[elithrar]

It's important to note that "HMAC-SHA-1" is an entirely different construction compared to SHA-1. It is a HMAC that happens to use SHA-1 internally, and it uses it in a way that means it does not yet share weaknesses with SHA-1 as a hash.

Of course, if you are writing something today, you should lean towards HMAC-SHA-256 or 512 as an extra buffer, but choosing to avoid HMAC-SHA-1 because it says "SHA-1" is not a valid reason.