Steghide

Steghide is a steganography program that is able to hide data in various kinds of image- and audio-files. The color- respectivly sample-frequencies are not changed thus making the embedding resistant against first-order statistical tests.

Usage

Usage: steghide <command> [options]

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
• info <filename>: display information about <filename>
• encinfo, --encinfo: display a list of supported encryption algorithms
• version, --version: display version information

Embedding options

Option	Description
-ef, --embedfile	select file to be embedded
-ef <filename>	embed the file <filename>
-cf, --coverfile	select cover-file
-cf <filename>	embed into the file <filename>
-p, --passphrase	specify passphrase
-p <passphrase>	use <passphrase> to embed data
-sf, --stegofile	select stego file
-sf <filename>	write result to <filename> instead of cover-file
-e, --encryption	select encryption parameters
-e <a>[<m>]/<m>[<a>]	specify an encryption algorithm and/or mode
-e none	do not encrypt data before embedding
-z, --compress	compress data before embedding (default)
-z <l>	using level <l> (1 best speed…9 best compression)
-Z, --dontcompress	do not compress data before embedding
-K, --nochecksum	do not embed crc32 checksum of embedded data
-N, --dontembedname	do not embed the name of the original file
-f, --force	overwrite existing files
-q, --quiet	suppress information messages
-v, --verbose	display detailed information

Extracting options

Option	Description
-sf, --stegofile	select stego file
-sf <filename>	extract data from <filename>
-p, --passphrase	specify passphrase
-p <passphrase>	use <passphrase> to extract data
-xf, --extractfile	select file name for extracted data
-xf <filename>	write the extracted data to <filename>
-f, --force	overwrite existing files
-q, --quiet	suppress information messages
-v, --verbose	display detailed information

options for the info command:

Option	Description
-p, --passphrase	specify passphrase
-p <passphrase>	use <passphrase> to get info about embedded data

Examples

To embed emb.txt in cvr.jpg: steghide embed -cf cvr.jpg -ef emb.txt

To extract embedded data from stg.jpg: steghide extract -sf stg.jpg