Noob: HMAC-SHA256 message digest and key

[Unground]

Thanks, that helps!

When looking at the algorithm though, it does not state that the hash only uses the first 50 bytes of the message in the HMAC generation, but the whole message:

hash(key + hash(key + message))

Maybe I am just using it wrong and it's only for HMAC password generation with 50 byte salt, and not message authentication hashes.

Any ideas?

Thanks!