mirror of git://anongit.mindrot.org/openssh.git
I was promised that this does not need to have endness fix up by Markus.
So I will blindly trust him. =) - markus@cvs.openbsd.org 2001/08/23 11:31:59 [cipher.c cipher.h] switch to the optimised AES reference code from http://www.esat.kuleuven.ac.be/~rijmen/rijndael/rijndael-fst-3.0.zip
This commit is contained in:
Ben Lindstrom
parent
4213c559ef
commit
319fc7353c
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@ -1,3 +1,10 @@
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20010913
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- (bal) OpenBSD CVS Sync
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- markus@cvs.openbsd.org 2001/08/23 11:31:59
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[cipher.c cipher.h]
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switch to the optimised AES reference code from
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http://www.esat.kuleuven.ac.be/~rijmen/rijndael/rijndael-fst-3.0.zip
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20010912
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- (bal) OpenBSD CVS Sync
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- jakob@cvs.openbsd.org 2001/08/16 19:18:34
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@ -6409,4 +6416,4 @@
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- Wrote replacements for strlcpy and mkdtemp
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- Released 1.0pre1
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$Id: ChangeLog,v 1.1510 2001/09/12 18:45:09 mouring Exp $
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$Id: ChangeLog,v 1.1511 2001/09/14 02:47:33 mouring Exp $
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59
cipher.c
59
cipher.c
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@ -35,7 +35,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: cipher.c,v 1.46 2001/06/25 08:25:36 markus Exp $");
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RCSID("$OpenBSD: cipher.c,v 1.47 2001/08/23 11:31:59 markus Exp $");
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#include "xmalloc.h"
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#include "log.h"
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@ -283,66 +283,65 @@ cast_cbc_decrypt(CipherContext *cc, u_char *dest, const u_char *src, u_int len)
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static void
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rijndael_setkey(CipherContext *cc, const u_char *key, u_int keylen)
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{
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rijndael_set_key(&cc->u.rijndael.enc, (u4byte *)key, 8*keylen, 1);
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rijndael_set_key(&cc->u.rijndael.dec, (u4byte *)key, 8*keylen, 0);
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rijndael_set_key(&cc->u.rijndael.enc, (char *)key, 8*keylen, 1);
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rijndael_set_key(&cc->u.rijndael.dec, (char *)key, 8*keylen, 0);
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}
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static void
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rijndael_setiv(CipherContext *cc, const u_char *iv, u_int ivlen)
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{
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if (iv == NULL)
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fatal("no IV for %s.", cc->cipher->name);
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memcpy((u_char *)cc->u.rijndael.iv, iv, RIJNDAEL_BLOCKSIZE);
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if (iv == NULL || ivlen != RIJNDAEL_BLOCKSIZE)
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fatal("bad/no IV for %s.", cc->cipher->name);
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memcpy(cc->u.rijndael.iv, iv, RIJNDAEL_BLOCKSIZE);
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}
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static void
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rijndael_cbc_encrypt(CipherContext *cc, u_char *dest, const u_char *src,
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u_int len)
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{
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rijndael_ctx *ctx = &cc->u.rijndael.enc;
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u4byte *iv = cc->u.rijndael.iv;
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u4byte in[4];
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u4byte *cprev, *cnow, *plain;
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int i, blocks = len / RIJNDAEL_BLOCKSIZE;
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u_char *iv = cc->u.rijndael.iv;
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u_char in[RIJNDAEL_BLOCKSIZE];
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u_char *cprev, *cnow, *plain;
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int i, j, blocks = len / RIJNDAEL_BLOCKSIZE;
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if (len == 0)
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return;
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if (len % RIJNDAEL_BLOCKSIZE)
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fatal("rijndael_cbc_encrypt: bad len %d", len);
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cnow = (u4byte*) dest;
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plain = (u4byte*) src;
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cnow = dest;
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plain = (u_char *) src;
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cprev = iv;
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for(i = 0; i < blocks; i++, plain+=4, cnow+=4) {
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in[0] = plain[0] ^ cprev[0];
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in[1] = plain[1] ^ cprev[1];
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in[2] = plain[2] ^ cprev[2];
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in[3] = plain[3] ^ cprev[3];
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for (i = 0; i < blocks; i++, plain+=RIJNDAEL_BLOCKSIZE,
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cnow+=RIJNDAEL_BLOCKSIZE) {
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for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
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in[j] = plain[j] ^ cprev[j];
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rijndael_encrypt(ctx, in, cnow);
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cprev = cnow;
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}
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memcpy(iv, cprev, RIJNDAEL_BLOCKSIZE);
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}
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static void
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rijndael_cbc_decrypt(CipherContext *cc, u_char *dest, const u_char *src,
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u_int len)
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{
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rijndael_ctx *ctx = &cc->u.rijndael.dec;
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u4byte *iv = cc->u.rijndael.iv;
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u4byte ivsaved[4];
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u4byte *cnow = (u4byte*) (src+len-RIJNDAEL_BLOCKSIZE);
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u4byte *plain = (u4byte*) (dest+len-RIJNDAEL_BLOCKSIZE);
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u4byte *ivp;
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int i, blocks = len / RIJNDAEL_BLOCKSIZE;
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u_char *iv = cc->u.rijndael.iv;
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u_char ivsaved[RIJNDAEL_BLOCKSIZE];
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u_char *cnow = (u_char *) (src+len-RIJNDAEL_BLOCKSIZE);
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u_char *plain = dest+len-RIJNDAEL_BLOCKSIZE;
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u_char *ivp;
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int i, j, blocks = len / RIJNDAEL_BLOCKSIZE;
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if (len == 0)
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return;
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if (len % RIJNDAEL_BLOCKSIZE)
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fatal("rijndael_cbc_decrypt: bad len %d", len);
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memcpy(ivsaved, cnow, RIJNDAEL_BLOCKSIZE);
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for(i = blocks; i > 0; i--, cnow-=4, plain-=4) {
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for (i = blocks; i > 0; i--, cnow-=RIJNDAEL_BLOCKSIZE,
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plain-=RIJNDAEL_BLOCKSIZE) {
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rijndael_decrypt(ctx, cnow, plain);
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ivp = (i == 1) ? iv : cnow-4;
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plain[0] ^= ivp[0];
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plain[1] ^= ivp[1];
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plain[2] ^= ivp[2];
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plain[3] ^= ivp[3];
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ivp = (i == 1) ? iv : cnow-RIJNDAEL_BLOCKSIZE;
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for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
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plain[j] ^= ivp[j];
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}
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memcpy(iv, ivsaved, RIJNDAEL_BLOCKSIZE);
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}
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4
cipher.h
4
cipher.h
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@ -32,7 +32,7 @@
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* RCSID("$OpenBSD: cipher.h,v 1.28 2001/06/26 17:27:23 markus Exp $"); */
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/* RCSID("$OpenBSD: cipher.h,v 1.29 2001/08/23 11:31:59 markus Exp $"); */
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#ifndef CIPHER_H
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#define CIPHER_H
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@ -85,7 +85,7 @@ struct CipherContext {
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u_char iv[8];
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} cast;
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struct {
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u4byte iv[4];
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u_char iv[16];
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rijndael_ctx enc;
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rijndael_ctx dec;
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} rijndael;
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1586
rijndael.c
1586
rijndael.c
File diff suppressed because it is too large
Load Diff
98
rijndael.h
98
rijndael.h
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@ -1,63 +1,49 @@
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/* $OpenBSD: rijndael.h,v 1.9 2001/07/30 16:23:30 stevesk Exp $ */
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/**
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* rijndael-alg-fst.h
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*
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* @version 3.0 (December 2000)
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*
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* Optimised ANSI C code for the Rijndael cipher (now AES)
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*
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* @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
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* @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
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* @author Paulo Barreto <paulo.barreto@terra.com.br>
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*
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* This code is hereby placed in the public domain.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __RIJNDAEL_H
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#define __RIJNDAEL_H
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/* This is an independent implementation of the encryption algorithm: */
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/* */
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/* RIJNDAEL by Joan Daemen and Vincent Rijmen */
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/* */
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/* which is a candidate algorithm in the Advanced Encryption Standard */
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/* programme of the US National Institute of Standards and Technology. */
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#define MAXKC (256/32)
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#define MAXKB (256/8)
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#define MAXNR 14
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/*
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-----------------------------------------------------------------------
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Copyright (c) 2001 Dr Brian Gladman <brg@gladman.uk.net>, Worcester, UK
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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TERMS
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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This software is provided 'as is' with no guarantees of correctness or
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fitness for purpose.
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-----------------------------------------------------------------------
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*/
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#ifndef _RIJNDAEL_H_
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#define _RIJNDAEL_H_
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#include "config.h"
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/* 1. Standard types for AES cryptography source code */
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typedef u_int8_t u1byte; /* an 8 bit unsigned character type */
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typedef u_int16_t u2byte; /* a 16 bit unsigned integer type */
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typedef u_int32_t u4byte; /* a 32 bit unsigned integer type */
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typedef int8_t s1byte; /* an 8 bit signed character type */
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typedef int16_t s2byte; /* a 16 bit signed integer type */
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typedef int32_t s4byte; /* a 32 bit signed integer type */
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typedef struct _rijndael_ctx {
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u4byte k_len;
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/* The structure for key information */
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typedef struct {
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int decrypt;
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u4byte e_key[64];
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u4byte d_key[64];
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int Nr; /* key-length-dependent number of rounds */
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u32 ek[4*(MAXNR + 1)]; /* encrypt key schedule */
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u32 dk[4*(MAXNR + 1)]; /* decrypt key schedule */
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} rijndael_ctx;
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void rijndael_set_key(rijndael_ctx *, u_char *, int, int);
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void rijndael_decrypt(rijndael_ctx *, u_char *, u_char *);
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void rijndael_encrypt(rijndael_ctx *, u_char *, u_char *);
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/* 2. Standard interface for AES cryptographic routines */
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/* These are all based on 32 bit unsigned values and will therefore */
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/* require endian conversions for big-endian architectures */
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rijndael_ctx *
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rijndael_set_key __P((rijndael_ctx *, const u4byte *, const u4byte, int));
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void rijndael_encrypt __P((rijndael_ctx *, const u4byte *, u4byte *));
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void rijndael_decrypt __P((rijndael_ctx *, const u4byte *, u4byte *));
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#endif /* _RIJNDAEL_H_ */
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#endif /* __RIJNDAEL_H */
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