Cipher Implementaions

Caesar Cipher

How to run:

Encrypt:

python main.py -e -m "The message of secret" -k 8

Decrypt:

python main.py -d "APMHUM  IOMHWNH MKZMA" -k 8

Both:

python main.py -ed -m "The message of secret" -k 8

• -k/--key is optional as it defaults to 3

Affine Cipher

Comming soon

Playfair Cipher

How to run:

Encrypt:

python main.py -e -m "charlemagne" -k "AACHEN"

Decrypt:

python main.py -d -m "HECQOCKHIEHY" -k "AACHEN"

• Encryption is working.
• Code needs optimization.
• Spaces will break the code.
• Double letters are not welcome in message at the moment.

Hill Cipher

How to run:

Encrypt:

python main.py -e -m "USMAN" -k "7 8 11 11"

Decrypt (Not implemented yet):

python main.py -d -m "" -k "7 8 11 11"

• Support for space can be activated by changing mod to 27.
• Mod value will be changed to 27 if space is present in message.

SDES

Simplified Data Encryption Standard

• Only key generation is implemented yet.

python main.py

Deffie Hellman

• We have to check for repetition for ourselves (for now).

python main.py