Mad science - Hiding secrets in any written text exploiting Unicode

栏目: IT技术 · 发布时间: 4年前

内容简介:StegCloak is a pure JavaScript steganography module designed in functional programming style, to hide secrets inside text by compressing and encrypting the secret before cloaking it with special unicode invisible characters. It can be used to safely waterm

Mad science - Hiding secrets in any written text exploiting Unicode StegCloak

The Cloak of Invisibility for your texts

StegCloak is a pure JavaScript steganography module designed in functional programming style, to hide secrets inside text by compressing and encrypting the secret before cloaking it with special unicode invisible characters. It can be used to safely watermark strings, invisible scripts on webpages, texts on social media or for any other covert communication. Completely invisible! See how it works in-depth in this Medium article or watch our demo to know what it does.

Features

  • Protect your invisible secret using passwords and HMAC integrity
  • Cryptographically secure by encrypting the invisible secret using AES-256-CTR.
  • Uses 6 Invisible characters in unicode characters that works everywhere in the web - Tweets, Gmail, WhatsApp, Telegram, Instagram, Facebook, and many more!
  • Maximum Compression to reduce the payload (LZ, Huffman).
  • Completely invisible, uses Zero Width Characters instead of white spaces or tabs.
  • Super fast! Hides the Wikipedia page-source for steganography (800 lines and 205362 characters) within a covertext of 3 words in under one second.
  • Hiding files in strings can be achieved by uploading the file to cloud and stegcloaking the link in the string
  • Written in pure functional style.
  • Usage - Available as an API module, a CLI and also a Web Interface (optimized with web workers).

Mad science - Hiding secrets in any written text exploiting Unicode

Installing

Using npm,

$ npm install -g stegcloak

Using npm (to use it locally in your program),

$ npm install stegcloak

How it works

Mad science - Hiding secrets in any written text exploiting Unicode

CLI Usage

Hide

$ stegcloak hide

Options:

hide [options] [secret] [cover]

  -fc, --fcover <file>      Extract cover text from file
  -fs, --fsecret <file>     Extract secret text from file
  -n, --nocrypt             If you don't need encryption (default: false)
  -i, --integrity           If additional security of preventing tampering is needed (default: false)
  -o, --output <output>     Stream the results to an output file
  -c, --config <file>       Config file
  -h, --help                display help for command

Reveal

$ stegcloak reveal

Options:

reveal [message]

  -f, --file <file>       Extract message from file
  -cp, --clip             Copy message directly from clipboard
  -o, --output <output>   Stream the secret to an output file
  -c, --config <file>     Config file
  -h, --help              display help for command

Additional support

  • STEGCLOAK_PASSWORDenvironment variable, if set, will be used by default as password.

  • Configuration filesupport to configure StegCloak CLI and to avoid prompts. Read the config docs here.

API Usage

const StegCloak = require('stegcloak');

const stegcloak = new StegCloak(true, false);  // Initializes with encryption true and hmac false for hiding

// These arguments are used only during hide

// Can be changed later by switching boolean flags for stegcloak.encrypt and stegcloak.integrity

What's HMAC and do I need it?

HMAC is an additional fingerprint security step taken towards tampering of texts and to verify if the message received was actually sent by the intended sender. If the data is sent through WhatsApp, Messenger or any social media platform, this is already taken care of! However, if you are using StegCloak in your program to safely transmit and retrieve, this option can be enabled and StegCloak takes care of it.

Hide

stegcloak.hide(secret, password, cover) -> string

const magic = stegcloak.hide("Voldemort is back", "mischief managed", "The WiFi's not working here!");

// Uses stegcloak.encrypt and stegcloak.integrity booleans for obfuscation

console.log(magic);  // The WiFi's not working here!

Reveal

stegcloak.reveal(data, password) -> string

const secret = stegcloak.reveal(magic, "mischief managed");

// Automatically detects if encryption or integrity checks were done during hide and acts accordingly

console.log(secret); // Voldemort is back

This amazing blog by Francesco Soncina shows how you could use the StegCloak API to watermark any text on your website.

Important

StegCloak doesn't solve the Alice-Bob-Warden problem, it's powerful only when people are not looking for it and it helps you achieve that really well, given its invisible properties around the web! It could be safely used for watermarking in forums, invisible tweets, social media etc. Please don't use it when you know there's someone who is actively sniffing your data - looking at the unicode characters through a data analysis tool. In that case, even though the secret encoded cannot be deciphered, the fact lies that the Warden (middle-man) knows some secret communication took place, because he would have noticed an unusual amount of special invisible characters.

Resources

The following papers were referred to for insight and understanding of using Zero Width Characters in steganography.

  • Milad Taleby Ahvanooey, Qianmu Li , Jun Hou, Ahmed Raza Rajput and Chen Yini
Modern Text Hiding, Text Steganalysis, and Applications: A Comparative Analysis
  • Taleby Ahvanooey, Milad & Li, Qianmu & Hou, Jun & Dana Mazraeh, Hassan & Zhang, Jing.
AITSteg: An Innovative Text Steganography Technique for Hidden Transmission of Text Message via Social Media.
IEEE Access

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

License

MIT - Copyright (c) 2020 Jyothishmathi CV , Kandavel A , Mohanasundar M

Acknowledgements

The StegCloak logo was designed by Smashicons .


以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持 码农网

查看所有标签

猜你喜欢:

本站部分资源来源于网络,本站转载出于传递更多信息之目的,版权归原作者或者来源机构所有,如转载稿涉及版权问题,请联系我们

Spring揭秘

Spring揭秘

王福强 / 人民邮电出版社 / 2009.8 / 99.00元

没有教程似的训导,更多的是说故事般的娓娓道来,本书是作者在多年的工作中积累的第一手Spring框架使用经验的总结,深入剖析了Spring框架各个模块的功能、出现的背景、设计理念和设计原理,揭开了Spring框架的神秘面纱,使你“知其然,更知其所以然”。每部分的扩展篇帮助读者活学活用Spring框架的方方面面,同时可以触类旁通,衍生出新的思路和解决方案。 本书内容全面,论述深刻入理,必将成为每......一起来看看 《Spring揭秘》 这本书的介绍吧!

RGB转16进制工具
RGB转16进制工具

RGB HEX 互转工具

正则表达式在线测试
正则表达式在线测试

正则表达式在线测试

HEX HSV 转换工具
HEX HSV 转换工具

HEX HSV 互换工具