Quantum Hash Digest Fingerprints Against Adversarial Attacks
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Solution Overview
Problem
Many hash functions are insecure and vulnerable to adversarial attacks, allowing adversaries to recover original information or compromise the integrity of hash digests.
Innovation Solution
Enhance hash digests using quantum computing by dividing symbols into groups, mapping each group to a point on a Bloch sphere, and computing an expectation value of a quantum system initialized in a specified quantum state to generate a quantum fingerprint, which can be further processed or sampled to increase complexity and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If classical hash functions are used, then computation is fast and simple, but security is weak and vulnerable to adversarial attacks
Solution Approach 1:
The patent replaces classical mechanical computing systems with quantum computing systems to enhance hash digest security. By using quantum mechanics principles (qubits, Bloch sphere mappings, expectation values) instead of classical computation, the system achieves higher security against adversarial attacks while maintaining computational feasibility through quantum parallelism and interference effects.
Solution Approach 2:
The patent transforms the hash digest by mapping classical symbols to quantum parameters (points on the Bloch sphere). This parameter transformation from classical discrete symbols to continuous quantum states (angles, expectation values) increases the complexity space and entropy, making the hash digest more resistant to attacks while preserving the essential information.
2Reliability
If hash digest complexity is increased to improve security, then resistance to adversarial attacks improves, but computation becomes more resource-intensive
Solution Approach 1:
The patent performs preliminary quantum state initialization by mapping hash digest symbols to qubit states on the Bloch sphere before the actual security verification. This preliminary quantum encoding creates a structured quantum fingerprint that enhances security properties while allowing efficient subsequent processing and comparison operations.
Solution Approach 2:
The patent creates a quantum copy or representation of the hash digest information through quantum state preparation. Instead of directly manipulating the classical hash digest, the system prepares quantum states that encode the same information, enabling secure comparison and verification operations with reduced computational resource requirements.
Data Source
AI summary
Methods, systems, and apparatus for enhancing cryptographic hash digests. In one aspect, a method includes obtaining a hash digest that represents a data input. Symbols in the hash digest are divided into a number of groups of equal size. Each group is mapped to a respective point on a Bloch sphere. A quantum system comprising multiple qubits is initialized by initializing each qubit of the multiple qubits in a quantum state specified by a respective point on the Bloch sphere. An expectation value of the initialized quantum system is computed to obtain a quantum fingerprint for the data input.