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Don't turn b2 negative 

b2 being negative is ignored

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
GH: #4648
This commit is contained in:
Kurt Roeckx 2017-11-01 19:51:38 +01:00
parent e8ff08f7bb
commit 222cb307d4
1 changed files with 1 additions and 3 deletions
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4
fuzz/bignum.c
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@ -31,7 +31,7 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len)
{ {
int success = 0; int success = 0;
size_t l1 = 0, l2 = 0, l3 = 0; size_t l1 = 0, l2 = 0, l3 = 0;
int s1 = 0, s2 = 0, s3 = 0; int s1 = 0, s3 = 0;
BN_CTX *ctx; BN_CTX *ctx;
BIGNUM *b1; BIGNUM *b1;
BIGNUM *b2; BIGNUM *b2;
@ -59,14 +59,12 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len)
l3 = len - l1 - l2; l3 = len - l1 - l2;
s1 = buf[0] & 1; s1 = buf[0] & 1;
s2 = buf[0] & 2;
s3 = buf[0] & 4; s3 = buf[0] & 4;
++buf; ++buf;
} }
OPENSSL_assert(BN_bin2bn(buf, l1, b1) == b1); OPENSSL_assert(BN_bin2bn(buf, l1, b1) == b1);
BN_set_negative(b1, s1); BN_set_negative(b1, s1);
OPENSSL_assert(BN_bin2bn(buf + l1, l2, b2) == b2); OPENSSL_assert(BN_bin2bn(buf + l1, l2, b2) == b2);
BN_set_negative(b2, s2);
OPENSSL_assert(BN_bin2bn(buf + l1 + l2, l3, b3) == b3); OPENSSL_assert(BN_bin2bn(buf + l1 + l2, l3, b3) == b3);
BN_set_negative(b3, s3); BN_set_negative(b3, s3);