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Cyber Security Academy · Lesson

Cipher Suites

Negotiate encryption.

What Is a Cipher Suite?

A cipher suite is a named combination of cryptographic algorithms that a TLS connection uses together.

During the handshake, client and server negotiate which suite to use from a shared list.

Anatomy of a Suite Name

A TLS 1.2 suite name packs several algorithms together.

For example: ECDHE_RSA_WITH_AES_128_GCM_SHA256.

  • ECDHE = key exchange
  • RSA = authentication
  • AES_128_GCM = bulk encryption
  • SHA256 = message authentication / PRF

All lessons in this course

  1. The TLS Handshake
  2. Cipher Suites
  3. Certificate Validation
  4. Common TLS Attacks
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