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SynAc
Term

cipher block chaining

A block cipher mode that enhances ECB mode by chaining together blocks of cipher text it produces. [FP081] (See: block cipher, [R1829], [R2405], [R2451], [SP38A].)

Senses

(N)

A block cipher mode that enhances ECB mode by chaining together blocks of cipher text it produces. [FP081] (See: block cipher, [R1829], [R2405], [R2451], [SP38A].)

Tutorial: This mode operates by combining (exclusive OR-ing) the algorithm's ciphertext output block with the next plaintext block to form the next input block for the algorithm.

References
  • IETF RFC 4949 (Internet Security Glossary)Jan 06, 2026
    RFC 4949 — Internet Security Glossary (Version 2)
    https://www.rfc-editor.org/rfc/rfc4949.txt
    RFC 4949 is published by the IETF Trust and marked as "Distribution of this memo is unlimited". Verify IETF Trust copyright/licensing terms for reuse.
    Source: IETF RFC 4949 (rfc-editor.org).