Alright .NET gurus, solve this one Options

[Hartmann]

I have been scraping data off of a site (300KB) and they recently changed their URI string so that the date parameter has a hash of a date instead of the date itself.

The piece of the string I am looking at looks like this:

CODE

FDate=ZVbeOGQGDBnVmWDrJ6901w==&RDiret=Status

And more exactly the FDate parameter. Any ideas on the hashing mechanism? I know it can't be one way encryption because there would be no way to interpret that as a date (and they have to interpret it as a date).

[impala454]

I wouldn't rule out one-way MD5 or SHA1 or something. Their page could have a pre-defined set of dates which are hashed into a table that just sits in memory. Without knowing exactly what the page is or what it's doing it's difficult to tell. It doesn't really make sense to me though unless this thing is being called from some app or web service or something.

You can search the .net cryptography namespace on MSDN and see what turns up (System.Cryptography).

You might also try just picking a recent date (or one that makes sense in terms of the page), and use several different hashing algorithms and call the page/service with them and see what happens.