CBC

acronym

cryptography

Stands for: Cipher Block Chaining

An older block-cipher mode that chains blocks together but provides no integrity on its own.

Cipher Block Chaining (NIST SP 800-38A) XORs each plaintext block with the previous ciphertext block before encrypting. It needs a separate MAC for integrity, and the order of those operations produced the BEAST, Lucky13, and POODLE attacks. TLS 1.3 drops CBC entirely.

Also known as: cbc

Sources

NIST SP 800-38A

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