zkPass
zkPass Developer's Guide
zkPass Developer's Guide
  • ⛩ī¸Introduction
  • ZKPASS OVERVIEW
    • 🏛ī¸Architecture
    • 🧱zkPass Components
    • 🤝Trust Models
    • 🚚Deployment
      • Public-Cloud Hosting
      • Private-Cloud Hosting
      • On-Premise Hosting
    • đŸŽ¯SDK Objectives
    • 🔑API Key
  • zkPass Modules
    • ☁ī¸DVR
      • đŸ—ģHigh Level View
      • 🗝ī¸Key Concepts
        • User Data
        • DVR Info
        • zkPass Proof
      • đŸ‘ĨDVR Client Roles
        • Data Issuer
          • Providing User Data Retrieval API
        • Data Holder
          • 1. Retrieving the DVR
          • 2. Retrieving the User Data
          • 3. Generating the Proof
          • 4. Verifying the Proof
        • Proof Verifier
          • 1. Providing DVR Retrieval API
          • 2. Providing Proof Verification API
      • 🔎DVR Query
        • Building Query Engine
        • Processing Query
        • Query Grammar
      • 🏗ī¸Integration Guidelines
      • 🌊DVR Workflows
  • SDK Tutorial
    • Typescript
      • Running Code
      • Code Snippet
      • Directory Structure
    • Rust
      • Running Code
      • Code Snippet
      • Directory Structure
  • API Reference
    • Typescript
      • Classes
        • Class: DvrModuleClient
      • Functions
        • Functions: ffiHelper
        • Functions: jwtHelper
        • Functions: publicKeyOptionUtils
      • Type Aliases
        • Types
        • Types: ffiType
      • Interfaces
        • Interfaces
      • Constants
        • Constants
        • Enums
      • Errors
    • Rust
      • Building Rust doc
    • RESTful API
      • Overview
      • Endpoints
        • Generate Proof
      • Utilities
        • Generate Key Pair
        • Sign User Data and DVR
        • Encrypt User Data and DVR
      • Errors
  • Glossary
    • DVR
    • User Data
    • ZKP
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  1. zkPass Modules
  2. DVR
  3. DVR Query

Processing Query

PreviousBuilding Query EngineNextQuery Grammar

Last updated 11 months ago

Processing the DVR Query

zkPass Service processes the DVR query contained in the DVR Info and the user data referenced by the query in a pipeline flow, as depicted below.

  1. Initialization of the Data Verification Request(DVR) The proof verification begins by creating a Data Verification Request (DVR). This record is essential as it holds the specific request or "query" that needs to be verified.

  2. Inputs for Verification There are two key pieces of information that the DVR Query Engine requires to perform verification:

    • The Query: This is the request for information or action that needs to be checked.

    • The User Data: This refers to any information related to the user that the query will use or check against.

  3. Processing by the DVR Query Engine The DVR Query Engine is the powerhouse where the actual verification takes place. This engine operates within the Zero-Knowledge Virtual Machine (ZKVM), a secure environment designed for processing these queries.

  4. Results of the Verification Once the query has been processed, there are two results produced:

    • The Zero-Knowledge Proof (ZK Proof) This is a verification result that proves the query was processed correctly without revealing any private details.

    • The Query Result This is the outcome of the query after it has been processed.

  5. Packaging the Results Both the ZK proof and the query result are bundled into a single package known as the zkPass Proof object. This object can then be used to confirm the integrity and accuracy of the query process without exposing any sensitive information.

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