Cryptography : CrypTool 2

 

Hands-on Practice

- CrypTool

 

What is OS CrypTool?

Well-known e-learning platform for cryptography and cryptanalysis, Open source

Download link : https://www.cryptool.org/en/ct2-downloads

 

Substitution Cipher Caesar cipher

The action of a Caesar cipher is to move each letter a number of places down the alphabet. This example is with a shift of three, so that a B in the plaintext becomes E in the ciphertext.

ci = E(pi) = pi + 3

Transposition Cipher

 

One Time Pad