jsteg Logo

jsteg

0
Free
Updated 11 March 2025
Visit Website

jsteg is a package for hiding data inside jpeg files, a technique known as steganography. This is accomplished by copying each bit of the data into the least-significant bits of the image. The amount of data that can be hidden depends on the filesize of the jpeg; it takes about 10-14 bytes of jpeg to store each byte of the hidden data. Example: // open an existing jpeg f, _ := os.Open(filename) img, _ := jpeg.Decode(f) // add hidden data to it out, _ := os.Create(outfilename) data := []byte("my secret data") jsteg.Hide(out, img, data, nil) // read hidden data: hidden, _ := jsteg.Reveal(out) Note that the data is not demarcated in any way; the caller is responsible for determining which bytes of hidden it cares about. The easiest way to do this is to prepend the data with its length. A jsteg command is included, providing a simple wrapper around the functions of this package. It can hide and reveal data in jpeg files and supports input/output redirection. It automatically handles length prefixes and uses a magic header to identify jpegs that were produced by jsteg. A more narrowly-focused command named slink is also included. slink embeds a public

FEATURES

SIMILAR TOOLS

Securely wipe files and drives with randomized ASCII dicks.

A tool for creating cryptographically strong volumes that destroy themselves upon tampering or via issued command.

A command line tool for transparently hiding files within images using LSB steganography.

A tool for securely backing up and versioning production secrets or shared passwords

Steghide is a steganography program that hides data in image and audio files.

BleachBit cleans files to free disk space and maintain privacy with various options and command line interface support.

A cloud-native, event-driven data pipeline toolkit for security teams with extensible data processing and serverless deployment.

Pack up to 3MB of data into a tweetable PNG polyglot file.

A steganographic file system in userspace for plausible deniability of files.

PINNED

Proton Pass Logo

Proton Pass is a cross-platform password manager that provides encrypted storage, password generation, and security monitoring features with integrated 2FA and dark web monitoring capabilities.

Data Protection
NordVPN Logo

NordVPN is a commercial VPN service that encrypts internet connections and hides IP addresses through a global network of servers, featuring integrated threat protection and multi-device support.

Network Security
Mandos Logo

Fractional CISO service that helps B2B companies implement security leadership to win enterprise deals, achieve compliance, and develop strategic security programs.

Consulting
Checkmarx SCA Logo

Checkmarx SCA

A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.

Application Security
Orca Security Logo

Orca Security

A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.

Cloud Security
DryRun Logo

DryRun

A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.

Application Security
CyberSecTools logoCyberSecTools

Explore the largest curated directory of cybersecurity tools and resources to enhance your security practices. Find the right solution for your domain.

Operated by:

Mandos Cyber • KVK: 97994448

Netherlands • contact@mandos.io

VAT: NL005301434B12

Copyright © 2025 - All rights reserved