RPMB Data Frame Single Header Command Queue
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Solution Overview
Problem
Current Replay Protected Memory Block (RPMB) data frames have high overhead and inefficiencies in data transfer, leading to slower performance compared to normal memory operations, due to their structured format and requirement for multiple security protocols, which limits the queue depth and parallelism in RPMB operations.
Innovation Solution
The RPMB data frame structure is optimized by reducing overhead, rearranging byte orders, and implementing a command queue mechanism that allows for parallel processing of RPMB operations, enabling efficient data transfer and improved performance by maintaining separate queues for each RPMB region and using a single header per transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RPMB data frame uses a structured format with multiple security protocols, then security and reliability are improved, but data transfer overhead increases and performance deteriorates
Solution Approach 1:
The patent segments the RPMB data frame into distinct components: a single header containing control information, variable-length data payload, and integrity check fields. This segmentation allows the header to be processed once for multiple operations while maintaining security protocols, reducing redundant overhead in subsequent transfers.
Solution Approach 2:
The patent changes the parameter structure by reducing the header size from traditional multi-header formats to a single compact header, and by making the data payload length variable rather than fixed. This parameter optimization maintains security through integrity checks while significantly reducing transfer time and overhead.
2Reliability
If the RPMB data frame uses a structured format with multiple security protocols, then security and reliability are improved, but device complexity increases
Solution Approach 1:
The patent merges multiple security protocol requirements into a single integrated data frame structure. The header combines control information, addressing, and security fields into one unified structure, eliminating the need for separate headers for each protocol and simplifying the overall device complexity while maintaining security.
Solution Approach 2:
The single header structure serves multiple functions: it contains control signals, addresses, security information, and integrity check fields. This multi-functional design reduces the number of separate data frame components needed, simplifying the device structure while supporting multiple security protocols.
3Reliability
If the RPMB data frame uses a structured format with multiple security protocols, then security and reliability are improved, but productivity decreases
Solution Approach 1:
The patent performs preliminary actions by pre-computing integrity check values and preparing the single header structure before data transfer begins. This allows for faster processing during actual transfers, as the header needs to be processed only once rather than multiple times for different protocols, thereby improving productivity while maintaining security.
Solution Approach 2:
The patent changes the data frame parameters to use a single header with variable-length payloads, which significantly improves data transfer efficiency. This parameter optimization reduces the number of protocol-specific overhead fields, allowing for faster and more efficient data transfers while maintaining security through integrity verification.
4Reliability
If the RPMB data frame uses a structured format with multiple security protocols, then security and reliability are improved, but the queue depth and parallelism are limited
Solution Approach 1:
The patent segments the data frame into a single header and variable-length data payload, which enables better queue management. The single header can be processed once for multiple sequential operations, allowing deeper queues and improved parallelism in RPMB operations while maintaining security through integrity checks on each operation.
Data Source
AI summary
Devices and techniques are disclosed herein for providing an improved Replay Protected Memory Block (RPMB) data frame and command queue for communication between a host device and a memory device.