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factor(6): Check return values of BN_* functions. 

Coverity Prevent:	CID 4862, 8771, 8772, 8773
This commit is contained in:
Ulrich Spörlein 2010-12-20 19:07:56 +00:00
parent 4f1ccb4be0
commit bf55df1986
1 changed files with 8 additions and 4 deletions
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12
games/factor/factor.c
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@ -211,7 +211,8 @@ pr_fact(BIGNUM *val)
bnfact = BN_new();
BN_set_word(bnfact, *(fact - 1));
BN_sqr(bnfact, bnfact, ctx);
if (!BN_sqr(bnfact, bnfact, ctx))
errx(1, "error in BN_sqr()");
if (BN_cmp(bnfact, val) > 0 ||
BN_is_prime(val, PRIME_CHECKS,
NULL, NULL, NULL) == 1)
@ -271,7 +272,8 @@ pollard_pminus1(BIGNUM *val)
BN_set_word(rbase, 1);
newbase:
BN_add_word(rbase, 1);
if (!BN_add_word(rbase, 1))
errx(1, "error in BN_add_word()");
BN_set_word(i, 2);
BN_copy(base, rbase);
@ -282,7 +284,8 @@ newbase:
BN_copy(x, base);
BN_sub_word(x, 1);
BN_gcd(x, x, val, ctx);
if (!BN_gcd(x, x, val, ctx))
errx(1, "error in BN_gcd()");
if (!BN_is_one(x)) {
if (BN_is_prime(x, PRIME_CHECKS, NULL, NULL,
@ -303,7 +306,8 @@ newbase:
}
BN_copy(val, num);
}
BN_add_word(i, 1);
if (!BN_add_word(i, 1))
errx(1, "error in BN_add_word()");
}
}