
| /* crypto/aes/aes_cfb.c -*- mode:C; c-file-style: "eay" -*- */
|
| /* ====================================================================
|
| - * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
|
| + * Copyright (c) 2002-2006 The OpenSSL Project. All rights reserved.
|
| *
|
| * Redistribution and use in source and binary forms, with or without
|
| * modification, are permitted provided that the following conditions
|
| @@ -48,73 +48,9 @@
|
| * ====================================================================
|
| *
|
| */
|
| -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
| - * All rights reserved.
|
| - *
|
| - * This package is an SSL implementation written
|
| - * by Eric Young (eay@cryptsoft.com).
|
| - * The implementation was written so as to conform with Netscapes SSL.
|
| - *
|
| - * This library is free for commercial and non-commercial use as long as
|
| - * the following conditions are aheared to. The following conditions
|
| - * apply to all code found in this distribution, be it the RC4, RSA,
|
| - * lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
| - * included with this distribution is covered by the same copyright terms
|
| - * except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
| - *
|
| - * Copyright remains Eric Young's, and as such any Copyright notices in
|
| - * the code are not to be removed.
|
| - * If this package is used in a product, Eric Young should be given attribution
|
| - * as the author of the parts of the library used.
|
| - * This can be in the form of a textual message at program startup or
|
| - * in documentation (online or textual) provided with the package.
|
| - *
|
| - * Redistribution and use in source and binary forms, with or without
|
| - * modification, are permitted provided that the following conditions
|
| - * are met:
|
| - * 1. Redistributions of source code must retain the copyright
|
| - * notice, this list of conditions and the following disclaimer.
|
| - * 2. 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.
|
| - * 3. All advertising materials mentioning features or use of this software
|
| - * must display the following acknowledgement:
|
| - * "This product includes cryptographic software written by
|
| - * Eric Young (eay@cryptsoft.com)"
|
| - * The word 'cryptographic' can be left out if the rouines from the library
|
| - * being used are not cryptographic related :-).
|
| - * 4. If you include any Windows specific code (or a derivative thereof) from
|
| - * the apps directory (application code) you must include an acknowledgement:
|
| - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
| - *
|
| - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.
|
| - *
|
| - * The licence and distribution terms for any publically available version or
|
| - * derivative of this code cannot be changed. i.e. this code cannot simply be
|
| - * copied and put under another distribution licence
|
| - * [including the GNU Public Licence.]
|
| - */
|
|
|
| -#ifndef AES_DEBUG
|
| -# ifndef NDEBUG
|
| -# define NDEBUG
|
| -# endif
|
| -#endif
|
| -#include <assert.h>
|
| -
|
| #include <openssl/aes.h>
|
| -#include "aes_locl.h"
|
| -#include "e_os.h"
|
| +#include <openssl/modes.h>
|
|
|
| /* The input and output encrypted as though 128bit cfb mode is being
|
| * used. The extra state information to record how much of the
|
| @@ -122,103 +58,24 @@
|
| */
|
|
|
| void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
|
| - const unsigned long length, const AES_KEY *key,
|
| + size_t length, const AES_KEY *key,
|
| unsigned char *ivec, int *num, const int enc) {
|
|
|
| - unsigned int n;
|
| - unsigned long l = length;
|
| - unsigned char c;
|
| -
|
| - assert(in && out && key && ivec && num);
|
| -
|
| - n = *num;
|
| -
|
| - if (enc) {
|
| - while (l--) {
|
| - if (n == 0) {
|
| - AES_encrypt(ivec, ivec, key);
|
| - }
|
| - ivec[n] = *(out++) = *(in++) ^ ivec[n];
|
| - n = (n+1) % AES_BLOCK_SIZE;
|
| - }
|
| - } else {
|
| - while (l--) {
|
| - if (n == 0) {
|
| - AES_encrypt(ivec, ivec, key);
|
| - }
|
| - c = *(in);
|
| - *(out++) = *(in++) ^ ivec[n];
|
| - ivec[n] = c;
|
| - n = (n+1) % AES_BLOCK_SIZE;
|
| - }
|
| - }
|
| -
|
| - *num=n;
|
| + CRYPTO_cfb128_encrypt(in,out,length,key,ivec,num,enc,(block128_f)AES_encrypt);
|
| }
|
|
|
| -/* This expects a single block of size nbits for both in and out. Note that
|
| - it corrupts any extra bits in the last byte of out */
|
| -void AES_cfbr_encrypt_block(const unsigned char *in,unsigned char *out,
|
| - const int nbits,const AES_KEY *key,
|
| - unsigned char *ivec,const int enc)
|
| - {
|
| - int n,rem,num;
|
| - unsigned char ovec[AES_BLOCK_SIZE*2];
|
| -
|
| - if (nbits<=0 || nbits>128) return;
|
| -
|
| - /* fill in the first half of the new IV with the current IV */
|
| - memcpy(ovec,ivec,AES_BLOCK_SIZE);
|
| - /* construct the new IV */
|
| - AES_encrypt(ivec,ivec,key);
|
| - num = (nbits+7)/8;
|
| - if (enc) /* encrypt the input */
|
| - for(n=0 ; n < num ; ++n)
|
| - out[n] = (ovec[AES_BLOCK_SIZE+n] = in[n] ^ ivec[n]);
|
| - else /* decrypt the input */
|
| - for(n=0 ; n < num ; ++n)
|
| - out[n] = (ovec[AES_BLOCK_SIZE+n] = in[n]) ^ ivec[n];
|
| - /* shift ovec left... */
|
| - rem = nbits%8;
|
| - num = nbits/8;
|
| - if(rem==0)
|
| - memcpy(ivec,ovec+num,AES_BLOCK_SIZE);
|
| - else
|
| - for(n=0 ; n < AES_BLOCK_SIZE ; ++n)
|
| - ivec[n] = ovec[n+num]<<rem | ovec[n+num+1]>>(8-rem);
|
| -
|
| - /* it is not necessary to cleanse ovec, since the IV is not secret */
|
| - }
|
| -
|
| /* N.B. This expects the input to be packed, MS bit first */
|
| void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
|
| - const unsigned long length, const AES_KEY *key,
|
| + size_t length, const AES_KEY *key,
|
| unsigned char *ivec, int *num, const int enc)
|
| {
|
| - unsigned int n;
|
| - unsigned char c[1],d[1];
|
| -
|
| - assert(in && out && key && ivec && num);
|
| - assert(*num == 0);
|
| -
|
| - for(n=0 ; n < length ; ++n)
|
| - {
|
| - c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
|
| - AES_cfbr_encrypt_block(c,d,1,key,ivec,enc);
|
| - out[n/8]=(out[n/8]&~(1 << (7-n%8)))|((d[0]&0x80) >> (n%8));
|
| - }
|
| + CRYPTO_cfb128_1_encrypt(in,out,length,key,ivec,num,enc,(block128_f)AES_encrypt);
|
| }
|
|
|
| void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
|
| - const unsigned long length, const AES_KEY *key,
|
| + size_t length, const AES_KEY *key,
|
| unsigned char *ivec, int *num, const int enc)
|
| {
|
| - unsigned int n;
|
| -
|
| - assert(in && out && key && ivec && num);
|
| - assert(*num == 0);
|
| -
|
| - for(n=0 ; n < length ; ++n)
|
| - AES_cfbr_encrypt_block(&in[n],&out[n],8,key,ivec,enc);
|
| + CRYPTO_cfb128_8_encrypt(in,out,length,key,ivec,num,enc,(block128_f)AES_encrypt);
|
| }
|
|
|
|
|