Digital Certificate Generation via Public Key Hash Comparison
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Solution Overview
Problem
Generating digital certificates with unique keys in both online and offline environments is challenging, as existing systems struggle to ensure key uniqueness and secure transmission of encrypted private keys.
Innovation Solution
A method involving the computation of public key hashes, comparison with previously generated hashes, and generation of digital certificates only if the hash is unique, along with secure encryption and verification processes to prevent key duplication and ensure secure transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If key pairs and certificates are generated in both online and offline environments, then certificate generation flexibility and security are improved, but ensuring key uniqueness across both environments becomes more difficult
Solution Approach 1:
The system performs preliminary hashing of public keys before certificate generation and stores these hashes in a database. This preliminary action enables efficient uniqueness verification by comparing hashes rather than full public keys, resolving the contradiction between security through comprehensive verification and operational complexity.
Solution Approach 2:
The patent introduces a hash function as an intermediary mechanism between key generation and uniqueness verification. By transforming public keys into fixed-length hashes for comparison, the system simplifies the verification process while maintaining security, as the hash function provides a reliable one-way transformation that preserves uniqueness properties.
2Reliability
If hash comparison is performed for every key generation, then key uniqueness is guaranteed, but processing time and computational resources increase
Solution Approach 1:
The system changes the parameter being compared from full public keys to fixed-length hash values. This parameter transformation maintains the uniqueness guarantee while significantly reducing comparison time and computational resources, as hashing a public key produces a fixed-size representation that is much faster to compare than the original key data.
Solution Approach 2:
The patent replaces direct public key comparison with hash-based comparison. This substitution uses cryptographic hashing mechanics to achieve the same uniqueness verification goal more efficiently, leveraging the properties of hash functions to provide both speed and reliability in the verification process.
3Reliability
If encrypted private keys are transmitted securely, then security is improved, but transmission complexity and verification requirements increase
Solution Approach 1:
The system implements feedback mechanisms where the CA verifies the encrypted private key by computing the hash of its corresponding public key and comparing it against stored hashes. This feedback loop ensures transmission security and integrity without requiring complex verification protocols, as the hash comparison provides a simple yet reliable verification method.
Data Source
AI summary
A system for generating unique digital certificates is provided that generates computed hashes public keys and compares them. The system method computes a hash of a public key, compares the computed hash of the public key with hashes of public keys previously generated, generates the digital certificate having the public key and a device identifier only if the computed hash of the public key does not match any of the hashes of public keys previously generated, and provides the digital certificate.