README_DEMO

DEPENDENCIES:
pip install cbor2
openssl

All messages are formatted via CBOR and sent over UDP.

.--------.                    .--------.
| CLIENT |                    | SERVER |
'--------'                    '--------'
    |                              |
    |                              |
    | devid, bsize --------------> |
    |                              |
    | <------------- nonce, pcrsel |
    |                              |
    | hw, endorser, EventLog,      |
    | PCRs, signature, AKcert ---> |
    |                              |
    | <----------------- reply msg |
    |                              |

    devid = device identifier derived from MARS (not X509)
    bsize = PCR bank size = # of PCRs
    nonce = number used once as a freshness challenge
   pcrsel = PCR selection, bitmask of PCRs to quote
       hw = crypto "hardware" used by MARS
 endorser = for symmetric attestation, location of endorser / signature verifier
 EventLog = subset of Event Log matching pcrsel
signature = MARS_Quote
   AKcert = X509 certificate for AK, if asymmetric supported
reply msg = textual response