内容简介：golang中的fnv包实现了非加密hash函数Every cryptographic hash function is a hash function. But not every hash function is a cryptographic hash.A cryptographic hash function aims to guarantee a number of security properties. Most importantly that it's hard to find coll
golang中的fnv包实现了非加密hash函数
What is the difference between a Hash Function and a Cryptographic Hash Function?
Every cryptographic hash function is a hash function. But not every hash function is a cryptographic hash.
A cryptographic hash function aims to guarantee a number of security properties. Most importantly that it's hard to find collisions or pre-images and that the output appears random. (There are a few more properties, and "hard" has well defined bounds in this context, but that's not important here.)
Non cryptographic hash functions just try to avoid collisions for non malicious input. Some aim to detect accidental changes in data (CRCs), others try to put objects into different buckets in a hash table with as few collisions as possible.
In exchange for weaker guarantees they are typically (much) faster.
I'd still call MD5 a cryptographic hash function, since it aimed to provide security. But it's broken, and thus no longer usable as a cryptographic hash. On the other hand when you have a non cryptographic hash function, you can't really call it "broken", since it never tried to be secure in the first place.
非加密hash只是避免非恶意输入的碰撞。
以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，也希望大家多多支持 码农网
本站部分资源来源于网络，本站转载出于传递更多信息之目的，版权归原作者或者来源机构所有，如转载稿涉及版权问题，请联系我们。
深入理解计算机系统（原书第2版）
（美）Randal E.Bryant、David O'Hallaron / 龚奕利、雷迎春 / 机械工业出版社 / 2011-1-1 / 99.00元
本书从程序员的视角详细阐述计算机系统的本质概念，并展示这些概念如何实实在在地影响应用程序的正确性、性能和实用性。全书共12章，主要内容包括信息的表示和处理、程序的机器级表示、处理器体系结构、优化程序性能、存储器层次结构、链接、异常控制流、虚拟存储器、系统级I/O、网络编程、并发编程等。书中提供大量的例子和练习，并给出部分答案，有助于读者加深对正文所述概念和知识的理解。 本书的最大优点是为程序......一起来看看 《深入理解计算机系统（原书第2版）》 这本书的介绍吧!
