1.. _osdp-sample: 2 3Open Supervised Device Protocol (OSDP) 4###################################### 5 6Open Supervised Device Protocol (OSDP) is an IEC standard (IEC 60839-11-5) 7intended to improve interoperability among access control and security products. 8It supports Secure Channel (SC) for encrypted and authenticated communication 9between configured devices. 10 11OSDP describes the communication protocol for interfacing one or more Peripheral 12Devices (PD) to a Control Panel (CP) over a two-wire RS-485 multi-drop serial 13communication channel. Nevertheless, this protocol can be used to transfer 14secure data over any stream based physical channel. Read more about `OSDP here 15<https://github.com/goToMain/libosdp/>`_.. 16 17Although OSDP is steered towards the Access and Security industries, it can be 18used as a general communication protocol for devices in a secure way without 19too much resource requirements. The security is not top-notch (AES-128) but it 20is reasonable enough, given that the alternative is no security at all. 21 22OSDP Supports the control of the following components on a PD: 23 24- LED 25- Buzzer 26- Keypad 27- Output (GPIOs) 28- Input Control (GPIOs) 29- Displays 30- Device status (tamper, power, etc.,) 31- Card Reader 32- Fingerprint Reader 33
