Helper Functions changed from void to String return
Create Functions for Byte Files and KeyFiles
Create Tests for FileManager Functions
Test fixed for Helper Functions changes
XOR Function outsourced to Helper Class
Changed Source Code format
Fixed Size of p and q to 512 Bit instead 1024 Bit
Big Update: 
Fixed Problem with Data bigger than KeySize
Crypt per Block which Length of Keysize - 1 Byte
Put this crypted Block in to extended Block with Keysize + 2 Byte
Put Information about Length of crypted Block in to last Byte of extended Block
XOR every Block with preview Block and Initial Vektor
Add Loop with different File Sizes
Extended Tests
Add Loop with different File Sizes
Update Key Size Check
Add File Cryption Menu
Uodate for File Cryption Menu
Add some Changes for File Cryption
Minor Update