Semiconductor Channel Data Protection via Dedicated Encryption Modules
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Solution Overview
Problem
Semiconductor devices face data leakage issues due to unprotected communication channels, which can be compromised through memory interfaces and hacking by other modules, leading to unauthorized data access.
Innovation Solution
Implementing a semiconductor device with multiple function modules and encryption modules that use distinct encryption keys for data encryption and decryption, ensuring each channel is protected from others, with the operating system managing key settings and storage within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted through common bus and memory without encryption, then communication efficiency is maintained, but data security deteriorates and data leakage occurs
Solution Approach 1:
The patent divides the encryption system into separate encryption modules for different function modules. Each encryption module is associated with a specific function module and uses a dedicated encryption key, segmenting the overall encryption system to manage complexity while ensuring data security for each channel independently
Solution Approach 2:
The patent introduces encryption modules as intermediary components between function modules and the common bus/memory. These encryption modules act as mediators that encrypt data before transmission and decrypt received data, protecting communication channels without requiring changes to the existing bus architecture
2Reliability
If encryption modules are added to protect each channel, then data leakage prevention is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning different encryption keys and encryption modules to different function modules and their respective communication channels. Each channel receives localized encryption protection tailored to its specific security requirements, rather than applying a uniform encryption approach across all channels
Solution Approach 2:
The encryption modules are designed to perform multiple functions: encrypting outgoing data from their associated function module, decrypting incoming data destined for their function module, and managing their own encryption keys. This multi-functionality reduces the need for separate dedicated components for each encryption task
Data Source
AI summary
A semiconductor device may include: a bus; first and second function modules configured to communicate via the bus; a first encryption module configured to encrypt first data output from the first function module using a first encryption key to generate first encrypted data; and/or a second encryption module configured to decrypt the first encrypted data using the first encryption key, to output the decrypted first data to the second function module, and to encrypt second data output from the second function module using a second encryption key to generate second encrypted data. A semiconductor device may include: a bus; first and second modules configured to communicate via the bus; and/or an encryption module configured to use different encryption policies for first data, which is output from the first module and stored in a memory, and second data, which is output from the second module and stored in the memory.