I am trying to use the various tools provided by ec2-ami-tools

Eg,

ec2-create-snapshot -h 

....



     -K, --private-key KEY
          Specify KEY as the private key to use. Defaults to the value of the
          EC2_PRIVATE_KEY environment variable (if set). Overrides the default.

     -C, --cert CERT
          Specify CERT as the X509 certificate to use. Defaults to the value 
          of the EC2_CERT environment variable (if set). Overrides the default.

-K and -C are two required values, and I cant understand what values are these expecting?

If I create a Keypair from Elasticfox, I get only one file to download and a fingerprint. So which of this need to get where?