HMAC-SHA512
RecommendedHMAC-SHA512 combines SHA-512 with a secret key for message authentication. It provides a larger MAC output than HMAC-SHA256 and is often faster on 64-bit systems.
What is HMAC-SHA512?
HMAC-SHA512 is a recommended cryptographic hash algorithm that produces a 512 bits (128 hex characters) output. HMAC-SHA512 combines SHA-512 with a secret key for message authentication. It provides a larger MAC output than HMAC-SHA256 and is often faster on 64-bit systems. It is classified as fast in performance and commonly used for high-security api authentication and jwt signing with hs512 algorithm.
Output Length
512 bits (128 hex characters)
Speed
Fast
Security
Recommended
Performance
Fast — similar or better performance than HMAC-SHA256 on 64-bit systems due to SHA-512's native 64-bit operations.
Use Cases
- → High-security API authentication
- → JWT signing with HS512 algorithm
- → Environments requiring longer MAC values
- → Key derivation in HKDF-SHA512
Example Hash
Input:
Hello, World! (with key: secret)
HMAC-SHA512 Output:
1b391a09ca70b73d3da3a3c28e40a4c6f4c54adb10f63e31939ef66d4e71a5d8e4a7d3e4d7a3ef3db3e93b8e3d7c3f8b7d3e5f8c0a2d4e6f8a1b3c5d7e9f0a1b2
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