Steghide

https://github.com/steghigh/steghide
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Steghide is a steganography program that hides data in image and audio files using compression,...
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### Steghide Encryption Configuration Examples

Source: https://context7.com/steghigh/steghide/llms.txt

Demonstrates various encryption configurations for steghide using different ciphers and modes, including the default rijndael-128 (AES-128) in CBC mode. It also shows how to disable encryption.

```bash
# Use default encryption (rijndael-128 cbc) - recommended
steghide embed -cf cover.jpg -ef secret.txt
```

```bash
# Use AES-256 with CBC mode for stronger encryption
steghide embed -cf cover.jpg -ef secret.txt -e rijndael-256 cbc
```

```bash
# Use Twofish encryption (alternative to AES)
steghide embed -cf cover.jpg -ef secret.txt -e twofish
```

```bash
# Use serpent with counter mode
steghide embed -cf cover.jpg -ef secret.txt -e serpent ctr
```

```bash
# Use blowfish with cipher feedback mode
steghide embed -cf cover.jpg -ef secret.txt -e blowfish cfb
```

```bash
# Use Triple DES for compatibility
steghide embed -cf cover.jpg -ef secret.txt -e tripledes cbc
```

```bash
# Disable encryption entirely (not recommended)
steghide embed -cf cover.jpg -ef secret.txt -e none
```

--------------------------------

### Get File Information - Steghide

Source: https://context7.com/steghigh/steghide/llms.txt

Displays information about a cover or stego file, including its format and embedding capacity. Can also show details about embedded data if a passphrase is provided. Supports reading from files or standard input.

```bash
steghide info cover_image.jpg
```

```bash
steghide info received_file.wav
```

```bash
steghide info stego.jpg -p "my passphrase"
```

```bash
cat image.jpg | steghide info -
```

--------------------------------

### Steghide Version and Help Commands

Source: https://context7.com/steghigh/steghide/llms.txt

These commands display version information, license details, and comprehensive usage help for steghide. They are essential for understanding the tool's capabilities and options.

```bash
steghide version
# steghide version 0.5.1
```

```bash
steghide license
# Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
# This program is free software...
```

```bash
steghide help
# steghide version 0.5.1
#
# the first argument must be one of the following:
#  embed, --embed          embed data
#  extract, --extract      extract data
#  info, --info            display information about a cover- or stego-file
# ...
```

--------------------------------

### Version and Help Commands

Source: https://context7.com/steghigh/steghide/llms.txt

These commands provide information about the steghide tool, including its version, license, and comprehensive usage instructions.

```APIDOC
## Version and Help Commands

These commands display version information, license details, and comprehensive usage help for all steghide operations and options.

### Display version information
```bash
steghide version
# steghide version 0.5.1
```

### Display license information
```bash
steghide license
# Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
# This program is free software...
```

### Display comprehensive help with all options
```bash
steghide help
# steghide version 0.5.1
#
# the first argument must be one of the following:
#  embed, --embed          embed data
#  extract, --extract      extract data
#  info, --info            display information about a cover- or stego-file
# ...
```
```

--------------------------------

### Steghide Compression Options

Source: https://context7.com/steghigh/steghide/llms.txt

Illustrates how to use zlib for lossless compression of embedded data in steghide, with options for different compression levels (1-9) and disabling compression.

```bash
# Default compression (level 6)
steghide embed -cf cover.jpg -ef data.txt
```

```bash
# Maximum compression for large text files
steghide embed -cf cover.jpg -ef large_document.txt -z 9
```

```bash
# Fast compression when speed matters
steghide embed -cf cover.jpg -ef data.txt -z 1
```

```bash
# No compression (for already compressed data like ZIP, JPEG)
steghide embed -cf cover.wav -ef archive.zip -Z
```

```bash
# No compression and no encryption for maximum capacity
steghide embed -cf cover.bmp -ef data.bin -Z -e none
```

--------------------------------

### List Encryption Algorithms - Steghide

Source: https://context7.com/steghigh/steghide/llms.txt

Displays all available encryption algorithms and their supported cipher modes. This command helps users select appropriate encryption parameters for the embed command based on their security needs.

```bash
steghide encinfo
```

--------------------------------

### Compression Options

Source: https://context7.com/steghigh/steghide/llms.txt

Steghide utilizes zlib for lossless data compression, with levels from 1 (fastest) to 9 (best compression). Compression can be disabled using the -Z option.

```APIDOC
## Compression Options

Steghide uses zlib for lossless compression of embedded data, reducing the amount of cover file capacity needed. Compression levels range from 1 (fastest) to 9 (best compression).

### Default compression (level 6)
```bash
steghide embed -cf cover.jpg -ef data.txt
```

### Maximum compression for large text files
```bash
steghide embed -cf cover.jpg -ef large_document.txt -z 9
```

### Fast compression when speed matters
```bash
steghide embed -cf cover.jpg -ef data.txt -z 1
```

### No compression (for already compressed data like ZIP, JPEG)
```bash
steghide embed -cf cover.wav -ef archive.zip -Z
```

### No compression and no encryption for maximum capacity
```bash
steghide embed -cf cover.bmp -ef data.bin -Z -e none
```
```

--------------------------------

### Embed Data into Cover File - Steghide

Source: https://context7.com/steghigh/steghide/llms.txt

Hides secret data within a cover file (image or audio), creating a stego file. The process includes compression, encryption, and distribution using a pseudo-random sequence derived from a passphrase. Supports various options for output file, compression level, encryption, and verbosity.

```bash
steghide embed -cf picture.jpg -ef secret.txt
```

```bash
steghide embed -cf cover_image.jpg -ef confidential.pdf -sf stego_output.jpg
```

```bash
steghide embed -cf audio.wav -ef message.txt -p "my secret passphrase"
```

```bash
steghide embed -cf image.bmp -ef data.zip -Z
```

```bash
steghide embed -cf cover.jpg -ef largefile.txt -z 9
```

```bash
steghide embed -cf cover.jpg -ef public_data.txt -e none
```

```bash
steghide embed -cf cover.wav -ef secret.txt -e twofish cbc
```

```bash
steghide embed -cf cover.jpg -ef tiny.txt -K
```

```bash
steghide embed -cf cover.jpg -ef secret.txt -N
```

```bash
steghide embed -cf large_image.jpg -ef data.bin -v
```

```bash
cat secret.txt | steghide embed -cf cover.jpg -sf output.jpg -p "passphrase"
```

--------------------------------

### Supported File Formats

Source: https://context7.com/steghigh/steghide/llms.txt

Steghide supports embedding data in JPEG, BMP, WAV, and AU file formats. The capacity varies based on the file type and size.

```APIDOC
## Supported File Formats

Steghide supports embedding data in four file formats, automatically detected by header information. Each format has different capacity characteristics based on file size and content.

### JPEG images
Good capacity, maintains visual quality.
```bash
steghide embed -cf photo.jpg -ef secret.txt
```

### BMP images
High capacity, lossless format.
```bash
steghide embed -cf image.bmp -ef document.pdf
```

### WAV audio
PCM encoding, capacity depends on sample rate.
```bash
steghide embed -cf audio.wav -ef message.txt
```

### AU audio
Sun/NeXT audio format.
```bash
steghide embed -cf sound.au -ef data.bin
```

### Check capacity of different file types
```bash
steghide info photo.jpg    # format: jpeg, capacity: 15.2 KB
steghide info image.bmp    # format: Windows 3.x bitmap, capacity: 45.7 KB
steghide info audio.wav    # format: wave audio, PCM encoding, capacity: 3.5 KB
steghide info sound.au     # format: au audio, capacity: 2.1 KB
```
```

--------------------------------

### Encryption Configuration

Source: https://context7.com/steghigh/steghide/llms.txt

Steghide offers various encryption algorithms and modes, including Rijndael (AES), Twofish, Serpent, Blowfish, and Triple DES, with support for ECB, CBC, CFB, OFB, and CTR modes.

```APIDOC
## Encryption Configuration

Steghide provides extensive encryption options through the libmcrypt library, supporting both block ciphers with various modes and stream ciphers. The default is rijndael-128 (AES-128) in CBC mode.

### Default encryption (rijndael-128 cbc) - recommended
```bash
steghide embed -cf cover.jpg -ef secret.txt
```

### AES-256 with CBC mode for stronger encryption
```bash
steghide embed -cf cover.jpg -ef secret.txt -e rijndael-256 cbc
```

### Twofish encryption (alternative to AES)
```bash
steghide embed -cf cover.jpg -ef secret.txt -e twofish
```

### Serpent with counter mode
```bash
steghide embed -cf cover.jpg -ef secret.txt -e serpent ctr
```

### Blowfish with cipher feedback mode
```bash
steghide embed -cf cover.jpg -ef secret.txt -e blowfish cfb
```

### Triple DES for compatibility
```bash
steghide embed -cf cover.jpg -ef secret.txt -e tripledes cbc
```

### Disable encryption entirely (not recommended)
```bash
steghide embed -cf cover.jpg -ef secret.txt -e none
```
```

--------------------------------

### Steghide Supported File Formats for Embedding

Source: https://context7.com/steghigh/steghide/llms.txt

Steghide supports embedding data in JPEG, BMP, WAV, and AU file formats. The 'info' command can be used to check the capacity of these files.

```bash
# JPEG images - good capacity, maintains visual quality
steghide embed -cf photo.jpg -ef secret.txt
```

```bash
# BMP images - high capacity, lossless format
steghide embed -cf image.bmp -ef document.pdf
```

```bash
# WAV audio - PCM encoding, capacity depends on sample rate
steghide embed -cf audio.wav -ef message.txt
```

```bash
# AU audio - Sun/NeXT audio format
steghide embed -cf sound.au -ef data.bin
```

```bash
# Check capacity of different file types
steghide info photo.jpg    # format: jpeg, capacity: 15.2 KB
steghide info image.bmp    # format: Windows 3.x bitmap, capacity: 45.7 KB
steghide info audio.wav    # format: wave audio, PCM encoding, capacity: 3.5 KB
steghide info sound.au     # format: au audio, capacity: 2.1 KB
```

--------------------------------

### Extract Hidden Data - Steghide

Source: https://context7.com/steghigh/steghide/llms.txt

Retrieves hidden data from a stego file using the correct passphrase. Automatically decrypts, decompresses, and verifies data integrity via CRC32 checksum. Supports specifying output filename, extracting to stdout, overwriting existing files, and quiet or verbose modes.

```bash
steghide extract -sf picture.jpg
```

```bash
steghide extract -sf stego_image.jpg -p "my secret passphrase"
```

```bash
steghide extract -sf stego.wav -xf recovered_data.txt
```

```bash
steghide extract -sf stego.jpg -xf - -p "passphrase" | less
```

```bash
steghide extract -sf stego.bmp -f
```

```bash
steghide extract -sf stego.jpg -p "passphrase" -q
```

```bash
steghide extract -sf stego.au -p "passphrase" -v
```
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