facezk-core/dist/biometric/fuzzy-hash.d.ts

ZKP-AI Proof of Humanity: Live Selfie Check with Biometric Template Extraction and Fuzzy Hashing

/**
 * Fuzzy Biometric Hashing
 * ZK-AI Proof of Humanity: Fuzzy-Tolerant Biometric Template Comparison
 */
import type { BiometricTemplate } from '../types';
/** Fuzzy hash configuration */
export interface FuzzyHashConfig {
    /** Number of hash bits */
    hashBits: number;
    /** Similarity threshold (0-1) */
    similarityThreshold: number;
    /** Number of hash functions */
    numHashFunctions: number;
    /** Feature normalization method */
    normalization: 'l2' | 'minmax' | 'zscore';
}
/** Default fuzzy hash configuration */
export declare const defaultFuzzyConfig: FuzzyHashConfig;
/** Fuzzy hash result */
export interface FuzzyHashResult {
    /** Fuzzy hash string */
    hash: string;
    /** Hash bits array */
    bits: number[];
    /** Confidence score */
    confidence: number;
    /** Template features used */
    features: number[];
}
/**
 * Generate fuzzy hash from biometric template
 */
export declare function generateFuzzyHash(template: BiometricTemplate, config?: FuzzyHashConfig): FuzzyHashResult;
/**
 * Compare two fuzzy hashes for similarity
 */
export declare function compareFuzzyHashes(hash1: FuzzyHashResult, hash2: FuzzyHashResult, _config?: FuzzyHashConfig): {
    similarity: number;
    match: boolean;
};
/**
 * Generate fuzzy-tolerant biometric ID (Sₐ)
 * This replaces the original generateBiometricId function
 */
export declare function generateFuzzyBiometricId(template: BiometricTemplate, config?: FuzzyHashConfig): string;
/**
 * Compare two biometric templates for similarity
 */
export declare function compareBiometricTemplates(template1: BiometricTemplate, template2: BiometricTemplate, config?: FuzzyHashConfig): {
    similarity: number;
    match: boolean;
};
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