Format of data storage in the program?

Question

Programming

I decided to write a password store for myself (just out of interest). I have never dealt with the development of such applications, so the following question arose.
How to organize the storage of encrypted data? Random access to data is desirable.

Answer 1

XML or sqlite. The simple text format presented above will limit you to a one-line description or having to come up with your own escape sequences. And when you solve this problem, you end up with another under-XML (which is not needed).

Answer 2

Somehow I used the KeePass tool for a long time - all entries were stored in one * .key file. It was very easy to carry it with you everywhere.
You can come up with your own format: CATEGORY | DESCRIPTION | LOGIN | PASSWORD. Store everything in a file and encrypt it with AES/Blowfish etc. This is the easiest way.
It is possible to consider a variant with a DB. But since you write for yourself and just out of interest, I think this is redundant.

Answer 3

I once wrote for myself, also a program for storing passwords.
MD5 and everything else did not use. I decided to encrypt the data using the Vigenère Cipher.
You only need a key and a table to create. Well, no more problem.
Good luck writing the program!

Answer 4

see the organization of the same storage in kde - kwallet:
utils.kde.org/projects/kwalletmanager/