CatSdkを使って署名する例

SignByCatSdk.cs

var source = @"
using System;
using CatSdk.Symbol;
using CatSdk.Utils;
using CatSdk.CryptoTypes;
public class SymbolSdk
{
 public static Signature Sign(string message)
    {
        var keiPair = new KeyPair(new PrivateKey(""5DB8324E7EB83E7665D500B014283260EF312139034E86DFB7EE736503E*****""));
        var sig = keiPair.Sign(Converter.Utf8ToBytes(message));
        return sig;
    }
}
";

var options = CSharpParseOptions.Default
    .WithLanguageVersion(LanguageVersion.CSharp8);

var syntaxTree = CSharpSyntaxTree.ParseText(source, options, "MyRandom.cs");

var references = new MetadataReference[]
{
    MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
    MetadataReference.CreateFromFile(typeof(Converter).Assembly.Location),
    MetadataReference.CreateFromFile(typeof(Signature).Assembly.Location),
    MetadataReference.CreateFromFile(Assembly.LoadFrom("CatSdk.dll").Location),
    MetadataReference.CreateFromFile("/Users/matsukawatoshiya/Downloads/netstandard/netstandard.dll"),
    MetadataReference.CreateFromFile("/Users/matsukawatoshiya/Downloads/System.Runtime/System.Runtime.dll"),
};

var compilationOptions = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);

var compilation = CSharpCompilation.Create(
    "SymbolSdk.dll",
    new[] { syntaxTree },
    references,
    compilationOptions);

using var stream = new MemoryStream();
var emitResult = compilation.Emit(stream);

if (emitResult.Success)
{
    stream.Seek(0, SeekOrigin.Begin);
    var assembly = AssemblyLoadContext.Default.LoadFromStream(stream);
    var randomType = assembly.GetType("SymbolSdk");
    var method = randomType.GetMethod("Sign");
    var result = (Signature)(method.Invoke(null, new object[]{"HELLO"}) ?? throw new InvalidOperationException());
    Console.WriteLine($"Signature: {result}");
    var keiPair = new KeyPair(new PrivateKey("5DB8324E7EB83E7665D500B014283260EF312139034E86DFB7EE736503E*****"));
    var verifier = new Verifier(keiPair.PublicKey);
    var signature = new Signature(result.bytes);
    var verify = verifier.Verify("HELLO", signature);
    Console.WriteLine($"Verify: {verify}");
}
else
{
    var failures = emitResult.Diagnostics.Where(diagnostic =>
        diagnostic.IsWarningAsError ||
        diagnostic.Severity == DiagnosticSeverity.Error);

    foreach (var diagnostic in failures)
    {
        Console.Error.WriteLine("{0}: {1}", diagnostic.Id, diagnostic.GetMessage());
    }
}