About This Tool
What is 密码生成器?
A tool for generating secure random passwords. Customize the combination of uppercase, lowercase, numbers, and special characters to create passwords of desired strength. Uses a cryptographically secure random number generator.
How to Use
- Set the password length (longer means more secure).
- Select character types to include (uppercase, lowercase, numbers, symbols).
- Click 'Generate' to create a password.
- Copy the generated password for use.
Key Features
- Configurable uppercase, lowercase, numbers, and symbols
- Custom password length setting
- Cryptographically secure random generation
- One-click copy functionality
Tips
- Security experts recommend passwords of at least 12 characters.
- Including all character types (uppercase, lowercase, numbers, symbols) increases resistance to brute-force attacks.
- Use a unique password for each service and consider a password manager.
密码生成器
生成安全的随机密码
Frequently Asked Questions
密码需要多长才安全？▼
最少12个字符，建议16个以上。每增加一个字符，暴力破解所需时间呈指数增长。使用混合字符类型的12位密码在当前技术下需要数个世纪才能破解。
随机密码和密码短语哪个更好？▼
两者都可以很安全。16字符的随机密码（如'xK9#mP2$vL7@nQ4&'）紧凑但难以记忆。4-5个随机单词的密码短语（如'correct-horse-battery-staple'）更容易记忆且同样强大。根据是否使用密码管理器来选择。
生成的密码真的是随机和安全的吗？▼
是的。此工具使用Web Crypto API（crypto.getRandomValues），提供加密级安全随机数。随机性来自操作系统的熵源，使输出不可预测，适合安全敏感的用途。