Encryption algorithm that returns only lowercase encrypted string

[Jon Skeet [C# MVP]]

Re: Encryption algorithm that returns only lowercase encrypted string

Ken P <kenp@blueskyfa ctory.comwrote:

I actually have this requirnment as well. We are encrypting our URL
using TripDES and its case sensitive alphanumberic string. Now seems
there are email scanning tools that rewrite URLs to all lower case.

Really? That's appalling, given that although email addresses shouldn't
be treated case-sensitively, URLs *definitely* can.

I have verified an email that is being sent to an AOL user is the proper
case - when it comes back to us the URL is all lower case. According to
the return headers the email is getting realyed through some
spamscanner.tes t.aol.com.

Ah... why am I not terribly surprised? ;)

I think this method will work..
http://www.eggheadcafe.com/articles/20060427.asp - being this is NOT
encryption rather obfuscation - which is fine for us.. but this
combination of HEX encoding should work fine - I need to test.. but I
should be able to do an upper on the string if it is converted to
lowercase and be off and running.

Surely TripleDES has given you a byte array, in which case just "hex-
encoding" that would be simpler, wouldn't it?

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Jon Skeet - <skeet@pobox.co m>
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