An advanced class of optical fibres are the photonic fibres. Due to their ability to confine light in hollow cores, they achieve high sensitivity and effectiveness. The Journal of Telecommunication Systems & Management is a peer-reviewed, open-access journal. The first basic parameter of a TLS protocol is Content type. This record defines the changecipherspec message, alert, handshake, application and heartbeat. The version type defines the high and low versions of the TLS that can be supported between the client and the server. The length specifies the length of the protocol message, to not exceed more than 16 kilobytes. The protocol messages may or may not be encrypted depending on the state of the connection. MAC is message authentication code that is sent along with the protocol message that specifies an additional key stating that future messages will have to be first confirmed with MAC. The handshake protocol forms a platform to setup the TLS session unless interrupted by a warning or alert protocol. The message type parameter identifies the handshake message type as: HelloRequest, ClientHello, ServerHello, NewSessionTicket, Certificate, ServerKeyExchange, CertificateRequest, ServerHelloDone, CertificateVerify, ClientKeyExchange and Finished. Alert protocol alerts the session as not being reliable and could be terminated. The different levels of alert level types are: warning and fatal. In case of a fatal alert, the session is terminated automatically. In the case of warning alert, the user may or may not terminate the session. Some of the descriptions of alert level type are: unexpected message, bad record MAC, decryption failed, etc. The latest version of TLS is TLS 1.2 that has various extensions for different situations requiring additional or a variation of the ordinary TLS protocol to regulate security.
Last date updated on October, 2020