DECT Base Station Registration via Trusted Device Credentials
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Solution Overview
Problem
The challenge is to provide a secure and simple method for registering new DECT devices in a DECT ULE Home Automation network, as existing methods require a PIN entry, which is not feasible for devices without keyboards, and existing pairing methods lack security.
Innovation Solution
A system where a trusted DECT device sends registration credentials to a DECT base station, allowing registration only if credentials match and within a specified time window, with user verification through out-of-band feedback to ensure security and simplicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PIN entry method is used for DECT device registration, then security is improved, but ease of operation deteriorates because devices without keyboards cannot enter PIN codes
Solution Approach 1:
A trusted DECT device acts as an intermediary to transfer credentials to the base station, enabling secure registration of devices without keyboards. The intermediary device receives credentials from the user and forwards them to the base station, eliminating the need for the requesting device to have keyboard input capabilities while maintaining security through credential verification.
Solution Approach 2:
The registration process is segmented into separate functions: credential input (performed by user on trusted device), credential transmission (performed by trusted device to base station), and credential verification (performed by base station). This segmentation allows devices without keyboards to be registered by offloading the credential input function to a trusted device.
2Ease of operation
If simple pairing with well-known PIN (0000) is used, then ease of operation is improved, but security deteriorates
Solution Approach 1:
Credentials are preliminarily established on a trusted DECT device before the registration process. The trusted device stores secure credentials in advance, and during registration, these pre-established credentials are transmitted to the base station rather than using a well-known PIN. This preliminary setup maintains ease of operation while ensuring security through unique, pre-configured credentials.
3Ease of operation
If credential verification without time window is used, then ease of operation is improved, but security deteriorates due to potential unauthorized registration
Solution Approach 1:
The base station dynamically opens a time-limited registration window after receiving credentials from the trusted device. During this dynamic time window, the base station accepts registration requests with the provided credentials. This dynamic approach maintains ease of operation by providing a clear registration period while ensuring security by automatically closing the window, preventing unauthorized later registrations.
Data Source
AI summary
A system may be provided and may include a trusted DECT device; and a DECT base station; wherein the trusted DECT device is arranged to send, to the DECT base station, registration allowable DECT device credentials; wherein the DECT base station is arranged to: receive from a requesting DECT device a request for registration of the requesting DECT device to the DECT base station; wherein the request comprises requesting DECT device credentials; register the requesting DECT device to the DECT base station if the requesting DECT device credentials match the registration allowable DECT device credentials; and prevent a registration of the requesting DECT device to the DECT base station if the requesting DECT device credentials differ from the registration allowable DECT device credentials.