// In the shuffle phase, we have to receive a set of strings from the previous player and
// decrypt them all.
final Message decryptAll(Message message, DecryptionKey key, int expected)
throws IOException, InterruptedException, FormatException {
Message decrypted = messages.make();
int count = 0;
Set<String> addrs = new HashSet<>(); // Used to check that all addresses are different.
while (!message.isEmpty()) {
String encrypted = message.readString();
message = message.rest();
addrs.add(encrypted);
count++;
decrypted = decrypted.attach(key.decrypt(encrypted));
}
if (addrs.size() != count || count != expected) {
phase.set(Phase.Blame);
mailbox.broadcast(
messages.make().attach(Blame.ShuffleFailure(players.get(N))), phase.get());
return null;
}
return decrypted;
}
