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Hello,

I am planning to create a login system for the members area of a site 
which uses some sort of encryption to generate a UUID from a 
username/password combination.  Before I do, I'd like to get some 
opinions to guide my decisions:

1.    Can anybody recommend an encryption algorithm or hash function to 
generate the UUID's?  I'm looking for something pretty secure but 
preferably fairly simple to implement and fast to compute.

2.    Are there any significant security/performance considerations I 
should take in to account when deciding whether to implement the 
encryption using ASP/Javascript or COM/C++?

3.    Am I even directing my questions at the right list?  (If not, can 
you recommend a more appropriate one?)

Thanks in advance,
Alan.