Create customCipher
Create customCipher

Used substitution cipher and Columnar transform concepts.
Take a string from the user. 
Added 3 as key to shift alphabets. 
Place alphabet at position 2^position. 
Fill blanks with random alphabets such that string length is a multiple of 4. 
Divide into 4 equal parts. 
Copy starting alphabet of part one, followed by last of part 4.
Repeat till both parts empty.
Repeat process for parts 2,3.
This is encrypted text.
Reverse the same for decryption.
duckvader/Cryptography