ECE2524 SP14 Final Project- WordCrypt
Introduction
Wordcrypt is a simple yet powerful string encryption tool for text files.
It can encrypt or decrypt entire text files.
It is also capable of encrypting or decrypting specific strings or lines in the text.
Required Library
In order to run wordcrypt, you need PyCrypto library installed.
Linux - Ubuntu based:
$ sudo apt-get install python-crypto
Linux - RedHat based:
$ sudo yum install python-crypto
Windows:
1. Go to http://www.voidspace.org.uk/python/modules.shtml#pycrypto
2. Download and install "PyCrypto 2.6 for Python 2.6 32bit" or "64bit"
Usage
Usage: python wordcrypt.py [Option1] [] [File ...]
Option:
1. -e : Encrypt (program defaults to -e if user does not input -e or -d), mutually exclusive with -e
2. -d : Decrypt, mutually exclusive with -e
3. -p : Provide password (If no -p switch, user will be prompted to type password)
4. -s : Encrypt only the specific strings ex) -s "str1" "str2" "str3"
5. -l : Encrypt the lines containing the specific string ex) -l "str1" "str2" "str3"
6. -i : Input file (if no -i switch, the program will read from the standard input)
7. -o : Outout file (if no -o switch, the program will write to the standard output)
Useful Commands:
To highlight the encrypted part, add the following at the end of command line after a space
| grep '\_\_\[.*\]\_\_'
To save the result in clipboard, add the following at the end of the command line after a space
| xsel -ib
(This requires xsel. To install, type sudo apt-get install xsel)
Note:
This project has been inspired by a scene in the movie "Inception"
There are many tools out there that encrypts the file itself.
But what if you want to encrypt only the key pieces of information?
Wordcrypt uses AES-128 encryption algorithm which is known to be one of the safest
and strongest encryption algorithm.
Also, even if there are multiple occurences of strings, each strings will be
encrypted to different strings so the reader can't guess about them.
In this project, we tried to show some design philosopy of UNIX including:
- Rule of Composition (can interact with other programs through pipe)
- Rule of Least Surprise (simple command line interface)
- Rule of Silence (does not print unnecessary output)
Contributor:
Contributors to this project:
hyunmoon@vt.edu
kpeng16@vt.edu (Fork:https://github.com/PengK/wordcrypt-1)