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ZRTP (composed of Z and Real-time Transport Protocol) is a cryptographic key-agreement protocol to negotiate the keys for encryption between two end points in a Voice over IP (VoIP) phone telephony call based on the Real-time Transport Protocol. It uses Diffie–Hellman key exchange and the Secure Real-time Transport Protocol (SRTP) for encryption. ZRTP was developed by Phil Zimmermann, with help from Bryce Wilcox-O'Hearn, Colin Plumb, Jon Callas and Alan Johnston and was submitted to the Internet Engineering Task Force (IETF) by Zimmermann, Callas and Johnston on March 5, 2006 and published on April 11, 2011 as RFC 6189.
ZRTP (composed of Z and Real-time Transport Protocol) is a cryptographic key-agreement protocol to negotiate the keys for encryption between two end points...
world. He is also known for his work in VoIP encryption protocols, notably ZRTP and Zfone. Zimmermann is co-founder and Chief Scientist of the global encrypted...
has been developed based on Philip Zimmermann's VoIP encryption standard ZRTP. As the popularity of VoIP grows, secure telephony is becoming more widely...
macOS, and mobile phones running Windows Phone, iOS or Android. It supports ZRTP for end-to-end encrypted voice and video communication. Linphone is licensed...
software for secure voice communication over the Internet (VoIP), using the ZRTP protocol. It is created by Phil Zimmermann, the creator of the PGP encryption...
zfoneproject.com. Zfone. 2006. Retrieved 26 August 2016. "Why do we need ZRTP if we already have SRTP? Isn't SRTP good enough?". zfoneproject.com. Zfone...
the Mnet open source project, and is currently used in Phil Zimmermann's ZRTP protocol, and in the Tahoe-LAFS open source project. Another alternative...
OS X, Windows GPL Jitsi, a Java VoIP and Instant Messaging client with ZRTP encryption, for FreeBSD, Linux, OS X, Windows; LGPL Linphone, with a core/UI...
Fifth Element An opensource implementation of secure telephony protocol ZRTP An alien race in the games Strange Adventures in Infinite Space and Weird...
polished user interface, supporting encrypted calls using SRTP/SDES and ZRTP, Google Voice integration, and the G.729 Annex A audio codec. In 2009 Acrobits...
Point Protocol Secure Shell (SSH) Signal Protocol Transport Layer Security ZRTP List of cryptosystems Secure channel Security Protocols Open Repository Comparison...
encrypting GSM and VoIP, which are natively digital, the standard protocol ZRTP could be used as an end-to-end encryption technology. Secure voice's robustness...
can be attached to a URL Short Authentication String, a method used in the ZRTP cryptographic protocol Slot Accounting System protocol, a slot machine communication...
private network technologies to offer a method for delivering secure voice. ZRTP – a cryptographic key-agreement protocol used in Voice over Internet Protocol...
include HTTPS for web traffic, PGP for email, OTR for instant messaging, ZRTP for telephony, and TETRA for radio. Typical server-based communications systems...
are available in the Secure Real-time Transport Protocol (SRTP) and the ZRTP protocol for analog telephony adapters, as well as for some softphones. IPsec...
and embedded communication appliances. It also has support for encryption, ZRTP, DTLS. Projects such as BigBlueButton is built on top of FreeSWITCH and FusionPBX...
Ten years later, Zimmermann released the successor to PGPfone, Zfone and ZRTP, a newer and secure VoIP protocol based on modern VoIP standards. Zfone builds...
Auto answer and auto forward Call recording Call encryption with SRTP and ZRTP Conference calls Direct media connection establishment with the ICE protocol...
SRTP. The key exchange for SRTP is performed with SDES (RFC 4568), or with ZRTP (RFC 6189). When SDES is used, the keys will be transmitted via insecure...
mechanism. Such apps usually communicate over secure Internet pathways (e.g. ZRTP) instead of through phone voice data networks. Following the Snowden disclosures...
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