So because you were lazy and didn't start until 3 weeks before the paper is due, and can't be bothered to do more than a cursory search of the web, you want us to write your paper for you...

Do...

and most of all: security

Unless you work for a bank or creditcard company and in the department responsible for such software the best thing to do is to simply forget about it.

what about thinking for yourself? Coming up with your own ideas?
Or are you going to sit here waiting for someone to write a complete proposal and when it's OK'd by your teachers come back here and...

whatever happened to WordStar? Do they still exist?
WordStar was the preferred choice of the scientific community in the 1980s and early 1990s, afterwards superceded by WordPerfect 5 which had a...