Polar Coding Encryption Using Multi-Key Matrix Indexing
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Solution Overview
Problem
Conventional encryption algorithms for data security in 5G wireless systems, such as AES and DES, are complex and vulnerable to cyber-attacks, necessitating improved encryption methods that ensure data integrity and security.
Innovation Solution
A novel data encryption scheme based on channel polarization theory using two or more cipher keys for polar coding, where decryption requires all cipher keys to be correct, ensuring multi-cipher security and preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional encryption algorithms (AES, DES) are used for data security in 5G wireless systems, then data encryption can be performed, but the algorithms are complex and vulnerable to cyber-attacks
Solution Approach 1:
The encryption process is segmented into polar coding operations using multiple cipher keys, where the data is transformed through a polarizing matrix with different keys applied at different stages, breaking down the complex encryption into manageable polar coding steps that are more resistant to cyber-attacks
Solution Approach 2:
The patent changes the fundamental parameters of encryption by transitioning from traditional substitution-permutation networks (AES/DES) to polar coding based on channel polarization theory, using binary vectors and polarizing matrices with different algebraic structures that simplify the encryption process while enhancing security against modern attacks
2Reliability
If multiple cipher keys are used for polar coding encryption, then security is enhanced and unauthorized access is prevented, but the encryption and decryption processes require multiple keys which may increase complexity
Solution Approach 1:
Multiple cipher keys are merged into a unified polar coding framework where different keys (first cipher key, second cipher key, etc.) are applied sequentially through the polarizing matrix operations, combining their security contributions while maintaining a consistent mathematical structure that simplifies key management compared to traditional multi-layer encryption
Data Source
AI summary
Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for data encryption and decryption. In example embodiments, a first cipher key and a second cipher key are obtained. The first cipher key comprises a vector of cipher elements, and the second cipher key comprises a set of indices corresponding to a subset matrix of a polarizing matrix. A cipher vector is generated by polar coding of a data vector based on the first and second cipher keys and the polarizing matrix. The data and cipher vectors are combined for encryption of the data vector.