# Terminology: What is the word describing a hash key, a crypto key, and a certificate?

If I want to check the integrity of some piece of data, I can check that a cryptographic hash of the data corresponds to a known hash.

Alternatively I can also check a digital signature on the data and see that it corresponds to a known authority for the data. I can use certificates or not for this.

I can also verify a MAC for the data using a secret key.

Lastly I can decrypt the data using an authenticating cipher mode using a secret key that is known only by me and the known authority for the data.

In these three cases I have some key or hash material. What is the word that correctly describes the material I have?

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Another way is to verify a MAC (which is not necessarily part of an authenticating cipher mode). $\hspace{.89 in}$ –  Ricky Demer Mar 12 '14 at 12:09
True, I'll update the question. –  user239558 Mar 12 '14 at 13:33