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TLS | Computer Security

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TLS (Transport Layer Security) is a protocol that provides an end-to-end encrypted communication channel. (You may sometimes see SSL, which is the old, deprecated version of TLS.) End-to-end encryption guarantees that even if any one part of the communication chain is compromised (for example, if the packet passes through a malicious AS), no one except the sender and receiver is able to read or modify the data being sent. The original OSI 7-layer model did not consider security, so TLS is usually referred to as a layer 6.5 protocol. It is built on top of layer 4 TCP (layers 5 and 6 are obsolete), and it is used to provide secure communications to layer 7 applications. Examples of applications that use TLS are HTTP, which is renamed HTTPS if TLS is used; SMTP (Simple Mail Transport Protocol), which uses the STARTTLS command to enable TLS on emails; and VPN (Virtual Private Network) connections, which encrypt the user’s traffic. TLS relies on TCP to guarantee that messages are delivered

TLS | Computer Security Skip to main content Menu Expand (external link) Document Search Copy Copied Computer Security 31. TLS TLS ( Transport Layer Security ) is a protocol that provides an end-to-end encrypted communication channel. (You may sometimes see SSL , which is the old, deprecated version of TLS.) End-to-end encryption guarantees that even if any one part of the communication chain is compromised (for example, if the packet passes through a malicious AS), no one except the sender and receiver is able to read or modify the data being sent. The original OSI 7-layer model did not consi

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