brew

libotr mit Homebrew, apk, dnf, MacPorts, Nix, pacman, apt, zypper installieren

Prüfe Installationswege, Executables, Metadaten und Sicherheitshinweise für libotr in AI-Agent-Workflows.

Installationsbefehl Sicherheitshinweise

Installation

Weitere Installationsbefehle

macOS

Homebrewverifiziert · 100%

brew install libotr

local Homebrew formula metadata

MacPortsverifiziert · 94%

sudo port install libotr

MacPorts ports tree · security/libotr/Portfile · Quelle: api.github.com

Linux

Alpine Linux apkverifiziert · 92%

sudo apk add libotr

Alpine Linux edge package indexes · libotr · Quelle: dl-cdn.alpinelinux.org

Fedora dnfverifiziert · 92%

sudo dnf install libotr

Fedora Rawhide package metadata · libotr · Quelle: dl.fedoraproject.org

Nixverifiziert · 92%

nix profile install nixpkgs#libotr

nixpkgs package indexes · pkgs/by-name/li/libotr/package.nix · Quelle: api.github.com

Arch Linux pacmanverifiziert · 92%

sudo pacman -S libotr

Arch Linux sync databases · libotr · Quelle: geo.mirror.pkgbuild.com

Debian aptverifiziert · 92%

sudo apt install libotr5-bin

Debian stable package indexes · libotr5-bin · Quelle: deb.debian.org

openSUSE zypperverifiziert · 92%

sudo zypper install libotr-devel

openSUSE Tumbleweed package metadata · libotr-devel · Quelle: download.opensuse.org

Überblick

Paketzusammenfassung

Off-The-Record (OTR) messaging library

Projektlinks

Befehle und Aliase

otr_mackey
otr_modify
otr_parse
otr_readforge
otr_remac
otr_sesskeys

Verlauf

Projektgeschichte und Nutzung

libotr is the portable C library and toolkit for Off-the-Record Messaging, a protocol for private instant-messaging conversations with encryption, authentication during the conversation, deniability after the fact, and perfect forward secrecy.

Projektgeschichte

OTR came from academic and cypherpunk work on making instant messaging behave more like an off-the-record conversation than signed email. The official OTR site links the library, the Pidgin plugin, protocol descriptions, and the original research papers as one software-and-protocol family.

libotr served as the reference C implementation for client developers. The project paired the LGPL library with GPL toolkit programs and with pidgin-otr, making it practical for multiprotocol IM clients to add OTR without each client reimplementing the cryptographic state machine.

Adoptionsgeschichte

OTR became especially associated with desktop XMPP and multiprotocol IM clients. XMPP Extension Protocol 0364 described OTR as the de facto standard for end-to-end encryption in XMPP, while the OTR site maintained user-facing downloads for pidgin-otr, source repositories, protocol documents, and implementation lists.

Wie es verwendet wird

Applications link libotr to negotiate OTR sessions, run the authenticated key exchange, encrypt and authenticate data messages, and expose higher-level verification flows such as the Socialist Millionaires' Protocol. The Homebrew package also installs toolkit programs for inspecting, modifying, and testing OTR message artifacts.

Warum Paket-Nerds sich dafür interessieren

libotr matters because it is a small library package carrying a big protocol story: it let package managers deliver interoperable deniable encryption to chat clients before modern app-specific encrypted messengers became dominant. Its 2016 security release also shows why distro maintainers cared about keeping even niche crypto libraries patched.

Zeitleiste

2004: The OTR design was published in the WPES paper linked from the official OTR documentation.
2012: libotr 4.0.0 and pidgin-otr 4.0.0 were released.
2014: libotr 4.1.0 was released with build-system, secure-memory, constant-time comparison, and API changes.
2016: libotr 4.1.1 fixed CVE-2016-2851 and tightened protocol parsing.

Related projects

pidgin-otr is the best-known client plugin distributed alongside libotr by the OTR project.
The OTR protocol documents define the wire protocol that libotr implements.
XMPP clients and multiprotocol IM clients were the main ecosystem where libotr was reused.

Quellen

Sicherheitslage

Risikostufe: grün

library-like package without higher-risk signals.

Risikoklassifikator

grün Risiko · niedrig Konfidenz · appliance

Warum

library-like package without higher-risk signals

Signale

metadata:library-like

Installationsverhalten

In den Formelmetadaten ist kein Homebrew-Post-install-Hook erfasst.
Homebrew-Bottle-Metadaten sind für 13 Plattformziele verfügbar.
Installiert mit 2 Laufzeitabhängigkeiten.

Empfohlene Prüfung

Prüfe vor unbeaufsichtigter Agent-Nutzung, ob das Tool Klartext-Credentials liest, Remote-Zustand schreibt, Artefakte veröffentlicht oder Plugins ausführt.

Executables

Installierte Executables

Befehl	Art	Sichtbarkeit
`otr_mackey`	cli	globales Executable
`otr_modify`	cli	globales Executable
`otr_parse`	cli	globales Executable
`otr_readforge`	cli	globales Executable
`otr_remac`	cli	globales Executable
`otr_sesskeys`	cli	globales Executable

Aktualität

Version und Aktualität

Diese Signale trennen das Alter der Seitengenerierung, Aktivität des Paketmanagers und Upstream-Release-Vergleich. Versionsrückstand wird nur gemeldet, wenn eine Evidenz-URL und vergleichbare Versionen vorhanden sind.

Seite generiert2026-07-10

Manager-Version4.1.1

Manager aktualisiert2026-06-19

lokale DatenOK

Upstreamnot checked

neueste erkannte Versionnicht erkannt

https://otr.cypherpunks.ca/

InfoRelease/tag comparison is only available for GitHub repositories.https://otr.cypherpunks.ca/none Konfidenz

Installationsmetadaten

Paketmetadaten

Paketschlüssel	brew:libotr
Version	4.1.1
Paketmanager	Homebrew
Paketmanager-Seite	https://formulae.brew.sh/formula/libotr
Homepage	https://otr.cypherpunks.ca/
Repository	https://bugs.otr.im/git/libotr.git
Upstream-Dokumentation	https://otr.cypherpunks.ca/
Lizenz	LGPL-2.1-only AND GPL-2.0-only
Quellarchiv	https://otr.cypherpunks.ca/libotr-4.1.1.tar.gz
Zuletzt aktualisiert	2026-06-19T12:32:38-07:00
Pulse	updated
Abhängigkeiten	libgcrypt, libgpg-error
Bottle	verfügbar (auf arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux)
Homebrew post-install	nicht definiert
Dienst	keiner deklariert

Registry-Fakten

Details aus der Quelldatenbank

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	libotr
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

Source-Datenbank-Treffer

Andere Paketmanager-Einträge

Treffer stammen aus externen Paketmanager-Indizes und bleiben von lokalen Automic-Vault-Paketlinks getrennt.

Debian apt95%

libotr5-bin 4.1.1-6

toolkit for Off-the-Record Messaging library

https://otr.cypherpunks.ca/

sudo apt install libotr5-bin

Section: misc
Architecture: amd64
Source Package: libotr
3 Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Debian stable package indexes · deb.debian.org · Debian stable package indexes: libotr5-bin from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Debian apt95%

libotr5-dev 4.1.1-6

Off-the-Record Messaging library development files

https://otr.cypherpunks.ca/

sudo apt install libotr5-dev

Section: libdevel
Architecture: amd64
Source Package: libotr
2 Abhängigkeiten
1 optionale Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Debian stable package indexes · deb.debian.org · Debian stable package indexes: libotr5-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Debian apt95%

libotr5t64 4.1.1-6

Off-the-Record Messaging library

https://otr.cypherpunks.ca/

sudo apt install libotr5t64

Section: libs
Architecture: amd64
Source Package: libotr
2 Abhängigkeiten
1 stellt bereit
1 optionale Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Debian stable package indexes · deb.debian.org · Debian stable package indexes: libotr5t64 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

Nix95%

libotr

nix profile install nixpkgs#libotr

normalized package name match
Abgeglichen nach: Libotr

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/li/libotr/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

Ubuntu apt95%

libotr5-bin 4.1.1-5.1build1

toolkit for Off-the-Record Messaging library

https://otr.cypherpunks.ca/

sudo apt install libotr5-bin

Section: universe/misc
Architecture: amd64
Source Package: libotr
3 Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libotr5-bin from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

Ubuntu apt95%

libotr5-dev 4.1.1-5.1build1

Off-the-Record Messaging library development files

https://otr.cypherpunks.ca/

sudo apt install libotr5-dev

Section: universe/libdevel
Architecture: amd64
Source Package: libotr
2 Abhängigkeiten
1 optionale Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libotr5-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

Ubuntu apt95%

libotr5t64 4.1.1-5.1build1

Off-the-Record Messaging library

https://otr.cypherpunks.ca/

sudo apt install libotr5t64

Section: universe/libs
Architecture: amd64
Source Package: libotr
2 Abhängigkeiten
1 stellt bereit
1 optionale Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libotr5t64 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz

apk95%

libotr 4.1.1-r5

Off The Record Messaging, an encryption library for secure IM conversations

http://otr.cypherpunks.ca/

sudo apk add libotr

License: LGPL-2.1-only
Architecture: x86_64
Source Package: libotr
1 Abhängigkeiten
1 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libotr from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz

apk95%

libotr-dev 4.1.1-r5

Off The Record Messaging, an encryption library for secure IM conversations (development files)

http://otr.cypherpunks.ca/

sudo apk add libotr-dev

License: LGPL-2.1-only
Architecture: x86_64
Source Package: libotr
1 Abhängigkeiten
1 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libotr-dev from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz

apk95%

libotr-doc 4.1.1-r5

Off The Record Messaging, an encryption library for secure IM conversations (documentation)

http://otr.cypherpunks.ca/

sudo apk add libotr-doc

License: LGPL-2.1-only
Architecture: x86_64
Source Package: libotr
normalized package name match
Abgeglichen nach: Libotr

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libotr-doc from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz

apk95%

libotr-tools 4.1.1-r5

libotr tools

http://otr.cypherpunks.ca/

sudo apk add libotr-tools

License: LGPL-2.1-only
Architecture: x86_64
Source Package: libotr
1 Abhängigkeiten
1 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libotr-tools from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz

dnf95%

libotr 4.1.1-25.fc44

Off-The-Record Messaging library and toolkit

http://otr.cypherpunks.ca/

sudo dnf install libotr

License: GPL-2.0-only AND LicenseRef-Callaway-LGPLv2
Category: Unspecified
Architecture: i686
Source Package: libotr
6 Abhängigkeiten
3 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: libotr from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

dnf95%

libotr-devel 4.1.1-25.fc44

Development library and include files for libotr

http://otr.cypherpunks.ca/

sudo dnf install libotr-devel

License: GPL-2.0-only AND LicenseRef-Callaway-LGPLv2
Category: Unspecified
Architecture: i686
Source Package: libotr
4 Abhängigkeiten
2 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: libotr-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

pacman95%

libotr 4.1.1-6

Off-the-Record Messaging Library and Toolkit

https://otr.cypherpunks.ca/

sudo pacman -S libotr

License: GPL-2.0-only AND LGPL-2.1-only
Architecture: x86_64
2 Abhängigkeiten
normalized package name match
Abgeglichen nach: Libotr

Arch Linux sync databases · geo.mirror.pkgbuild.com · Arch Linux sync databases: libotr from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz

zypper95%

libotr-devel 4.1.1-4.12

Include files and development libraries

https://www.cypherpunks.ca/otr/

sudo zypper install libotr-devel

License: GPL-2.0-only AND LGPL-2.1-only
Category: Development/Libraries/C and C++
Architecture: x86_64
Source Package: libotr
3 Abhängigkeiten
2 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: libotr-devel from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst

zypper95%

libotr-tools 4.1.1-4.12

"Off The Record" messaging library toolkit

https://www.cypherpunks.ca/otr/

sudo zypper install libotr-tools

License: GPL-2.0-only
Category: Development/Libraries/C and C++
Architecture: x86_64
Source Package: libotr
3 Abhängigkeiten
1 stellt bereit
normalized package name match
Abgeglichen nach: Libotr

openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: libotr-tools from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst

Quellspur

Aus Repository-Daten generiert

Diese Seite wird von av-web aus dem privaten Paket-SQLite-Artefakt bereitgestellt, das scripts/generate-pkg-sqlite.py erstellt.

Combined YAML source

View the package source record on GitHub.

combined/libotr.yml

Verwendete Quellen

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

libotr mit Homebrew, apk, dnf, MacPorts, Nix, pacman, apt, zypper installieren

Weitere Installationsbefehle

macOS

Linux

Paketzusammenfassung

Projektlinks

Befehle und Aliase

Projektgeschichte und Nutzung

Projektgeschichte

Adoptionsgeschichte

Wie es verwendet wird

Warum Paket-Nerds sich dafür interessieren

Zeitleiste

Related projects

Quellen

Risikostufe: grün

Risikoklassifikator

Warum

Signale

Installationsverhalten

Empfohlene Prüfung

Installierte Executables

Version und Aktualität

Paketmetadaten

Details aus der Quelldatenbank

Andere Paketmanager-Einträge

Interne Paketlinks

Themen-Hubs

Verwandte Tools

Gleicher Workflow

Agent-Sicherheitsleitfäden

Aus Repository-Daten generiert

Combined YAML source

Verwendete Quellen