Removable Data Cartridge Integrating Key and Data Memory
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Solution Overview
Problem
Cryptographic systems require separate interfaces for loading cryptographic keys and data, which can be cumbersome and increase the size and weight of devices, especially in avionic data transfer systems.
Innovation Solution
A removable data storage device with integrated key and data memories, allowing both cryptographic keys and data to be loaded onto a single device, which can then be interfaced with a host system using different protocols for key and data transfer, eliminating the need for a dedicated key fill interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate key loading interface and data loading interface are used, then cryptographic security and data integrity are maintained, but device size and weight increase
Solution Approach 1:
The patent combines the key loading interface and data loading interface into a single integrated removable data cartridge. The cartridge contains both key memory for cryptographic keys and data memory for processed data, allowing both functions to be performed through one interface rather than requiring separate physical devices. This merging reduces device size and weight while maintaining security through protocol-based separation of key and data transfer operations.
Solution Approach 2:
The removable data cartridge is designed as a universal device that can perform multiple functions: storing cryptographic keys, loading keys to the cryptographic system, and transferring data to be processed. This multi-functional cartridge eliminates the need for separate dedicated key loading devices and data storage devices, reducing the overall system complexity and weight while maintaining distinct communication protocols for key and data operations.
2Reliability
If separate key loading device and storage device are used, then cryptographic processing requirements are met, but operational complexity increases
Solution Approach 1:
The patent merges the key loading device and storage device into a single removable data cartridge that can be inserted into one interface. This eliminates the need to separately connect and operate two different devices, simplifying the operational process. The cartridge automatically manages key and data transfer through dedicated interfaces within the single device, reducing user complexity while maintaining cryptographic security.
Solution Approach 2:
The removable data cartridge incorporates self-service functionality by automatically managing the separation and transfer of cryptographic keys and data through its internal architecture. The device contains dedicated key memory and data memory with separate communication protocols, allowing it to autonomously handle the distinct requirements of key loading and data transfer without requiring complex external coordination or manual intervention.
3Reliability
If dedicated key loading interface is used, then key security is ensured, but interface complexity increases
Solution Approach 1:
The patent segments the removable data cartridge into distinct functional components: key memory for cryptographic keys, data memory for processed data, a key loading interface for key transfer, and a data interface for data transfer. This segmentation allows each component to be optimized for its specific function with appropriate security protocols, while the integrated cartridge design prevents the overall system complexity from increasing proportionally.
Solution Approach 2:
The removable data cartridge acts as an intermediary device between the external environment and the cryptographic system. It contains dedicated interfaces for key loading and data transfer that mediate all communications, isolating the cryptographic system from direct external connections. This intermediary role maintains key security through protocol-based separation while managing interface complexity within the portable cartridge rather than the main system.
Data Source
AI summary
Systems and methods using a cryptographic key loader embedded in a removable data storage device are provided. In one embodiment, the removable data storage device can include a dedicated key memory storing one or more cryptographic keys for cryptographic processing of data by a host system. The removable data storage device can further include a dedicated data memory storing data subject to cryptographic processing by the host system. When the removable data cartridge is interfaced with the host system, the cryptographic key(s) and the data subject to cryptographic processing can become accessible to host system.