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ecc_sign_hash max_iterations

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This commit is contained in:
Karel Miko 2017-06-21 13:25:06 +02:00
parent cdf04b6140
commit fff832091f
1 changed files with 6 additions and 2 deletions
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8
src/pk/ecc/ecc_sign_hash.c
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@ -22,7 +22,7 @@ static int _ecc_sign_hash(const unsigned char *in, unsigned long inlen,
{ {
ecc_key pubkey; ecc_key pubkey;
void *r, *s, *e, *p; void *r, *s, *e, *p;
int err; int err, max_iterations = 20;
unsigned long pbits, pbytes, i, shift_right; unsigned long pbits, pbytes, i, shift_right;
unsigned char ch, buf[MAXBLOCKSIZE]; unsigned char ch, buf[MAXBLOCKSIZE];
@ -71,7 +71,7 @@ static int _ecc_sign_hash(const unsigned char *in, unsigned long inlen,
} }
/* make up a key and export the public copy */ /* make up a key and export the public copy */
for (;;) { do {
if ((err = ecc_make_key_ex(prng, wprng, &pubkey, key->dp)) != CRYPT_OK) { if ((err = ecc_make_key_ex(prng, wprng, &pubkey, key->dp)) != CRYPT_OK) {
goto errnokey; goto errnokey;
} }
@ -93,6 +93,10 @@ static int _ecc_sign_hash(const unsigned char *in, unsigned long inlen,
break; break;
} }
} }
} while (--max_iterations > 0);
if (max_iterations == 0) {
goto errnokey;
} }
if (sigformat == 1) { if (sigformat == 1) {