pub fn decode_plaintext_2(
plaintext_2: &BufferCiphertext2,
) -> Result<(ConnId, IdCred, BytesMac2, Option<EADItem>), EDHOCError>pub fn decode_plaintext_2(
plaintext_2: &BufferCiphertext2,
) -> Result<(ConnId, IdCred, BytesMac2, Option<EADItem>), EDHOCError>