jsteg Logo

jsteg

0
Free
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

ALTERNATIVES

Kiteworks is a unified platform that secures, tracks, and controls sensitive content communications across email, file sharing, managed file transfer, and web forms to ensure regulatory compliance and data protection.

Commercial

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

Realtime privacy monitoring service for smartphones that analyzes how apps handle private information.

Audio file steganography tool

Calculates RSA parameters and generates RSA private keys in DER or PEM format.

A data security and governance platform that provides automated discovery, classification, and protection of sensitive data across cloud, on-premises, and hybrid environments.

Commercial

Recoverjpeg is a tool for recovering JPEG images from damaged storage media.

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

PINNED