Chaotic Cipher System for Secure Wireless Communication
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Solution Overview
Problem
Conventional cryptographic systems are vulnerable to attacks, particularly in wireless network communications, as they can be described by algebraic equations, allowing keys to be recovered with sufficient time and resources, and existing encryption methods like AES and DES can be broken using algebraic attacks.
Innovation Solution
The method involves using an indexed array of encryption keys shared between a data encryption device and a data decryption device, where random or pseudorandom numbers are used to determine indices and keys for encrypting messages and indices, transforming traditional packet structures into unpredictable random bit streams to enhance security and detect cyber attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cryptographic systems use traditional encryption methods like AES and DES, then encryption can be performed efficiently, but the systems are vulnerable to algebraic attacks and key recovery
Solution Approach 1:
The patent replaces traditional algebraic cryptographic systems with a chaotic cipher system that uses chaotic maps and iterative mathematical transformations. This substitution of the underlying mathematical mechanism creates a system that is resistant to algebraic attacks while maintaining encryption efficiency
Solution Approach 2:
The patent changes the fundamental parameters of the cryptographic system by using chaotic maps with sensitive dependence on initial conditions. The system transforms plaintext through iterative applications of chaotic functions with multiple control parameters, making the encryption process unpredictable and resistant to conventional algebraic analysis
2Device complexity
If symmetric cryptography uses the same key for encryption and decryption, then the encryption process is simplified, but the key must be shared in advance in a secure manner which presents practicality problems
Solution Approach 1:
The patent performs preliminary action by pre-sharing a chaotic map function and its control parameters between communicating parties. This preliminary setup enables subsequent encryption and decryption operations to be performed independently without requiring continuous key exchange, simplifying the overall key distribution problem
3Ease of operation
If public-key cryptography uses different keys for encryption and decryption, then key distribution is simplified, but the system can still be described by algebraic equations allowing potential key recovery
Solution Approach 1:
The patent replaces the algebraic foundation of public-key cryptography with chaotic map-based encryption. The chaotic system's sensitivity to initial conditions and non-linear iterative nature creates a cryptographic mechanism that cannot be effectively analyzed or broken using traditional algebraic methods, even though key distribution remains simplified
Data Source
AI summary
The present invention provides a method for a data encryption device to perform network communications, the method comprising obtaining an indexed array of encryption keys, wherein the indexed array of encryption keys is shared with a data decryption device; obtaining a message to be encrypted; using a first random or pseudorandom number to determine an index; obtaining a first key from the array of encryption keys, wherein the first key corresponds to the index; selecting a second key from the plurality of encryption keys; encrypting the message using the first key and a second random or pseudorandom number; encrypting the index using the second key and a third random or pseudorandom number; transmitting the encrypted message and the encrypted index to the data decryption device.