public void WhenAlgorithmIsSupported_ReturnsExpectedAlgorithm(string algorithm, string expectedType)
{
var actual = HashAlgorithmFactory.Create(new HashAlgorithmName(algorithm));
actual.Should().NotBeNull();
actual.GetType().Name.Should().Be(expectedType);
}
public byte[] ComputeHash(string contentToSign)
{
var inputBytes = Encoding.UTF8.GetBytes(contentToSign);
using (var hasher = HashAlgorithmFactory.Create(HashAlgorithm)) {
var hashedData = hasher.ComputeHash(inputBytes);
return(_rsa.SignHash(hashedData, HashAlgorithm, RSASignaturePadding.Pkcs1));
}
}
public bool VerifySignature(string contentToSign, byte[] signature)
{
if (contentToSign == null)
{
throw new ArgumentNullException(nameof(contentToSign));
}
if (signature == null)
{
throw new ArgumentNullException(nameof(signature));
}
var signedBytes = Encoding.UTF8.GetBytes(contentToSign);
using (var hasher = HashAlgorithmFactory.Create(HashAlgorithm)) {
var hashedData = hasher.ComputeHash(signedBytes);
return(_rsa.VerifyHash(hashedData, signature, HashAlgorithm, RSASignaturePadding.Pkcs1));
}
}
public void WhenAlgorithmIsNotSupported_ThrowsNotSupportedException()
{
Action act = () => HashAlgorithmFactory.Create(new HashAlgorithmName("unsupported"));
act.Should().Throw <NotSupportedException>();
}
public void WhenAlgorithmIsEmpty_ThrowsArgumentException()
{
Action act = () => HashAlgorithmFactory.Create(new HashAlgorithmName());
act.Should().Throw <ArgumentException>();
}
/// <summary>
/// Creates a new <see cref="ECDsaSignatureAlgorithm" />.
/// </summary>
/// <param name="hashAlgorithm">The name of the hash algorithm to use.</param>
/// <param name="ecdsa">The Elliptic Curve Digital Signature Algorithm.</param>
public ECDsaSignatureAlgorithm(HashAlgorithmName hashAlgorithm, ECDsa ecdsa)
{
HashAlgorithm = hashAlgorithm;
_ecdsa = ecdsa ?? throw new ArgumentNullException(nameof(ecdsa));
_hasherPool = PoolProvider.Create(new PooledHashAlgorithmPolicy(() => HashAlgorithmFactory.Create(HashAlgorithm)));
}