Category

Cryptography & Security Tools

The Cryptography and Security Toolkit covers hashing, keyed authentication, password storage digests, one-time passwords and token generation. Sensitive input is processed with the Web Crypto API and WebAssembly in your browser and is never transmitted or logged.

15 free tools in this category.

Hashing & checksums

Hash Generator Producing a fixed-length digest with MD5, SHA-1, SHA-256, SHA-384, SHA-512 or CRC32. Hmac Generator A keyed hash for message authentication. Checksum Generator A short value used to detect accidental data changes. Hash Identifier Guessing a hash algorithm from its format.

Password & key derivation

Bcrypt Hash Generator A password hashing function with a tunable cost factor. Scrypt Hash Generator A memory-hard key derivation function. Argon2 Hash Generator The winner of the Password Hashing Competition. Password Generator Creating strong random passwords from selectable character sets.

Tokens, signatures & OTP

Jwt Validator A signed, URL-safe token carrying JSON claims. Jwk Generator A JSON representation of a cryptographic key. Token Generator Producing random tokens in hex, Base64 or alphanumeric form. Totp Generator A rotating six-digit code derived from a shared secret and the clock. Hotp Generator A one-time password derived from a secret and counter. Rsa Signature Generator Signing a message with an RSA private key. Ed25519 Signature Verifier A fast elliptic-curve signature scheme.