pub fn fn_sign_transcript(
    server_random: &Random,
    server_ecdh_pubkey: &Vec<u8>,
    transcript: &HandshakeHash,
    group: &NamedGroup,
    client_random: &Random,
    suite: &CipherSuite,
) -> Result<Vec<u8>, FnError>pub fn fn_sign_transcript(
    server_random: &Random,
    server_ecdh_pubkey: &Vec<u8>,
    transcript: &HandshakeHash,
    group: &NamedGroup,
    client_random: &Random,
    suite: &CipherSuite,
) -> Result<Vec<u8>, FnError>