cipher feedback

[¦sī·fər ¦fēd‚bak] (communications) An implementation of ciphertext autokey cipher in which the leftmost n bits of the data encryption standard (DES) output are added by the EXCLUSIVE OR operation to N bits of plaintext to produce N bits of ciphertext (where N is the number of bits enciphered at one time), and these N bits of ciphertext are fed back into the algorithm by first shifting the current DES input N bits to the left, and then appending the N bits of ciphertext to the right-hand side of the shifted input to produce a new DES input used for the next iteration of the algorithm.

单词	cipher feedback
释义	cipher feedback cipher feedback [¦sī·fər ¦fēd‚bak] (communications) An implementation of ciphertext autokey cipher in which the leftmost n bits of the data encryption standard (DES) output are added by the EXCLUSIVE OR operation to N bits of plaintext to produce N bits of ciphertext (where N is the number of bits enciphered at one time), and these N bits of ciphertext are fed back into the algorithm by first shifting the current DES input N bits to the left, and then appending the N bits of ciphertext to the right-hand side of the shifted input to produce a new DES input used for the next iteration of the algorithm. See CFB See CFB
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