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HMAC Generator
Compute and verify HMAC signatures using Web Crypto. Hex or Base64 output. SHA-1, SHA-256, SHA-384, SHA-512.
🔒 100% client-side. Secret and message never leave your browser.
Output
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Verify
Note: SHA-1 HMAC remains widely used but is considered legacy. Prefer SHA-256 or higher for new integrations.