Skip to main content

Change an image sha signature

Project description

# shachange: Change an image sha signature

[![Build Status](https://travis-ci.org/gabfl/shachange.svg?branch=master)](https://travis-ci.org/gabfl/shachange)

`shachange` is a very simple Python program designed to change the signature of an image (sha1, sha256, md5...) in order to fool computer programs designed to identify unique images based on their signatures.

The modification in the image is virtually impossible to see for a human but computers programs will see the image as a different one.

## How does it work?

- A single pixel is slightly modified: it will change the image signature and will be virtually indistinctible for a human
- For improved security, meta data are removed

## Demo

![Demo](https://github.com/gabfl/shachange/blob/master/img/demo.gif?raw=true)

## Installation

```
pip3 install shachange
```

## Usage

```
shachange --file 'image.jpg'
Current file signature: f482afa0a6d9fa0023df7c35c978b5ccd59e3904 -> from image.jpg
New file signature: a53d273986cb08f5135835744397f2c05e61bc37 -> saved to image_2.jpg
```


Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

shachange-1.2.tar.gz (3.3 kB view hashes)

Uploaded source

Built Distribution

shachange-1.2-py2.py3-none-any.whl (5.5 kB view hashes)

Uploaded py2 py3

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page