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authorBen Lindstrom <mouring@eviladmin.org>2000-12-10 01:55:37 +0000
committerBen Lindstrom <mouring@eviladmin.org>2000-12-10 01:55:37 +0000
commitfa1b3d08421d263694d5fb3989d796a57d714f2a (patch)
treed3e8b0669d169e2c6c3ca8e3c30ddc5538ec6490 /cipher.c
parenta688561ef4bf78651e60b112960b099c2bee1d90 (diff)
20001210
- (bal) OpenBSD CVS updates - markus@cvs.openbsd.org 2000/12/09 13:41:51 [cipher.c cipher.h rijndael.c rijndael.h rijndael_boxes.h] undo rijndael changes - markus@cvs.openbsd.org 2000/12/09 13:48:31 [rijndael.c] fix byte order bug w/o introducing new implementation - markus@cvs.openbsd.org 2000/12/09 14:08:27 [sftp-server.c] "" -> "." for realpath; from vinschen@redhat.com - markus@cvs.openbsd.org 2000/12/09 14:06:54 [ssh-agent.c] extern int optind; from stevesk@sweden.hp.com
Diffstat (limited to 'cipher.c')
-rw-r--r--cipher.c67
1 files changed, 31 insertions, 36 deletions
diff --git a/cipher.c b/cipher.c
index 46ca830e..788028c1 100644
--- a/cipher.c
+++ b/cipher.c
@@ -35,7 +35,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: cipher.c,v 1.39 2000/12/06 23:05:42 markus Exp $");
+RCSID("$OpenBSD: cipher.c,v 1.40 2000/12/09 13:41:52 markus Exp $");
#include "ssh.h"
#include "xmalloc.h"
@@ -285,45 +285,40 @@ cast_cbc_decrypt(CipherContext *cc, u_char *dest, const u_char *src, u_int len)
/* RIJNDAEL */
#define RIJNDAEL_BLOCKSIZE 16
-
void
rijndael_setkey(CipherContext *cc, const u_char *key, u_int keylen)
{
- if (rijndael_makekey(&cc->u.rijndael.enc, RIJNDAEL_ENCRYPT,
- 8*keylen, (char *)key) == -1)
- fatal("rijndael_setkey: RIJNDAEL_ENCRYPT");
- if (rijndael_makekey(&cc->u.rijndael.dec, RIJNDAEL_DECRYPT,
- 8*keylen, (char *)key) == -1)
- fatal("rijndael_setkey: RIJNDAEL_DECRYPT");
+ rijndael_set_key(&cc->u.rijndael.enc, (u4byte *)key, 8*keylen, 1);
+ rijndael_set_key(&cc->u.rijndael.dec, (u4byte *)key, 8*keylen, 0);
}
void
rijndael_setiv(CipherContext *cc, const u_char *iv, u_int ivlen)
{
- if (iv == NULL || ivlen != RIJNDAEL_BLOCKSIZE)
- fatal("bad/no IV for %s.", cc->cipher->name);
- memcpy(cc->u.rijndael.iv, iv, RIJNDAEL_BLOCKSIZE);
+ if (iv == NULL)
+ fatal("no IV for %s.", cc->cipher->name);
+ memcpy((u_char *)cc->u.rijndael.iv, iv, RIJNDAEL_BLOCKSIZE);
}
-
void
rijndael_cbc_encrypt(CipherContext *cc, u_char *dest, const u_char *src,
u_int len)
{
- rijndael_key *ctx = &cc->u.rijndael.enc;
- u_char *iv = cc->u.rijndael.iv;
- u_char in[RIJNDAEL_BLOCKSIZE];
- u_char *cprev, *cnow, *plain;
- int i, j, blocks = len / RIJNDAEL_BLOCKSIZE;
+ rijndael_ctx *ctx = &cc->u.rijndael.enc;
+ u4byte *iv = cc->u.rijndael.iv;
+ u4byte in[4];
+ u4byte *cprev, *cnow, *plain;
+ int i, blocks = len / RIJNDAEL_BLOCKSIZE;
if (len == 0)
return;
if (len % RIJNDAEL_BLOCKSIZE)
fatal("rijndael_cbc_encrypt: bad len %d", len);
- cnow = dest;
- plain = (u_char *) src;
+ cnow = (u4byte*) dest;
+ plain = (u4byte*) src;
cprev = iv;
- for(i = 0; i < blocks; i++, plain+=RIJNDAEL_BLOCKSIZE,
- cnow+=RIJNDAEL_BLOCKSIZE) {
- for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
- in[j] = plain[j] ^ cprev[j];
+ for(i = 0; i < blocks; i++, plain+=4, cnow+=4) {
+ in[0] = plain[0] ^ cprev[0];
+ in[1] = plain[1] ^ cprev[1];
+ in[2] = plain[2] ^ cprev[2];
+ in[3] = plain[3] ^ cprev[3];
rijndael_encrypt(ctx, in, cnow);
cprev = cnow;
}
@@ -334,25 +329,25 @@ void
rijndael_cbc_decrypt(CipherContext *cc, u_char *dest, const u_char *src,
u_int len)
{
- rijndael_key *ctx = &cc->u.rijndael.dec;
- u_char *iv = cc->u.rijndael.iv;
- u_char ivsaved[RIJNDAEL_BLOCKSIZE];
- u_char *cnow = (u_char *) (src+len-RIJNDAEL_BLOCKSIZE);
- u_char *plain = dest+len-RIJNDAEL_BLOCKSIZE;
- u_char *ivp;
- int i, j, blocks = len / RIJNDAEL_BLOCKSIZE;
+ rijndael_ctx *ctx = &cc->u.rijndael.dec;
+ u4byte *iv = cc->u.rijndael.iv;
+ u4byte ivsaved[4];
+ u4byte *cnow = (u4byte*) (src+len-RIJNDAEL_BLOCKSIZE);
+ u4byte *plain = (u4byte*) (dest+len-RIJNDAEL_BLOCKSIZE);
+ u4byte *ivp;
+ int i, blocks = len / RIJNDAEL_BLOCKSIZE;
if (len == 0)
return;
if (len % RIJNDAEL_BLOCKSIZE)
fatal("rijndael_cbc_decrypt: bad len %d", len);
memcpy(ivsaved, cnow, RIJNDAEL_BLOCKSIZE);
- for(i = blocks; i > 0; i--, cnow-=RIJNDAEL_BLOCKSIZE,
- plain-=RIJNDAEL_BLOCKSIZE) {
+ for(i = blocks; i > 0; i--, cnow-=4, plain-=4) {
rijndael_decrypt(ctx, cnow, plain);
- //rijndael_decrypt(cnow, plain, ctx->keySched, ctx->ROUNDS);
- ivp = (i == 1) ? iv : cnow-RIJNDAEL_BLOCKSIZE;
- for (j = 0; j < RIJNDAEL_BLOCKSIZE; j++)
- plain[j] ^= ivp[j];
+ ivp = (i == 1) ? iv : cnow-4;
+ plain[0] ^= ivp[0];
+ plain[1] ^= ivp[1];
+ plain[2] ^= ivp[2];
+ plain[3] ^= ivp[3];
}
memcpy(iv, ivsaved, RIJNDAEL_BLOCKSIZE);
}