Quantum-Signed PKI Certificates for Counterfeit Prevention
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Solution Overview
Problem
Existing Public Key Infrastructure (PKI) systems face challenges in ensuring the security and trustworthiness of certificates due to the potential for counterfeit certificates, as traditional cryptographic methods can be vulnerable to attacks, especially with the advent of quantum computing capabilities.
Innovation Solution
Implementing a Public Key Infrastructure using Quantum Computers (PKIQC) where certificates are signed with digital signature algorithms run on Quantum Computers (QCs), ensuring that only the Certificate Authority (CA) with access to the private keys can generate certificates, and relying parties use classical computers for verification, thereby enhancing security and trust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cryptographic methods are used in PKI systems, then ease of operation is maintained, but security and reliability are compromised due to vulnerability to quantum computing attacks
Solution Approach 1:
The patent replaces traditional classical cryptographic mechanisms with quantum cryptographic mechanisms. Specifically, it uses quantum key distribution (QKD) to generate and distribute cryptographic keys, and quantum digital signatures to sign certificates. This substitution leverages quantum mechanical principles (such as superposition and entanglement) to achieve security that is fundamentally resistant to both classical and quantum computational attacks, thereby improving reliability without significantly increasing operational complexity for end users.
2Reliability
If quantum computers are used to sign certificates, then reliability and security are improved, but device complexity increases
Solution Approach 1:
The patent segments the PKI system into distinct quantum and classical components. The quantum computer is dedicated solely to performing quantum digital signature operations (signing certificates), while classical computers handle certificate verification, storage, and distribution. This segmentation allows the complex quantum functionality to be isolated to a specialized device, reducing the complexity burden on the overall system and allowing each component to be optimized independently.
Solution Approach 2:
The patent introduces quantum-generated cryptographic keys and quantum digital signatures as intermediary elements between the quantum computer and the classical PKI infrastructure. These quantum cryptographic artifacts serve as mediators that bridge the quantum and classical domains, allowing the quantum computer to enhance security without requiring classical computers to perform complex quantum operations. The intermediary quantum cryptographic protocols enable secure interaction between systems of different computational paradigms.
3Reliability
If quantum digital signature algorithms are implemented, then security against counterfeit certificates is improved, but productivity and processing speed may be reduced
Solution Approach 1:
The patent implements preliminary action by pre-distributing quantum-generated public keys and quantum digital signature verification algorithms to all relying parties before they are needed for verification. The quantum computer pre-generates cryptographic key pairs and distributes the public keys through secure quantum channels. This preliminary setup ensures that when certificate verification is needed, relying parties already have the necessary quantum cryptographic materials cached and ready, minimizing real-time processing delays and improving verification speed.
Data Source
AI summary
The present disclosure is directed to systems, methods, and non-transitory computer-readable media for generating a first signature on a first certificate of the plurality of certificates using a first digital signature generation algorithm based on a first private key. The first signature is validated by a relying party device using a first public key in certificate chain validation. The first public key and the first private key form a first public/private key pair. A second signature is generated on a second certificate of the plurality of certificates using a second digital signature generation algorithm based on a second private key. The second signature is validated by the relying party device using a second public key in the certificate chain validation. The second public key and the second private key form a second public/private key pair. The relying party device uses a third public key in the second certificate to verify a third signature on signed data. The relying party device includes a classical computer having at least one processor that processes bits.