DES Algorithm Tutorials | Cryptography | Weak Keys | Examples and Python Code link in Description
The Data Encryption Standard (DES) is a symmetric-key block cipher published by the National Institute of Standards and Technology (NIST).
DES is an implementation of a Feistel Cipher. It uses a 16 round Feistel structure. The block size is 64-bit. Though the key length is 64-bit, DES has an effective key length of 56 bits since 8 of the 64 bits of the key are not used by the encryption algorithm
Since DES is based on the Feistel Cipher, all that is required to specify DES is −
Round function
Key schedule
Any additional processing − Initial and final permutation
PDF used in the tutorial - https://drive.google.com/open?id=1cOf...
Python Code - https://colab.research.google.com/dri...
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