@arbius/aa-wallet/dist/utils/securityEducation.js

A secure and flexible Account Abstraction wallet implementation for Arbitrum One chain applications.

/**
 * This file contains educational examples of security vulnerabilities
 * and how to avoid them. These examples are for educational purposes only.
 *
 * WARNING: Do not use any of these examples in production code!
 */
/**
 * ⚠️ BAD EXAMPLE - DO NOT USE ⚠️
 *
 * This example shows how private keys can be leaked through global variables,
 * which is a security vulnerability.
 */
export function badPrivateKeyExample() {
    // ⚠️ NEVER DO THIS - Exposing private key in global scope ⚠️
    // This makes it accessible to any code, including malicious scripts
    window.privateKey = '0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef';
    // ⚠️ NEVER DO THIS - Storing in localStorage unencrypted ⚠️
    localStorage.setItem('privateKey', '0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef');
    // ⚠️ NEVER DO THIS - Logging sensitive information ⚠️
    console.log('Private key:', '0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef');
}
/**
 * ✅ GOOD EXAMPLE - Secure Key Handling ✅
 *
 * This example shows how to handle private keys securely,
 * reducing the risk of exposure.
 */
export function securePrivateKeyExample() {
    // Use a closure to prevent global access
    function createSecureWallet() {
        // const privateKey = '0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef'; // unused
        // Only expose necessary functions, not the key itself
        return {
            sign: (message) => {
                // Use the private key to sign without exposing it
                return signMessage(message);
            },
            getAddress: () => {
                // Derive address from private key without exposing it
                return deriveAddress();
            }
        };
    }
    // Mock implementations
    function signMessage(message) {
        // Real implementation would use a crypto library
        return `signed-${message}`;
    }
    function deriveAddress() {
        // Real implementation would derive address from key
        return '0x1234...5678';
    }
    // Use the secure wallet
    const wallet = createSecureWallet();
    const signature = wallet.sign('Hello, world!');
    const address = wallet.getAddress();
    // The wallet user has no access to the private key
    return { signature, address };
}
/**
 * Security Best Practices
 *
 * 1. Never store private keys in global scope
 * 2. Use closures to restrict access to sensitive data
 * 3. Don't log sensitive information
 * 4. Don't store unencrypted keys in localStorage/sessionStorage
 * 5. Use secure key derivation when encryption is needed
 * 6. Consider hardware wallets or secure enclaves for key storage
 * 7. Implement proper error handling that doesn't expose sensitive details
 * 8. Use Content Security Policy to prevent script injection
 * 9. Regularly audit your code for security vulnerabilities
 * 10. Consider using established libraries for cryptographic operations
 */