Information Processing Device with Segmented Storage Security
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Solution Overview
Problem
Existing electronic apparatuses face challenges in enhancing security for stored secret information, such as identification data and encryption keys, as current security measures are not sufficient to prevent unauthorized access and data manipulation.
Innovation Solution
An information processing device comprising a first storage section for read-only data, an operation section for encoding and decoding using key data, and a second storage section with adjustable access conditions, which restricts data reading, key data changes, and access condition modifications after specific events, thereby enhancing security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional storage and processing methods are used, then ease of operation is maintained, but security is insufficient against unauthorized access and data manipulation
Solution Approach 1:
The storage device is divided into multiple storage regions (first storage region for initial data, second storage region for subsequent data) with different access control mechanisms. Each region has specific access conditions that must be met, creating segmented security zones that prevent unauthorized access while maintaining operational functionality.
Solution Approach 2:
Access conditions are set in advance for each storage region before data operations occur. The system preliminarily establishes read-only, read-write, or forbidden access permissions for each region, preventing unauthorized operations before they can occur rather than responding after security breaches.
2Reliability
If access control restrictions are implemented, then security is improved, but ease of operation deteriorates due to limited data access
Solution Approach 1:
The access control system transitions from static to dynamic permissions. Storage regions can change from read-only to read-write status based on whether predetermined operations have been completed. This dynamic adjustment allows the system to maintain security while enabling necessary data access when conditions are met.
Solution Approach 2:
The access permissions for storage regions are changed as parameters based on operational milestones. When specific operations are completed, the system changes the access parameter from restricted to permitted, allowing flexible control over data accessibility without compromising overall security architecture.
3Adaptability or versatility
If key data is stored for encoding and decoding operations, then functionality is maintained, but security vulnerabilities increase from potential key exposure
Solution Approach 1:
Different storage regions are assigned different quality characteristics regarding security. The first storage region has stricter access controls (read-only after initialization) compared to other regions. This local quality differentiation ensures that critical key data receives enhanced protection while allowing other data to have more flexible access permissions.
Data Source
AI summary
An information processing device of the present disclosure includes: a first storage section for reading only that stores first data beforehand, and restricts reading of the first data after a first event; an operation section that performs one or both of encoding and decoding with use of key data, and restricts, after a second event, change of the key data to be used; a second storage section being readable and writeable and including a plurality of storage regions for each of which access conditions are set, the second storage section that restricts change of the access conditions after a third event; and an information processor that controls the first storage section, the operation section, and the second storage section to perform information processing.