Polls

Ask poll question:

{type: poll,
Question:"question",
Options: [x, y, z],
Encrypt answers?
EncryptionKey: CryptoKey
HashedSecret: some value hashed // hashing is much cheaper than decryption, so to trust if/when the decryption key is valid, they have to prove they know some secret before we try to decrypt using their key. This is mainly to prevent an attacker providing bogus decryption keys.
}

Answer Poll Question:
{Type: poll_response,
Poll:internal nullifier,
Answer: encrypted answer}

Pollster presses "reveal answers to everyone"
Poll decryption key broadcast:
{
Type: poll_key,
Decryption key,
Secret}