Multiple encryption: Difference between revisions

Revision as of 19:35, 2 July 2024

Revision as of 11:50, 4 October 2024

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'''Multiple encryption''' is the process of [[encryption|encrypting]] an already encrypted message one or more times, either using the same or a different algorithm. It is also known as '''cascade encryption''', '''cascade ciphering''', '''multiple encryption''', and '''superencipherment'''. '''Superencryption''' refers to the outer-level encryption of a multiple encryption.

Some cryptographers, like Matthew Green of Johns Hopkins University, say multiple encryption addresses a problem that mostly doesn't exist:

{{Blockquote
|text = ''Modern ciphers rarely get broken... You’re far more likely to get hit by malware or an implementation bug than you are to suffer a catastrophic attack on AES''.<ref>{{cite web |last=Green |first=Matthew
|title=Multiple Encryption
|urlsource=https://blog.cryptographyengineering.com/2012/02/02/multiple-encryption/ |date=(February 2, 2012)}}</ref>
However, ....from andthe in thatprevious quote liesan the reasonargument for multiple encryption can be made, namely poor implementation. Using two different cryptomodules and keying processes from two different vendors requires both vendors' wares to be compromised for security to fail completely.

==Independent keys==