#!/usr/bin/env python
from __future__ import print_function
import sys,fileinput,binascii
try:
    import ecdsa
except:
    print('python ecdsa module is required')
    print('try running: ')
    print('     pip install ecdsa')
    sys.exit(1)


if len(sys.argv) not in [2]:
    print('usage: %s <key.pem>' % sys.argv[0])
    sys.exit(1)

pemkey = sys.argv[1]
attestkey = ecdsa.SigningKey.from_pem(open(pemkey).read())

print(binascii.hexlify(attestkey.to_string()))
print(repr(attestkey.to_string()))