/**
 * 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 declare function badPrivateKeyExample(): void;
/**
 * ✅ GOOD EXAMPLE - Secure Key Handling ✅
 *
 * This example shows how to handle private keys securely,
 * reducing the risk of exposure.
 */
export declare function securePrivateKeyExample(): {
    signature: string;
    address: string;
};
/**
 * 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
 */