MethodNotSupported exception signing stream

[ploef]

Hi,

I'm trying to sign a stream using the following code. Unfortunately I' getting a "MethodNotSupported" exception executing the "SignStreamAsync" method.

 EncryptionKeys encryptionKeys;

            using (Stream privateKeyStream = new MemoryStream(Encoding.UTF8.GetBytes(_settings.PgpSignKeyFile)))
            {
                encryptionKeys = new EncryptionKeys(privateKeyStream, _settings.PgpSignKeyPassword);      
            }

            var pgp = new PGP(encryptionKeys);

            using (Stream outputFileStream = new MemoryStream())
            {
                await pgp.SignStreamAsync(stream, outputFileStream);
            }

[mattosaurus]

Hi,

Does it work if you follow the code example in the readme?

https://github.com/mattosaurus/PgpCore#signstreamasync

If not it might be a bug. I'm on holiday at the moment but can take a look at it in a couple of weeks if so.

[ploef]

Hi,

Thanks for the quick response during your holiday! Yes, I used that example as a starting point. But for now have a nice time!

[mattosaurus]

Hi, without seeing the rest of your code I'm not sure what the issue might be but the below works for me that's based on your code.

internal class Program
{
    static void Main(string[] args)
    {
        try
        {             
            MainAsync(args).GetAwaiter().GetResult();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }

    static async Task MainAsync(string[] args)
    {
        string inputFilePath = @"C:\TEMP\Content\content.txt";
        string publicKeyFilePath = @"C:\Temp\public.asc";
        string privateKeyFilePath = @"C:\Temp\private.asc";
        string passPhrase = "password";

        PGP pgpKeys = new PGP();
        await pgpKeys.GenerateKeyAsync(publicKeyFilePath, privateKeyFilePath, password: passPhrase);

        EncryptionKeys encryptionKeys;

        using (Stream privateKeyStream = new MemoryStream(Encoding.UTF8.GetBytes(File.ReadAllText(privateKeyFilePath))))
        {
            encryptionKeys = new EncryptionKeys(privateKeyStream, passPhrase);
        }

        var pgp = new PGP(encryptionKeys);

        using (Stream inputFileStream = new MemoryStream(Encoding.UTF8.GetBytes(File.ReadAllText(inputFilePath))))
        using (Stream outputFileStream = new MemoryStream())
        {
            await pgp.SignStreamAsync(inputFileStream, outputFileStream);
        }
    }
}

If you can share a full example of you're non-working code I'll take a look in more detail.