diff options
| author | Nils Larsch <nils@openssl.org> | 2005-07-17 16:08:21 +0000 |
|---|---|---|
| committer | Nils Larsch <nils@openssl.org> | 2005-07-17 16:08:21 +0000 |
| commit | 3c6ab9aad940e8571745004cf3e4aff8b8a91ed6 (patch) | |
| tree | d58025c649cff4261305dec7615431708ec7f760 /crypto/bn/bn_word.c | |
| parent | 4913b88f704bd6cf2d6b5afa202ea4f9317422eb (diff) | |
bugfix: 0 - w (w != 0) is actually negative
Diffstat (limited to 'crypto/bn/bn_word.c')
| -rw-r--r-- | crypto/bn/bn_word.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/crypto/bn/bn_word.c b/crypto/bn/bn_word.c index 1bcb37e292..bc5905fef4 100644 --- a/crypto/bn/bn_word.c +++ b/crypto/bn/bn_word.c @@ -175,7 +175,13 @@ int BN_sub_word(BIGNUM *a, BN_ULONG w) /* degenerate case: w is zero */ if (!w) return 1; /* degenerate case: a is zero */ - if(BN_is_zero(a)) return BN_set_word(a,w); + if(BN_is_zero(a)) + { + i = BN_set_word(a,w); + if (i != 0) + BN_set_negative(a, 1); + return i; + } /* handle 'a' when negative */ if (a->neg) { |