From Forum Nokia Wiki

In this article it had explaine about the Encrypt and Decrypt of contact database actually it is very important to keep the contact data securly because we have many important contact details are stored in contact database so we have to encrypt it for that these article had explianed about the program how to encrypt its contact database.Contact Database is being encrypted here which results in non-readable form of contact items in the Phonebook of user's phone.On the other side Contact Database is decrypted to get the readable content back. --Narendrachinni 05:48, 9 September 2009 (UTC)