Quantum-Safe Vocal Contracts Using Lattice-Based Dual Signatures
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Solution Overview
Problem
Existing cryptographic methods are vulnerable to quantum computer attacks, as they rely on problems that can be solved by a sufficiently powerful quantum computer, making digitally signed vocal contracts insecure against such threats.
Innovation Solution
The implementation of a quantum-safe dual signature scheme using CRYSTALS-Dilithium, a lattice-based cryptographic algorithm, alongside standard elliptical curve digital signatures, to generate and verify digital signatures for vocal contracts, ensuring security against both classical and quantum computer attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard cryptographic methods are used for digitally signing vocal contracts, then the signing process is simple and compatible with existing systems, but the security is vulnerable to quantum computer attacks
Solution Approach 1:
The patent applies composite cryptography by combining lattice-based cryptographic algorithms (resistant to quantum attacks) with traditional digital signature methods. This creates a hybrid cryptographic system that leverages the security properties of lattice-based cryptography while maintaining compatibility with existing digital infrastructure, thereby achieving quantum resistance without complete system replacement
Solution Approach 2:
The patent changes the mathematical parameters and algorithms underlying cryptographic systems from traditional number-theory-based methods to lattice-based methods. This parameter change fundamentally alters the security foundation to be resistant to quantum computer attacks while maintaining the functional form of digital signatures that systems can verify
2Reliability
If quantum-safe cryptography is implemented to secure vocal contracts, then security against quantum attacks is improved, but computational overhead and processing time increase
Solution Approach 1:
The patent implements quantum-safe cryptography selectively for specific cryptographic operations rather than entire systems. By applying lattice-based signatures only where quantum resistance is critical (digital signing of vocal contracts) while using traditional methods for less sensitive operations, the system achieves necessary security without excessive computational overhead across all functions
3Reliability
If lattice-based cryptographic algorithms are used for digital signatures, then resistance to quantum computer attacks is achieved, but compatibility with existing cryptographic infrastructure is reduced
Solution Approach 1:
The patent uses hybrid cryptographic schemes as intermediaries that bridge lattice-based cryptography and traditional cryptographic infrastructure. These hybrid schemes allow systems to verify signatures using both lattice-based and traditional methods, serving as a mediator that enables quantum-resistant signatures to work within existing cryptographic ecosystems without requiring complete infrastructure replacement
Data Source
AI summary
Automatic vocal contract formation is provided. It is determined whether an indication of acceptance of an audio file and a transcript file corresponding to a verbal communication containing an agreement was received from parties. The audio file and the transcript file having been digitally signed by the parties based on cryptographic private keys associated with a quantum-safe dual signature scheme are exchanged in response to determining that the indication of acceptance was received from each of the parties. Verification of authenticity of the audio file and the transcript file of the vocal contract is received from the parties based on each of the parties successfully verifying digital signatures of the audio file and the transcript file using cryptographic public keys associated with the quantum-safe dual signature scheme.