Email verifacation

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Hello every body I had a question

I am involved in a project where I need to verify the user's email
address by sending them an email and asking them to click on a link. now
I have done this but my link is human readable(example
validator.aspx?address="blah@xxxxxxxx") so any user can just type in
their email address into that link and it will validate it for them...
now what I want to do is to encrypt this email but most of the
encryption methods that I have searched into end up giving me a very
long strings but most professional websites that I have seen have done
this but they use a very short encrypted string.. can somebody give me
some hints on how to go about this...what is the best most professional
method to use?

btw i am coding this in asp.net 2.0 C#
thank you in advance

Awaiting your responds


---
Best Regards
Amir

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