Utilitaires crypto

Générateur hash, HMAC et checksum fichier

Generate SHA hashes, HMAC signatures, and file checksums locally with the browser Web Crypto API.

Hash workspace

Generate hashes and HMAC signatures with Web Crypto.

43 B input

SHA-256 hash

SHA-256 HMAC

Fonctionnalités

SHA Hashes

Create SHA-1, SHA-256, SHA-384, and SHA-512 digests from text.

HMAC Signatures

Sign text with a local secret using HMAC and the selected SHA algorithm.

File Checksums

Pick a local file and calculate a checksum without uploading it.

Hex Output

Copy clean lowercase hex values for config files, APIs, and release checks.

Browser Memory

Files are read in your browser and never sent to a backend.

Secret Friendly

Useful for API signing experiments where test secrets should stay local.

Questions fréquentes

The tool supports SHA-1, SHA-256, SHA-384, and SHA-512 through the browser Web Crypto API.

Yes, but the browser reads the selected file into memory before hashing. Very large files depend on device memory and browser limits.

No. The HMAC key and message are processed locally in your browser.