Ciphertext Hybrid Operation via Multi-Level Conversion Lattice
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Solution Overview
Problem
Current technologies lack a unified, efficient, and clear solution for hybrid operations involving ciphertexts of different types, leading to difficulties in determining the type of operation results and incurring high resource overheads due to the use of trusted execution environments (TEE) for ciphertext type conversion.
Innovation Solution
A multi-level ciphertext conversion relationship is introduced, establishing unidirectional relationships among preset ciphertext types, allowing for efficient determination of a target ciphertext type through a lattice-based structure or topological sequence, enabling hybrid operations with reduced TEE operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TEE is used for ciphertext type conversion, then operation reliability is improved, but system overhead increases
Solution Approach 1:
The patent segments ciphertext types into multiple levels (first level ciphertext types and second level ciphertext types) with distinct conversion relationships. This segmentation allows the system to manage type conversions more efficiently by dividing the conversion space into manageable levels, reducing the overhead of handling all possible ciphertext type combinations in a single TEE environment.
Solution Approach 2:
The patent introduces a ciphertext type conversion relationship as an intermediary mechanism between different ciphertext types. This conversion relationship acts as a mediator that defines how to transform ciphertext from one type to another, enabling the system to handle type conversions without requiring complex TEE operations for every possible transformation scenario.
2Ease of operation
If unified ciphertext conversion relationship is established, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent segments the ciphertext conversion relationships into multiple levels, where first level ciphertext types have direct conversion relationships and second level ciphertext types have different conversion relationships. This segmentation makes the conversion relationships more manageable and easier to implement while maintaining a structured approach to type conversions.
Solution Approach 2:
The patent introduces a hierarchical dimension to ciphertext type management by distinguishing between first level and second level ciphertext types. This dimensional approach adds a level of organization to the conversion relationships, making the system more scalable and easier to operate by providing clear guidelines for type conversions at different levels.
3Adaptability or versatility
If multiple ciphertext types are supported, then adaptability is improved, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent segments ciphertext types into multiple levels with distinct characteristics and conversion relationships. This segmentation provides a clear framework for detecting and measuring different ciphertext types, as each level has well-defined conversion relationships that can be systematically identified and managed.
Solution Approach 2:
The patent adds a hierarchical dimension to ciphertext type detection by introducing first level and second level ciphertext types with different conversion relationships. This dimensional structure makes it easier to detect and measure ciphertext types by providing clear categorical distinctions and conversion pathways.
Data Source
AI summary
A ciphertext hybrid operation method and apparatus are disclosed. The method comprises: receiving a target function signature and a corresponding operand set, the operand set comprising ciphertext operands corresponding to at least two preset ciphertext types; determining a target ciphertext type corresponding to the at least two preset ciphertext types, wherein the target ciphertext type is simultaneously located in paths formed between each of the at least two preset ciphertext types and the highest-level preset ciphertext type; and in a case where the target ciphertext type supports an operation function specified by the target function signature, decrypting all the ciphertext operands in the operand set, converting the decrypted ciphertext operands to use the target ciphertext type for representation, and performing operation on the converted ciphertext operands according to the operation function specified by the target function