text cipher 中文意思是什麼
text cipher
解釋
報文加密機-
Cipher block chaining ; a process whereby a plain text block is xored with the previous cipher text block before being encrypted
密碼分組鏈接（ cipher block chaining ） ；在加密明文塊前將它與以前的密文塊進行xor運算的過程。 -
The process of transforming plain text into cipher text
將明文轉換成密文的過程。 -
The process of transforming cipher text into plain text
將密文轉換成明文的過程。 -
The general name used for a string of bits which, when used with a cipher, determines the relationship between given plain text and associated cipher text
用於位字元串的統稱，當與密碼一起使用時，它確定給定明文與關聯的密文間的關系。 -
The first key technique : using plain - text cipher and md5 message - digest algorithm to ensure stb and dhcp server ' s certificate and secure the stb and server ' s communications - the second key technique : using hmac algorithm to realize the safe functions - the third key technique : using ipsec to realize safe functions o those three methods " complexity increases in turn and the degree of the security increases as well which depend on the frame of the methods and the complexity of the algorithm. all theose three methods use the unique serial - number or a special slip - window to defend replay attack
主要採用三種安全方案實現：第一種：利用約定的明文密碼驗證機頂盒與dhcp服務器的合法身份， md5驗證信息合法性：第二種：利用hmac演算法驗證機頂盒與服務器身份，信息合法性；第三種：利用ipsec驗證機頂盒與dhcp服務器身份與信息合法性。每一種方案中皆採用包序號唯一法或者滑動窗口法保證重放攻擊。此三種方案復雜度依次增加，安全度依次升高，主要取決于演算法的復雜度與架構的搭建。 -
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。 -
If the plain text to be encrypted contains substantial repetition, it is feasible for the cipher text to be broken one block at a time
如果要加密的純文本包含大量重復的塊，則逐塊破解密碼文本是可行的。 -
Des is a block cipher. that means it operates on plain text blocks of a given size nominally 64 bits and returns cipher text blocks of the same size. so, des results in a permutation among the 264 possible arrangements of 64 bits, each of which may be either 0 or 1
據報道，通過合併一個稱為nettop的商業產品， nsa將使用運行se linux的一臺計算機來替代一些在物理上分隔的計算機（這意味著操作安全性的「空隙」方法- -將物理上分隔的系統區分成不同的安全性級別） （請參閱 -
If a single bit of the cipher text block is mangled, the corresponding plain text block will also be mangled
如果密碼文本塊中有一個位出錯，相應的純文本塊也將出錯。 -
If a single bit of the cipher text block is mangled, the entire corresponding plain text block will also be mangled
如果密碼文本塊中有一個位出錯，相應的整個純文本塊也將出錯。 -
The cipher text string is then passed to the
接著該密碼文本字元串傳遞給 -
The cipher text and the iv are then transmitted via radio
然後，密文和iv通過無線電發送。 -
Which returns a base 64 encoded cipher text string
，返回用base 64編碼的密碼文本字元串。 -
Tag, which holds the base 64 encoded cipher text string
標記，該標記含有用base 64編碼的密碼文本字元串。 -
The cipher text to be decrypted
要解密的密碼文本。 -
You do not have to open the key immediately before decrypting the cipher text
不必只在解密密碼之前才打開密鑰。 -
Finally, the result is xored with the cipher text to reveal the message
最後，將結果與密文進行xor運算，以顯示消息。 -
The scheme is more efficient than the basic cramer - shoup ' s encryption scheme while its security against adaptive chosen cipher - text attack can be proved under the hardness assumption of decisional difhe - hellman problem. 2. study existing digital signature and develop an efficient digital signature based on certificate data
在分析基本數字簽名方法的基礎上，設計並實現了基於離散對數困難問題（ dlp ） ，輔以hash函數和公鑰證書進行簽名和驗證簽名的數字簽名方法。 -
A type of symmetric cipher that breaks down the plain text into blocks, encrypting these in turn
分組密碼（ block cipher ）將明文分成塊然後依次加密它們的一種對稱密碼。 -
The algorithm has a large space of the key, which can be proven by detailed analysis of the performance index, and can withstand chosen - text / cipher attack
文中對演算法進行了詳細的性能指標分析，結果表明:該演算法密鑰空間巨大，可以有力地抵抗選擇明文、密文攻擊。
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