Privacy-Preserving Location Verification

The Open Location Proof (OLP) protocol combines zero-knowledge proofs with decentralized verification for secure, private, and non-repudiable location certificates.

Protocol Overview

A revolutionary approach to location verification using advanced cryptography

1. Zero-Knowledge Location Proof

Generate cryptographic proof of location without revealing exact coordinates using Bulletproofs and Pedersen commitments.

LocationProof = ZKP(location, radius)

2. Witness Verification

Decentralized network validates proof through BLS signature aggregation and threshold signatures.

Verification = Threshold(WitnessSignatures)

3. Non-Repudiable Certificate

Generate tamper-proof certificate using Merkle trees and aggregate signatures.

Certificate = MerkleProof(AggregateSignature)
User Device Witness Network Location Commitment ZK Range Proof Witness Verification Threshold Signatures Location Certificate Non-repudiable Proof 1. Generate 2. Validate 3. Request Verification 4. Witness Signatures 5. Generate Certificate

Technical Specifications

Advanced cryptographic foundations ensuring privacy and security

Cryptographic Primitives

  • Zero-Knowledge Range Proofs (Bulletproofs)
  • Pedersen Commitments
  • BLS Signature Aggregation
  • Merkle Tree Certificates

Security Level: 256-bit

Post-Quantum Ready: Yes

Protocol Parameters

{
  "security": {
    "zkp_bits": 256,
    "min_witnesses": 3,
    "consensus_threshold": "2/3",
    "max_verification_time": "2s"
  },
  "privacy": {
    "location_precision": "100m",
    "witness_anonymity": true,
    "data_retention": "none"
  }
}

Performance Metrics

Proof Generation

~500ms

Verification Time

~200ms

Proof Size

~2KB

Network Overhead

~5KB

Security Guarantees

  • Perfect Forward Secrecy
  • Post-Quantum Readiness
  • Byzantine Fault Tolerance
  • Sybil Attack Resistance

Formal Security Proofs

Available in the research paper

Integration Guide

Simple API for developers, powerful privacy for users

// Install the package
npm install @olp/client

// Initialize client
const olp = require('@olp/client');
const client = new olp.Client({
    witnessCount: 3,
    privacyLevel: 'high'
});

// Generate location proof
const proof = await client.generateProof({
    location: coordinates,
    radius: 100  // meters
});

// Verify proof
const isValid = await olp.verify(proof);

Simple Integration

Just a few lines of code to add privacy-preserving location verification to your app.

Built-in Privacy

Zero-knowledge proofs and encryption handled automatically.

Real-time Verification

Instant proof generation and verification through our witness network.

Research Paper

"Open Location Proof (OLP): A Privacy-Aware Protocol for Non-Repudiable Location and Presence Verification"

  • Novel cryptographic constructions
  • Formal security proofs
  • Performance analysis
  • Real-world applications
Download PDF

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