test 2.39 KB
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#!/usr/bin/env python3

import os
import sys
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import time
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import subprocess
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import serial.tools.list_ports
from test_common import (
    LogicMultiplexerTimeMeasurements,
    parse_nist_aead_test_vectors,
    DeviceUnderTestAeadUARTP,
    eprint,
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    FileMutex,
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    run_nist_aead_test_line,
)
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def get_serial():
    ports = serial.tools.list_ports.comports()
    devices = [
        p.device
        for p in ports
        if (p.vid == 0x1A86 and p.pid == 0x7523)
    ]
    devices.sort()
    return devices[0]
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class Uno(DeviceUnderTestAeadUARTP):
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    def __init__(self, build_dir):
        DeviceUnderTestAeadUARTP.__init__(self)
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        self.uart_device = get_serial()
        devname = os.path.basename(self.uart_device)
        self.lock = FileMutex('/var/lock/lwc-compare.%s.lock' % devname)
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        self.build_dir = build_dir

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    def reset(self):
        self.ser.setDTR(True)
        time.sleep(0.01)
        self.ser.setDTR(False)
        time.sleep(1)

    def prepare(self):
        self.ser = serial.Serial(
            self.uart_device,
            baudrate=115200,
            timeout=5)
        self.reset()
        DeviceUnderTestAeadUARTP.prepare(self)

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    def flash(self):
        pipe = subprocess.PIPE
        previous_dir = os.path.abspath(os.curdir)
        os.chdir(self.build_dir)
        cmd = ['platformio', 'run', '-e', 'uno', '--target', 'upload']
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        cmd.extend(['--upload-port', self.uart_device])
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        p = subprocess.Popen(
            cmd, stdout=sys.stderr, stdin=pipe)
        stdout, stderr = p.communicate("")
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        assert p.returncode == 0
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        eprint("Firmware flashed.")
        os.chdir(previous_dir)

    def dump_ram(self):
        return None
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def main(argv):
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    if len(argv) != 3:
        print("Usage: test LWC_AEAD_KAT.txt build_dir")
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        return 1
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    kat = list(parse_nist_aead_test_vectors(argv[1]))
    build_dir = argv[2]

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    dut = Uno(build_dir)
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    dut.flash()
    dut.prepare()
    sys.stdout.write("Board prepared\n")
    sys.stdout.flush()

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    try:
        tool = LogicMultiplexerTimeMeasurements(0x0c00)
        tool.begin_measurement()

        for i, m, ad, k, npub, c in kat:
            tool.arm()
            run_nist_aead_test_line(dut, i, m, ad, k, npub, c)
            tool.unarm()

    except Exception as ex:
        print("TEST FAILED")
        raise ex

    finally:
        tool.end_measurement()
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if __name__ == "__main__":
    sys.exit(main(sys.argv))