picasso-like-canvas-fingerprinting's Introduction

Picasso based canvas fingerprinting

News:

I recently created a website where you can see your browser fingerprint and different fingerprinting-related signals like your IP address, your canvas fingerprint, your HTTP headers, etc. Some information is accessible both through a webpage and through APIs. Don't hesitate to bookmark it as I will add more signals and more content related to bots.

Implementation of a canvas fingerprinting algorithm inspired by the Picasso paper written by Elie Bursztein.

An online demo is available on my blog.

Quick start

You can host your own version of the Picasso canvas fingerprinting script or include it using Jsdelivr CDN.
<script src="https://cdn.jsdelivr.net/npm/picasso-canvas-fingerprinting/src/canvas.js"></script>

Once the Picasso script is loaded in your HTML page, you can use it as follows:

<script>
    const params = {
        area: {
            width: 300,
            height: 300,
        },
        offsetParameter: 2001000001,
        fontSizeFactor: 1.5,
        multiplier: 15000,
        maxShadowBlur: 50,
    };

    // Number of shapes to draw. The higher the more costly it is.
    // Can be used as a way to adjust the aggressiveness of the proof of work (POW)
    const numShapes = 5;
    const initialSeed = Math.floor(100*Math.random());

    const canvasValue = picassoCanvas(
        numShapes, initialSeed, params
    );

    // canvasValue is a hash representing the result of the Picasso challenge, e.g.
    // c24b4a72badc95284b337aa304be1438
</script>

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picasso-like-canvas-fingerprinting's Issues

seems like cloudflare is using some fork of this library at their bot mitigation scripts

can be found in sites using cloudflare under the url:

/cdn-cgi/bm/cv/669835187/api.js

/**
 * @license
 * Copyright 2020 Cloudflare, Inc.
 * All rights reserved.
 *
 * This work is based on https://github.com/antoinevastel/picasso-like-canvas-fingerprinting, released under the following terms:
 *
 * MIT License
 *
 * Copyright (c) 2019 antoine vastel
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 **/

just wanted to let you know because it feels like this library didnt got much attention

Windows IE support

Hi, Antoine. Thank you for your very interesting project. Is there any way to get it work in IE? I asked you because I'm absolutely not a javascript programmer.