置換密碼 的英文怎麼說

中文拼音 [zhìhuànmìmǎ]
置換密碼 英文
permutation cipher
  • 置 : 動詞1. （擱; 放） place; put; lay 2. （設立; 布置） set up; establish; arrange; fix up 3. （購置） buy; purchase
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 密 : Ⅰ名詞1 （秘密） secret 2 [紡織] （密度） density 3 （姓氏） a surname Ⅱ形容詞1 （距離近; 空隙小）...
  • 碼 : Ⅰ名詞（表示數目的符號或用具） a sign or object indicating number; code Ⅱ量詞1 （指一件事或一類的...
  • 置換 : displace; substitute; supersede; substitution; replacement; permutation; transposition; transposi...
  1. Setup functions enable user - defined adaptation of a wide variety of options such as display contrast, record printout, saving data on the computer, general code, temperature calibration, acoustic signal, date and time, id, data transfer, update fix programs, language, c f changeover, check program, battery change, diagnosis data, printing programs, seal test, service functions for maintenance

    設置功能允許使用人員對多種選項進行定義和調節，例如顯示屏幕對比度列印記錄把數據記錄到計算機上總碼溫度校正音響信號日期和時間識別傳輸數據固定程序升級語言攝氏和華氏溫度轉換檢查程序更換電池診斷數據列印程序測試密封保養用服務功能。
  2. Setup functions enable user - defined adaptation of a wide variety of options such as display contrast, record printout, saving data on the computer, general code, temperature calibration, acoustic signal, date and time, id, data transfer, update fix programs, language, screen saver, c f changeover, check programme, battery change, diagnosis data, printing programs, seal test, service functions for maintenance

    設置功能允許使用人員對多種選項進行定義和調節，例如顯示屏幕對比度列印記錄把數據記錄到計算機上總碼溫度校正音響信號日期和時間識別傳輸數據固定程序升級語言屏幕保護攝氏和華氏溫度轉換檢查程序更換電池診斷數據列印程序測試密封保養用服務功能
  3. In cryptography, a cipher produced by a composition of a number of substitution and transposition ciphers

    密碼學中，由替代密碼和置換密碼結合使用而構成的一種密碼。
  4. In cryptography, an early example of monoalphabetic, or substitution cipher used in the gallic wars

    密碼學中，在高盧戰爭中使用的一種單表置換密碼，或稱替代密碼的早期例子。
  5. In this paper, chroma dc coefficients are selected as the carrier data because chroma dc coefficients are robust. also, alterable steps are used to select one part of the coefficients, so the watermark is imperceptible ; before watermark embedding, the watermark is divided into many parts, every part is individually embedded into one gop of the video, even if a gop is destroyed, the watermark can be extracted correctly, this methods promotes the robustness of the watermark ; in addition, in order to promote the security of the watermark, the user ' s id and password are used to generate chaos sequence by the chaos system which is created in this paper, later, watermark is mixed by the chaos sequence. also, the embedding position of the watermark bit is modified by one chaos sequence, so, unauthorized person can not extract or remove the watermark, since the embedding position is unknown

    本文認為，色度dc系數是魯棒性非常好的參數，因而選擇色度dc系數作為水印信息載體，同時，採用可變的步長選擇部分系數，保證了水印的隱形性；在嵌入水印時，本文採用水印信息「網格劃分」 、各子塊獨立嵌入視頻的方案，由於水印信息子塊是相對獨立的嵌入視頻中的每一相對獨立的圖組當中，即使某一圖組收到一定破壞，也能夠恢復水印信息，使水印的健壯性得到提高；此外，為了提高水印信息的安全性，在嵌入水印信息時，根據用戶輸入的id號和密碼，利用本文構造的混沌系統產生的混沌序列對水印信息進行變換，同時，對每一水印信息比特的嵌入位置也採用了偽隨機序列進行調整，這樣，未授權用戶不能提取水印信息，也難以擦除其中的水印信息，因為嵌入的位置是未知的。
  6. This expression vector plbcas - hsa - lgl has the following advantages : i ) the 1. 7kb promoter is able to drive cell - specific and hormone - dependent expression ; ii ) the inclusion of intron - 1 can increase expression level of fusion genes ; iii ) the 5 ' utr of bovine p - casein mrna may have a positive role in both transcriptional and post - transcriptional regulation ; iv ) the gfp gene make the selection of positive clone among embryos possible ; v ) the gfp gene can be easily excised via cre - mediated recombination between the two loxp sites after the expression vector has been integrated into chromosome ; vi ) the two incompatible lox sites, loxp and lox2272, would facilitate cre - recombinase mediated cassette exchange ( rmce ), which in theory will leading to develop a technology of site - specific gene expression in animal mammary glands

    該載體的特點是：具有可以調控外源基因在乳腺中特異表達的牛-酪蛋白基因5 `端側翼區和包括第一外顯子及內含子在內的5 `端調控區；將人血清白蛋白cdna準確地置於牛-酪蛋白基因第二外顯子中的翻譯起始密碼子atg之後，而且沒有增加額外的序列和使人血清白蛋白cdna移碼；引入標記基因gfp ，便於在胚胎期鑒定陽性胚胎，減少受體；引入cre lox重組系統： （ ? ）標記基因gfp的兩端的兩個loxp位點可以在表達載體整合到基因組后，刪除標記基因； （ ? ）餘下的一個loxp位點可以和前面的lox2272位點組成cre重組酶介導的盒式交換系統。
  7. A rare code of arg was in one of the first pair of primer and all of bases of the second pair of primer were changed to biased codes of e. coli

    第一對中的一個引物，含有一個精氨酸稀有密碼子，第二對引物則根據密碼子的兼并性，所有堿基都置換成大腸桿菌偏愛的密碼子。
  8. On the other hand, the cipher systems can be seen as a permutation systems under the controlling of key

    另一方面，由於密碼系統數學上可以看成是一個在密鑰控制下的置換映射。
  9. The results obtained in this thesis offers some new ideas and methods for studying of permutation theory in block cipher system

    上述工作為分組密碼中置換理論的研究提供了新的方法、新的思路，並得到了一批好的置換源。
  10. A cryptographic system in which units of plain text of regular length, usually letters, are arbitrarily transposed or substituted according to a predetermined code

    密碼一種密碼系統，其中固定長度的明文里的單元，通常為字母，被任意倒置或按事先確定的符號系統替換
  11. 1 luby m, rackoff c. how to construct pseudorandom permutations from pseudorandom functions. siam journal on computing, 1988, 17 : 373 - 386. a preliminary version including other results appeared in proceedings of the 18th acm symposium on theory of computing, 1986, pp. 356 - 363

    可證明安全理論在分組密碼中的研究始於luby和rackoff對des的工作，他們形式化地描述了分組密碼的密碼特性，依據不同的攻擊，定義了偽隨機置換和超偽隨機置換的概念。
  12. The high at content of the native gene is very difficult to express, we designed a new he gene by reverse the codon used for e. coli and yeast, then, the he gene was cloned into the expression vector pqe - 60

    本研究嘗試了其保護性抗原基因在大腸桿菌及酵母中的表達。天然bont a的hc片段基因中at含量高達76 ，其通過同義密碼子置換人工合成hc段基因，將at含量降到57 。
  13. When the secure system is cracked by the hacker, the enterprises must change all the source decoder which has been placed in the stb, it will cost much more than the followed scheme, smart card scheme

    如果將解密模塊從解碼器中分離出來，置於安全性能極高的智能卡中，一旦系統安全受到威脅，僅通過更換相對廉價的智能卡，就會避免數字電視運營商遭受巨額經濟損失。
  14. An application of the theory of permutations in breaking the enigma cipher

    置換理論在破譯enigma密碼中的應用
  15. Block cipher is an important branch of mordant cryptography, and permutation theory has an important role in studying and designing of block cipher

    分組密碼是現代密碼學中的一個重要研究分支，而置換理論在分組密碼的研究與設計中有著重要的地位。
  16. First a review of developing history and designing principle of block cipher is given and the important function of permutation theory in block cipher is presented in this thesis

    本文首先綜述了分組密碼的發展歷程、設計原理，以及置換理論在這個體制設計中的重要作用。
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