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Hash

Compute cryptographic hashes of arbitrary input. SHA-256 for general-purpose integrity checks, SHA-1 for compatibility with older systems, SHA-384 / SHA-512 when you need extra collision resistance. Returns hex and base64 in one response so callers don't have to convert. Identical inputs return cached results instantly worldwide.

Hash bytes
Hash a text string with SHA-1 / SHA-256 / SHA-384 / SHA-512.
Hash file
Hash arbitrary file bytes with SHA-1 / SHA-256 / SHA-384 / SHA-512.
HMAC sign
Compute an HMAC signature (SHA-1/256/384/512) over input bytes.
HMAC verify
Verify an HMAC signature in constant time.