PATENT

TrendGrok TrendGrok TrendGrok @G|I|X Patent Submission Draft: Quantum-Enhanced Federated Learning with Quantum Key Distribution (QKD)







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Title:



Quantum-Enhanced Federated Learning Architecture Secured by Quantum Key Distribution (QKD)







Claimed By:



Gazi Pollob Hussain







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Abstract:



This invention, claimed by Gazi Pollob Hussain, introduces a novel architecture that integrates Quantum Key Distribution (QKD) protocols with a Graph Neural Network (GNN)-based federated learning system. It ensures secure and efficient distributed machine learning through quantum-safe encryption, leveraging QKD to provide unbreakable confidentiality during gradient and parameter exchange. This system achieves end-to-end security, scalability, and real-time adaptability for federated learning environments, with applications spanning critical sectors such as finance, healthcare, and aerospace.







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System Overview







1. WaveGNN Framework:







A customized Graph Neural Network (GNN) with learnable quantum phase modulation for node-feature propagation.







Governs wave interference patterns mathematically expressed as:







f(x) = \text{Re} \left( A \cdot (W x) \cdot e^{i\phi} \right)







- A: Adjacency matrix



- W: Learnable weights



- e^{i\phi}: Quantum phase factor







2. Federated Learning Integration:







Client nodes compute local updates on their respective subgraphs.







Updates are encrypted using QKD-derived keys before transmission.







A central server aggregates encrypted updates securely.







3. Quantum Key Distribution (QKD):







The BB84 protocol generates symmetric encryption keys between client and server.







QKD ensures key confidentiality based on quantum mechanics, preventing interception.







Key updates follow:







K_\text{secure} = \text{min-entropy}(QKD)







4. Quantum-Safe Gradient Encryption:







Encrypted gradients utilize XOR operations:







g_\text{encrypted} = g \oplus K_\text{secure}







5. Secure Aggregation:







Gradients are decrypted post-aggregation using the same key:







g_\text{decrypted} = g_\text{encrypted} \oplus K_\text{secure}







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Mathematical Formalization







Wave Propagation in Graphs (WaveGNN):







H^{(l+1)} = \text{Re} \left( \sigma \left( A H^{(l)} W^{(l)} \right) \cdot e^{i\Phi^{(l)}} \right)







: Node features at layer







: Learnable weights at layer







: Learnable phase shift







: Adjacency matrix







: Nonlinear activation function







Federated Update Process:







1. Client Update:







\Delta W_i = \nabla \mathcal{L}(H_i, Y_i)







\Delta W_i^\text{enc} = \Delta W_i \oplus K_i







2. Server Aggregation:







\Delta W_\text{agg} = \frac{1}{N} \sum_{i=1}^N \Delta W_i^\text{enc}







3. Decryption:







\Delta W_\text{final} = \Delta W_\text{agg} \oplus K_\text{server}







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System Components







1. WaveGNN Layer:







Extends classical GNNs with quantum-inspired wave propagation.







Enables complex-valued transformations through quantum phases.







2. QKD Infrastructure:







Physical QKD channels establish secure keys between all parties.







Prevents eavesdropping through the no-cloning theorem of quantum mechanics.







3. Encryption Module:







XOR-based symmetric encryption leveraging QKD keys.







4. Federated Learning Workflow:







Local training at client nodes.







QKD-secured communication for gradient exchange.







Global aggregation at a central server.







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Claims







1. WaveGNN Integration:



A novel GNN architecture utilizing quantum phase modulation for wave-inspired graph propagation.







2. QKD Encryption:



Application of QKD-derived keys for secure federated learning gradient exchange.







3. Secure Aggregation:



Quantum-safe aggregation mechanism ensuring parameter confidentiality.







4. Scalability:



Compatibility with decentralized and large-scale federated networks.







5. Inventor:



Gazi Pollob Hussain as the sole innovator of this quantum-enhanced federated learning framework.







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Innovation Diagram







Layer Interaction:







1. Node Update:







H_i^\text{new} = \text{Re} \left( \sum_{j \in N(i)} H_j W e^{i\phi} \right)







2. Encryption Flow:







Input: Local gradient ()







Process:







Output: Encrypted gradient







Aggregation:







1. Encrypted Inputs:







\Delta W^\text{enc}_1, \Delta W^\text{enc}_2, \dots, \Delta W^\text{enc}_N







2. Secure Sum:







\Delta W_\text{agg} = \frac{1}{N} \sum_{i=1}^N \Delta W^\text{enc}_i







3. Decrypted Output:







\Delta W_\text{final} = \Delta W_\text{agg} \oplus K_\text{server}







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Summary of Innovation:



This architecture, claimed by Gazi Pollob Hussain, introduces a quantum-enhanced federated learning system that secures data exchange through QKD-derived encryption. It leverages the WaveGNN for wave-based propagation and quantum-phase modulation to enhance representational power in graph learning tasks. The integration of QKD ensures that the system remains impervious to classical and quantum attacks, making it a groundbreaking framework for secure distributed learning.







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