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Security
BIP-39 Passphrase Generator
Generates a 12 or 24 word BIP-39 mnemonic from secure browser entropy with SHA-256 checksum.
Use a wordlist demo BIP-39 (subset) com checksum SHA-256 — adequada para demonstração. Para custódia real, use carteira auditada.
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Apply classic ciphers (Caesar, ROT13, Atbash) or Base64. Useful for puzzles, CTFs and testing — do not use for real security.
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Password Strength Checker
Check the strength of a password with entropy calculation, common-password check and improvement tips. Runs in your browser — no data is sent.