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#!/usr/bin/env python3
"""
Time libhal RSA key generation
"""
from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter
from datetime import datetime, timedelta
from cryptech.libhal import *
parser = ArgumentParser(description = __doc__, formatter_class = ArgumentDefaultsHelpFormatter)
parser.add_argument("-i", "--iterations", default = 100, type = int, help = "iterations")
parser.add_argument("-p", "--pin", default = "fnord", help = "user PIN")
parser.add_argument("-t", "--token", action = "store_true", help = "store key on token")
parser.add_argument("-k", "--keylen", default = 2048, type = int, help = "key length")
args = parser.parse_args()
hsm = HSM()
hsm.login(HAL_USER_NORMAL, args.pin)
flags = HAL_KEY_FLAG_USAGE_DIGITALSIGNATURE | (HAL_KEY_FLAG_TOKEN if args.token else 0)
sum = timedelta()
for n in range(1, args.iterations + 1):
t0 = datetime.now()
k = hsm.pkey_generate_rsa(args.keylen, flags)
t1 = datetime.now()
k.delete()
sum += t1 - t0
print("{:4d} this {} mean {}".format(n, t1 - t0, sum / n))
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