README
----------
This is a project I did myself to help me practice my C++ programming.
I implemented the RSA-OAEP encryption/decryption algorithms, and wrote
some code to read and write Der-Pem encoded RSA public/private keys.

The padding scheme is OAEP-MGF1(SHA256), which is used to make the
entire RSA-OAEP algorithm CPA (Chosen Plaintext Attack) Secure.
I also read what I believe is the standards document for RSA - RFC 3447 -
and have followed their explanation of the RSADS-OAEP algorithm, so
that my implementation won't be subject to timing attacks (hopefully).

I used the GNU GMP (GNU Multiple Precision) Library as my arbitrary
precision library.

Dependencies
---------------
	+ Linux/Unix Operating System
	+ gcc/g++ Compiler
	+ GMP Library must be installed with C++ enabled (http://www.gmplib.org/)

*Note: I've only tested my project on Mac OS X 10.8.4 and on Ubuntu 12.10,
so I don't know how it will run on other operating systems.

My project's executable programs are in the Demos folder, and can be
compiled by typing 'make <file_name>' and replacing <file_name> with the
name of program (ex. mask.cc --> 'make mask').

Also, I used valgrind to check my programs for memory leaks, and it
showed that there were none.	:)

References
--------------
Here is a list of my sources, which I used to research the RSA-OAEP
algorithm, and found very helpful when I got stuck.

1. PKCS#1 Crypto Standard PDF
(http://www.rsa.com/rsalabs/pkcs/files/h11300-wp-pkcs-1v2-2-rsa-cryptography-standard.pdf)
2. Wikipedia - RSA (algorithm)
(http://en.wikipedia.org/wiki/RSA_(algorithm))
3. Wikipedia - OAEP
(http://en.wikipedia.org/wiki/Optimal_Asymmetric_Encryption_Padding)
4. Wikipedia - PKCS#1
(http://en.wikipedia.org/wiki/PKCS1)
5. Microsoft ASN.1 Documentation
(http://msdn.microsoft.com/en-us/library/windows/desktop/bb540796(v=vs.85).aspx)
6. Cryptography 1 Course
(http://coursera.org/)
7. StackOverflow
(I lost track of the links... oops)