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Proof of concept implementation of pairing procedure for Blind My protocol.

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This directory contains several programs used to create keys and
enroll a device in our secure Airtag protocol.  Important files are
described below.


serialkey.py - Configuration file for storing the symmetric key
that is used to generate and verify serial numbers.  Need to create
a 16 byte key and put it here before serialgen.py can be run.

serialgen.py - Generates serial numbers using the key in
serialkey.py

pbs.py - Includes functions for performing partial blind signatures
over eliptic curves.  Should be imported by another python program,
not run directly.

pbs_dh.py - Same thing but over integer groups.  Useful for checking
correctness but much slower than pbs.py

comm.py - Library code for network communication, not run directly.

client.py - Client program for enrolling a new device in the Airtag
    protocol.  Should be run after starting server.py. 
    
    - Outputs:
        signed_key.txt which contains JSON representations of all the
        blind signed public keys

server.py - Server program for enrolling a new device in the Airtag
protocol.

puckcode.js - Javascript code to run on the Puck and broadcast keys
generating during the enrollment process.  Requires uploading a
puckkeys.bin file to the puck which contains the keys in a binary
format.  This file is output by client.py after a successful run, but
there is also a sample one in the repo with 10 keys that can be used
as well.

extract_keys.py - Takes as input a signed_keys.txt file and converts
it to a puckkeys.bin file to load onto a puck.

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