Fix manifest.
Add scripts folder.
Fix write length.
Add RSA class.
Add random key generation to DES.
Fix RSA
Merge origin/master

Conflicts:
	src/crypto/ciphers/block/feistel/FeistelCipher.java
	test data/img test/outputFile
	test data/img test/outputFileDecrypted
fix bitbuffer
fix RSA non-positive problem.
Fix key generation on DES to be used with BigIntegers.
Grant access to private keys on RSA.