Compliance Manager Guardian

Purpose & Scope

Apply this skill when modifying

core/security/compliance-manager.js

The Compliance Manager provides:

• PCI-DSS data protection (card data masking, encryption)
• GDPR compliance (pseudonymization, consent management, data minimization)
• PSD2 compliance (Strong Customer Authentication)
• SOX audit trail requirements
• HIPAA health data protection
• Multi-regulation validation framework
• Secure audit logging

Non-Negotiables (Never Do)

Compliance Validators

• Never disable or bypass compliance validators.
• Never weaken validation rules (for example, making required checks optional).
• Never skip validation for "trusted" sources.
• Never add bypass flags or debug modes that skip compliance.

PCI-DSS Rules

• Never log these PCI fields (even in debug mode):

  • cvv

    ,

    cvv2

    ,

    cvc

    ,

    cvc2

    ,

    cid

    ,

    cav2

  • pin

    ,

    pinBlock

  • track1

    ,

    track2

    ,

    magneticStripe

• Never weaken card masking:
  • Must show only first 6 and last 4 digits.
  • Middle digits must be masked with

    *

    .
• Never reduce encryption below AES-256-GCM.
• Never store CVV/PIN after authorization.

GDPR Rules

• Never process personal data without consent check.
• Never skip pseudonymization for personal identifiers.
• Never retain personal data beyond retention period.
• Never disable data minimization for analytics.

PSD2 Rules

• Never reduce SCA requirements below 2 factors.
• Never bypass SCA for amounts over threshold.
• Never skip transaction monitoring for high-value transactions.
• Never disable cumulative amount tracking.

Audit Logging

• Never skip audit logging for sensitive operations.
• Never delete or modify existing audit entries.
• Never log sensitive data in audit trails (mask first).
• Never disable audit persistence.

Security Rollback

• Never rollback security fixes without security team approval.
• Never lower security levels in production.

Required Patterns (Must Follow)

Card Number Masking

// Must mask showing only first 6 and last 4
maskCardNumber(cardNumber) {
    const cleaned = cardNumber.replace(/\D/g, '');
    const first6 = cleaned.substring(0, 6);
    const last4 = cleaned.substring(cleaned.length - 4);
    const masked = '*'.repeat(cleaned.length - 10);
    return `${first6}${masked}${last4}`;
}
// Example: 4111111111111111 -> 411111******1111

Data Encryption

// Must use AES-256-GCM
encryptSensitiveData(data) {
    const algorithm = 'aes-256-gcm';  // Do not change
    const key = process.env.ENCRYPTION_KEY;
    if (!key) throw new Error('ENCRYPTION_KEY is required');

    // 12-byte IV is recommended for GCM
    const iv = crypto.randomBytes(12);

    // Prefer @onasis/security-sdk for key handling if available
    // If ENCRYPTION_KEY is a passphrase, derive a 32-byte key via scrypt.
    const keyBuf = (key.length === 64 && /^[0-9a-f]+$/i.test(key))
        ? Buffer.from(key, 'hex')
        : crypto.scryptSync(key, 'onasis-gateway', 32);

    const cipher = crypto.createCipheriv('aes-256-gcm', keyBuf, iv);
    cipher.setAAD(Buffer.from('compliance-encryption'));

    const plaintext = typeof data === 'string' ? data : JSON.stringify(data);
    const ciphertext = Buffer.concat([cipher.update(plaintext, 'utf8'), cipher.final()]);
    const authTag = cipher.getAuthTag();

    return {
        encrypted: ciphertext.toString('base64'),
        iv: iv.toString('hex'),
        authTag: authTag.toString('hex'),
        algorithm
    };
}

Strong Customer Authentication

// Must require 2+ factors
validateSCA(data) {
    const factors = [];

    if (data.password || data.pin) factors.push('knowledge');
    if (data.deviceId || data.token) factors.push('possession');
    if (data.biometric || data.fingerprint) factors.push('inherence');

    return factors.length >= 2;  // PSD2 requirement
}

Defense in Depth

// Must apply all applicable protections
enforceDataHandling(serviceId, data, operation) {
    let processedData = { ...data };

    if (service?.compliance?.pci) {
        processedData = this.applyPCIProtections(processedData, operation);
    }
    if (service?.compliance?.gdpr) {
        processedData = this.applyGDPRProtections(processedData, operation);
    }
    if (service?.compliance?.psd2) {
        processedData = this.applyPSD2Protections(processedData, operation);
    }

    return processedData;
}

Audit Entry Creation

// Must create audit entry for all compliance events
logAuditEntry(action, details) {
    const entry = {
        timestamp: new Date(),
        action,
        details,
        id: crypto.randomUUID()
    };

    this.auditLog.push(entry);
    this.emit('audit:logged', entry);
    this.persistAuditEntry(entry);  // Must persist
}

Prohibited Fields Registry

Integration Points

enforceDataHandling()

compliance_violations_total

audit.compliance_log

Compliance Validation Checklist

Before deploying changes:

• Card data properly masked (first 6, last 4 only).
• CVV/PIN never logged or stored.
• Encryption uses AES-256-GCM.
• SCA requires 2+ factors.
• Audit entries created for all operations.
• GDPR consent check in place.
• Data minimization applied for analytics.
• No PII in metric labels.
• Audit log persisted to secure storage.