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rijndael encryption context/scheduled key is assymmetric; need to setup two 

(one for encryption, one for decryption)
This commit is contained in:
itojun 2003-08-27 02:42:09 +00:00
parent 5c39f4aaa7
commit fb5acbcfc6
1 changed files with 16 additions and 6 deletions
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22
sys/netinet6/esp_rijndael.c
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@ -1,4 +1,4 @@
/* $NetBSD: esp_rijndael.c,v 1.15 2003/08/26 15:18:27 thorpej Exp $ */
/* $NetBSD: esp_rijndael.c,v 1.16 2003/08/27 02:42:09 itojun Exp $ */
/* $KAME: esp_rijndael.c,v 1.4 2001/03/02 05:53:05 itojun Exp $ */
/*
@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: esp_rijndael.c,v 1.15 2003/08/26 15:18:27 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: esp_rijndael.c,v 1.16 2003/08/27 02:42:09 itojun Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -55,7 +55,7 @@ esp_rijndael_schedlen(algo)
const struct esp_algorithm *algo;
{
return sizeof(rijndael_ctx);
return sizeof(rijndael_ctx) * 2;
}
int
@ -63,9 +63,15 @@ esp_rijndael_schedule(algo, sav)
const struct esp_algorithm *algo;
struct secasvar *sav;
{
rijndael_ctx *ctx;
rijndael_set_key((rijndael_ctx *)sav->sched,
ctx = (rijndael_ctx *)sav->sched;
/* decryption schedule */
rijndael_set_key(&ctx[0],
(u_char *)_KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc) * 8, 0);
/* encryption schedule */
rijndael_set_key(&ctx[1],
(u_char *)_KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc) * 8, 1);
return 0;
}
@ -76,8 +82,10 @@ esp_rijndael_blockdecrypt(algo, sav, s, d)
u_int8_t *s;
u_int8_t *d;
{
rijndael_ctx *ctx;
rijndael_decrypt((rijndael_ctx *)sav->sched, s, d);
ctx = (rijndael_ctx *)sav->sched;
rijndael_decrypt(&ctx[0], s, d);
return 0;
}
@ -88,7 +96,9 @@ esp_rijndael_blockencrypt(algo, sav, s, d)
u_int8_t *s;
u_int8_t *d;
{
rijndael_ctx *ctx;
rijndael_encrypt((rijndael_ctx *)sav->sched, s, d);
ctx = (rijndael_ctx *)sav->sched;
rijndael_encrypt(&ctx[1], s, d);
return 0;
}