diff options
Diffstat (limited to 'cipher.c')
| -rw-r--r-- | cipher.c | 25 |
1 files changed, 7 insertions, 18 deletions
@@ -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 */ |