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ecmult_gen: Simplify code (no observable change)

This commit is contained in:
Tim Ruffing 2022-07-05 18:50:05 +02:00
parent 4cc0b1b669
commit 7a86955800
1 changed files with 1 additions and 2 deletions
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3
src/ecmult_gen_impl.h
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@ -97,12 +97,11 @@ static void secp256k1_ecmult_gen_blind(secp256k1_ecmult_gen_context *ctx, const
return;
}
/* The prior blinding value (if not reset) is chained forward by including it in the hash. */
secp256k1_scalar_get_b32(nonce32, &ctx->blind);
secp256k1_scalar_get_b32(keydata, &ctx->blind);
/** Using a CSPRNG allows a failure free interface, avoids needing large amounts of random data,
* and guards against weak or adversarial seeds. This is a simpler and safer interface than
* asking the caller for blinding values directly and expecting them to retry on failure.
*/
memcpy(keydata, nonce32, 32);
VERIFY_CHECK(seed32 != NULL);
memcpy(keydata + 32, seed32, 32);
secp256k1_rfc6979_hmac_sha256_initialize(&rng, keydata, 64);