Passphrase Entropy Meter

Estimate the bits of entropy in a passphrase based on its character set and length.

Passphrase

Strength: Strong

Length28 chars

Character pool R27 (4.75 bits/char)

Naive entropy133.1 bits

Corrected entropy117.4 bits

Estimated guesses2.26e+35

Estimated offline crack time (average case)

Online throttled (100/s)3.59e+25 years

Online unthrottled (1e4/s)3.59e+23 years

Offline fast hash (1e9/s)3.59e+18 years

Offline GPU farm (1e12/s)3.59e+15 years

Pools: lowercase (26), space (1)117.4 bits

Parse and explain Unix passwd and shadow file lines field by field.

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