Password protected typed file??

[gienq]

Hey,
I'm developing an application (let's say phone book), that stores records in typed file.

I would like to encrypt the database file and/or make it password protected. How can I do that? I'm using Lazarus.

Another way: Does anybody know database system that keeps records in one file without additional software (client/server applications).
Thank you!

[Donovan]

Firebird or SQLite would be good for this type of project

[emailx45]

Certaly, not is good idea encrypted the file of the database (DB), but, your data just.

Delphi XE? have some functions for encrypt Strings, for example, or, you can to use components for this function.

So, you encrypt the data before post, and decrypt before show it.

Firebird is very good for use, and your password use 8 characters for access (users), but, not have encrypt internal for datas. But, in Server PC running Server Firebird, anyone admin Firebird user can open and changed and drop any database or data.

FIBPLUS components, have FILTERS for fields BLOB (for encrypt and decrypt data automatic and very fast) - look www.devrace.com

Note: when in network with very users, your app can stay very slow.... when using external functions for encrypt or decrypt data.