namespace Org.BouncyCastle.Crypto.Utilities { public static class Lib25519 { public static readonly int DHBytes; public static readonly int DHPublicKeyBytes; public static readonly int DHSecretKeyBytes; public static readonly int SignBytes; public static readonly int SignPublicKeyBytes; public static readonly int SignSecretKeyBytes; public static void DH(Span<byte> k, ReadOnlySpan<byte> pk, ReadOnlySpan<byte> sk); public static void DHKeyPair(Span<byte> pk, Span<byte> sk); public static void Sign(Span<byte> sm, out int smlen, ReadOnlySpan<byte> m, ReadOnlySpan<byte> sk); public static void SignKeyPair(Span<byte> pk, Span<byte> sk); public static bool SignOpen(Span<byte> m, out int mlen, ReadOnlySpan<byte> sm, ReadOnlySpan<byte> pk); } }