Messaging Protocols: Difference between revisions
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===Candidate Protocols for Messaging and Encapsulation=== | ===Candidate Protocols for Messaging and Encapsulation=== | ||
====Low-level | ====Low-level Signaling==== | ||
The purpose of the low-level protocol is to provide primatives such as: | The purpose of the low-level protocol is to provide primatives such as: | ||
*Message Encapsulation appropriate for different mediums | *Message Encapsulation appropriate for different mediums | ||
Revision as of 00:01, 26 November 2011
Candidate Protocols for Messaging and Encapsulation
Low-level Signaling
The purpose of the low-level protocol is to provide primatives such as:
- Message Encapsulation appropriate for different mediums
- RS-232
- RS-485
- Ethernet
- SMS/Cellular
- Polling, and unique identification protocol
- Uniquely identify all devices on the network
- Handle collisions
Protocol Candidates
End to end session protocol
Considerations
- Ideally, session is encrypted and authenticated at all levels
- User should know they are interacting with a legitimate terminal
- Token should know that it is talking to a legitimate reader
- Reader should not leak any secrets during transaction
- Secrets should not be subject to interception between reader and server/panel
- Physically secure wiring/network
- Secure/encrypted protocols
- Messages should be not be able to vulnerable to session replay
- Time stamping/serializing of messages
- Messages should not be subject to intentional or accidental alteration in transit
- Message CRC and cryptographic signing/MAC protocol