ZRTP

E127265
VoIP security protocol cryptographic key-agreement protocol key exchange protocol

ZRTP is a cryptographic key-agreement protocol designed to enable end-to-end encryption for real-time voice and video communications over RTP-based systems.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (2)

Label Occurrences
ZRTP canonical 2
Zimmermann Real-time Transport Protocol 1

Statements (49)

Predicate Object
instanceOf VoIP security protocol ⓘ
cryptographic key-agreement protocol ⓘ
key exchange protocol ⓘ
basedOn Diffie–Hellman key exchange ⓘ
designedBy Alan Johnston ⓘ
Jon Callas ⓘ
Phil Zimmermann ⓘ
doesNotRequire PKI ⓘ
pre-shared keys ⓘ
feature SAS verbal comparison ⓘ
cache of retained secrets ⓘ
opportunistic encryption ⓘ
fullName ZRTP self-linksurface differs ⓘ
surface form: Zimmermann Real-time Transport Protocol
negotiates SRTP master keys ⓘ
SRTP salt keys ⓘ
operatesOver RTP ⓘ
SRTP for secure media transport ⓘ
surface form: SRTP
primaryUse VoIP ⓘ
multimedia sessions ⓘ
provides key agreement ⓘ
man-in-the-middle attack detection ⓘ
media path keying ⓘ
perfect forward secrecy ⓘ
publicationYear 2011 ⓘ
specifiedIn RFC 6189 ⓘ
standardizedBy Internet Engineering Task Force ⓘ
surface form: IETF
supports end-to-end encryption ⓘ
real-time communication ⓘ
video communication ⓘ
voice communication ⓘ
supportsCipher Advanced Encryption Standard ⓘ
surface form: AES

Salsa20 ⓘ
Twofish ⓘ
supportsDHGroup 3072-bit MODP ⓘ
4096-bit MODP ⓘ
P-256 ⓘ
P-384 ⓘ
P-521 ⓘ
supportsHash SHA-256 ⓘ
SHA-384 ⓘ
SHA-512 ⓘ
usedBy Jitsi ⓘ
Linphone ⓘ
Twinkle ⓘ
Zfone ⓘ
uses Short Authentication String ⓘ
ephemeral Diffie–Hellman keys ⓘ
hash commitment ⓘ
key continuity ⓘ

How these facts were elicited

The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.

Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10.

# Requirements
- If you don't know the subject at all, return an empty list.
- If the subject is not a named entity, return an empty list.
- Include at least one triple where predicate is "instanceOf".
- Do not get too wordy.
- Separate several objects into multiple triples with one object.
Input
Subject: ZRTP
Description of subject: ZRTP is a cryptographic key-agreement protocol designed to enable end-to-end encryption for real-time voice and video communications over RTP-based systems.

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

SRTP for secure media transport → commonlyUsedWith → ZRTP ⓘ
subject surface form: Secure Real-time Transport Protocol
ZRTP → fullName → ZRTP self-linksurface differs ⓘ
this entity surface form: Zimmermann Real-time Transport Protocol
DTLS-SRTP → relatedTo → ZRTP ⓘ