Encrypting a query string in URL

[Andy G]

If users forget there passwords I want to send a link to them through email
so they can click on a link and go to a change password page. eBay does
this by sending you a url that looks something like,
http://sigin.ebay.com/aw-cgi/pass/$1$69912$1XasURRhQFdYhulVSnJqt. I want to
a send a url with ?userID=228 tacked on the end. Instead of the 228 being
in clear text I want to encrypt it somehow and then user
Request.QueryString("userID") to get the encrypted value to decrypt it.

Could someone throw me a bone.
\\
Andy

[Kurt Schroeder]

I hope this helps
see the Imports System.Security.Cryptography name space.
thanks
kes

"Andy G" wrote:

If users forget there passwords I want to send a link to them through email
so they can click on a link and go to a change password page. eBay does
this by sending you a url that looks something like,
http://sigin.ebay.com/aw-cgi/pass/$1$69912$1XasURRhQFdYhulVSnJqt. I want to
a send a url with ?userID=228 tacked on the end. Instead of the 228 being
in clear text I want to encrypt it somehow and then user
Request.QueryString("userID") to get the encrypted value to decrypt it.

Could someone throw me a bone.
\\
Andy

[Andy G]

It does help. I use that for my password hashing so I am somewhat familiar
with that name space. Which classes would I use within that namespace for
the encrypting and decrypting?

Thanks.

"Kurt Schroeder" <Ku***********@discussions.microsoft.com> wrote in message
news:4B**********************************@microsof t.com...

I hope this helps
see the Imports System.Security.Cryptography name space.
thanks
kes

"Andy G" wrote:

If users forget there passwords I want to send a link to them through
email
so they can click on a link and go to a change password page. eBay does
this by sending you a url that looks something like,
http://sigin.ebay.com/aw-cgi/pass/$1$69912$1XasURRhQFdYhulVSnJqt. I want
to
a send a url with ?userID=228 tacked on the end. Instead of the 228
being
in clear text I want to encrypt it somehow and then user
Request.QueryString("userID") to get the encrypted value to decrypt it.

Could someone throw me a bone.
\\
Andy

[Kurt Schroeder]

I looked this up in chapter 21 of ASP.NET UnLeashed. It contains a few
examples of the different methods and their relitive strengths. Symmetric
encription is what i looked at.
thanks
kes (and yes i'm new to this one too!)

"Andy G" wrote:

It does help. I use that for my password hashing so I am somewhat familiar
with that name space. Which classes would I use within that namespace for
the encrypting and decrypting?

Thanks.

"Kurt Schroeder" <Ku***********@discussions.microsoft.com> wrote in message
news:4B**********************************@microsof t.com...

I hope this helps
see the Imports System.Security.Cryptography name space.
thanks
kes

"Andy G" wrote:

If users forget there passwords I want to send a link to them through
email
so they can click on a link and go to a change password page. eBay does
this by sending you a url that looks something like,
http://sigin.ebay.com/aw-cgi/pass/$1$69912$1XasURRhQFdYhulVSnJqt. I want
to
a send a url with ?userID=228 tacked on the end. Instead of the 228
being
in clear text I want to encrypt it somehow and then user
Request.QueryString("userID") to get the encrypted value to decrypt it.

Could someone throw me a bone.
\\
Andy

[Mark]

Hi, take a look at this control

http://dotnetjunkies.com/WebLog/tsha.../17/32481.aspx

Cheers
Mark
"Kurt Schroeder" <Ku***********@discussions.microsoft.com> wrote in message
news:AC**********************************@microsof t.com...

I looked this up in chapter 21 of ASP.NET UnLeashed. It contains a few
examples of the different methods and their relitive strengths. Symmetric
encription is what i looked at.
thanks
kes (and yes i'm new to this one too!)

"Andy G" wrote:

It does help. I use that for my password hashing so I am somewhat familiar with that name space. Which classes would I use within that namespace for the encrypting and decrypting?

Thanks.

"Kurt Schroeder" <Ku***********@discussions.microsoft.com> wrote in message news:4B**********************************@microsof t.com...

I hope this helps
see the Imports System.Security.Cryptography name space.
thanks
kes

"Andy G" wrote:

> If users forget there passwords I want to send a link to them through
> email
> so they can click on a link and go to a change password page. eBay does> this by sending you a url that looks something like,
> http://sigin.ebay.com/aw-cgi/pass/$1$69912$1XasURRhQFdYhulVSnJqt. I want> to
> a send a url with ?userID=228 tacked on the end. Instead of the 228
> being
> in clear text I want to encrypt it somehow and then user
> Request.QueryString("userID") to get the encrypted value to decrypt it.>
> Could someone throw me a bone.
> \\
> Andy
>
>
>