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avoid potential spurious BN_free()

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Submitted by: David Heine <dlheine@suif.Stanford.EDU>
This commit is contained in:
Bodo Möller 2005-08-23 04:14:40 +00:00
parent 7f3c9036ea
commit 7534d131d6
1 changed files with 4 additions and 2 deletions
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6
crypto/bn/bn_sqrt.c
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@ -83,7 +83,8 @@ BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx)
goto end;
if (!BN_set_word(ret, BN_is_bit_set(a, 0)))
{
BN_free(ret);
if (ret != in)
BN_free(ret);
return NULL;
}
bn_check_top(ret);
@ -102,7 +103,8 @@ BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx)
goto end;
if (!BN_set_word(ret, BN_is_one(a)))
{
BN_free(ret);
if (ret != in)
BN_free(ret);
return NULL;
}
bn_check_top(ret);