Privacy Certification & Anonymity Audit

// Privacy Certification and Anonymity Audit System
class PrivacyCertificationSystem {
    constructor() {
        this.certificationLevels = {
            basic: {
                minScore: 70,
                title: "Bitcoin Privacy Fundamentals",
                description: "Demonstrates understanding of basic privacy principles",
                xpReward: 200
            },
            intermediate: {
                minScore: 85,
                title: "Privacy Practitioner",
                description: "Proficient in implementing privacy practices",
                xpReward: 300
            },
            advanced: {
                minScore: 95,
                title: "Privacy Expert",
                description: "Expert level privacy implementation and knowledge",
                xpReward: 500
            }
        };
        
        this.auditCategories = {
            addressManagement: {
                weight: 25,
                checks: [
                    "No address reuse detected",
                    "Fresh address generation implemented",
                    "Proper address type usage (Bech32 preferred)",
                    "Address gap management"
                ]
            },
            transactionPatterns: {
                weight: 20,
                checks: [
                    "No round number patterns",
                    "Varied transaction timing",
                    "No predictable spending patterns",
                    "Proper change handling"
                ]
            },
            walletHygiene: {
                weight: 20,
                checks: [
                    "Separate wallets for different purposes",
                    "Proper labeling without sensitive info",
                    "Secure backup practices",
                    "Wallet configuration optimized"
                ]
            },
            networkPrivacy: {
                weight: 15,
                checks: [
                    "Tor or VPN usage",
                    "Proper proxy configuration",
                    "No network leaks detected",
                    "Random transaction broadcasting"
                ]
            },
            knowledgeAssessment: {
                weight: 20,
                checks: [
                    "Understanding of privacy threats",
                    "Knowledge of mixing techniques",
                    "Familiarity with privacy tools",
                    "Awareness of common pitfalls"
                ]
            }
        };
    }
    
    conductPrivacyAudit(auditData) {
        const auditResults = {
            timestamp: new Date(),
            categories: {},
            overallScore: 0,
            certificationLevel: null,
            recommendations: [],
            criticalIssues: []
        };
        
        let weightedScore = 0;
        let totalWeight = 0;
        
        // Audit each category
        Object.entries(this.auditCategories).forEach(([category, config]) => {
            const categoryResult = this.auditCategory(category, auditData[category], config.checks);
            auditResults.categories[category] = categoryResult;
            
            weightedScore += categoryResult.score * config.weight;
            totalWeight += config.weight;
            
            // Collect recommendations and critical issues
            if (categoryResult.criticalIssues.length > 0) {
                auditResults.criticalIssues.push(...categoryResult.criticalIssues);
            }
            auditResults.recommendations.push(...categoryResult.recommendations);
        });
        
        auditResults.overallScore = Math.round(weightedScore / totalWeight);
        auditResults.certificationLevel = this.determineCertificationLevel(auditResults.overallScore);
        
        return auditResults;
    }
    
    auditCategory(category, data, checks) {
        const result = {
            category: category,
            score: 0,
            checks: {},
            recommendations: [],
            criticalIssues: []
        };
        
        let passedChecks = 0;
        
        checks.forEach(check => {
            const checkResult = this.performCheck(category, check, data);
            result.checks[check] = checkResult;
            
            if (checkResult.passed) {
                passedChecks++;
            } else {
                if (checkResult.severity === "critical") {
                    result.criticalIssues.push(checkResult.message);
                } else {
                    result.recommendations.push(checkResult.message);
                }
            }
        });
        
        result.score = Math.round((passedChecks / checks.length) * 100);
        return result;
    }
    
    performCheck(category, check, data) {
        // Simplified check implementation
        // In a real system, this would contain actual audit logic
        
        const checkImplementations = {
            addressManagement: {
                "No address reuse detected": () => ({
                    passed: !data?.addressReuse || data.addressReuse.length === 0,
                    severity: "critical",
                    message: "CRITICAL: Address reuse detected - immediate action required"
                }),
                "Fresh address generation implemented": () => ({
                    passed: data?.freshAddressGeneration === true,
                    severity: "high",
                    message: "Implement automatic fresh address generation"
                })
            },
            transactionPatterns: {
                "No round number patterns": () => ({
                    passed: data?.roundNumbers === 0 || data.roundNumbers < data.totalTransactions * 0.2,
                    severity: "medium",
                    message: "Avoid round number transactions to prevent pattern recognition"
                })
            },
            networkPrivacy: {
                "Tor or VPN usage": () => ({
                    passed: data?.torUsage === true || data?.vpnUsage === true,
                    severity: "high",
                    message: "Use Tor or VPN for Bitcoin transactions"
                })
            }
        };
        
        const categoryChecks = checkImplementations[category];
        if (categoryChecks && categoryChecks[check]) {
            return categoryChecks[check]();
        }
        
        // Default check result
        return {
            passed: true,
            severity: "low",
            message: `Check '${check}' completed`
        };
    }
    
    determineCertificationLevel(score) {
        if (score >= this.certificationLevels.advanced.minScore) {
            return "advanced";
        } else if (score >= this.certificationLevels.intermediate.minScore) {
            return "intermediate";
        } else if (score >= this.certificationLevels.basic.minScore) {
            return "basic";
        } else {
            return "not_qualified";
        }
    }
    
    generateCertificationReport(auditResults) {
        const level = this.certificationLevels[auditResults.certificationLevel] || this.certificationLevels.basic;
        
        return {
            certification: {
                level: auditResults.certificationLevel,
                title: level.title,
                description: level.description,
                score: auditResults.overallScore,
                xpReward: level.xpReward,
                issuedDate: auditResults.timestamp
            },
            summary: {
                overallScore: `${auditResults.overallScore}/100`,
                criticalIssues: auditResults.criticalIssues.length,
                recommendations: auditResults.recommendations.length,
                nextSteps: this.generateNextSteps(auditResults)
            },
            detailedResults: auditResults.categories,
            improvementPlan: this.generateImprovementPlan(auditResults),
            badge: this.generateBadge(auditResults.certificationLevel)
        };
    }
    
    generateNextSteps(auditResults) {
        const steps = [];
        
        if (auditResults.criticalIssues.length > 0) {
            steps.push("URGENT: Address all critical issues immediately");
        }
        
        if (auditResults.overallScore < 85) {
            steps.push("Focus on high-priority recommendations");
            steps.push("Re-audit after implementing improvements");
        }
        
        if (auditResults.overallScore >= 95) {
            steps.push("Congratulations! Consider mentoring others");
            steps.push("Stay updated on new privacy techniques");
        }
        
        return steps;
    }
    
    generateImprovementPlan(auditResults) {
        return {
            immediate: auditResults.criticalIssues,
            shortTerm: auditResults.recommendations.filter((rec, index) => index < 5),
            longTerm: [
                "Regular privacy audits (quarterly)",
                "Stay updated on privacy tools and techniques",
                "Share knowledge with privacy community"
            ]
        };
    }
    
    generateBadge(level) {
        const badges = {
            basic: "🥉 Bitcoin Privacy Fundamentals",
            intermediate: "🥈 Privacy Practitioner",
            advanced: "🥇 Privacy Expert",
            not_qualified: "📚 Keep Learning"
        };
        
        return badges[level] || badges.not_qualified;
    }
    
    scheduleReaudit(auditResults) {
        const intervals = {
            advanced: "6 months",
            intermediate: "3 months",
            basic: "1 month",
            not_qualified: "2 weeks"
        };
        
        const level = auditResults.certificationLevel;
        const nextAuditDate = new Date();
        
        if (level === "advanced") {
            nextAuditDate.setMonth(nextAuditDate.getMonth() + 6);
        } else if (level === "intermediate") {
            nextAuditDate.setMonth(nextAuditDate.getMonth() + 3);
        } else if (level === "basic") {
            nextAuditDate.setMonth(nextAuditDate.getMonth() + 1);
        } else {
            nextAuditDate.setDate(nextAuditDate.getDate() + 14);
        }
        
        return {
            recommendedInterval: intervals[level],
            nextAuditDate: nextAuditDate,
            reminderSettings: "Enable monthly privacy check reminders"
        };
    }
}

// Usage example
const certSystem = new PrivacyCertificationSystem();
const mockAuditData = {
    addressManagement: {
        addressReuse: [], // No reuse
        freshAddressGeneration: true
    },
    transactionPatterns: {
        roundNumbers: 1,
        totalTransactions: 20
    },
    networkPrivacy: {
        torUsage: true,
        vpnUsage: false
    }
};

const auditResults = certSystem.conductPrivacyAudit(mockAuditData);
const certificationReport = certSystem.generateCertificationReport(auditResults);
const reauditSchedule = certSystem.scheduleReaudit(auditResults);

console.log("Certification Report:", certificationReport);
console.log("Reaudit Schedule:", reauditSchedule);