下面是一个签名和验证的工作示例--没有什么是一点类型转换不能解决的！
我发现有用的链接：

1. Bouncy Castle Sign and Verify SHA256 Certificate With C#
2. How to generate Private key from string using BouncyCastle
3. Bouncy Castle C# - getting public key object from byte array
4. https://github.com/CryptoKass/dilithium/blob/master/src/main/java/org/dilithium/Start.java
5. https://github.com/rodbate/bouncycastle-examples/blob/master/src/main/java/chapter2/KeyGeneratorExample.java
6. https://github.com/bcgit/bc-csharp/blob/master/crypto/src/pqc/crypto/crystals/kyber/KyberEngine.cs
   我需要将键维护为Dilithium...KeyParameters，而不是byte[] s或ICypherKeyParameters。这使我可以访问正确的Rho, K, etc.属性和GetEncoded()方法。

public static void Test ()
{
    AsymmetricCipherKeyPair keyPair1 = Generate();
    AsymmetricCipherKeyPair keyPair2 = Generate();

    byte[] message = Encoding.UTF8.GetBytes("Important Message!");
    byte[] signature = Sign((DilithiumPrivateKeyParameters) keyPair1.Private, message);

    // Returns TRUE
    bool check1 = Verify((DilithiumPublicKeyParameters) keyPair1.Public, message, signature);
    // Returns FALSE (as expected)
    bool check2 = Verify((DilithiumPublicKeyParameters) keyPair2.Public, message, signature);
}

public static AsymmetricCipherKeyPair Generate ()
{
    DilithiumKeyPairGenerator generator = new DilithiumKeyPairGenerator();
    generator.Init(new DilithiumKeyGenerationParameters(
        new SecureRandom(),
        DilithiumParameters.Dilithium5Aes
        ));

    AsymmetricCipherKeyPair keyPair = generator.GenerateKeyPair();

    return keyPair;
}

public static byte[] Sign (DilithiumPrivateKeyParameters privateKey, byte[] message)
{
    DilithiumSigner signer = new DilithiumSigner();

    // What do I put in all these parameters?
    signer.Init(true, new DilithiumPrivateKeyParameters(
        DilithiumParameters.Dilithium5Aes,
                privateKey.Rho,
                privateKey.K,
                privateKey.Tr,
                privateKey.S1,
                privateKey.S2,
                privateKey.T0,
                privateKey.T1
        ));

    byte[] signature = signer.GenerateSignature(message);
    return signature;
}

public static bool Verify (DilithiumPublicKeyParameters publicKey, byte[] message, byte[] signature)
{
    DilithiumSigner verifier = new DilithiumSigner();

    // The constructor asks for "pkEncoded" - how should the bytes be encoded?
    verifier.Init(false, new DilithiumPublicKeyParameters(
        DilithiumParameters.Dilithium5Aes,
        publicKey.GetEncoded()
        ));

    return verifier.VerifySignature(message, signature);
}