ZeroUtil
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Security & Privacy

Password generators, hash tools and encryption

Password Generator

Generate cryptographically secure random passwords with configurable length, character types and entropy display.

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Password Strength Checker

Check password strength with entropy calculation, pattern detection and common password matching.

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Security Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text or files using the Web Crypto API.

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TOTP Generator

Generate time-based one-time passwords (TOTP) from a base32 secret with live 30-second countdown.

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CSP Header Generator

Build Content-Security-Policy headers with a visual form, presets and per-directive configuration.

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AES Encrypt / Decrypt

Encrypt and decrypt text with AES-256-GCM and PBKDF2 key derivation, entirely in the browser.

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RSA Key Generator

Generate RSA key pairs (2048 or 4096 bit) in PEM format using the Web Crypto API.

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PBKDF2 Hash Generator

Derive cryptographic keys from passwords using PBKDF2 with configurable iterations, salt and hash function.

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