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Simplify some code

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The original curve448 code was templated to allow for a 25519
implementation. We've just imported the 448 stuff - but a remnant of
the original templated approach remained. This just simplifies that.

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 13:40:56 +00:00
parent a7232276fe
commit 9c9d6ff41c
1 changed files with 2 additions and 10 deletions
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12
crypto/ec/curve448/eddsa.c
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@ -40,17 +40,9 @@ static c448_error_t oneshot_hash(uint8_t *out, size_t outlen,
static void clamp(uint8_t secret_scalar_ser[EDDSA_448_PRIVATE_BYTES])
{
uint8_t hibit = (1 << 0) >> 1;
/* Blarg */
secret_scalar_ser[0] &= -COFACTOR;
if (hibit == 0) {
secret_scalar_ser[EDDSA_448_PRIVATE_BYTES - 1] = 0;
secret_scalar_ser[EDDSA_448_PRIVATE_BYTES - 2] |= 0x80;
} else {
secret_scalar_ser[EDDSA_448_PRIVATE_BYTES - 1] &= hibit - 1;
secret_scalar_ser[EDDSA_448_PRIVATE_BYTES - 1] |= hibit;
}
secret_scalar_ser[EDDSA_448_PRIVATE_BYTES - 1] = 0;
secret_scalar_ser[EDDSA_448_PRIVATE_BYTES - 2] |= 0x80;
}
static c448_error_t hash_init_with_dom(EVP_MD_CTX *hashctx, uint8_t prehashed,