压缩函数 meaning in English
compressibility function
compression function
Examples
- The hardware capacity for speech in spce061a is used and the function of speech compression is embedded in software
该系统利用spce061a芯片具有的语音播放的硬件条件,并结合软件算法上的语音压缩函数库,实现了声信号的智能化输出。 - A hash - based message authentication code hmac uses a hash function where data is hashed by iterating a basic compression function on blocks of data
基于哈希的消息验证代码( hmac )使用一个哈希函数，通过在数据块上迭代基本压缩函数来计算数据的哈希值。 - First the companding function that can realize optimum table spacing is derived , and a new nonlinear indexing method based on lut technique is putting forward . the advantage of this new indexing method is studied and the practical implementation is present . at last an improved adaptive scheme of the new method is considered
首先理论推导了实现表项最优分布的压缩函数，然后提出了一种非线性表项索引技术?查找表索引技术，分析了该技术的特点并给出了具体实现方式，最后还提出了自适应改进方案。 - The small range searching technique can correct 4 more conditions for the first iteration differential and 3 more conditions for the second iteration differential , thus improving the probability and the complexity to find collisions . the whole attack on the md5 can be accomplished within 5 hours using a pc with pentium4 1 . 70ghz cpu
关于hash函数的碰撞攻击最近几年取得了举世注目的成果，王小云等提出的基于模减的差分分析方法有效地攻破了md4 , md5 , ripmd , haval和sha - 0等一系列hash函数，其攻击算法复杂度都低于次压缩函数运算，在一般的个人电脑上运算都可以找到碰撞实例。