there is no build-in library in asp.
you can download libraries/codes from the net. search "vb asp encryption md5 sha library" in google.
e.g. http://www.frez.co.uk/freecode.htm#sha256
http://www.aspin.com/home/components/security?pg=4&order=desc
e.g. http://www.frez.co.uk/freecode.htm#sha256
http://www.aspin.com/home/components/security?pg=4&order=desc
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