md5 one -way hash ?

[sarahr202]

Hi every body.

My book mentions md5 one-way hash? what is it? are there md5 two-way hash,three-way hash too?

thanks and have a good weekend

[Lucien Avramov · Accepted solution]

Hi Sarah,

MD5 by design is a one way hash.

Developed in 1994, MD5 is a one-way hash algorithm that takes any length of data and produces a 128 bit "fingerprint" or "message digest". This fingerprint is "non-reversible", it is computationally infeasible to determine the file based on the fingerprint. This means someone cannot figure out your data based on its MD5 fingerprint.

Here is some websites for reading:

http://www.spitzner.net/md5.html

http://software.intel.com/sites/products/documentation/studio/composer/en-us/2009/ipp/ippcp/ippcp_ch3/ch3_Intro.html

[Jon Marshall · Accepted solution]

Sarah

MD5 is only a one-way hash. See this article for more details -

http://aspnet.4guysfromrolla.com/articles/103002-1.aspx

Jon