keygentoolshed/keyGen/serpentKeyGenerator.js

Key generation utilities for cryptographic operations. QUANTUM ENCRYPTION FOLDER UPDATE!!! See its folder for all <3

import crypto from 'crypto'

// Function to generate a random 256-bit key (32 bytes)
function generateSerpentKey() {
  return crypto.randomBytes(32); // 32 bytes = 256 bits
}

// S-boxes for the Serpent algorithm
const S_BOXES = [
  // S0
  [0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76],
  // S1
  [0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0x4c, 0x5c, 0x3d],
  // S2
  [0x7f, 0x94, 0x9b, 0x4a, 0x0f, 0x3a, 0x4d, 0x2c, 0x5e, 0xa0, 0x8c, 0xb1, 0x7b, 0x8f, 0x10, 0x3b],
  // S3
  [0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0x9d, 0x3e, 0x4f, 0x5c, 0x6d, 0x7e, 0x8f, 0x9a, 0x0b],
  // Additional S-boxes would be defined here...
];

// Function to apply S-box transformation
function applySBox(byte, sBoxIndex) {
  const row = (byte >> 4) & 0x0F; // Get the row (first 4 bits)
  const col = byte & 0x0F;        // Get the column (last 4 bits)
  return S_BOXES[sBoxIndex][col]; // Use the specified S-box
}

// Function to perform key scheduling
function keySchedule(key) {
  const roundKeys = [];
  const numRounds = 32; // Serpent uses 32 rounds

  // Initial key expansion
  for (let i = 0; i < numRounds; i++) {
      const roundKey = Buffer.alloc(32);
      for (let j = 0; j < key.length; j++) {
          // Apply S-box transformation and XOR with the round index
          roundKey[j] = applySBox(key[(j + i) % key.length], j % S_BOXES.length) ^ i;
      }
      roundKeys.push(roundKey);
  }
  return roundKeys;
}

// Function to generate the Serpent key and its round keys
function generateSerpentKeyAndSchedule() {
  const key = generateSerpentKey();
  const roundKeys = keySchedule(key);
  return { key, roundKeys };
}

// Generate the key and round keys
const result = generateSerpentKeyAndSchedule();
console.log("Generated Serpent Key (HEX):", result.key.toString('hex'));
console.log("Round Keys (HEX):", result.roundKeys.map(k => k.toString('hex')));