woop/scripts/bls_bintohex.py

#!/usr/bin/env python3

import argparse
import binascii
import sys

parser = argparse.ArgumentParser(description='Tool to convert your BLS key from binary to the accepted hex format.')
parser.add_argument('file')
parser.add_argument('-o', '--output', type=str, metavar='output', help='name your keyfile')
args = parser.parse_args()

try:
    with open(args.file, 'rb') as inputFile:
        binFormat = inputFile.read()
except IOError:
    print('File couldn\'t be opened.')
    sys.exit(1)

hexFormat = binascii.hexlify(binFormat)

if args.output is not None:
    outputName = args.output
else:
    outputName = 'PUB.key'

try:
    with open(outputName, 'wt') as outputFile:
        outputFile.write(hexFormat.decode('ascii'))
except IOError:
    print('File couldn\'t be written.')
    sys.exit(1)