SCVP Server Visual Trust Indicators for Email Identity Validation

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Solution Overview

Problem

Conventional email validation protocols do not provide a clear indication of the degree of trust associated with a public key certificate, limiting the ability of recipients to assess the authenticity of digital signatures.

Innovation Solution

A system utilizing the Server-based Certificate Validation Protocol (SCVP) to validate public key certificates by mapping certificate policies to graphical representations of trust levels, allowing recipients to understand the level of assurance associated with digital signatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If conventional certificate validation protocols are used, then digital signature validity can be determined, but the degree of trust associated with the certificate is not indicated to the recipient

Engineering Contradiction:
Improvetrust degree informationVSAvoidvalidation system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary component that translates certificate policy information into visual trust indicators. This intermediary layer processes the certificate validation data and presents it in a simplified visual format (color-coded icons, trust meters) without requiring the email client itself to become complex. The intermediary handles the complexity of interpreting certificate policies while keeping the user interface simple and intuitive.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs color changes as a visual mechanism to indicate different levels of trust associated with digital certificates. By mapping certificate policy validation results to color-coded indicators (e.g., green for high trust, yellow for medium trust, red for low trust), the system communicates the degree of trust in an intuitive and immediately recognizable way, eliminating the need for complex textual explanations while preserving all necessary information.

Inventive Principle:
Principle #32Color changes

2Measurement precision

If binary trust indication is provided, then validation simplicity is maintained, but recipients cannot assess the level of assurance of digital signatures

Engineering Contradiction:
Improvetrust assessment precisionVSAvoidvalidation interpretation ease
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent transitions from a one-dimensional binary trust indication (trusted/not trusted) to a multi-dimensional visual representation that conveys multiple aspects of trust simultaneously. By adding visual dimensions such as color intensity, icon size, trust meter levels, and hierarchical icon arrangements, the system provides precise measurement of trust assurance while maintaining ease of interpretation through intuitive visual metaphors that humans naturally understand.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Loss of information

If detailed certificate policy information is displayed, then complete trust assessment is enabled, but user interface complexity increases

Engineering Contradiction:
Improvecertificate policy informationVSAvoiduser interface complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts the essential trust assessment information from detailed certificate policy data and presents only the most relevant aspects to users. By separating the core trust indicators (visual icons, color codes, trust meters) from the underlying complex certificate policy specifications, the system provides complete trust assessment information in a simplified format. The detailed policy information remains available for those who need it, but the primary interface presents only the essential visual indicators.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS9438428B2Method and system for email identity validation
Publication Date: 2016.09.06 CERTIPATH
  • US9438428B2 patent drawing
  • US9438428B2 patent drawing
  • US9438428B2 patent drawing

AI summary

The present invention uses Server-based Certificate Validation Protocol (SCVP) to validate the public key digital signature certificate of an email signer (or the public key encryption certificate of an email recipient) by using a modified SCVP server such that a trustworthiness indicator based on certificate policies is included in an SCVP server response that maps the certificate policies asserted in the public key certificate of the email signer (or email recipient(s)) to graphically represent the degree of trust that can be attributed to the identities bound to public key certificates containing one or more certificate policies. The graphical representation of a trust level may appear directly in an email client and is based on the level of trust attributable to the binding between the public key distributed via a public key certificate (for signing or encryption) and the identity/attributes of the “subject” or “entity” contained in that certificate.