pip install pycryptokg

A cryptography library for Python ( both 2.7x and 3.x versions are supported. ) Here's a broad description of the cryptography techniques given

• 1 Substitution ( each character is substituted with another, can be a different space than the plaintext )

  • 1.1 Monalphabetic ( every character is substituted to the same character, no matter the position )

    • 1.1.1 Additive Cipher ( aka Shift, Caesar )
    • 1.1.2 Multiplicative Cipher
    • 1.1.3 Affine Cipher

  • 1.2 Polyalphabetic Cipher ( the value of the substituted character depends on both its value and it's position )

    • 1.2.1 Autokey Cipher
    • 1.2.2 Playfair Cipher
    • 1.2.3 Vignere Cipher
    • 1.2.4 Hill Cipher

• 2 Transpostion ( The orders of the characters is interchanged )

  • 2.1 Keyless Transposition
  • 2.2 Keyed Transposition

• 3 Modern Symmetric Ciphers

  • 3.1 Data Encryption Standard ( DES )
  • 3.2 Advanced Encryption Standard ( AES )

• 1. Rivest, Shamir, Adleman ( RSA ) Cryptosystem
• 2. Rabin Cryptosystem
• 3. Merkle-Hellman Knapsack Cryptosystem
• 4. El-Gamal Cryptosystem
• 5. Elliptic Curve Cryptosystem

Open a terminal and use

pip install pycryptokg

In your Python script, you can use the library as:

from pycryptokg import MonoalphabeticCrypto as MC
from pycryptokg import PolyalphabeticCrypto as PC

mc = MC()
pc = PC()

To use the additive cipher

cipher_text = mc.additive_cipher_encrypt("Sample Text",7)
print(cipher_text)
Zhtwsl'[l {

You can decrypt using

plain = mc.additive_cipher_decrypt(cipher_text, 7)
print(plain)
Sample Text

For detailed information about the API's, use

help(mc.additive_cipher_encrypt)