chromarotor 1.0.5

image-driven enigma-style cipher

Chromarotor

An enigma-inspired cipher that uses image pixels as dynamic rotors to encrypt and scramble data.
Hecho en 🇵🇷 por Radamés J. Valentín Reyes
Orgullosamente Boricua

Note

• Now it works more like enigma. For every byte the rotor configuration (image) changes.
• Incompatible with previous versions
• Takes a lot more time to process

Features

• Symmetric encryption
• No encryption overhead (file/data size is kept. not increased/bloated)
• Easy to use
• Data obfuscation - Bytes are shuffled.
• Now uses BigInt as seed instead of int
• Now uses big_dec for calculations
• Now uses big_random instead of dart's built in random which is restricted to the size of an int

Learn the about image generation

Check out my book on Amazon.

Import

import 'package:chromarotor/chromarotor.dart';

Generate image

Generates a list of rgb values to be used for encryption

ChromaImage image = generateImage(
  seed: password,
  imageSize: 200,
);

Encrypt

List<int> cipheredMessage = chromaRotorCipher(
  chromaImage: image,
  bytes: message.codeUnits,
);

Decrypt

List<int> decipheredMessage = chromaRotorDecipher(
  chromaImage: image,
  cipheredBytes: cipheredMessage,
);

Full Example

BigInt password = BigInt.parse("9684615468496727262");
ChromaImage image = generateImage(
  seed: password,
  imageSize: 200,
);
String message = "Yo soy boricua pa que tu lo sepas.";
print("Message: $message");
List<int> cipheredMessage = chromaRotorCipher(
  chromaImage: image,
  bytes: message.codeUnits,
);
print("Ciphered: ${String.fromCharCodes(cipheredMessage)}");
List<int> decipheredMessage = chromaRotorDecipher(
  chromaImage: image,
  cipheredBytes: cipheredMessage,
);
print("Deciphered: ${String.fromCharCodes(decipheredMessage)}")
print("Message CodeUnits: ${message.codeUnits}");
print("Ciphered CodeUnits: $cipheredMessage");
print("Deciphered CodeUnits: $decipheredMessage");

Credits

• My friend Copilot
• My friend Gemini