public void IssueNewKey()
{
var masterkey = Key.CreateFromBytes("masterkey", CryptUtil.CreateRandomBytesForKey());
var keyRing = new Secrets();
keyRing.Keys.Add(Secrets.IssueKey("user_key_1", masterkey));
keyRing.Keys.Add(Secrets.IssueKey("user_key_2", masterkey));
}