MARKUS

using NetSparkleUpdater.SignatureVerifiers;

using Org.BouncyCastle.Crypto;

using Org.BouncyCastle.Crypto.Generators;

using Org.BouncyCastle.Crypto.Parameters;

using Org.BouncyCastle.Crypto.Signers;

using Org.BouncyCastle.Security;

using System;

using System.Collections.Generic;

using System.Text;

using Xunit;

namespace NetSparkleUnitTests

{

    public class Ed25519Tests

    {

        private static readonly SecureRandom Random = new SecureRandom();

        [Fact]

        public void CanValidateSignature()

        {

            Ed25519KeyPairGenerator kpg = new Ed25519KeyPairGenerator();

            kpg.Init(new Ed25519KeyGenerationParameters(Random));

            AsymmetricCipherKeyPair kp = kpg.GenerateKeyPair();

            Ed25519PrivateKeyParameters privateKey = (Ed25519PrivateKeyParameters)kp.Private;

            Ed25519PublicKeyParameters publicKey = (Ed25519PublicKeyParameters)kp.Public;

            var pubKeyBase64 = Convert.ToBase64String(publicKey.GetEncoded());

            // create signature for item

            byte[] msg = new byte[Random.NextInt() & 255];

            Random.NextBytes(msg);

            var signer = new Ed25519Signer();

            signer.Init(true, privateKey);

            signer.BlockUpdate(msg, 0, msg.Length);

            byte[] signature = signer.GenerateSignature();

            var signatureForAppCast = Convert.ToBase64String(signature);

            // verify signature

            var checker = new Ed25519Checker(NetSparkleUpdater.Enums.SecurityMode.Strict, pubKeyBase64);

            Assert.True(checker.VerifySignature(signatureForAppCast, msg) == NetSparkleUpdater.Enums.ValidationResult.Valid);

        }

    }

}