A Visual Guide to Data Encryption Standard (ECB Mode) Details

There is an issue with the canvas demo that could potentially lead to page crash due to memory leaks. Unfortunately, I have not yet been able to identify the root cause of this problem. As a result, I have developed A NEW BLOG that employs some new frameworks to draw the demo. The new blog has a significantly lower probability of experiencing page crashes.

The following diagram illustrates the step-by-step details of DES encryption (ECB mode (Electronic Codebook), Version FIPS46-2 (1990-12-30)) and how each bit changes throughout the process.

Plaintext: Key(64-bit hex form):
// equivalent openssl command (legacy mode)
echo -n 'hello世界😊' | openssl des-ecb -a -nosalt -K a1a2a3a4a5a6a7a8 -provider legacy

Key Concepts

  • Modes & Blocks
  • Initial Permutation
  • Key Schedule
  • 16 Iteration
  • F Function
  • Expansion
  • Substitution
  • Permutation
  • Final Permutation

References