/// <inheritdoc/>
public object Create(string algorithm, params object[] args)
{
if (IsSupportedAlgorithm(algorithm, args))
{
if (algorithm.Equals("EdDSA", StringComparison.OrdinalIgnoreCase))
{
var keyMaterial = args[0] as JsonWebKey;
if (keyMaterial != null)
{
//TODO: Probably should check a case where both are defined (or some other combinations).
AsymmetricKeyParameter?keyParameter = null;
if (keyMaterial.X != null)
{
var decodedPublicBytes = Base64UrlEncoder.DecodeBytes(keyMaterial.X);
keyParameter = new Ed25519PublicKeyParameters(decodedPublicBytes, 0);
}
else if (keyMaterial.D != null)
{
var decodedPrivateBytes = Base64UrlEncoder.DecodeBytes(keyMaterial.D);
keyParameter = new Ed25519PrivateKeyParameters(decodedPrivateBytes, 0);
}
else
{
throw new ArgumentException("Key material needs to be provided");
}
var securityKey = new BouncyCastleEdDsaSecurityKey(keyParameter, keyMaterial.Crv, this);
return(new BouncyCastleEdDsaSignatureProvider(securityKey, algorithm));
}
throw new ArgumentException($"The key material argument in position args[0] expected is \"{typeof(JsonWebKey)}\".");
}
}
throw new NotSupportedException();
}
/// <summary>
/// Default constructor for this signer.
/// </summary>
/// <param name="key">The key material.</param>
/// <param name="algorithm">The algorithm.</param>
public BouncyCastleEdDsaSignatureProvider(BouncyCastleEdDsaSecurityKey key, string algorithm) : base(key, algorithm, willCreateSignatures: key.PrivateKeyStatus == PrivateKeyStatus.Exists)
{
EdDsaKey = key;
}
