bcrypt 生成与校验
生成或校验 bcrypt 哈希
在浏览器中运行 · 无需上传
此工具及本页说明目前仍为英文。功能完全相同：一切都在你的浏览器中运行。
Each step up doubles the time. 10 to 12 is usual for websites today.
你的浏览器版本过旧，无法运行此工具。请更新浏览器，或使用最新版的 Chrome、Edge、Firefox 或 Safari。
- 任何内容都不会离开你的设备
- 服务器不限制文件大小
- 无需注册，无水印
- 免费
How to use the bcrypt generator
- Choose to make a hash or to check one.
- Type the password, and the hash when checking.
- Copy the hash, or read whether they match.
Good to know
- Hashes start with $2b$, the current version. Hashes starting with $2a$ and $2y$ (PHP) can be checked too.
- The cost is the number of rounds as a power of 2: each step up doubles the time it takes to make and to check a hash, for you and for an attacker. 10 to 12 is usual for websites.
- Each hash gets a new random salt, so the same password gives a different hash every time. All of them check correctly.
- bcrypt uses only the first 72 bytes of a password; the page warns when a password is longer.
Your passwords stay on your device
Hashing and checking run in your browser with bcrypt.js. Nothing you type is sent anywhere.
常见问题
Can a bcrypt hash be turned back into the password?
No. bcrypt is one-way: the only way to find the password is to try candidates, which the cost makes slow on purpose. That is why you can check a guess here but not "decrypt" a hash.
Is my password sent anywhere?
No. The hash is made in your browser, and this site's security policy blocks the page from sending anything.