Beacon Device Advertisement Packet Encryption

The patent applies preliminary action by pre-registering beacon devices with the server before they broadcast advertisement packets. The server stores registration information including device identifiers and authentication credentials. When a beacon device broadcasts an advertisement packet, it includes encrypted authentication data that can be verified by the server. This preliminary registration and authentication setup ensures that only authorized devices can successfully broadcast and be detected by relevant electronic devices, resolving the security issue while maintaining broadcast coverage.

The patent applies parameter changes by using time information (such as timestamps or time-based counters) as a dynamic parameter for encryption. The encryption key or authentication data in the advertisement packet is generated based on the current time or elapsed time since registration. This time-based approach provides security without requiring complex cryptographic algorithms, as the security relies on the easily managed time parameter that changes continuously, making it difficult for unauthorized devices to generate valid authentication data.