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TLS is an abbreviation of Transport Layer Security. Transport Layer Security (TLS) is a protocol that ensures privacy between communicating applications and their users on the Internet. When a server and client communicate, TLS ensures that no third party may eavesdrop or tamper with any message. TLS is the successor to the SSL.
TLS is composed of two layers:
- TLS Record Protocol
- TLS Handshake Protocol.
TLS Record Protocol
The TLS Record Protocol provides connection security with some encryption method such as the Data Encryption Standard (DES). The TLS Record Protocol can also be used without encryption.
TLS Handshake Protocol
The TLS Handshake Protocol allows the server and client to authenticate each other and to negotiate an encryption algorithm and cryptographic keys before data is exchanged.