Security & Crypto
Practical security and cryptography utilities — TOTP codes, password and passphrase generators, hashes, certificate decoding and breach checks.
Security & Crypto
PEM Decode
Paste a PEM-encoded public key (SPKI) to see its algorithm and key size. 100% in your browser.
Security & Cryptohtpasswd
Generate Apache .htpasswd lines using bcrypt. Works for nginx auth_basic too. 100% in your browser.
Security & CryptoTOTP
Generate the current 6-digit TOTP code from a base32 secret. Same algorithm as Google Authenticator. Live countdown. Local-only.
Security & CryptoDiceware
EFF wordlist passphrases — strong + memorable. Random via crypto.getRandomValues.
Security & CryptoPwned
Check if a password appears in known breaches — using k-anonymity. Only the first 5 hex chars of SHA-1 leave your browser.