decryptMessageFromReader
Deprecated
Applications should use PresentationSession and implement encryption/decryption themselves.
Decrypt a message received from the reader.
In order for this to work, setSessionTranscript and setReaderEphemeralPublicKey must have already been called.
Return
decrypted message.
Parameters
messageCiphertext
encrypted message to decrypt.
Throws
if the ciphertext couldn't be decrypted.