Simplified DES (S-DES) is an educational tool designed to help students learn the structure of DES using smaller blocks and keys.
- Feistal block cipher
- Plaintext: 8 bit
- Key: 10 bit
- Ciphertext: 8 bit
Use the SimplifiedDES class in your program as follows.
For encryption:
from sdes import SimplifiedDES
plaintext = 0b10101010
key = 0b1110001110
ciphertext = SimplifiedDES(key).encrypt(plaintext) # 0b11001010For decryption:
from sdes import SimplifiedDES
ciphertext = 0b11001010
key = 0b1110001110
plaintext = SimplifiedDES(key).decrypt(ciphertext) # 0b10101010- Check out
theory.pdffor more information and worked out examples. - Simplified DES as an excel workbook
- Data Encryption Standard
MIT