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密码生成器
自定义长度、数字、符号和大写字母，生成强随机密码。本地生成，不发送至任何地方。
如何使用此工具
- 1在上方设置密码选项并输入。
- 2结果实时更新。
- 3点击一下即可复制输出结果。
常见问题
此密码生成器生成的密码安全且随机吗？+
是的，密码在浏览器本地生成，视情况使用加密安全的 Web Crypto API，不记录任何数据，也不会传输到服务器。
我的数据安全吗？+
完全安全。此工具完全在浏览器中运行，您粘贴或输入的内容不会上传到任何服务器。
教程与深度解析
What Makes a Password Strong in 2026
Learn what actually makes a password uncrackable in 2026: entropy math, why length beats complexity, passphrases, and how modern crackers work.
JWTs Explained: Header, Payload, Signature and Security Pitfalls
Learn how JSON Web Tokens work — the three parts, signing vs encryption, the alg=none attack, cookie vs localStorage, and expiry claims — with worked examples.
UUIDs Explained: v4 vs v7 and When to Use Them
Learn the collision math behind UUIDs, when to pick v4 vs v7 for database keys, what GUID means, and when UUIDs are the wrong tool entirely.
MD5 vs SHA-256: Which Hash Should You Use?
MD5 is broken for security but fine for checksums. SHA-256 is the modern default. Learn the difference, when each applies, and how to hash passwords safely.