Semiconductor Device Scramble Pattern Generation for Secret Data
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Solution Overview
Problem
Existing semiconductor devices face challenges in implementing encryption functions for secret data communications due to high manufacturing costs and increased power consumption, and existing scrambling techniques are vulnerable to malicious interference and lack verification of received scramble data.
Innovation Solution
A semiconductor device that uses a combination of first and second data, accumulated from transmission and reception data respectively, to generate a scramble pattern, which is used for scrambling and descrambling, allowing for detection of illegal data and preventing malicious processes, even in devices with low processing capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption function is implemented in semiconductor device, then secret data communications capability is improved, but manufacturing cost and power consumption increase
Solution Approach 1:
The patent replaces expensive encryption functions with inexpensive scrambling operations that can be implemented in low-capability devices. The scramble pattern is generated from public data without requiring complex cryptographic processing, enabling secret communications in devices with limited processing capability and power consumption constraints.
Solution Approach 2:
The patent uses public data (such as broadcast data or publicly available information) to generate the scramble pattern through copying and processing. Instead of using private cryptographic keys, the system copies public information to create the scrambling sequence, eliminating the need for complex encryption hardware while maintaining security through the unpredictability of the generated pattern.
2Ease of operation
If scramble pattern is transmitted at specific timing, then data transmission is simplified, but security deteriorates due to easy guessing by malicious third parties
Solution Approach 1:
The patent enables each device to autonomously generate the same scramble pattern by processing public data through an identical algorithm. Both transmitting and receiving devices independently create the scramble sequence from the same public input without requiring direct exchange of the pattern itself, eliminating security vulnerabilities associated with pattern transmission while maintaining operational simplicity.
Solution Approach 2:
The patent introduces public data as an intermediary that both devices use to generate the scramble pattern. Instead of directly transmitting the sensitive scramble pattern, the system uses publicly available information as a mediator that both parties process to arrive at the same secure scrambling sequence, thereby maintaining security while enabling coordinated operation.
3Device complexity
If scramble data is unidirectionally transmitted, then transmission process is simplified, but verification capability deteriorates
Solution Approach 1:
The patent implements bidirectional communication where both devices transmit and receive scramble data, enabling each device to verify received data by regenerating the expected scramble pattern from public data and comparing it with the received pattern. This feedback mechanism allows verification while maintaining relatively simple processing by using the same public data source for both generation and verification.
Data Source
AI summary
The present invention provides a semiconductor device capable of detecting illegal data in secret data communications. A semiconductor device that transmits and receives data includes a specific bit extraction block that extracts first data from transmission data in accordance with a first rule, another specific bit extraction block that extracts second data from reception data in accordance with a second rule, and a bit pattern accumulation buffer that accumulates the first data and the second data. A scramble pattern used when scrambling the transmission data is generated by a combination of the first data and the second data accumulated in the bit pattern accumulation buffer.