// kit · hash

Hash + HMAC calculator

Compute SHA-1/256/384/512 and HMAC over any text. All in the browser via SubtleCrypto.

INPUT TEXT HMAC KEY (optional)

ENCODING

// privacy

Privacy by design

Your reading isn't for sale.

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Zero analytics cookies, no fingerprinting, no embedded pixels.

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Nothing about your activity leaves this server.

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API keys you save are sealed with libsodium.