fcp_cryptoauth 0.4.0

Implementation of the Futuristic Connectivity Protocol's CryptoAuth layer (cryptographic authentication and encryption over unreliable channels).
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/// Enumeration used for reporting errors in authenticating
/// a handshake or a data packet.
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum AuthFailure {
    /// An incoming peer tried an auth method that is not None/Password/LoginPassword
    UnknownAuthMethod(u8),
    /// An incoming peer tried to connect with None auth.
    AuthNone,
    /// An incoming peer tried to connect with credentials unknown to us.
    InvalidCredentials(String),
    /// A peer used a public key different than expected.
    WrongPublicKey,
    /// The packet type does not match the session state.
    UnexpectedPacket(String),
    /// The packet was too short to be decrypted (handshake of size < 120,
    /// or data of size < 28)
    PacketTooShort(String),
    /// The packet had a bad format or its auth code was invalid.
    CorruptedPacket(String),
    /// The packet's nonce is way lower than the max packet nonce
    /// (ie. difference > 64) seen so far.
    LatePacket,
    /// This packet was already received (detected using the nonce as a packet id)
    Replay,
}