Communication System Using Varying Bit Sizes and Dummy Data
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Solution Overview
Problem
Existing communication systems that encrypt transmission data using standardized units like 8 bits or 16 bits are vulnerable to decryption by third parties if the unit sizes are known, making it easier to break the encryption algorithm.
Innovation Solution
A communication system that cuts transmission data into multiple pieces with varying bit sizes and includes dummy data, ensuring that encryption and decryption processes occur in non-standard units, making it difficult for third parties to analyze or break the encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If transmission data is encrypted using standardized units (8 bits or 16 bits), then encryption processing is simplified and compatible with standard computers, but the encryption becomes vulnerable to decryption by third parties who know the unit sizes
Solution Approach 1:
The transmission data is divided into multiple pieces of cut data with varying bit sizes rather than uniform standardized units. This segmentation into non-uniform pieces prevents third parties from using standard decryption methods that rely on knowing fixed unit sizes, while still allowing the communicating parties to successfully encrypt and decrypt the data
Solution Approach 2:
The patent introduces asymmetry in the data unit sizes used for encryption. Instead of using symmetric standardized units (all 8 bits or all 16 bits), the system uses asymmetric varying bit sizes for different pieces of cut data. This asymmetric structure makes it difficult for third parties to break the encryption while maintaining functionality for authorized communication
2Productivity
If transmission data is cut into uniform standardized units, then data processing is efficient and compatible with general computers, but the encryption algorithm becomes easier to break
Solution Approach 1:
The data is segmented into multiple pieces with varying bit sizes rather than uniform units. This segmentation maintains processing capability while introducing variability that prevents efficient standard decryption attacks
Solution Approach 2:
The patent changes the parameter of data unit size from fixed standardized values to variable bit sizes. This parameter change maintains the ability to process data while introducing complexity that prevents efficient decryption by third parties who would need to analyze variable-sized units rather than standard fixed-size blocks
Data Source
AI summary
To improve a communication system including two communication apparatuses in order to reduce a possibility of having communication thereof decrypted by a third party. The communication system includes a first communication apparatus and a second communication apparatus, where one of the communication apparatuses encrypts transmission subject data to generate encrypted data and transmits it to the other communication apparatus which then decrypts received encrypted data. Before performing encryption, each of the communication apparatuses cuts the transmission subject data by a predetermined number of bits to generate transmission subject cut data. In this case, each of the communication apparatuses varies the number of bits of the transmission subject cut data, and mixes dummy data of a size of which number of bits matches with the largest number of bits out of the numbers of bits of the transmission subject cut data into the transmission subject cut data other than that of the largest number of bits.


