Проверка подписи и оригинала файла about gostcryptography HOT 2 CLOSED

bool VerifySignature(GostAsymmetricAlgorithm publicKey, Stream dataStream, byte[] signature)
{
	byte[] hash;

	using (var hashAlg = publicKey.CreateHashAlgorithm())
	{
		hash = hashAlg.ComputeHash(dataStream);
	}

	var deformatter = new GostSignatureDeformatter(publicKey);

	return deformatter.VerifySignature(hash, signature);
}