Identity & Security In AllJoyn 14.06

Tim KelloggSaturday, July 19 2014

https://github.com/tkellogg/alljoyn-examples

https://github.com/tkellogg/alljoyn-core/tree/master/alljoyn_core/src

Embedded Security

Mitsubishi EMI Incident (2003)• Brakes disabled when given 1000-10000x legal

levels of EMI radiation• Car thinks brakes are locked, so it releases• All within limits required by law

Slammer Worm (2003)• Nuclear plant safety monitoring disabled for 5

hours• “The business value of access to the data within

the control center worth the risk of open connections between the control center and the corporate network”

• Unpatched MSSQL Server

Hello, my name is Bruce Schneier and I think routers are super duper easy to hack, mostly because you nerds never

patch the software

https://www.schneier.com/essays/archives/2014/01/the_internet_of_thin.html

University of Washington Study (2010)“We demonstrate that an attacker who is able to

infiltrate virtually any Electronic Control Unit (ECU) can leverage this ability to completely circumvent a

broad array of safety-critical systems”http://www.autosec.org/pubs/cars-oakland2010.

pdf

Hey, check it out! I made my own

encryption algorithm

Embedded Needs “Rails”• Software Updates• Security & Identity• Communication• Media Streaming• User Interfaces

Distributed Bus

Distributed Bus

Security

Auth Listeners• ALLJOYN_RSA_KEYX – X.509 certificates• ALLJOYN_SRP_KEYX – Show Random PIN• ALLJOYN_SRP_LOGON – preset U/P table• ALLJOYN_ECDHE_NULL• ALLJOYN_ECDHE_PSK • ALLJOYN_ECDHE_ECDSA – DSA

ALLJOYN_RSA_KEYX• RSA = Asymmetric key encryption• X.509 certificates– Trusted Certificate Authority

SRP_KEYX & SRP_LOGON• Threshold Cryptography• No trust required to establish a secure

connection• LOGON = Username & Password• KEYX = A PIN is displayed

ALLJOYN_SRP_KEYX

ECDHE• Elliptic Curve (EC) Cryptography• DHE = Diffie-Hellman key Exchange– Symmetric key encryption

ALLJOYN_ECDHE_NULL• Elliptic Curve Encryption• No verification of identity

ALLJOYN_ECDHE_PSK• PSK = Pre-Shared Key• Service already has the client’s public key• A password may also be used

ALLJOYN_ECDHE_ECDSA• ECDSA – Elliptic Curve Digital Signature

Algorithm• Certificate shows identity

Questions?

@kellogh

Practical Internet of Things