One-Chip Security Module for Smart Meter Data Encryption
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Solution Overview
Problem
Smart energy systems require a secure and reliable data management solution to protect against security threats, as existing technologies often rely on multi-chip configurations that are inefficient and lack robust encryption methods for data transmission.
Innovation Solution
An integrated one-chip security module with a first core unit for data collection and a second core unit for encryption, which accumulates data and encrypts it using hash values based on specific features, ensuring secure transmission to external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-chip configurations are used for data collection and encryption, then functional flexibility is improved, but device complexity and integration efficiency deteriorate
Solution Approach 1:
The patent combines data collection, storage, and encryption functions into a single integrated chip structure. The first core unit collects and stores measured data in security memory, while the second core unit encrypts and transmits data, all within one chip to reduce system complexity and improve integration efficiency.
Solution Approach 2:
The integrated chip is designed with multi-functional capabilities, where a single chip performs data collection, storage, encryption, and transmission functions that were previously distributed across multiple chips, thereby maintaining functional flexibility while reducing overall device complexity.
2Speed
If data is transmitted immediately after collection, then response speed is improved, but data security deteriorates due to lack of accumulation and analysis
Solution Approach 1:
The system accumulates measured data in security memory before transmission. The second core unit waits for a predetermined number of data points to be collected, then performs encryption and transmission. This preliminary accumulation allows for better security while maintaining efficient data handling.
Solution Approach 2:
The operation unit monitors the accumulation of data in security memory and controls the encryption and transmission process based on whether a predetermined number of data points have been reached. This feedback mechanism ensures data is transmitted at appropriate intervals, balancing security requirements with response speed.
3Reliability
If encryption is performed on individual data points, then data security is improved, but processing time and energy consumption increase
Solution Approach 1:
Data is accumulated in security memory before encryption occurs. By preparing and storing multiple data points first, the system can then encrypt and transmit them together, reducing the frequency of encryption operations and thereby decreasing overall processing time and energy consumption while maintaining security.
Data Source
AI summary
An integrated one-chip security module for a smart energy security threat response included in an intelligent smart meter constituting a smart energy system includes: a first core unit collecting measured data generated in an operation process of the smart energy system and stores the measured data in a security memory; and a second core unit encrypting the measured data stored in the security memory and transmitting the encrypted data to an external device.