密码哈希生成器（PBKDF2）
使用PBKDF2-SHA256在你的浏览器中生成安全的密码哈希。比MD5或简单SHA更强，工作因子可调。
如何使用本工具
- 1
Type or paste the password you want to hash.
- 2
Optionally set a salt (leave it blank for a secure random one) and choose an iteration count.
- 3
Click Hash. The salted PBKDF2-SHA256 digest is derived entirely in your browser.
什么是密码哈希生成器（PBKDF2）？
Bcrypt是一种流行的密码哈希算法，但它需要服务器端的库。本工具使用PBKDF2（Password-Based Key Derivation Function 2，基于密码的密钥派生函数2）生成强度相当的哈希，这是一种由NIST推荐、迭代次数可调的算法。bcrypt和PBKDF2都会刻意减慢暴力破解攻击的速度；适当的迭代次数会使每次尝试耗时约250毫秒。
常见使用场景
Learn how salted, iterated password hashing works by watching the output change with the salt and work factor.
Generate test hashes to seed a development database without wiring up your real auth code.
Produce a reference digest to confirm your server-side PBKDF2 implementation matches for the same inputs.
Demonstrate to a team why MD5/SHA-1 password storage is unsafe versus a deliberately slow KDF.
Create a one-off credential for a script or prototype where pulling in a full auth library is overkill.
Benchmark how iteration count affects hashing time on your hardware to pick a sensible work factor.