Biometric Signature System Using Encrypted Hashes
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Solution Overview
Problem
Current electronic signature systems lack assurance of authenticity, as traditional signatures do not guarantee their own validity, and physical signatures on paper are prone to degradation and maintenance issues.
Innovation Solution
A biometric signature system that captures and stores user biometric data, generates digital artifacts, and encrypts document hashes using private keys to create encrypted hashes stored in a database, allowing for later authentication of signatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electronic signatures are used, then the signing process is simple and quick, but the authenticity and validity of the signature cannot be guaranteed
Solution Approach 1:
The patent combines biometric authentication with electronic signature functionality into a unified system. The biometric sensor, digital artifact generation, private key creation, and signature encryption are integrated into a single cohesive process that simultaneously provides identity verification and signature authentication, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The system creates a composite authentication mechanism by combining multiple cryptographic elements (digital artifacts, private keys, encrypted hashes) with biometric data. This composite approach layers multiple security functions together to ensure signature authenticity while maintaining a unified system architecture.
2Reliability
If physical paper signatures are used, then the signature can be visually verified, but the physical document is prone to degradation and requires maintenance
Solution Approach 1:
The patent replaces the mechanical/physical signature system with a digital cryptographic system. Instead of relying on physical ink on paper that degrades over time, the system uses digital artifacts, cryptographic hashing, and encrypted private keys to create a signature that is both visually verifiable and permanently durable in digital form.
Solution Approach 2:
The system creates a digital copy of the signature process that preserves all authentication information in an immutable format. The encrypted hash and private keys serve as a permanent digital replica of the signing event, eliminating the degradation issues inherent in physical copies while maintaining verification capability.
3Reliability
If multiple private keys are generated from biometric data, then the security of the signature is enhanced, but the computational overhead increases
Solution Approach 1:
The patent performs preliminary actions by pre-generating multiple private keys from biometric data during the enrollment phase and pre-computing the encrypted hashes. This shifts the computational burden to an initial setup stage rather than requiring intensive computation during every signing operation, thereby enhancing security while managing energy consumption during actual use.
Data Source
AI summary
A method of biometric signature. The method comprises receiving a biometric data input from a user and generating a digital artifact from the biometric data input. N private keys are generated from the digital artifact. Upon receiving input of a document, a hash of the document is generated. In response to receiving a signature from the user on the document, the hash is encrypted with each private key to create an encrypted hash with N encrypted keys. The encrypted hash and N encrypted keys are stored in a database.