Comments on: What is SHA-1 and MD-5 encryption? http://itknowledgeexchange.techtarget.com/itanswers/encryption/ Sun, 19 May 2013 03:14:28 +0000 hourly 1 By: labnuke99 http://itknowledgeexchange.techtarget.com/itanswers/encryption/#comment-51583 labnuke99 Thu, 14 Feb 2008 20:17:06 +0000 #comment-51583 Both are message authentication hash algorithms. This means that they are one-way and you cannot derive the original message from the hash produced by the algorithm.

SHA1 – The US Secure Hash Algorithm takes a message of less than 264 bits in length and produces a 160-bit message digest designed so that it is computationally very expensive to find a text string that matches a given hash.

MD5 – Message Digest 5 is a standard algorithm that takes as input a message of arbitrary length and produces as output a 128-bit fingerprint or message digest of the input. Any modifications made to the message in transit can then be detected by recalculating the digest. Similar in concept to a CRC, the MD5 algorithm is used as part of the SNMPv3 security subsystem

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