block cipher 中文意思是什麼

block cipher 解釋
分組密碼
  • block : n 1 片，塊，大塊；粗料，毛料；木料；石料；金屬塊；【建築】塊料，砌塊；【地質學；地理學】地塊。2 ...
  • cipher : n 1 零〈即0〉。2 數碼，阿拉伯數字。3 暗號，暗碼，密碼；密碼索引 （＝cipher key）。4 （姓名首字母...
  1. The block cipher classes provided in the base class library use a chaining mode called cipher block chaining, which uses a key and an initialization vector to perform cryptographic transformations on data

    基類庫中提供的塊密碼類使用稱作密碼塊鏈（ cbc ）的鏈模式，它使用一個密鑰和一個初始化向量（ iv ）對數據執行加密轉換。
  2. You can choose different encipher algorithms according to requirement. aes is a symmetric block cipher that can process data blocks of 128 bits, using cipher keys with lengths of 128, 192and 256 bits. because the length of block and key has been expanded, security has been enhanced

    Aes （ advancedencryptionstandard ）是fip （ federalinformationprocessingstandardspublication ）在2001年6月發布的草案，它是分組加密演算法，消息分組為128bit ，有三種密鑰長度128bit 、 192bit 、 256bit ，由於分組長度和密鑰長度加長使得安全性大大的提高，它有望成為21世紀的加密標準。
  3. The first kind of algorithm is based on s - box controlled by key, the algorithm distinguishes most of other block ciphers, its visible quality is that its s - box is not regular and fixative, but controlled by block cipher ' s key. the second kind of algorithm is based on smn ( d ) array code, it makes full use of the visible quality of smn ( d ) array code possessing big code distance ( d ). the thesis discusses the two algorithms " reversibility, security and their qualities, the

    第一種是基於「 s -盒由密鑰控制」的變結構分組密碼，該演算法區別于其它大部分分組密碼最大的特點是它的s -盒不是固定不變的而是由密鑰控制產生；第二種是基於smn （ d ）陣列編碼的變結構分組密碼，該演算法充分利用了smn （ d ）陣列編碼具有碼距大的特點；文中對這兩個演算法的可逆性、安全性及其性能等進行了探討和分析，分析結果認為這兩個變結構演算法正確、有效且安全。
  4. Camellia is one of standard block cipher algorithms in the nessie project

    Camellia密碼是歐洲nessie計劃2003年公布的分組密碼標準演算法之一。
  5. The born of aes and the launching of nessie project, bring a new climax of block cipher research all over the world

    Aes的誕生和歐洲nessie密碼計劃的啟動，使得國際上又掀起了一次研究分組密碼的新高潮。
  6. Blowfish is the fastest block cipher supported by openssl

    Blowfish是openssl支持的最快的塊加密演算法。
  7. Blowfish is a block cipher created by bruce schneier, a computer security consultant and author of the standard reference

    Blowfish是由bruce schneier創造的一種塊加密演算法， bruce schneier是一名計算機安全顧問，同時也是標準參考
  8. Cipher feedback mode, a block cipher mode whereby it s implemented as a self - synchronizing stream cipher

    密碼反饋方式（ cipher feedback mode ） ，作為自同步序列密碼實現的一種分組密碼方式。
  9. As regards cryptographic algorithm, according to database encryption requirement for cryptosystem, we adopt block cipher, which is high intensity and fast, based on analysing and comparing several popular cryptographic algorithm ; and resolve cipher message expansion problem through making improvement of block cipher with " cipher message whmovement "

    在數據的加密演算法上，本文在分析比較目前常用的加密演算法的基礎上，依據數據庫加密對密碼系統的要求，採用了保密強度大且速度快的分組密碼；並用「密文挪用法」對分組密碼進行改進，解決了加密后數據擴張的問題。
  10. Related - mode attacks on block cipher modes of operation

    分組密碼的相關模式攻擊
  11. Specifies the block cipher mode to use for encryption

    指定用於加密的塊密碼模式。
  12. The block cipher mode encodes data one block at a time

    塊密碼模式一次一塊對數據進行編碼。
  13. Concentrating on security analysis and design of block ciphers, five principal achievements have been obtained in this dissertation : 1. using differential - nonlinear cryptanalysis, truncated differential - linear cryptanalysis and integral cryptanalysis respectively, three attacks of reduced - round safer + + are given ; 2. based on the survey of provable security and practical security of block ciphers, a block cipher model of spn cipher containing feistel structure is proposed

    分別利用差分-非線性密碼分析、截斷差分-線性密碼分析、積分密碼分析三種不同的密碼分析方法，對safer + +進行了密碼分析； 2在對分組密碼的可證明安全性和實際安全性研究的基礎上，提出了一個嵌套feistd結構的sp型分組密碼的模型。
  14. Macs. 1 : information technology - security techniques - message authentication codes - part 1 : mechanisms using a block cipher

    信息技術.安全技術.文電鑒別碼
  15. 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基於細胞自動機的分組密碼系統cac的變形進行了分析，結果表明： cac的這種變形在選擇明文攻擊下是極不安全的。
  16. In the design and analysis of block cipher, considering the noncontinuity of encryption and decryption of advanced encryption standard - rijndael algorithm and the arbitrariness of the choice of polynomialm ( x ), we change the modular polynomial and the polynomials used in process of encryption and decryption, which the encryption polynomial and the decryption polynomial are the same polynomials in our choices. the new algorithm have more continuity

    在分組密碼的設計與分析方面：針對美國即將推出的高級加密標準rijndael演算法的加解密的不一致性和rijndael演算法中模多項式的選取隨意性，我們修改了rijndael演算法中的模多項式和加解密所用的多項式，使得加解密取相同的多項式，這樣加密與解密具有更多相容性。
  17. However, block cipher algorithms tend to execute more slowly than stream ciphers

    但是，塊密碼演算法執行起來通常比流密碼慢。
  18. Although it tends to execute more slowly than stream cipher, block cipher is more secure

    盡管塊密碼的執行速度慢于流密碼，但塊密碼更安全。
  19. Meanwhile, the implementation of such block cipher as rijndael with shifting registers is designed with performance as good as that of he method of table - lookup

    將移位寄存器實現高效流密碼的思想用於分組密碼rijndael演算法的實現，獲得與查表法相當的效率。
  20. A simple block cipher that does not use an initialization vector will encrypt the same input block of plain text into the same output block of cipher text

    ，一個不使用初始化向量的簡單塊密碼將把相同的明文輸入塊加密為同樣的密文輸出塊。
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