Zfone
E544015
Zfone is a software application that provides end-to-end encrypted voice communication over IP networks using the ZRTP protocol.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Zfone canonical | 1 |
| Zfone Project | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5768326 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Zfone Context triple: [ZRTP, usedBy, Zfone]
-
A.
Anytos
Anytos is a figure from Greek mythology known primarily as a Titan or divine guardian associated with the Arcadian goddess Despoina.
-
B.
Boingo
Boingo is the 1994 self-titled studio album by American new wave band Oingo Boingo, marking a stylistic shift toward a more alternative rock sound.
-
C.
Founex
Founex is a small Swiss municipality on Lake Geneva in the canton of Vaud, known for its residential character and proximity to Geneva.
-
D.
Fitel
Fitel was a financial technology startup where Jeff Bezos worked early in his career, before joining D. E. Shaw and later founding Amazon.
-
E.
Boxtel
Boxtel is a town and municipality in the southern Netherlands known for its historic center and location between the cities of Eindhoven and ’s-Hertogenbosch.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Zfone Target entity description: Zfone is a software application that provides end-to-end encrypted voice communication over IP networks using the ZRTP protocol.
-
A.
Anytos
Anytos is a figure from Greek mythology known primarily as a Titan or divine guardian associated with the Arcadian goddess Despoina.
-
B.
Boingo
Boingo is the 1994 self-titled studio album by American new wave band Oingo Boingo, marking a stylistic shift toward a more alternative rock sound.
-
C.
Founex
Founex is a small Swiss municipality on Lake Geneva in the canton of Vaud, known for its residential character and proximity to Geneva.
-
D.
Fitel
Fitel was a financial technology startup where Jeff Bezos worked early in his career, before joining D. E. Shaw and later founding Amazon.
-
E.
Boxtel
Boxtel is a town and municipality in the southern Netherlands known for its historic center and location between the cities of Eindhoven and ’s-Hertogenbosch.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
VoIP security software
ⓘ
encryption software ⓘ software application ⓘ |
| category |
Internet privacy software
ⓘ
VoIP encryption ⓘ cryptographic software ⓘ |
| communicationType | voice ⓘ |
| designedBy | Phil Zimmermann ⓘ |
| developer |
Phil Zimmermann
ⓘ
Zfone Project ⓘ
linked to:
Zfone
|
| doesNotRequire |
central key server
ⓘ
certificate authority ⓘ |
| encryptionScope | media only, not signaling ⓘ |
| encryptionType | SRTP ⓘ |
| feature |
key continuity
ⓘ
no dependence on PKI ⓘ no dependence on SIP signaling security ⓘ peer-to-peer key negotiation ⓘ short authentication string verification ⓘ |
| implements | media path key agreement ⓘ |
| influenced | ZRTP adoption in other VoIP clients ⓘ |
| license | proprietary software license ⓘ |
| networkModel | end-to-end ⓘ |
| operatesOn | IP networks ⓘ |
| primaryFunction | secure VoIP calls ⓘ |
| protects | RTP media streams ⓘ |
| protocolLayer | media layer ⓘ |
| provides | end-to-end encrypted voice communication ⓘ |
| relatedTo |
PGPfone
ⓘ
Silent Phone ⓘ ZRTP ⓘ |
| runsOn |
Linux
ⓘ
Microsoft Windows ⓘ
linked to:
Windows
macOS ⓘ |
| securityGoal |
confidentiality of VoIP calls
ⓘ
man-in-the-middle attack resistance ⓘ protection against eavesdropping ⓘ |
| status | discontinued ⓘ |
| supports | Voice over IP ⓘ |
| transportIndependence | signaling-protocol agnostic ⓘ |
| userInteraction | verbal SAS comparison between callers ⓘ |
| uses |
Diffie–Hellman key exchange
ⓘ
hash commitment ⓘ |
| usesProtocol | ZRTP ⓘ |
| worksWith | existing VoIP clients ⓘ |
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: Zfone Description of subject: Zfone is a software application that provides end-to-end encrypted voice communication over IP networks using the ZRTP protocol.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.