diff options
| author | Markus Friedl <markus@cvs.openbsd.org> | 2001-05-28 22:51:12 +0000 |
|---|---|---|
| committer | Markus Friedl <markus@cvs.openbsd.org> | 2001-05-28 22:51:12 +0000 |
| commit | 086da3bbc1052928ed31ebe1532ee833c1d254f7 (patch) | |
| tree | ad3da72633f59c9f779477f491151350603202ba /usr.bin | |
| parent | c634e86a4453818282518cd0c06207d41b6fa10f (diff) | |
simpler 3des for ssh1
Diffstat (limited to 'usr.bin')
| -rw-r--r-- | usr.bin/ssh/cipher.c | 33 | ||||
| -rw-r--r-- | usr.bin/ssh/cipher.h | 5 |
2 files changed, 17 insertions, 21 deletions
diff --git a/usr.bin/ssh/cipher.c b/usr.bin/ssh/cipher.c index 5350703efbf..fd93299edaf 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 1.43 2001/02/04 15:32:23 stevesk Exp $"); +RCSID("$OpenBSD: cipher.c,v 1.44 2001/05/28 22:51:10 markus Exp $"); #include "xmalloc.h" #include "log.h" @@ -100,6 +100,7 @@ des3_setkey(CipherContext *cc, const u_char *key, u_int keylen) void des3_setiv(CipherContext *cc, const u_char *iv, u_int ivlen) { + memset(cc->u.des3.iv1, 0, sizeof(cc->u.des3.iv1)); memset(cc->u.des3.iv2, 0, sizeof(cc->u.des3.iv2)); memset(cc->u.des3.iv3, 0, sizeof(cc->u.des3.iv3)); if (iv == NULL) @@ -149,29 +150,23 @@ void des3_ssh1_encrypt(CipherContext *cc, u_char *dest, const u_char *src, u_int len) { - des_cblock iv1; - des_cblock *iv2 = &cc->u.des3.iv2; - des_cblock *iv3 = &cc->u.des3.iv3; - - memcpy(&iv1, iv2, 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); + des_ncbc_encrypt(src, dest, len, cc->u.des3.key1, &cc->u.des3.iv1, + DES_ENCRYPT); + des_ncbc_encrypt(dest, dest, len, cc->u.des3.key2, &cc->u.des3.iv2, + DES_DECRYPT); + des_ncbc_encrypt(dest, dest, len, cc->u.des3.key3, &cc->u.des3.iv3, + DES_ENCRYPT); } void des3_ssh1_decrypt(CipherContext *cc, u_char *dest, const u_char *src, u_int len) { - des_cblock iv1; - des_cblock *iv2 = &cc->u.des3.iv2; - des_cblock *iv3 = &cc->u.des3.iv3; - - memcpy(&iv1, iv2, 8); - - 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); + des_ncbc_encrypt(src, dest, len, cc->u.des3.key3, &cc->u.des3.iv3, + DES_DECRYPT); + des_ncbc_encrypt(dest, dest, len, cc->u.des3.key2, &cc->u.des3.iv2, + DES_ENCRYPT); + des_ncbc_encrypt(dest, dest, len, cc->u.des3.key1, &cc->u.des3.iv1, + DES_DECRYPT); } /* Blowfish */ diff --git a/usr.bin/ssh/cipher.h b/usr.bin/ssh/cipher.h index 6d929aaff2a..2ad4979c272 100644 --- a/usr.bin/ssh/cipher.h +++ b/usr.bin/ssh/cipher.h @@ -32,7 +32,7 @@ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* RCSID("$OpenBSD: cipher.h,v 1.25 2000/12/19 23:17:56 markus Exp $"); */ +/* RCSID("$OpenBSD: cipher.h,v 1.26 2001/05/28 22:51:11 markus Exp $"); */ #ifndef CIPHER_H #define CIPHER_H @@ -71,8 +71,9 @@ struct CipherContext { struct { des_key_schedule key1; des_key_schedule key2; - des_cblock iv2; des_key_schedule key3; + des_cblock iv1; + des_cblock iv2; des_cblock iv3; } des3; struct { |