NFSSecurity

---

🚨 Overview

NFSSecurity is a modern, modular, and production-ready Swift framework for iOS and macOS, providing a comprehensive suite of security tools for app developers. It covers encryption, hashing, biometrics, keychain, integrity, jailbreak/debugger/simulator detection, network security, random generation, screen shielding, and more—all with a clean, extensible API and a beautiful SwiftUI example app.

• Swift-first: Built for Swift 6, fully concurrency-safe, and designed for modern app architectures.
• Modular: Use only what you need. Each feature is a separate, testable component.
• Extensible: Easily customize or extend any part of the framework.
• Battle-tested: Follows best practices and leverages Apple's CryptoKit, LocalAuthentication, and Security frameworks.

---

✨ Features

• Encryption: AES-128, AES-256, ChaCha20 (with IV/nonce support)
• Hashing: MD5, SHA-1, SHA-256, SHA-512, HMAC-SHA256, HMAC-SHA512
• Biometric Authentication: Face ID, Touch ID, fallback to device passcode
• Keychain Management: Securely store, retrieve, update, and delete sensitive data
• Jailbreak, Debugger, Simulator, Reverse Engineering Detection
• App Integrity Checks: Code signing, bundle, entitlements, file hashes, tampering
• Network Security: Proxy/VPN detection, certificate pinning, SSL validation, reachability
• Random Data Generation: Secure random strings, passwords, UUIDs, tokens
• Screen Shield: Prevent screenshots, screen recording, AirPlay, blur on background
• Swift Concurrency: Async/await support for all major operations
• Production-Ready: Modular, extensible, and concurrency-safe
• Beautiful SwiftUI Example App: Modern, user-friendly, and interactive

---

🏗️ Architecture

NFSSecurity is organized into modular managers, each responsible for a specific security domain. The main NFSSecurity singleton composes these managers and exposes a unified API.

NFSSecurity
├── BiometricManager
├── KeychainManager
├── EncryptionManager
├── HashingManager
├── IntegrityManager
├── JailbreakDetection
├── DebuggerDetection
├── NetworkSecurityManager
├── RandomGenerator
├── ScreenShield
├── ModesChecker
└── ... (extensible)

All managers are configurable via NFSSecurityConfiguration, allowing you to enable/disable features, set algorithms, customize keys/IVs, and more.

---

📱 Requirements

• Swift: 6.0+
• iOS: 13.0+
• macOS: 10.15+
• Dependencies: None (uses Apple frameworks: CryptoKit, LocalAuthentication, Security)

---

📦 Installation

Swift Package Manager (Recommended)

1. In Xcode, go to File > Add Packages...
2. Enter the repository URL:

   https://github.com/programmer443/NFSSecurity.git
   

3. Select the NFSSecurity package and add it to your target.

---

⚡ Quick Start

import NFSSecurity

let security = NFSSecurity.shared

// Hashing
let hash = try security.hash("Hello, world!", using: .sha256)

// Encryption
let encrypted = try security.encrypt("Sensitive Data".data(using: .utf8)!, using: .aes256, withKey: "mysecretkey1234567890")
let decrypted = try security.decrypt(encrypted, using: .aes256, withKey: "mysecretkey1234567890")

// Biometric Auth
if security.isBiometricAvailable() {
    let authenticated = try await security.authenticateWithBiometrics(reason: "Access secure area")
}

// Keychain
try security.storeStringInKeychain("mySecret", forKey: "token")
let token = try security.retrieveStringFromKeychain(forKey: "token")

// Integrity & Network
let integrity = security.performIntegrityCheck()
let network = security.checkNetworkSecurity()

---

🛠️ Comprehensive Usage

Hashing

let hash = try security.hash("data to hash", using: .sha512)
let isValid = try security.verifyHash("data to hash".data(using: .utf8)!, hash: hash, using: .sha512)

Encryption/Decryption

let encrypted = try security.encrypt("Secret".data(using: .utf8)!, using: .aes128, withKey: "key1234567890123")
let decrypted = try security.decrypt(encrypted, using: .aes128, withKey: "key1234567890123")

Biometric Authentication

if security.isBiometricAvailable() {
    let authenticated = try await security.authenticateWithBiometrics(reason: "Authenticate to proceed")
}

Keychain Management

try security.storeStringInKeychain("value", forKey: "key")
let value = try security.retrieveStringFromKeychain(forKey: "key")
try security.deleteFromKeychain(forKey: "key")

Random Generation

let randomString = try security.generateRandomString(length: 32)
let password = try security.generateSecurePassword(length: 20)
let uuid = security.generateUUID()

Screen Shield

@MainActor
security.enableScreenShield()
// ...
security.disableScreenShield()

Network Security

let result = security.checkNetworkSecurity()
if !result.isSecure {
    print(result.issues)
}

Integrity Checks

let result = security.performIntegrityCheck()
if !result.isValid {
    print(result.issues)
}

---

🔧 Advanced Usage & Customization

Custom Configuration

You can customize every aspect of NFSSecurity via NFSSecurityConfiguration:

let config = NFSSecurityConfiguration(
    encryption: .init(defaultAlgorithm: .aes256, keySize: 32, salt: "mysalt"),
    hashing: .init(defaultAlgorithm: .sha512, salt: "mysalt"),
    screenShield: .init(enabled: true, preventScreenshots: true, blurOnBackground: true),
    enableLogging: true,
    enableErrorReporting: true,
    customErrorHandler: { error in
        print("Security error: \(error)")
    }
)
// Pass config to your custom managers if needed

Extending & Integrating

• Implement your own managers by conforming to the relevant protocols (e.g., EncryptionManagerProtocol, HashingManagerProtocol).
• Swap out or extend any component for custom logic.
• Use the provided SwiftUI SecureView and BlurredBackgroundView for UI protection.

---

🖥️ Example App (SwiftUI)

The included example app demonstrates all features with a modern, user-friendly interface:

• Hashing & Encryption: Select algorithms, enter data, copy results
• Biometric Auth: Test Face ID/Touch ID
• Keychain: Store/retrieve values
• Random Generation: Secure strings, passwords, UUIDs
• Security Checks: Jailbreak, debugger, proxy, integrity, network
• Copy Buttons: Easily copy any result

📸 Screenshots

---

🔒 Security Best Practices

• Always use strong, unique keys for encryption
• Never hardcode secrets in your app
• Use biometric authentication for sensitive actions
• Regularly check for jailbreak/debugger/simulator
• Use certificate pinning for network requests
• Keep your dependencies up to date

---

🤝 Contributing

Contributions, bug reports, and feature requests are welcome!

1. Fork the repo
2. Create your feature branch (git checkout -b feature/YourFeature)
3. Commit your changes (git commit -am 'Add new feature')
4. Push to the branch (git push origin feature/YourFeature)
5. Open a Pull Request

---

📄 License

NFSSecurity is released under the MIT License. See LICENSE for details.

---

🙏 Acknowledgements

• Apple CryptoKit
• Swift Crypto
• LocalAuthentication
• CommonCrypto

---

💬 Support

For questions, issues, or support, please open an issue on GitHub or contact the maintainer.