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A(z) Password Strength kiszámítása

Mi az a Password Strength?

A password entropy calculator measures the cryptographic strength of a password in bits: entropy = log₂(character set size^password length). A 12-character password using upper, lower, digits, and symbols has ~79 bits of entropy. At least 60–70 bits is generally recommended; password managers make using high-entropy passwords practical.

Útmutató lépésről lépésre

  1. 1Count character set size
  2. 2Calculate combinations for length
  3. 3Show bits of entropy

Worked Examples

Bemenet
12 char password, mixed case+numbers
Eredmény
~79 bits entropy
Measure of password strength

Common Mistakes to Avoid

  • Not double-checking results
  • Ignoring edge cases

Frequently Asked Questions

What does this calculator do?

Input values

How do I use this calculator?

System calculates

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Beállítások

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