आपके ब्राउज़र में स्थानीय रूप से प्रोसेस किया गया • ज़ीरो सर्वर अपलोड

HMAC Generator (Keyed-Hash Message Authentication).

Calculate RFC 2104 HMAC authentication codes with custom secret keys and algorithm selection.

HMAC Calculator (Keyed-Hash)RFC 2104

Hash Function:

Message / Payload12 characters

Secret Key

Key Format:

Calculated HMAC Output

HMAC Generator के बारे में

HMAC (Hash-based Message Authentication Code) is defined in RFC 2104. It combines a cryptographic hash function with a secret shared key to verify both data integrity and message authenticity. It is the foundation of webhook signatures (GitHub, Stripe, Shopify) and API signing (AWS Signature V4).

मुख्य उपयोग (Use Cases)

✓Webhook signature verification (Stripe, GitHub, Shopify)
✓AWS Signature Version 4 API request signing
✓JSON Web Token (JWT) HS256/HS512 signature creation

तकनीकी विवरण (Specifications)

मानक (Standard)
निष्पादन मोड: क्लाइंट-साइड (Web Crypto)
सर्वर अपलोड: कोई नहीं (0 बाइट्स प्रेषित)

अक्सर पूछे जाने वाले प्रश्न (FAQ)

HMAC Generator के बारे में तकनीकी और सुरक्षा प्रश्न।

Frequently Asked Questions

Clear answers to common cryptographic and implementation questions.

What is the purpose of HMAC?

HMAC ensures that a message was not altered in transit AND was produced by a sender holding the shared secret key.