encryption - .NET cryptography for licence keys?

Question

I want to create a license key, which cryptography algorithm would you recommend?

Basically the inputs would be:

company name
major version number
date created
expirey date
has feature1:
has feature2:
has feature3:

e.g. Acme Inc 5.0 20081102 20081102 0 1 0

Related: Which built-in .NET cryptography algorithm is the most secure?

Answer 1

I would recommend: Don't spend too much time on securing your keys. With byte compiled languages it is very easy to decompile and just make the application skip the validation step. No matter how secure your keys are, they don't matter when your validation function always return true. Serial keys are there to keep honest people honest.