public static Message DecodeFromString(string messageData)
{
JSON message = new JSON();
// We need to figure out if this is the compact or one of the JSON encoded versions.
// We guess this is going to be based on the first character - either it is a '{' or something else
if (messageData[0] == '{')
{
message = JSON.Parse(messageData);
}
else
{
// Split the string based on periods
string[] rgData = messageData.Split('.');
if (rgData.Length == 3)
{
message = new JSON();
if (rgData[1].Length > 0)
{
message.Add("payload", rgData[1]);
}
JSON signature = new JSON();
signature.Add("protected", rgData[0]);
signature.Add("signature", rgData[2]);
JSON sigs = new JSON();
sigs.Add(signature);
message.Add("signatures", sigs);
}
else if (rgData.Length == 5)
{
message = new JSON();
message.Add("protected", rgData[0]);
message.Add("iv", rgData[2]);
message.Add("ciphertext", rgData[3]);
message.Add("tag", rgData[4]);
JSON recip = new JSON();
recip.Add("encrypted_key", rgData[1]);
JSON recips = new JSON();
recips.Add(recip);
message.Add("recipients", recips);
}
}
if (message.ContainsKey("iv"))
{
EncryptMessage msgx = new EncryptMessage();
msgx.DecodeFromJSON(message);
return(msgx);
}
return(new SignMessage(message));
}
public static Message DecodeFromJSON(JSON message)
{
if (message.ContainsKey("iv"))
{
EncryptMessage msgx = new EncryptMessage();
msgx.DecodeFromJSON(message);
return(msgx);
}
return(new SignMessage(message));
}