convert certbot to asn1

convert-certbot-asn1.py

#!/usr/bin/python3

import sys
import json
import base64
import binascii

with open(sys.argv[1]) as fp:
    pkey = json.load(fp)

def enc(data):
    missing_padding = 4 - len(data) % 4
    if missing_padding:
        data += b'=' * missing_padding
    return '0x' + binascii.hexlify(base64.b64decode(data, '-_')).decode().upper()

for k, v in pkey.items():
    if k == 'kty':
        continue
    pkey[k] = enc(v.encode())

print("asn1=SEQUENCE:private_key\n[private_key]")
print("version=INTEGER:0")
print("n=INTEGER:{}".format(pkey['n']))
print("e=INTEGER:{}".format(pkey['e']))
print("d=INTEGER:{}".format(pkey['d']))
print("p=INTEGER:{}".format(pkey['p']))
print("q=INTEGER:{}".format(pkey['q']))
print("dp=INTEGER:{}".format(pkey['dp']))
print("dq=INTEGER:{}".format(pkey['dq']))
print("qi=INTEGER:{}".format(pkey['qi']))