TLS or Transport Layer Security – How this works

TLS is the next generation of the SSL Certificate: it allows and guarantees the exchange of data in a secure and private environment between two entities, the user and the server, through applications such as HTTP, POP3, IMAP, etc. We refer to TLS as the evolution of SSL since it is based on the latter certificate and works in a very similar way, basically: it encrypts the shared information.

The concern of users about the loss of privacy on the Internet is real: every day we hear stories about theft of information, photos, relevant documents. That is why it is essential to be safe when you surf the net and when you interact in it. From viewing pages, downloading documents and communicating via email: security is essential.

How the TLS or Transport Layer Security protocol works

This peotocol works by means of two protocols in different layers: the authentication protocol (called TLS Record Protocol) and the mutual agreement (also known as TLS Handshake Protocol).

▸Protocol Record: Authentication is carried out so that data transmission is through a private and reliable connection (encryption and sender-receiver integrity are negotiated)

▸Handshake Protocol: The message is negotiated securely. In each message the protocol is specified in a field (called content_type) and it is encrypted and packed with an authentication code (or MAC).

In this TLS protocol, a secure and encrypted channel is carried out between client and server where the cryptography of the message is negotiated, the encryption keys are authenticated and a secure transmission is carried out unlike the TLS protocol that is used. It is distinguished by security with interoperability (encrypted data transmissions from different applications such as HTTP, which becomes HTTPS).

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