snowdrop - plain text watermarking and watermark recovery

Property Value
Distribution Ubuntu 16.04 LTS (Xenial Xerus)
Repository Ubuntu Universe i386
Package name snowdrop
Package version 0.02b
Package release 12.1
Package architecture i386
Package type deb
Installed size 206 B
Download size 47.96 KB
Official Mirror
Snowdrop provides reliable, difficult to remove stenographic watermarking of
text documents (internal memos, draft research papers, advisories and other
writing) and C sources (limited distribution software, licensed software,
or freely available code) so that:
(1) leaks can be identified if the data goes public
(2) original source can be determined and demonstrated if part of the
document is claimed by somebody else, copied without permission, etc
Snowdrop uses redundant steganography using four different logical
channels, and should be proof to many modifications, including reformatting,
spell checking and so on.
Warning: Snowdrop is currently in beta, and may produce bad or corrupted
results, especially when run on C source code.


Package Version Architecture Repository
snowdrop_0.02b-12.1_amd64.deb 0.02b amd64 Ubuntu Universe
snowdrop - - -


Name Value
libc6 >= 2.7
libgnutls-openssl27 -


Type URL
Binary Package snowdrop_0.02b-12.1_i386.deb
Source Package snowdrop

Install Howto

  1. Update the package index:
    # sudo apt-get update
  2. Install snowdrop deb package:
    # sudo apt-get install snowdrop




2014-04-06 - Andreas Metzler <>
snowdrop (0.02b-12.1) unstable; urgency=medium
* Non-maintainer upload.
* Build-Depend on libgnutls-openssl-dev instead of libgnutls-dev to allow
transitioning to newer GnuTLS. Closes: #731474
* Stop unnecessary linkage against gnutls-extra to allow building against
newer GnuTLS versions. Closes: #725723
2013-08-30 - Simon Kainz <>
snowdrop (0.02b-12) unstable; urgency=low
* Fixed typos in snowdrop.c (fix-typos-in-source.patch).
* Moved info from README.Debian-source concerning upstream into debian/watch.
2013-08-21 - Simon Kainz <>
snowdrop (0.02b-11) unstable; urgency=low
* New maintainer. (Closes: #557585: ITA: snowdrop -- plain text
watermarking and watermark recovery)
* Push standards to the most recent version 3.9.4
* Fix several typos in man page.
* Fix wrong file entry in man page.
2011-10-01 - Arno Töll <>
snowdrop (0.02b-10) unstable; urgency=low
* QA upload.
* Move VCS to Alioth (collab-maint), update VCS links in debian/control
* Make package ready for dpkg 1.16.1 and inject build flags into the build
* Fix a small syntax error in debian/changelog to make it correctly recognize
the new last paragraph.
* The debian/ directory is also relicensed to GPL-2+ with OpenSSL linking
exception to avoid any possible ambiguity.
2011-06-30 - Arno Töll <>
snowdrop (0.02b-9) unstable; urgency=low
* QA upload.
* Push debhelper compatibility to v8
* Convert package to 3.0 (quilt) format
* Move man page to debian/ (thus, leave upstream source directory untouched)
* Track changes to upstream source in a quilt patch (use-tls.patch)
* Link as needed (-Wl,--as-needed, in link-as-needed.patch)
* Push Standards to the most recent version 3.9.2
* Fix "Very minor typo in manpage" fix several typos (Closes: #608868)
* Switch debian/copyright to DEP-5
* Use `pkg-config' in Makefile instead of `libgnutls-config'. The latter was
obsolete since GnuTLS
* Provide future uploaders a hint in `debian/README.Debian-source' to learn
about changes in the upstream tarball, as the original file is not ver-
2008-05-27 - Joey Hess <>
snowdrop (0.02b-8) unstable; urgency=low
* Orphaned the package.
* debhelper v7; 3 line rules file
2007-12-18 - Joey Hess <>
snowdrop (0.02b-7) unstable; urgency=low
* Add Homepage field.
* Current policy.
2006-02-19 - Joey Hess <>
snowdrop (0.02b-6) unstable; urgency=low
* Add word "stenographic" to description. Closes: #353591
2005-10-25 - Joey Hess <>
snowdrop (0.02b-5) unstable; urgency=low
* Updated to gnutls12. Closes: #335770
2004-08-10 - Joey Hess <>
snowdrop (0.02b-4) unstable; urgency=low
* Updated to libgnutls11. Closes: #264736
(NB: still linked to libgcrypt7 as well as 11 because of libopencdk8.
versioned symbols make this work, I'll rebuild when libopencdk8 is
* Work around temporary breakage in libgnutls-extra-config.
* Add -g to CFLAGS.

See Also

Package Description
snp-sites_2.1.3-2_i386.deb Binary code for the package snp-sites
snpomatic_0.0.20151015-1_i386.deb fast, stringent short-read mapping software
sntop_1.4.3-4build1_i386.deb A curses-based utility that polls hosts to determine connectivity
so-synth-lv2_1.4-2_i386.deb Set of synthesizers for the LV2 plugin format
socat_1.7.3.1-1_i386.deb multipurpose relay for bidirectional data transfer
socket_1.1-10_i386.deb Multi purpose socket tool
socklog-run_2.1.0-8_all.deb system and kernel logging services
socklog_2.1.0-8_i386.deb system and kernel logging services (programs)
socks4-clients_4.3.beta2-19build1_i386.deb Socks4 enabled clients as rtelnet and rftp
socks4-server_4.3.beta2-19build1_i386.deb SOCKS4 server for proxying IP-based services over a firewall
sockstat_0.3-1.1_i386.deb view detailed information about open connections
socnetv_1.9-1.1_i386.deb Social Network Analysis and Visualisation application
sofa-apps_1.0~beta4-10ubuntu2_i386.deb GUI for the Simulation Open Framework Architecture (SOFA)
sofa-data_1.0~beta4-10ubuntu2_all.deb Simulation Open Framework Architecture - data
sofa-tutorials_1.0~beta4-10ubuntu2_all.deb Simulation Open Framework Architecture - tutorials