I have a client who wants me to use the usernames/passwords in an existing database as the authentication for a new web application (so that he doesn't have to make users enter the info into 2 places). The problem is that the passwords in the existing database are encrypted, and since I don't know how they were encrypted, I can't figure out how to write a compare method.

Looks like some kind of byte codes; when we enter new passwords, here are some examples of how they are saved:
a == 0xFB
b == 0xFC
aaa = 0xFBFFF9
q == 0x0C

Can anyone start me in the right direction to try to figure out how it's being done?

Thank you for any ideas,
steve


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