Meanings
nounFeistel cipher (plural Feistel ciphers)
plural Feistel ciphers
- computingA symmetric structure used in the construction of block ciphers. It is an iterated cipher with an internal function called a round function.
Synonyms: Feistel network
Synonyms & antonyms
nounA symmetric structure used in the construction of block ciphers. It is an iterated cipher with an internal function called a round function.
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Origin
Named after the German-born physicist and cryptographer Horst Feistel.
Full word history & related roots →Cite this entry
APA
Feistel cipher. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Feistel%20cipher
MLA
“Feistel cipher.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Feistel%20cipher. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Feistel cipher,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Feistel%20cipher.
Source: Feistel cipher on Wiktionary, CC BY-SA 4.0.