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fixes in bignum padding

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Vysheng 2014-09-23 19:06:20 +04:00
parent 9cebc24d8b
commit b9878e5c1a
1 changed files with 4 additions and 4 deletions
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8
queries.c
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@ -2993,7 +2993,7 @@ void tgl_do_send_accept_encr_chat (struct tgl_secret_chat *E, unsigned char *ran
ensure (BN_mod_exp (r, g_a, b, p, tgl_state.BN_ctx)); ensure (BN_mod_exp (r, g_a, b, p, tgl_state.BN_ctx));
static unsigned char kk[256]; static unsigned char kk[256];
memset (kk, 0, sizeof (kk)); memset (kk, 0, sizeof (kk));
BN_bn2bin (r, kk); BN_bn2bin (r, kk + (256 - BN_num_bytes (r)));
for (i = 0; i < 256; i++) { for (i = 0; i < 256; i++) {
kk[i] ^= E->nonce[i]; kk[i] ^= E->nonce[i];
} }
@ -3012,7 +3012,7 @@ void tgl_do_send_accept_encr_chat (struct tgl_secret_chat *E, unsigned char *ran
ensure (BN_mod_exp (r, g_a, b, p, tgl_state.BN_ctx)); ensure (BN_mod_exp (r, g_a, b, p, tgl_state.BN_ctx));
static unsigned char buf[256]; static unsigned char buf[256];
memset (buf, 0, sizeof (buf)); memset (buf, 0, sizeof (buf));
BN_bn2bin (r, buf); BN_bn2bin (r, buf + (256 - BN_num_bytes (r)));
out_cstring ((void *)buf, 256); out_cstring ((void *)buf, 256);
out_long (E->key_fingerprint); out_long (E->key_fingerprint);
@ -3041,7 +3041,7 @@ void tgl_do_create_keys_end (struct tgl_secret_chat *U) {
memcpy (t, U->key, 256); memcpy (t, U->key, 256);
memset (U->key, 0, sizeof (U->key)); memset (U->key, 0, sizeof (U->key));
BN_bn2bin (r, (void *)U->key); BN_bn2bin (r, (void *)(((char *)(U->key)) + (256 - BN_num_bytes (r))));
int i; int i;
for (i = 0; i < 64; i++) { for (i = 0; i < 64; i++) {
U->key[i] ^= *(((int *)U->nonce) + i); U->key[i] ^= *(((int *)U->nonce) + i);
@ -3091,7 +3091,7 @@ void tgl_do_send_create_encr_chat (void *x, unsigned char *random, void (*callba
static char g_a[256]; static char g_a[256];
memset (g_a, 0, 256); memset (g_a, 0, 256);
BN_bn2bin (r, (void *)g_a); BN_bn2bin (r, (void *)(g_a + (256 - BN_num_bytes (r))));
int t = lrand48 (); int t = lrand48 ();
while (tgl_peer_get (TGL_MK_ENCR_CHAT (t))) { while (tgl_peer_get (TGL_MK_ENCR_CHAT (t))) {