That is , they take a plaintext string , and transform it into a small piece of ciphertext that cannot be used to reconstruct the original plaintext 也就是说，它们接收一个明码字串，将它转换成一小段无法用来重建原始明码的密文。
The encryption using crypto algorithms is ensured by the fact that it is computationally infeasible to generate plaintext that matches the hash value 使用加密算法的保密性由这样一个事实保证，即生成与哈希值匹配的明文在计算上是不可行的。
The next value previous value functionality of the b - tree would be lost , as the index ordering would be based on the ciphertext value , not the plaintext value B -树中求下一个值/前一个值的功能也将丢失，因为索引排序要基于密文值，而不是明文值。
The process of converting readily understandable information plaintext into a form difficult to understand by unauthorized individuals and systems ciphertext 把易理解的信息（明文）转化为一种对未授权的个人和系统来说难理解的形式（密文）的过程。
The analyses and the computer simulation results show that the proposed algorithm can effectively resist known - plaintext attack and be easily realized with hardware 分析及计算机仿真结果表明，该加密方法具有良好的加密效果，运算量小，易于硬件实现。
In cryptography , the additional characters added to a plaintext message , to ensure that its length is an integral number of blocks for encryption by a block cipher 在密码学中，为了使明文信息的长度为分组密码加密中所用的块的整数倍，而在明文中添加的附加字符。
The method in question is a ciphertext - only attack . this means that we don ' t need bits of guessed / known plaintext for a successful decryption 解决问题的方法是对纯密码信息进行攻击。这意味着我们不需要猜解或在已知明码文本的某些比特位信息的情况下来对密文进行完美解密。
In cbc mode , blocks of text are encrypted sequentially , with the result of the previous block encryption being used to alter the current plaintext block before it is encrypted 在cbc模式中，文本块是连续加密的，在加密当前明文块之前，用前一次块加密的结果修改当前明文块。
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，对相同明文块的加密总是产生相同的密文块，这为某些类型的密码分析攻击打开了方便之门。
That is the equivalent of the yellow sticky note problem , nearly as bad is storing them as plaintext in a file on the system named something like keyfile 这样做等同于前面提到的即时贴问题，同样糟糕的做法是将密钥存放在系统上一个文件中，而文件名又是类似于keyfile之类的东西。
