HMAC Support

[H0r53]

This is more of a question than an issue. Quite simply: Does this script also support finding HMAC?

I'm reversing a binary that I'm quite sure uses HMAC with SHA1. The script was able to correctly identify the SHA1 portion of the binary. However, what I'm mostly interested in is finding the key used during the HMAC procedure. HMAC does has some magic number constants, notably 0x36 and 0x5c, but I haven't had much luck finding where that part of the implementation occurs.

Thanks!