Silent Circle Instant Messaging Protocol

Encryption scheme that was developed by Silent Circle

"SCIMP" redirects here. For the protein, see SCIMP protein.

The Silent Circle Instant Message Protocol (SCIMP) was an encryption scheme that was developed by Vincent Moscaritolo of Silent Circle. It enabled private conversation over instant message transports such as XMPP (Jabber).[1][citation needed]

SCIMP provided encryption, perfect forward secrecy and message authentication.[2] It also handled negotiating the shared secret keys.

## History

[edit]

Silent Circle used SCIMP in their encrypted instant messaging application called Silent Text. Silent Text was discontinued on September 28, 2015, when its features were merged into Silent Circle's encrypted voice calling application called Silent Phone.[3] At the same time, Silent Circle transitioned to using a protocol that uses the Double Ratchet Algorithm instead of SCIMP.[3][4]

## See also

[edit]

* Signal Protocol

## References

[edit]

1. ^ "Silent Circle's SCIMP page". Archived from the original on 4 September 2015. Retrieved 13 December 2015.
2. ^ Moscaritolo, Vinnie; Belvin, Gary; Zimmermann, Phil (5 December 2012). "Silent Circle Instant Messaging Protocol Protocol Specification" (PDF). Silent Circle. Archived from the original (PDF) on 2 April 2015. Retrieved 31 October 2013.
3. ^ a b "What is Silent Phone?". Support.silentcircle.com. Silent Circle. 17 September 2015. Archived from the original on 4 March 2016. Retrieved 8 March 2016.
4. ^ Armasu, Lucian (3 November 2015). "TextSecure, RedPhone Private Communications Apps Now Combined Into 'Signal' App". Tom's Hardware. Purch Group, Inc. Retrieved 8 March 2016.

* v
* t
* e

Instant messaging

Protocols
(comparison)|

| Open|

* DDP
* IMPP
* IRC
* Matrix
* MTProto
* Retroshare
* Signal Protocol
* SIP
* MSRP
* SIMPLE
* Tox
* XMPP
* Jingle
* WFP
* Zephyr

|

Closed|

* MSNP
* OSCAR
* TOC
* Skype

Services|

* Band
* BBM Enterprise
* Beeper
* BiP
* DingTalk
* Discord
* Element
* Google Chat
* Google Meet
* Google Messages
* GroupMe
* Guilded
* HipChat
* iGap
* iMessage
* Imo
* IRC Networks
* Jongla
* KakaoTalk
* Kik
* Lark
* Libon
* Line
* Marco Polo
* Mattermost
* Facebook Messenger
* The Palace
* Palringo
* Session
* Signal
* Skype
* Slack
* Snapchat
* Snow
* Tango
* Telegram
* QQ
* Textfree/Pinger
* Threema
* Tox
* Trillian
* Viber
* VK Messenger
* WeChat
* WhatsApp
* Wickr
* Windows Messenger service
* Zoom
* Zulip

Clients
(comparison)|

| Single protocol|

* Baidu Hi
* BBM Enterprise
* Briar
* Element
* FaceTime
* Gadu-Gadu
* GroupMe
* HCL Sametime
* IMVU
* Jami
* Jongla
* Linphone
* Facebook Messenger
* Palringo
* Retroshare
* Ricochet
* Session
* Signal
* Skype
* Telegram
* QQ
* Tox
* WeChat
* WhatsApp
* Wickr
* Wire

|

Multi-protocol|

* Adium
* Ayttm
* Beeper
* BitlBee
* Centericq
* eBuddy
* Jitsi
* Kopete
* Messages
* Miranda NG
* Nimbuzz
* Pidgin
* Finch
* QIP 2010
* Skype for Business
* Telepathy
* Thunderbird
* Trillian

XMPP (Jabber)|

* ChatSecure
* Conversations
* Gajim
* Psi
* Spark
* Tkabber
* Xabber

MSNP|

* Microsoft Teams
* Skype

Defunct|

* List of defunct instant messaging platforms

See also|

* Backchannel
* Chat log
* Chatbot
* Circuit
* Comparison of user features of messaging platforms
* Contact list
* Emoticon
* File sharing
* FirstClass
* Flock
* Fuze Box
* Hall.com
* LAN messenger
* Presence information
* RingCentral Glip
* SMS language
* Status message
* U-Report
* Videotelephony
* Voice over IP
* Web chat
* Webcam
* Yammer

This cryptography-related article is a stub. You can help Wikipedia by expanding it.

|

* v
* t
* e

*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template