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Diffstat (limited to 'usr.bin/ssh/cipher.c')
-rw-r--r--usr.bin/ssh/cipher.c25
1 files changed, 7 insertions, 18 deletions
diff --git a/usr.bin/ssh/cipher.c b/usr.bin/ssh/cipher.c
index 65cde4732a4..f9091453e96 100644
--- a/usr.bin/ssh/cipher.c
+++ b/usr.bin/ssh/cipher.c
@@ -35,7 +35,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: cipher.c,v 1.37 2000/10/23 19:31:54 markus Exp $");
+RCSID("$OpenBSD: cipher.c,v 1.38 2000/11/29 20:39:17 markus Exp $");
#include "ssh.h"
#include "xmalloc.h"
@@ -154,14 +154,9 @@ des3_ssh1_encrypt(CipherContext *cc, u_char *dest, const u_char *src,
memcpy(&iv1, iv2, 8);
- des_cbc_encrypt(src, dest, len, cc->u.des3.key1, &iv1, DES_ENCRYPT);
- memcpy(&iv1, dest + len - 8, 8);
-
- des_cbc_encrypt(dest, dest, len, cc->u.des3.key2, iv2, DES_DECRYPT);
- memcpy(iv2, &iv1, 8); /* Note how iv1 == iv2 on entry and exit. */
-
- des_cbc_encrypt(dest, dest, len, cc->u.des3.key3, iv3, DES_ENCRYPT);
- memcpy(iv3, dest + len - 8, 8);
+ des_ncbc_encrypt(src, dest, len, cc->u.des3.key1, &iv1, DES_ENCRYPT);
+ des_ncbc_encrypt(dest, dest, len, cc->u.des3.key2, iv2, DES_DECRYPT);
+ des_ncbc_encrypt(dest, dest, len, cc->u.des3.key3, iv3, DES_ENCRYPT);
}
void
des3_ssh1_decrypt(CipherContext *cc, u_char *dest, const u_char *src,
@@ -173,15 +168,9 @@ des3_ssh1_decrypt(CipherContext *cc, u_char *dest, const u_char *src,
memcpy(&iv1, iv2, 8);
- des_cbc_encrypt(src, dest, len, cc->u.des3.key3, iv3, DES_DECRYPT);
- memcpy(iv3, src + len - 8, 8);
-
- des_cbc_encrypt(dest, dest, len, cc->u.des3.key2, iv2, DES_ENCRYPT);
- memcpy(iv2, dest + len - 8, 8);
-
- des_cbc_encrypt(dest, dest, len, cc->u.des3.key1, &iv1, DES_DECRYPT);
- /* memcpy(&iv1, iv2, 8); */
- /* Note how iv1 == iv2 on entry and exit. */
+ des_ncbc_encrypt(src, dest, len, cc->u.des3.key3, iv3, DES_DECRYPT);
+ des_ncbc_encrypt(dest, dest, len, cc->u.des3.key2, iv2, DES_ENCRYPT);
+ des_ncbc_encrypt(dest, dest, len, cc->u.des3.key1, &iv1, DES_DECRYPT);
}
/* Blowfish */