Chip-to-Chip Scrambling via Secret Negotiation
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Solution Overview
Problem
Conventional chip-to-chip communication systems are vulnerable to sniffing and killer packet attacks due to the exposure of scrambling polynomials and initialization values, which can lead to data confidentiality breaches and system malfunctions.
Innovation Solution
Implementing a secret negotiation phase between the transmitter and the receiver to dynamically determine the scrambling polynomial and initialization value for each transmission, using encrypted information to secure these values and prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If predetermined scrambling polynomial and initialization value are used for entire communication, then implementation is simple and fast, but confidentiality is compromised against sniffing attacks
Solution Approach 1:
The patent applies dynamics by transitioning from static predetermined scrambling parameters to dynamic parameters that change per transmission or transmission subset. The scrambling polynomial and initialization value are now determined through secret negotiation phases, making them variable and adaptive rather than fixed, thereby enhancing security while maintaining implementation feasibility through automated negotiation protocols
Solution Approach 2:
The patent implements preliminary action by conducting secret negotiation phases before actual data transmissions to establish scrambling parameters. This pre-negotiation ensures that secure, transmission-specific parameters are established in advance, preventing sniffing attacks without compromising transmission speed, as the cryptographic setup is completed beforehand
2Reliability
If conventional error protection by changing polynomial and initialization is implemented, then killer packet attacks are mitigated, but time consumption increases and new adapted attacks can still occur
Solution Approach 1:
The patent makes the scrambling parameters dynamic and transmission-specific through secret negotiation, so that each transmission or subset uses unique parameters. This eliminates the need for retransmission when killer packet attacks occur, as the parameters are already optimized for each transmission, thereby maintaining reliability without time loss
Solution Approach 2:
The secret negotiation phase incorporates feedback mechanisms where the receiver can request parameter changes or acknowledge successful reception. This feedback loop allows the system to adapt to potential attacks in real-time without full retransmission, reducing time loss while maintaining error protection capability
3Reliability
If encryption of negotiation phase is implemented, then scrambling parameter secrecy is enhanced, but computational complexity and energy consumption increase
Solution Approach 1:
The patent applies partial action by implementing encryption only for the negotiation phase rather than continuous encryption for all data transmissions. This selective approach provides necessary confidentiality for parameter exchange while minimizing energy consumption, as the computationally intensive encryption is performed only during the brief negotiation period, not throughout the entire communication
Data Source
AI summary
At least one transmission of scrambled data with a pseudo-random sequence generated by a scrambling polynomial and an initialization value is performed between a transmitter and a receiver. Prior to the transmission, transmitter and the receiver engage in a secret negotiation phase to specifically determine the scrambling polynomial and the initialization value for the at least one transmission.