It has been known for a long time (Stoll, 1989) that having a view of a communications dialog between two computers is a high effective and sometimes the only way to perform debug and maintenance activities. One of the first things Frank Gasztonyi suggested was to leverage the bus nature of 2-wire RS-485 by building […]
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Coming Out Party for OSDP
On August 9th 2023 there was a presentation at the annual BlackHat conference that highlighted vulnerabilities found within OSDP. This sparked many discussions online and inspired the creation of a few blog posts. As someone who has been involved with advocating OSDP since 2018, the reaction to the presentation was a wake-up call. It is […]
OSDP Device Communication
It’s hard to believe that the physical industry continued deploying readers with antiquated insecure Wiegand protocol. The rest of the world has incorporated seamless secure communications on just about every piece of hardware sold. Unlike the Wiegand protocol, the Open Supervised Device Protocol (OSDP) allows for two-way communication. OSDP is huge step forward in allowing readers and other security devices to become intelligent and have the ability to fully communicate with the rest of the world.