Hide2.txt on top of it, using error correcting codes. Outguess will first embed hide1.txt and then If you want to embed a second message, use: outguess -k "secret1" -d hide1.txt -E Will retrieve the hidden message from the image. Outguess -k "my secret pass phrase" -d hidden.txt monkey.jpg out.jpgĪnd in the other direction: outguess -k "my secret pass phrase" -r out.jpg To embed the message hidden.txt into the monkey.jpg image: If no filenames are specified outguess operatesĪs a filter and assumes the PPM data format. Outguess determines the data format by theįilename extension. Repeated use increasesįor embedding messages, you need to specify a source and aĭestination filename. t Collect statistics about redundant bit usage. The higher the quality the more bits to hide a message in theĭata are available. Image format, this is the compression quality, it can take values betweenħ5 and 100. p param Passes a string as parameter to the destination data handler. x maxkeys If the second key does not create an iterator object that is successful inĮmbedding the data, the program will derive up to specified number of new Outguess: -r Retrieve a message from a data object. Other options that apply to the general execution of eE Use error correction for data encoding and decoding. iI limit Specify the upper limit for finding an optimal iterator seed. This seed without searching for a more optimal embedding. If no upper limit is specified, the iterator will use sS seed Specify the initial seed the iterator object uses for selecting bits in dD datafile Specify the filename containing a message to be hidden in the data. kK key Specify the secret key used to encrypt and hide the message in the Will be able to detect steganographic content.
As a result, no statistical test that is based on frequency counts F Specifies that OutGuess should preserve statistics based on frequencyĬounts.
The following command line options, when specified as capital letters, indicate Artificial errors are introduced to avoid modifying bits that
OUTGUESS .EXE CODE
(23,12,7) Golay code is used for error correction to tolerate collisions on Keeps track of the bits that have been modified previously and locks them. Were extracted from a high value, and tries to avoid the modification ofīits that were extracted from a low value.Īdditionally, Outguess allows for the hiding of twoĭistinct messages in the data, thus providing plausible deniability.
Of bits that minimizes the number of changes in the data that have to beĪ bias is introduced that favors the modification of bits that By altering the seed, outguess tries to find a sequence It is embedded in the data along with the rest of A seed can be used to modify theīehavior of the iterator. Outguess uses a generic iterator object to select whichīits in the data should be modified. Supported, although outguess could use any kind of data, as long as a Currently only the PPM, PNM, and JPEG image formats are On data specific handlers that will extract redundant bits and write them backĪfter modification. The nature of theĭata source is irrelevant to the core of outguess. Hidden information into the redundant bits of data sources. SYNOPSIS ¶ outguess [ĭESCRIPTION ¶ Outguess is a universal steganographic tool that allows the insertion of
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