A flexible HMAC implementation, allowing to specify any HashAlgorithm as input.
Available as a 
Short answer: as a standard HMAC 😉
The HMAC base class derives itself from HashAlgorithm, so except the constructor which takes a secret key, the usage is the same.
NuGet packages:
Hashes block sizes (required by HashMAC.Create()):
| SHA3 size (bits) | Block size (bits) | Block size (bytes) |
|---|---|---|
| 224 | 1152 | 144 |
| 256 | 1088 | 136 |
| 384 | 832 | 104 |
| 512 | 576 | 72 |