steghide 0.5.1 :
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* new algorithm that maintains first-order statistics for all file formats
* support for all types of jpeg files (using libjpeg)
* compression of embedded data (using zlib)
* use of permutation as distribution function
* a 'info' command to display the information about a cover- or stego- file (including it's capacity)
* random data can be taken from /dev/urandom
* spanish translation
* romanian translation
steghide 0.4.6b :
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* bugfix (did not compile on some systems)
steghide 0.4.6 :
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* support for the jpeg file format
* switched from C to C++ (partial rewrite)
* bugfixes
steghide 0.4.5 :
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* internationalization (GNU gettext)
* german locale
* french locale
steghide 0.4.4 :
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* performance rewrite of memory management code
steghide 0.4.3 :
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* support for crc32 checksum of the plain data
* switch to enable/disable embedding of plain file name
* rewrite of some parts
steghide 0.4.2 :
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* interval length defaults to the maximum possible
* verbosity, quiet and force switches
* prompt for passphrase if not given on command line
steghide 0.4.1 :
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* more secure embedding algorithm
* libmcrypt is used for encryption
* libmhash is used for hashing
* command line syntax revision
* reorganisation and partial rewrite
* bugfixes
steghide 0.3 :
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* blowfish encryption
* md5 for generating 128 bit keys from passphrase
* autconf and automake
* rpm packages
* support for au files
* man page
* interactive mode
* command line syntax revision
* fixed a bug that prevented the use of stdin as cover or stego data stream
steghide 0.2 :
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* support for wav (pcm) files
* support for bmp files that use color tables
* support for OS/2 1.x bmp files
* file format auto-detection
* internal changes (better buffer-management)