Released Symbian Crypto Library

Does anyone know of any S60 3rd edition examples that demonstrate how to use
the 3rd edition published crypto libraries correctly?

I was using the old crypto libs in the S60-2nd edition SDK to encrypt
(a) a flat file
(b) an sql database
using CSecurityBase* securityBase / CSecurityDecryptBase* decryptBase.

I now wish to reimplement the encryption of a flat file (and database if still possible) in my 3rd Edition application port.

I hoped there would be some demo examples in the CryptoLib SDK setup but
no luck there. I'm no cipher expert so don't want to mess around with
hacking somethign to gether as I would never know if it is correct let
alone secure. Hopefully somebody with expertise can advise accordingly.

Thanks for any advice.