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bn: catch negative zero as an error

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Change-Id: I5ab72ad0aae9069b47d5b7b7b9e25bd1b7afa251
Signed-off-by: Geoff Thorpe <geoff@openssl.org>

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1672)
This commit is contained in:
Geoff Thorpe 2016-10-06 09:02:38 -05:00 committed by Richard Levitte
parent 0b50ac1a0f
commit 2fc9b36a96
1 changed files with 2 additions and 2 deletions
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4
crypto/bn/bn_lcl.h
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@ -177,8 +177,8 @@ int RAND_bytes(unsigned char *buf, int num);
do { \
const BIGNUM *_bnum2 = (a); \
if (_bnum2 != NULL) { \
OPENSSL_assert((_bnum2->top == 0) || \
(_bnum2->d[_bnum2->top - 1] != 0)); \
OPENSSL_assert(((_bnum2->top == 0) && !_bnum2->neg) || \
(_bnum2->top && (_bnum2->d[_bnum2->top - 1] != 0))); \
bn_pollute(_bnum2); \
} \
} while(0)