How do I go about getting a storable value from the encrypted DATA_BLOB that can be stored/recovered from the registry and re-inserted in a new DATA_BLOB struct for decryption later on? Thanks...

I have a simple C++6.0/MFC SDI application that has some username/passwords associated with it. Up to now I have stored these items in the registry since there was no real security needs. However, there are now a few users who are requesting some increased security so I would like to encrypt/decrypt the username and passwords. I have searched for and found many encryption downloads but was wondering if there is any consensus on a preferred one. I just need to encrypt/decrypt a string as simply as possible, with moderate security. Thanks for your time and any assistance. StoneRaven