翻訳と辞書 Words near each other ・ Key deer ・ Key demographic ・ Key derivation function ・ KEY Difference ・ Key disclosure law ・ Key distribution ・ Key distribution center ・ Key distribution in wireless sensor networks ・ Key Elementary School ・ Key encapsulation ・ Key Energy Services ・ Key escrow ・ Key Exchange ・ Key exchange ・ Key Falls ・ Key feedback mode ・ Key Field Air National Guard Base ・ Key figures in the Green Party of England and Wales ・ Key finder ・ Key Food ・ Key for Life ・ Key Force ・ Key frame ・ Key generation ・ Key generator ・ Key Gin ・ Key gnaphosid spider ・ Key grip ・ Key Habitat Site ・ Key Haven, Florida Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Key feedback mode ： ウィキペディア英語版 Key feedback mode In cryptography key feedback mode (KFB) is a mode of operation for cryptographic block ciphers. It uses the block cipher output block to form the block cipher key of the next round, thereby creating a keystream generator that can be used as a synchronous stream cipher. ==Operation== KFB mode outputs m bits (typically m = 8) at a time and uses a constant bitstring p as block cipher input, a key k of n bit length, and a n × m matrix with non-zero rows as IV. It is possible to reduce the size of the matrix and it does not need to be secret but must be random. If the output block size of the block cipher is not equal to the key size, a function is needed to form a valid key from the output block. The speed of KFB is a bit lower than for other modes of operation like OFB, mainly because the key schedule has to been done for each key. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Key feedback mode」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.