Difference between revisions of "OTR"
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== Client support == | == Client support == | ||
=== Native === | === Native === | ||
* [ | * [https://adium.im/ Adium] (Mac OS X) | ||
* [ | * [https://bitlbee.org/ BitlBee] (Cross-platform) | ||
* [http://icanblink.com/ Blink Cocoa](Cross-platform) | * [http://icanblink.com/ Blink Cocoa](Cross-platform) | ||
* [http://centerim.org/ CenterIM] (Unix-like) | * [http://centerim.org/ CenterIM] (Unix-like) | ||
* [http://climm.org/ climm] (Unix-like) | * [http://climm.org/ climm] - dead (Unix-like) | ||
* [https:// | * [https://chatsecure.org/ ChatSecure (formerly Gibberbot)] (iPhone) | ||
* [ | * [https://jitsi.org/ Jitsi (formerly SIP Communicator)] (Cross-platform) | ||
* [ | * [https://mcabber.com/ MCabber] (Unix-like) | ||
* [ | * [https://www.firestormviewer.org/ Phoenix Viewer], a Second Life client (Cross-platform) | ||
* [http://www.profanity.im/ Profanity]: [ | * [http://www.profanity.im/ Profanity]: [https://www.profanity.im/otr.html OTR page] | ||
* [ | * [https://psi-im.org/ Psi]/[https://psi-plus.com/ Psi+] (Cross-platform) | ||
* [ | * [https://www.xabber.org/ Xabber] (Android) | ||
* [ | * [https://yaxim.org/ yaxim] (Android) | ||
* [https://zom.im/ Zom] (Android, iPhone) | |||
=== Plugin === | === Plugin === | ||
* [ | * [https://gajim.org/ Gajim] (Cross-platform) with [https://dev.gajim.org/gajim/gajim-plugins/wikis/OffTheRecordPlugin Off-The-Record Encryption for Gajim] | ||
* [ | * [https://irssi.org/ irssi] (Cross-platform) with [https://github.com/cryptodotis/irssi-otr/ irssi-otr] | ||
* [ | * [https://userbase.kde.org/Kopete/ Kopete] (Unix-like) with [http://kopete-otr.follefuder.org/ Kopete Off-the-Record plugin] | ||
* [http://miranda-im.org/ Miranda IM] (Microsoft Windows) with [https://code.google.com/p/mirotr/ MirOTR - OTR for Miranda IM] | * [http://miranda-im.org/ Miranda IM] (Microsoft Windows) with [https://code.google.com/p/mirotr/ MirOTR - OTR for Miranda IM] | ||
* [ | * [https://www.miranda-ng.org/ Miranda NG] (Microsoft Windows) with [http://wiki.miranda-ng.org/index.php?title=Plugin:MirOTR MirOTR - OTR for Miranda NG] | ||
* [ | * [https://pidgin.im/ Pidgin (formely Gaim)] (Cross-platform) with [https://otr.cypherpunks.ca/#downloads OTR plugin for Pidgin] | ||
* [ | * [https://poez.io/ Poezio] with [https://doc.poez.io/plugins/otr.html pure-python-otr] | ||
* [ | * [https://salut-a-toi.org/ Salut à Toi] with plugin_sec_otr.py (installed by default) | ||
* [ | * [https://www.trillian.im/ Trillian] (Microsoft Windows) with [http://trillianotr.kittyfox.net/ Trillian OTR] | ||
* [ | * [https://weechat.org/ WeeChat] (Cross-platform) with [https://github.com/mmb/weechat-otr/ weechat-otr] | ||
* [http://xchat.org/ XChat] (Cross-platform) with [ | * [http://xchat.org/ XChat] (Cross-platform) with [https://github.com/J0s3f/xchat-otr/ xchat-otr] | ||
== External links == | == External links == | ||
| Line 53: | Line 51: | ||
* [https://www.otr.im/ OTR.im - Whispering Off The Record] | * [https://www.otr.im/ OTR.im - Whispering Off The Record] | ||
* [https://otr.cypherpunks.ca/software.php OTR-Enabled Software] | * [https://otr.cypherpunks.ca/software.php OTR-Enabled Software] | ||
* [https://github.com/otrv4/otrv4 OTRv4 draft] | |||
* [https://otr.cypherpunks.ca/Protocol-v3-4.0.0.html Off-the-Record Messaging Protocol version 3] | * [https://otr.cypherpunks.ca/Protocol-v3-4.0.0.html Off-the-Record Messaging Protocol version 3] | ||
* [https://otr.cypherpunks.ca/Protocol-v2-3.1.0.html Off-the-Record Messaging Protocol version 2] | * [https://otr.cypherpunks.ca/Protocol-v2-3.1.0.html Off-the-Record Messaging Protocol version 2] | ||
Revision as of 11:40, 5 January 2019
| OTR has widely been replaced by OMEMO in the XMPP network and is recommended to be used instead. |
Off-the-Record Messaging, commonly referred to as OTR, is a cryptographic protocol that provides strong encryption for instant messaging conversations. OTR uses a combination of the AES symmetric-key algorithm, the Diffie–Hellman key exchange, and the SHA-1 hash function. In addition to authentication and encryption, OTR provides perfect forward secrecy and malleable encryption.
Strengths
OTR allows you to have private conversations over instant messaging 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 he sees are authentic and unmodified.
- Perfect forward secrecy
- If you lose control of your private keys, no previous conversation is compromised.
Client support
Native
- Adium (Mac OS X)
- BitlBee (Cross-platform)
- Blink Cocoa(Cross-platform)
- CenterIM (Unix-like)
- climm - dead (Unix-like)
- ChatSecure (formerly Gibberbot) (iPhone)
- Jitsi (formerly SIP Communicator) (Cross-platform)
- MCabber (Unix-like)
- Phoenix Viewer, a Second Life client (Cross-platform)
- Profanity: OTR page
- Psi/Psi+ (Cross-platform)
- Xabber (Android)
- yaxim (Android)
- Zom (Android, iPhone)
Plugin
- Gajim (Cross-platform) with Off-The-Record Encryption for Gajim
- irssi (Cross-platform) with irssi-otr
- Kopete (Unix-like) with Kopete Off-the-Record plugin
- Miranda IM (Microsoft Windows) with MirOTR - OTR for Miranda IM
- Miranda NG (Microsoft Windows) with MirOTR - OTR for Miranda NG
- Pidgin (formely Gaim) (Cross-platform) with OTR plugin for Pidgin
- Poezio with pure-python-otr
- Salut à Toi with plugin_sec_otr.py (installed by default)
- Trillian (Microsoft Windows) with Trillian OTR
- WeeChat (Cross-platform) with weechat-otr
- XChat (Cross-platform) with xchat-otr