Self-Authenticating Digital Identity via Cryptographic Dual-Signing

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Solution Overview

Problem

Existing digital identity systems are inefficient and lack transparency, as they often require third-party involvement to verify identities, compromising user privacy and allowing unauthorized entities to access sensitive information, especially in cross-border transactions.

Innovation Solution

A self-authenticating digital identity system where user-verified identity information and public keys are cryptographically dual-signed by the user and identity provider, allowing entities to verify identities without direct third-party involvement, maintaining privacy and providing assurance on verification methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If third-party intermediaries are involved to verify identities, then identity verification security is improved, but user privacy is compromised and system complexity increases

Engineering Contradiction:
Improveidentity verification securityVSAvoiduser privacy
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The patent extracts the essential verification function from the third-party intermediary and embeds it directly into the digital identity credential through cryptographic signatures. The identity provider's verification is taken out of the intermediary's control and placed into the user's possession via the signed credential, eliminating the need for continuous third-party involvement while maintaining verification security and protecting privacy.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables self-service by allowing the user's digital identity credential to autonomously verify its own authenticity through cryptographic proof. The credential contains embedded signatures that allow relying parties to verify identity without contacting the identity provider, making the verification system self-sufficient and eliminating privacy-compromising intermediaries.

Inventive Principle:
Principle #25Self-service

2Reliability

If third-party intermediaries are involved to verify identities, then identity verification security is improved, but device complexity increases

Engineering Contradiction:
Improveidentity verification securityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the verification logic from complex intermediary systems and embeds it into simple cryptographic signatures within the digital credential. This reduces system complexity by replacing multi-party verification infrastructure with self-contained cryptographic proof that can be verified by any standard cryptographic library.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent creates a self-contained copy of the verification authority's signature within the user's credential. Instead of requiring access to the identity provider's systems, the verified identity information is copied into the credential with embedded cryptographic proof, eliminating complex intermediary infrastructure.

Inventive Principle:
Principle #26Copying

3Reliability

If traditional identity systems are used, then third-party verification is available, but transaction efficiency decreases

Engineering Contradiction:
Improveverification assuranceVSAvoidtransaction efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent performs verification in advance during credential issuance. The identity provider signs the verified identity information beforehand, creating a pre-verified credential that can be instantly validated without requiring real-time intermediary involvement, thus improving transaction efficiency while maintaining verification assurance.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The credential performs self-verification through embedded cryptographic signatures. Relying parties can independently verify the credential's authenticity without contacting the identity provider, eliminating verification delays and improving transaction efficiency while maintaining the same level of verification assurance.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11558201B2Self-authenticating digital identity
Publication Date: 2023.01.17 BANCO BILBAO VIZCAYA ARGENTARIA
  • US11558201B2 patent drawing
  • US11558201B2 patent drawing
  • US11558201B2 patent drawing

AI summary

A method of creating and applying a self-authenticating digital identity for a user having an identity is described.