private byte[] WriteToDataWriter()
{
SSH2DataWriter wr = new SSH2DataWriter();
wr.WriteString(SSH2Util.PublicKeyAlgorithmName(_hostkey.Algorithm));
if (_hostkey.Algorithm == PublicKeyAlgorithm.RSA)
{
RSAPublicKey rsa = (RSAPublicKey)_hostkey;
wr.WriteBigInteger(rsa.Exponent);
wr.WriteBigInteger(rsa.Modulus);
}
else if (_hostkey.Algorithm == PublicKeyAlgorithm.DSA)
{
DSAPublicKey dsa = (DSAPublicKey)_hostkey;
wr.WriteBigInteger(dsa.P);
wr.WriteBigInteger(dsa.Q);
wr.WriteBigInteger(dsa.G);
wr.WriteBigInteger(dsa.Y);
}
else
{
throw new SSHException("Host key algorithm is unsupported");
}
return(wr.ToByteArray());
}
public byte[] GetPublicKeyBlob()
{
SSH2DataWriter w = new SSH2DataWriter();
w.WriteString(SSH2Util.PublicKeyAlgorithmName(_keypair.Algorithm));
_keypair.PublicKey.WriteTo(w);
return(w.ToByteArray());
}
public override string DumpHostKeyInKnownHostsStyle()
{
StringBuilder bld = new StringBuilder();
bld.Append(SSH2Util.PublicKeyAlgorithmName(_hostkey.Algorithm));
bld.Append(' ');
bld.Append(Encoding.ASCII.GetString(Base64.Encode(WriteToDataWriter())));
return(bld.ToString());
}
private string FormatBase64EncodedPublicKeyBody()
{
SSH2DataWriter wr = new SSH2DataWriter();
wr.WriteString(SSH2Util.PublicKeyAlgorithmName(_keypair.Algorithm));
_keypair.PublicKey.WriteTo(wr);
return(Encoding.ASCII.GetString(Base64.Encode(wr.ToByteArray())));
}
public void WritePublicPartInOpenSSHStyle(Stream dest)
{
StreamWriter sw = new StreamWriter(dest, Encoding.ASCII);
sw.Write(SSH2Util.PublicKeyAlgorithmName(_keypair.Algorithm));
sw.Write(' ');
sw.WriteLine(FormatBase64EncodedPublicKeyBody());
sw.Close();
}