libotr5-bin - toolkit for Off-the-Record Messaging library

Property Value
Distribution Debian 8 (Jessie)
Repository Debian Main amd64
Package name libotr5-bin
Package version 4.1.0
Package release 2+deb8u1
Package architecture amd64
Package type deb
Installed size 158 B
Download size 36.15 KB
Official Mirror
OTR allows you to have private conversations over IM by providing:
- Encryption
- No one else can read your instant messages.
- Authentication
- You are assured the correspondent is who you think it is.
- Deniability
- The messages you send do not have digital signatures that are
checkable by a third party.  Anyone can forge messages after a
conversation to make them look like they came from you.  However,
during a conversation, your correspondent is assured the messages
they see are authentic and unmodified.
- Perfect forward secrecy
- If you lose control of your private keys, no previous conversation
is compromised.
This package contains the program files for the OTR library.


Package Version Architecture Repository
libotr5-bin_4.1.0-2+deb8u1_i386.deb 4.1.0 i386 Debian Main
libotr5-bin - - -


Name Value
libc6 >= 2.14
libgcrypt20 >= 1.6.1
libotr5 >= 4.0.0


Name Value
libotr2-bin -


Name Value
libotr1-bin -
libotr2-bin -


Type URL
Binary Package libotr5-bin_4.1.0-2+deb8u1_amd64.deb
Source Package libotr

Install Howto

  1. Update the package index:
    # sudo apt-get update
  2. Install libotr5-bin deb package:
    # sudo apt-get install libotr5-bin




2016-03-07 - Salvatore Bonaccorso <>
libotr (4.1.0-2+deb8u1) jessie-security; urgency=high
* Non-maintainer upload by the Security Team.
* CVE-2016-2851: Integer overflow on 64-bit architectures when receiving 4GB
2014-11-01 - intrigeri <>
libotr (4.1.0-2) unstable; urgency=medium
* New patch:
Do not error out when an application is run against an older libotr
than the one it was built against: given libotr 4.1 is API- and
ABI-compatible with libotr 4.0, let's prevent this runtime check
from breaking packages that were built against 4.0 (Closes: #767230).
* Add symbols file: now that we have removed upstream's version check
at runtime, let's use the symbols mechanism to detect (most) ABI changes
automatically, and let reverse-dependencies pick up the version
of libotr they should depend on (Closes: #767652).
* debian/README.source: document how to detect and handle ABI changes.
2014-10-21 - intrigeri <>
libotr (4.1.0-1) unstable; urgency=medium
* New upstream release.
* Drop all patches: applied upstream.
* Migrate back to source format 3.0 (quilt), as per new team policy.
* Drop unsupported italics from extended description. (Closes: #747271)
* Import upstream signing key where uscan looks for it.
* debian/watch: enable OpenPGP signature verification.
* Declare compliance with Standards-Version 3.9.6 (no change required).
* Use cgit for the Vcs-Browser control field.
* Reformat debian/control with cme fix.
2014-02-18 - intrigeri <>
libotr (4.0.0-3) unstable; urgency=medium
* Put the package under the umbrella of the Debian OTR Team.
Huge thanks to Thibaut VARENE <> for having maintained
this package for many years!
* Add Micah and myself as human uploaders.
* Migrate back to source format 1.0. Accordingly integrate
debian/patches/message_fragment_fix.patch in the tree:
cherry-pick upstream commit d748757e.
* Convert debian/copyright to machine-readable copyright format 1.0,
update it.
* Cleanup debian/control with cme, including:
drop versioned dependencies satisfied in oldstable (Squeeze).
* Declare compatibility with standards version 3.9.5.
* Slightly improve long package descriptions, make it gender-neutral.
* Update Homepage control field.
* Convert to debhelper 8 with tiny rules file and dh-autoreconf.
* Create copyright symlinks with dh_link instead of the real links,
that are not supported with source format 1.0.
* Override direct-changes-in-diff-but-no-patch-system Lintian warning:
our team uses source format 1.0; the detail of patches can be found
in Git and debian/changelog.
* Enable all hardening flags.
* Add Vcs-* control fields.
* Update debian/watch to use the new HTTPS homepage.
* Add README.source.
2013-05-10 - Micah Anderson <>
libotr (4.0.0-2.2) unstable; urgency=low
* Non-maintainer upload
* Upload experimental version to unstable
* Bump standards version: no changes
2013-03-09 - Micah Anderson <>
libotr (4.0.0-2.1) experimental; urgency=low
* Non-maintainer upload.
* Add message_fragment_fix.patch (Closes: #698746)
2012-10-06 - Thibaut VARENE <>
libotr (4.0.0-2) unstable; urgency=low
* Remove Conflicts with libotr2 (Closes: #689667)
2012-09-29 - Thibaut VARENE <>
libotr (4.0.0-1) unstable; urgency=low
* New upstream release, upload to unstable
2012-08-28 - Thibaut VARENE <>
libotr (4.0.0~rc3-1) experimental; urgency=low
* New upstream pre-release
2012-08-24 - Thibaut VARENE <>
libotr (4.0.0~rc1-1) experimental; urgency=low
* New upstream pre-release (Closes: #685664)

See Also

Package Description
libotr5-dev_4.1.0-2+deb8u1_amd64.deb Off-the-Record Messaging library development files
libotr5_4.1.0-2+deb8u1_amd64.deb Off-the-Record Messaging library
libots-dev_0.5.0-2.1_amd64.deb Open Text Summarizer (development)
libots0_0.5.0-2.1_amd64.deb Open Text Summarizer (library)
libouch-perl_0.0408-1_all.deb exception handling module
libounit-ocaml-dev_2.0.0-1_amd64.deb Unit testing framework for OCaml
libow-2.9-8_2.9p8-6_amd64.deb 1-Wire File System full library
libow-dev_2.9p8-6_amd64.deb 1-Wire File System (development files)
libow-perl_2.9p8-6_amd64.deb Dallas 1-wire support: Perl5 bindings
libow-php5_2.9p8-6_amd64.deb Dallas 1-wire support: PHP5 bindings
libow-tcl_2.9p8-6_amd64.deb Dallas 1-wire support: Tcl bindings
libow-util-ant-tasks-java-doc_1.3.2-4_all.deb ObjectWeb utility Ant tasks library (API docs)
libow-util-ant-tasks-java_1.3.2-4_all.deb ObjectWeb utility Ant tasks library
libowasp-antisamy-java-doc_1.5.3+dfsg-1_all.deb Documentation for OWASP AntiSamy
libowasp-antisamy-java_1.5.3+dfsg-1_all.deb OWASP AntiSamy