Encryption

[Zeya]

I need to encrypt information and decrypt saved information. What is
the best method to do this in C#?

I need to save information in humanly non-readable form and preferrably
encoded with date or some key and be able to retrieve the encoded
information programmatically to display to the user. If it is key based
then the encryption should be such that every time the key is changed
it should not affect previously encrypted data. Requirement is not to
archive the key.

Thanks.

 

[Guest]

This section of MSDN Online has just about everything you need to know:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secmod/html/secmod24.asp

Take some time to study it.
Peter