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
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steg86 is a format-agnostic steganographic tool for x86 and AMD64 binaries.
Microsoft BitLocker is a full volume encryption feature in Windows for protecting data on lost or stolen devices, with tools and resources for implementation.
Tool for hiding data inside data and manipulating byte sequences.
Automated tool for detecting steganographic content in images, with F5 detection capabilities.
Encode or encrypt strings to various hashes and formats, including MD5, SHA1, SHA256, URL encoding, Base64, and Base85.
A cloud-native, event-driven data pipeline toolkit for security teams with extensible data processing and serverless deployment.
Discover and protect sensitive data at scale with automated data discovery and security assessment.
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