static Com.AugustCellars.JOSE.Recipient GetRecipient(CBORObject control)
{
Com.AugustCellars.JOSE.JWK key;
if (!control.ContainsKey("alg"))
{
throw new Exception("Recipient missing alg field");
}
if (control.ContainsKey("key"))
{
key = new Com.AugustCellars.JOSE.JWK(control["key"]);
}
else if (control.ContainsKey("pwd"))
{
key = new Com.AugustCellars.JOSE.JWK();
key.Add("kty", "oct");
key.Add("k", Com.AugustCellars.JOSE.Message.base64urlencode(Encoding.UTF8.GetBytes(control["pwd"].AsString())));
}
else
{
throw new Exception("No key defined for a recipient");
}
Com.AugustCellars.JOSE.Recipient recipient = new Com.AugustCellars.JOSE.Recipient(key, control["alg"].AsString());
// Double check that alg is the same as in the attributes
recipient.ClearProtected();
recipient.ClearUnprotected();
if (control.ContainsKey("protected"))
{
AddAttributes(recipient, control["protected"], 0);
}
if (control.ContainsKey("unprotected"))
{
AddAttributes(recipient, control["unprotected"], 1);
}
if (control.ContainsKey("sender_key"))
{
Com.AugustCellars.JOSE.JWK myKey = new Com.AugustCellars.JOSE.JWK(control["sender_key"]);
recipient.SetSenderKey(myKey);
}
return(recipient);
}
