.NET Developer Platform Security in-depth

January 29, 2002

Practical Aspects of Modern Cryptography

Cipher Integrity

nWhen using block ciphers in CBC mode, there is generally a built-in integrity check.

nHowever, when using block ciphers in ECB mode or (especially) when using stream ciphers, an external integrity check is crucial.

nSuch an integrity check is called a Message Authentication Code (MAC).