pub fn decrypt(dec_key: P256Scalar, ctx: Ciphertext) -> Result<Plaintext, Error>Expand description
To decrypt an Elgamal ciphertext, the holder of the decryption key can multiply the auxillary component of the ciphertext by the decryption key, thus reproducing the blinding element that was calculated during encryption. Adding the negation of this blinding to the blinded message component of the ciphertext recovers the encrypted message.