利用密码哈希函数的良好性质和DLP的困难性问题，构造了一个可验证可关联的环签名方案。

Making use of the good properties of cryptography Hash functions and the difficulties of DLP, a verifiable and linkable ring signature scheme is constructed.

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网站的目的是证明用简单哈希函数来保护有价值的密码是不安全的，并促使开发人员使用更为安全的方法。

The goal of FreeRainbowTables. com is to prove the insecurity of using simple hash routines to protect valuable passwords, and force developers to use more secure methods.

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介绍基于对称密码系统的可证明安全理论，利用平方哈希函数实现技术，对一种可证明安全算法DFC实施改进后，安全性没有损失，但是速度得到了提高。

In this paper, based on provable security theory, a provable security cipher DFC is improved on speed without lost of security by means of fast implementation of square hash function.

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The answer is I can't. OK, in the simple case of integers I can, but in the case of something more complex like faces or fingerprints or passwords for that matter, it's hard to design a hash function that has completely even distribution, meaning that it takes any input into exactly one output spot.

答案是我不能，好吧,在简单的整数的例子中,我可以做到，但是在一些更复杂的场景中,比如面部，指纹，密码相关的问题中，很难设计一个哈希函数具备完全平均的分配,也就是说，做到对任一输入，可以准确地得到相应的唯一输出,因此在一个哈希问题中。

麻省理工公开课 - 计算机科学及编程导论课程节选