翻訳と辞書 Words near each other ・ Cryptonemiales ・ Cryptonephridium ・ Cryptonevra ・ Cryptoniesslia ・ Cryptoniscidae ・ Cryptonomicon ・ CryptoNote ・ CrypTool ・ Cryptoparachtes ・ Cryptoparachtes adzharicus ・ Cryptoparachtes charitonowi ・ Cryptoparachtes fedotovi ・ CryptoParty ・ Cryptopecten ・ Cryptopecten phrygium ・ Cryptoperiod ・ Cryptopezia ・ Cryptophagidae ・ Cryptophagus ・ Cryptophane ・ Cryptophane (software) ・ Cryptophasa hyalinopa ・ Cryptophasa pultenae ・ Cryptophasa rubescens ・ Cryptophasia ・ Cryptophis nigrescens ・ Cryptophlebia ・ Cryptophlebia amblyopa ・ Cryptophlebia heterospina ・ Cryptophlebia illepida 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 Cryptoperiod ： ウィキペディア英語版 Cryptoperiod A cryptoperiod is the time span during which a specific cryptographic key is authorized for use. Common government guidelines〔http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57Pt3r1.pdf〕 range from 1 to 3 years for asymmetric cryptography,〔http://www.keylength.com/en/4/〕 and 1 day to 7 days for symmetric cipher traffic keys.〔http://www.cse-cst.gc.ca/its-sti/services/crypto-services-crypto/ca-ac-eng.html〕 Factors to consider include the strength of the underlying encryption algorithm, key length, the likelihood of compromise through a security breach and the availability of mechanims of revoking keys. In traditional cryptographic practice, keys were changed at regular intervals, typically at the same time each day. The code word for a key change, in NSA parlance, is HJ or Hotel Juliet in the NATO phonetic alphabet.〔http://jproc.ca/crypto/terms.html〕 ==References== *''Conduct Unbecoming,'' Randy Shilts, Macmillan, 2005, p. 117, describes HJ key change procedure 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「Cryptoperiod」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.