HMAC-SHA512 Generator
💡HMAC provides integrity/authenticity, not encryption. Requires a shared secret.
HMAC provides message authentication and integrity, not confidentiality.
About HMAC-SHA512
HMAC with SHA-512 provides a 512-bit MAC suitable for integrity and authenticity of messages with a shared key.
Security Notes
Keep keys secret, set clear key IDs/rotation, and sign exactly the canonical bytes you intend to verify.
HMAC-SHA512: FAQs
FAQs
- What does HMAC guarantee?
- Integrity and authenticity (with a shared secret). It does not encrypt the message.
- Which is better: SHA256 or SHA512?
- Both are strong; SHA512 has a larger internal state. Choose based on platform performance and compatibility.