HMAC Generator — Secure Hash-Based Message Authentication
Generate HMAC SHA256, SHA1, or SHA512 signatures online. Choose HEX or Base64 encoding. Ideal for verifying payload integrity in APIs, webhooks, JWT, and security applications.
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Online HMAC Generator for Developers
Generate secure HMAC hashes using your input text and a secret key. Choose between SHA-1, SHA-256, and SHA-512 algorithms. This tool is ideal for signing API requests, verifying payloads, or learning cryptographic hashing.
Features
- 🔐 SHA-1, SHA-256, SHA-512 support
- 📥 Input your text and secret key
- 📤 Output in HEX or Base64 format
- ⚡ Auto-generate hash with live feedback
- 📋 One-click copy for integration into APIs
- 🧠 Useful for JWTs, OAuth, webhook verification, and more
- ✅ 100% client-side — no data sent to server
Common Use Cases
- ✅ Signing and verifying JWT tokens
- ✅ Verifying webhook authenticity (e.g., Stripe, GitHub)
- ✅ Securing API payloads using HMAC signatures
- ✅ Learning and testing cryptographic hash workflows
Frequently Asked Questions (FAQs)
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