info.py

"""
Device Info Retrieval Example
"""
# (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
#
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from cryptoauthlib import *
from common import *


def info(iface='hid', device='ecc', **kwargs):
    ATCA_SUCCESS = 0x00

    # Get the target default config
    cfg = eval('cfg_at{}a_{}_default()'.format(atca_names_map.get(device), atca_names_map.get(iface)))

    # Set interface parameters
    if kwargs is not None:
        for k, v in kwargs.items():
            icfg = getattr(cfg.cfg, 'atca{}'.format(iface))
            setattr(icfg, k, int(v, 16))

    # Basic Raspberry Pi I2C check
    if 'bus' not in kwargs:
        if 'i2c' == iface and check_if_rpi():
            cfg.cfg.atcai2c.bus = 1

    # Initialize the stack
    assert atcab_init(cfg) == ATCA_SUCCESS
    print('')

    # Request the Revision Number
    info = bytearray(4)
    assert atcab_info(info) == ATCA_SUCCESS
    print('\nDevice Part:')
    print('    ' + get_device_name(info))

    # Request the Serial Number
    serial_number = bytearray(9)
    assert atcab_read_serial_number(serial_number) == ATCA_SUCCESS
    print('\nSerial number: ')
    print(pretty_print_hex(serial_number, indent='    '))

    # Read the configuration zone
    config_zone = bytearray(128)
    assert atcab_read_config_zone(config_zone) == ATCA_SUCCESS

    print('\nConfiguration Zone:')
    print(pretty_print_hex(config_zone, indent='    '))

    # Check the device locks
    print('\nCheck Device Locks')
    is_locked = AtcaReference(False)
    assert atcab_is_locked(0, is_locked) == ATCA_SUCCESS
    config_zone_locked = bool(is_locked.value)
    print('    Config Zone is %s' % ('locked' if config_zone_locked else 'unlocked'))

    assert atcab_is_locked(1, is_locked) == ATCA_SUCCESS
    data_zone_locked = bool(is_locked.value)
    print('    Data Zone is %s' % ('locked' if data_zone_locked else 'unlocked'))

    # Load the public key
    if data_zone_locked:
        print('\nLoading Public key\n')
        public_key = bytearray(64)
        assert atcab_get_pubkey(0, public_key) == ATCA_SUCCESS
        print(convert_ec_pub_to_pem(public_key))

    # Free the library
    atcab_release()


if __name__ == '__main__':
    parser = setup_example_runner(__file__)
    args = parser.parse_args()

    info(args.iface, args.device, **parse_interface_params(args.params))
    print('\nDone')