1#!/usr/bin/env python3 2 3# Copyright (C) 2021 The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16 17""" 18Write given number of random bytes, generated with optional seed. 19""" 20 21import random, argparse 22 23if __name__ == '__main__': 24 parser = argparse.ArgumentParser(description=__doc__) 25 parser.add_argument('--seed', help='Seed to random generator') 26 parser.add_argument('--length', type=int, required=True, help='Length of output') 27 args = parser.parse_args() 28 29 if args.seed: 30 random.seed(args.seed) 31 32 print(''.join(chr(random.randrange(0,0xff)) for _ in range(args.length))) 33