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Remove some unneccessary use of constant time code in curve448

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Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/5105)
This commit is contained in:
Matt Caswell 2018-02-07 12:14:25 +00:00
parent 434149c744
commit a7232276fe
1 changed files with 2 additions and 1 deletions
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crypto/ec/curve448/eddsa.c
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@ -64,7 +64,8 @@ static c448_error_t hash_init_with_dom(EVP_MD_CTX *hashctx, uint8_t prehashed,
if (context_len > UINT8_MAX)
return C448_FAILURE;
dom[0] = 2 + word_is_zero(prehashed) + word_is_zero(for_prehash);
dom[0] = (uint8_t)(2 - (prehashed == 0 ? 1 : 0)
- (for_prehash == 0 ? 1 : 0));
dom[1] = (uint8_t)context_len;
if (!EVP_DigestInit_ex(hashctx, EVP_shake256(), NULL)