block cipher的用法和樣例：
例句
- A differential cryptanalysis of the iterated block cipher based on the new round function is presented.
對基于此種新輪函數的一種迭代型分組密碼進行了差分密碼分析。 - 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.
在密碼學中，為了使明文信息的長度為分組密碼加密中所用的塊的整數倍，而在明文中添加的附加字符。
