One-Step Digital Signature Trust for Self-Signed Certificates
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Solution Overview
Problem
Current software applications poorly handle digitally signed documents with self-signed certificates or those not rooted in a Certificate Authority, leading to unknown signature status issues, which undermine trust in the signer and the software providing the document.
Innovation Solution
A method and apparatus for one-step signature trust that validates a document's integrity and offers recipients the option to establish trust in digital certificates, adding them to their list of trusted certificates if chosen, thereby resolving trust issues related to self-signed or untrusted certificates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital signatures use self-signed certificates or certificates not rooted in a Certificate Authority, then the signer has flexibility and control over their own identity verification, but the recipient cannot verify the signature status, leading to unknown signature status and loss of trust
Solution Approach 1:
The patent introduces a software application as an intermediary that mediates between the self-signed certificate and the recipient. The application acts as a trusted mediator that can verify and validate self-signed certificates, presenting them to the recipient with explicit trust indicators. This resolves the contradiction by providing a intermediary layer that bridges the gap between flexible self-signed certificates and reliable verification.
Solution Approach 2:
The patent segments the trust verification process into distinct components: certificate validation, trust status determination, and presentation to the recipient. By separating these functions, the system can handle self-signed certificates differently from CA-signed certificates, applying appropriate verification methods to each segment while maintaining overall system reliability.
2Loss of information
If current software applications present error messages for untrusted certificates, then the recipient is informed of the trust issue, but the recipient receives little or no guidance on how to resolve it, requiring manual intervention
Solution Approach 1:
The patent implements self-service by enabling the recipient to directly interact with the software application to establish trust in self-signed certificates. The application provides a user-friendly interface where recipients can review certificate details and explicitly trust them with a single action. This eliminates the need for manual intervention or complex resolution processes, allowing users to self-resolve trust issues easily.
Solution Approach 2:
The patent incorporates feedback mechanisms that provide the recipient with clear information about the trust status and the actions taken. When a recipient trusts a self-signed certificate, the system provides immediate feedback confirming the trust establishment and updating the signature status. This feedback loop guides the recipient through the trust resolution process without requiring external assistance.
3Reliability
If digital certificates are not trusted on the recipient's machine, then security is maintained by not accepting unverified signatures, but the legitimate use of self-signed documents is prevented, undermining trust in the signer
Solution Approach 1:
The patent implements dynamic trust management where the trust status of self-signed certificates can change based on user actions. Initially, self-signed certificates are treated with caution (security-focused), but when a recipient explicitly trusts them, the system dynamically adjusts to accept these certificates. This dynamic approach allows the system to adapt between security verification and acceptance of self-signed documents based on real-time user decisions.
Solution Approach 2:
The patent changes the trust parameter for self-signed certificates from a fixed default state to a flexible state that can be modified by user input. The system maintains a parameter that tracks whether a self-signed certificate has been trusted, allowing it to switch between verification modes. This parameter change enables the system to both maintain security standards and accept legitimate self-signed documents when appropriate.
Data Source
AI summary
A computer implemented method and apparatus for one-step signature trust of digitally signed documents comprising determining whether a digital signature is otherwise valid except for a lack of trust in a digital certificate; offering a recipient an option to establish trust in the digital certificate; and adding the digital certificate to a list of the recipient's trusted digital certificates when recipient opts to establish trust.