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Secure phone for Vigor2820Vn-ZRTP DrayTek Corp 2010
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Secure phone for Vigor2820Vn-ZRTP
DrayTek Corp2010
Outline
Vigor2820 WEB UI
Why DrayTek’s secure phone
Demo
33
44
55
Motivation for secure phone11
22 Terminology
Q & A66
MotivationMotivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
WireShark
• Easy to eavesdrop conventional VOIP phone call (Wireshark)
•High demand for secure VOIP phone call (Business)
Wireshark
TerminlogyMotivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
•ZRTP
Zimmermann RTP
Key Exchange Protocol (Diffie-Hellman key exchange)
In the end:
(1) generates a shared secret
(2) generates SAS (short authentication string) for detecting
man in the middle attack
•SRTP
Secure RTP
Use the shared secret to encrypt/decrypt RTP
Motivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
Terminlogy (cont.)
SIP
RTP
Stage 1:
Stage 2:
SIP
ZRTP
Stage 1:
Stage 2:
SRTPStage 3:
Ordinary VOIP call:
Secure VOIP call:
Motivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
Terminlogy (cont.)
SIP
ZRTP
Stage 1:
Stage 2:
SRTPStage 3:
Secure VOIP call:
Zfone
+softphone
Motivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
Why DrayTek’s Secure Phone
Key exchange method is not standardized => incompatible between different brands.
•ZRTP: draft to specify it, and it's up to draft 14 already, will become RFC soon.
•Implies: zrtp + srtp will be the standard protocols for secure phone.
• DrayTek should be the first company in the world that supports ZRTP+SRTP secure phone feature (i.e. zfone compatible).
Motivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
Vigor2820 WEB UI
Demo-VideoMotivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
Vigor2820VnVigor2820Vn
Symmetric Phone
FX-S FX-S
zFone
eavesdropper
ZRTP/SRTP Application Diagram
Demo-VideoMotivation for secure phone
TerminlogyCurrent release
Future plan
DemoVigor2820
WEB UI Demo
Why DrayTek’s Secure Phone
Secure Phone
Non-Secure Phone
Video Demo
Q & A
