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Password Lab

Capabilities

A cryptographic sandbox for analysing password strength, entropy, and vulnerability, providing real-time feedback on credential security.

Target Use Cases

  • Benchmarking credential complexity
  • Testing entropy against brute-strength models
  • Security education and policy validation
  • Checking passwords against common leak patterns
Length0 chars
Entropy
0 bits

How K-Anonymity Protects You

We do not steal your password since your full password never leaves your browser.

  1. The browser computes the SHA-1 hash locally:
    DA39A3EE5E6B4B0D3255BFEF95601890AFD80709
  2. We send only the first 5 characters to the HaveIBeenPwned API: DA39A
  3. The API returns ~500 hashes that start with those 5 characters.
  4. The browser searches that list locally for the rest of your hash: 3EE5E6B4B0D3255BFEF95601890AFD80709
Breach Analysis

Type a password to begin