An ElGamal ciphertext.
An ElGamal decryption key (also called a private key in other implementations).
An ElGamal encryption key (also called a public key in other implementations). To create a new encryption key, see DecryptionKey.
The group generator as a single point. If you're trying to create a scalar multiple of the generator, you probably want GENERATOR_TABLE instead.
The group generator as a table of precomputed multiples. This is the most efficient way to produce a scalar multiple of the generator.