Is an optional parameter used to protect against certain kinds of cryptanalytic attacks 是一個(gè)可選參數(shù),用于防止某些類型的密碼分析攻擊。
For example, in ecb mode, encrypting identical blocks of plaintext always produces identical blocks of ciphertext, facilitating certain kinds of cryptanalytic attacks 例如,在ecb模式中,對相同明文塊的加密總是產(chǎn)生相同的密文塊,這為某些類型的密碼分析攻擊打開了方便之門。
Some initial cryptanalysis and detailed statistical tests of scf are given, the results show that scf can resist some known cryptanalytic attacks and has excellent statistical properties 并且對scf作了一些初步的密碼分析和詳細(xì)的統(tǒng)計(jì)測試,結(jié)果表明:scf密碼足夠抵抗一些已知的密碼分析、具有很好的統(tǒng)計(jì)性能。
Used properly-with a key of sufficient length and an encryption mode that doesn t leak information about the plaintext-most modern algorithms are reasonably safe against cryptanalytic attacks 如果使用得當(dāng)使用足夠長的密鑰和不會泄漏關(guān)于明文的信息的加密方式大多數(shù)現(xiàn)代算法在密碼分析攻擊面向都有一定的安全性。
Security analyses of a variant of a new block cipher system ( called cac ) based on cellular automata theory are given using two cryptanalytic approaches . the results show that this variant of cac is very insecure under chosen-plaintext attacks 利用兩種方法對一個(gè)基于細(xì)胞自動(dòng)機(jī)的分組密碼系統(tǒng)cac的變形進(jìn)行了分析,結(jié)果表明:cac的這種變形在選擇明文攻擊下是極不安全的。