namespace System.Security.Cryptography { public abstract class MLKem : IDisposable { private delegate TResult ExportPkcs8PrivateKeyFunc<TResult> (ReadOnlySpan<byte> pkcs8); private delegate AsnWriter WriteEncryptedPkcs8Func<TChar> (ReadOnlySpan<TChar> password, AsnWriter writer, PbeParameters pbeParameters); public static bool IsSupported { get; } public MLKemAlgorithm Algorithm { get; } protected MLKem(MLKemAlgorithm algorithm); public static MLKem GenerateKey(MLKemAlgorithm algorithm); public void Encapsulate(Span<byte> ciphertext, Span<byte> sharedSecret); public void Encapsulate(out byte[] ciphertext, out byte[] sharedSecret); protected abstract void EncapsulateCore(Span<byte> ciphertext, Span<byte> sharedSecret); public void Decapsulate(ReadOnlySpan<byte> ciphertext, Span<byte> sharedSecret); public byte[] Decapsulate(byte[] ciphertext); protected abstract void DecapsulateCore(ReadOnlySpan<byte> ciphertext, Span<byte> sharedSecret); public void ExportPrivateSeed(Span<byte> destination); public byte[] ExportPrivateSeed(); protected abstract void ExportPrivateSeedCore(Span<byte> destination); public static MLKem ImportPrivateSeed(MLKemAlgorithm algorithm, ReadOnlySpan<byte> source); public static MLKem ImportPrivateSeed(MLKemAlgorithm algorithm, byte[] source); public static MLKem ImportDecapsulationKey(MLKemAlgorithm algorithm, ReadOnlySpan<byte> source); public static MLKem ImportDecapsulationKey(MLKemAlgorithm algorithm, byte[] source); public static MLKem ImportEncapsulationKey(MLKemAlgorithm algorithm, ReadOnlySpan<byte> source); public static MLKem ImportEncapsulationKey(MLKemAlgorithm algorithm, byte[] source); public void ExportDecapsulationKey(Span<byte> destination); public byte[] ExportDecapsulationKey(); protected abstract void ExportDecapsulationKeyCore(Span<byte> destination); public void ExportEncapsulationKey(Span<byte> destination); public byte[] ExportEncapsulationKey(); protected abstract void ExportEncapsulationKeyCore(Span<byte> destination); public bool TryExportSubjectPublicKeyInfo(Span<byte> destination, out int bytesWritten); public byte[] ExportSubjectPublicKeyInfo(); public string ExportSubjectPublicKeyInfoPem(); public bool TryExportPkcs8PrivateKey(Span<byte> destination, out int bytesWritten); public byte[] ExportPkcs8PrivateKey(); public string ExportPkcs8PrivateKeyPem(); protected abstract bool TryExportPkcs8PrivateKeyCore(Span<byte> destination, out int bytesWritten); public bool TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<char> password, PbeParameters pbeParameters, Span<byte> destination, out int bytesWritten); public bool TryExportEncryptedPkcs8PrivateKey(string password, PbeParameters pbeParameters, Span<byte> destination, out int bytesWritten); public bool TryExportEncryptedPkcs8PrivateKey(ReadOnlySpan<byte> passwordBytes, PbeParameters pbeParameters, Span<byte> destination, out int bytesWritten); public byte[] ExportEncryptedPkcs8PrivateKey(ReadOnlySpan<byte> passwordBytes, PbeParameters pbeParameters); public byte[] ExportEncryptedPkcs8PrivateKey(ReadOnlySpan<char> password, PbeParameters pbeParameters); public byte[] ExportEncryptedPkcs8PrivateKey(string password, PbeParameters pbeParameters); public string ExportEncryptedPkcs8PrivateKeyPem(ReadOnlySpan<byte> passwordBytes, PbeParameters pbeParameters); public string ExportEncryptedPkcs8PrivateKeyPem(ReadOnlySpan<char> password, PbeParameters pbeParameters); public string ExportEncryptedPkcs8PrivateKeyPem(string password, PbeParameters pbeParameters); public static MLKem ImportSubjectPublicKeyInfo(ReadOnlySpan<byte> source); public static MLKem ImportSubjectPublicKeyInfo(byte[] source); public static MLKem ImportPkcs8PrivateKey(ReadOnlySpan<byte> source); public static MLKem ImportPkcs8PrivateKey(byte[] source); public static MLKem ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<byte> passwordBytes, ReadOnlySpan<byte> source); public static MLKem ImportEncryptedPkcs8PrivateKey(ReadOnlySpan<char> password, ReadOnlySpan<byte> source); public static MLKem ImportEncryptedPkcs8PrivateKey(string password, byte[] source); public static MLKem ImportFromPem(ReadOnlySpan<char> source); public static MLKem ImportFromPem(string source); public static MLKem ImportFromEncryptedPem(ReadOnlySpan<char> source, ReadOnlySpan<char> password); public static MLKem ImportFromEncryptedPem(ReadOnlySpan<char> source, ReadOnlySpan<byte> passwordBytes); public static MLKem ImportFromEncryptedPem(string source, string password); public static MLKem ImportFromEncryptedPem(string source, byte[] passwordBytes); public void Dispose(); protected virtual void Dispose(bool disposing); } }