from argparse import Namespace
from OpenSSL import crypto, SSL
from uuid import uuid4
-from typing import Tuple, Optional
+from typing import Tuple, Any, Dict, Union
+
+
+class InternalError(ValueError):
+ pass
+
+
+class InternalCryptoCaller:
+ def fail(self, msg: str) -> None:
+ raise ValueError(msg)
+
+ def password_hash(self, password: str, salt_password: str) -> str:
+ salt = salt_password.encode() if salt_password else bcrypt.gensalt()
+ return bcrypt.hashpw(password.encode(), salt).decode()
+
+ def verify_password(self, password: str, hashed_password: str) -> bool:
+ _password = password.encode()
+ _hashed_password = hashed_password.encode()
+ try:
+ ok = bcrypt.checkpw(_password, _hashed_password)
+ except ValueError as err:
+ self.fail(str(err))
+ return ok
+
+ def create_private_key(self) -> str:
+ pkey = crypto.PKey()
+ pkey.generate_key(crypto.TYPE_RSA, 2048)
+ return crypto.dump_privatekey(crypto.FILETYPE_PEM, pkey).decode()
+
+ def create_self_signed_cert(
+ self, dname: Dict[str, str], pkey: str
+ ) -> str:
+ _pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, pkey)
+
+ # Create a "subject" object
+ with warnings.catch_warnings():
+ warnings.simplefilter("ignore")
+ req = crypto.X509Req()
+ subj = req.get_subject()
+
+ # populate the subject with the dname settings
+ for k, v in dname.items():
+ setattr(subj, k, v)
+
+ # create a self-signed cert
+ cert = crypto.X509()
+ cert.set_subject(req.get_subject())
+ cert.set_serial_number(int(uuid4()))
+ cert.gmtime_adj_notBefore(0)
+ cert.gmtime_adj_notAfter(10 * 365 * 24 * 60 * 60) # 10 years
+ cert.set_issuer(cert.get_subject())
+ cert.set_pubkey(_pkey)
+ cert.sign(_pkey, 'sha512')
+ return crypto.dump_certificate(crypto.FILETYPE_PEM, cert).decode()
+
+ def _load_cert(self, crt: Union[str, bytes]) -> Any:
+ crt_buffer = crt.encode() if isinstance(crt, str) else crt
+ cert = crypto.load_certificate(crypto.FILETYPE_PEM, crt_buffer)
+ return cert
+
+ def _issuer_info(self, cert: Any) -> Tuple[str, str]:
+ components = cert.get_issuer().get_components()
+ org_name = cn = ''
+ for c in components:
+ if c[0].decode() == 'O': # org comp
+ org_name = c[1].decode()
+ elif c[0].decode() == 'CN': # common name comp
+ cn = c[1].decode()
+ return (org_name, cn)
+
+ def certificate_days_to_expire(self, crt: str) -> int:
+ x509 = self._load_cert(crt)
+ no_after = x509.get_notAfter()
+ if not no_after:
+ self.fail("Certificate does not have an expiration date.")
+
+ end_date = datetime.datetime.strptime(
+ no_after.decode(), '%Y%m%d%H%M%SZ'
+ )
+
+ if x509.has_expired():
+ org, cn = self._issuer_info(x509)
+ msg = 'Certificate issued by "%s/%s" expired on %s' % (
+ org,
+ cn,
+ end_date,
+ )
+ self.fail(msg)
+
+ # Certificate still valid, calculate and return days until expiration
+ with warnings.catch_warnings():
+ warnings.simplefilter("ignore")
+ days_until_exp = (end_date - datetime.datetime.utcnow()).days
+ return int(days_until_exp)
+
+ def get_cert_issuer_info(self, crt: str) -> Tuple[str, str]:
+ return self._issuer_info(self._load_cert(crt))
+
+ def verify_tls(self, crt: str, key: str) -> None:
+ try:
+ _key = crypto.load_privatekey(crypto.FILETYPE_PEM, key)
+ _key.check()
+ except (ValueError, crypto.Error) as e:
+ self.fail('Invalid private key: %s' % str(e))
+ try:
+ _crt = self._load_cert(crt)
+ except ValueError as e:
+ self.fail('Invalid certificate key: %s' % str(e))
+
+ try:
+ context = SSL.Context(SSL.TLSv1_METHOD)
+ with warnings.catch_warnings():
+ warnings.simplefilter("ignore")
+ context.use_certificate(_crt)
+ context.use_privatekey(_key)
+ context.check_privatekey()
+ except crypto.Error as e:
+ self.fail(
+ 'Private key and certificate do not match up: %s' % str(e)
+ )
+ except SSL.Error as e:
+ self.fail(f'Invalid cert/key pair: {e}')
# subcommand functions
password = data['password']
salt_password = data['salt_password']
- if not salt_password:
- salt = bcrypt.gensalt()
- else:
- salt = salt_password.encode()
-
- hash_str = bcrypt.hashpw(password.encode(), salt).decode()
+ hash_str = InternalCryptoCaller().password_hash(password, salt_password)
json.dump({'hash': hash_str}, sys.stdout)
def verify_password(args: Namespace) -> None:
+ icc = InternalCryptoCaller()
data = json.loads(sys.stdin.read())
- password = data.encode('utf-8')
- hashed_password = data.encode('utf-8')
+ password = data.get('password', '')
+ hashed_password = data.get('hashed_password', '')
try:
- ok = bcrypt.checkpw(password, hashed_password)
+ icc.verify_password(password, hashed_password)
except ValueError as err:
_fail_message(str(err))
json.dump({'ok': ok}, sys.stdout)
def create_self_signed_cert(args: Namespace) -> None:
-
+ icc = InternalCryptoCaller()
# Generate private key
if args.private_key:
# create a key pair
- pkey = crypto.PKey()
- pkey.generate_key(crypto.TYPE_RSA, 2048)
- print(crypto.dump_privatekey(crypto.FILETYPE_PEM, pkey).decode())
+ print(icc.create_private_key())
return
data = json.loads(sys.stdin.read())
-
dname = data['dname']
- pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, data['private_key'])
-
- # Create a "subject" object
- with warnings.catch_warnings():
- warnings.simplefilter("ignore")
- req = crypto.X509Req()
- subj = req.get_subject()
-
- # populate the subject with the dname settings
- for k, v in dname.items():
- setattr(subj, k, v)
-
- # create a self-signed cert
- cert = crypto.X509()
- cert.set_subject(req.get_subject())
- cert.set_serial_number(int(uuid4()))
- cert.gmtime_adj_notBefore(0)
- cert.gmtime_adj_notAfter(10 * 365 * 24 * 60 * 60) # 10 years
- cert.set_issuer(cert.get_subject())
- cert.set_pubkey(pkey)
- cert.sign(pkey, 'sha512')
-
- print(crypto.dump_certificate(crypto.FILETYPE_PEM, cert).decode())
-
-
-def _get_cert_issuer_info(crt: str) -> Tuple[Optional[str], Optional[str]]:
- """Basic validation of a CA cert
- """
-
- crt_buffer = crt.encode() if isinstance(crt, str) else crt
- (org_name, cn) = (None, None)
- cert = crypto.load_certificate(crypto.FILETYPE_PEM, crt_buffer)
- components = cert.get_issuer().get_components()
- for c in components:
- if c[0].decode() == 'O': # org comp
- org_name = c[1].decode()
- elif c[0].decode() == 'CN': # common name comp
- cn = c[1].decode()
-
- return (org_name, cn)
+ print(icc.create_self_signed_cert(dname, data['private_key']))
def certificate_days_to_expire(args: Namespace) -> None:
+ icc = InternalCryptoCaller()
crt = sys.stdin.read()
-
- crt_buffer = crt.encode() if isinstance(crt, str) else crt
- x509 = crypto.load_certificate(crypto.FILETYPE_PEM, crt_buffer)
- no_after = x509.get_notAfter()
- if not no_after:
- print("Certificate does not have an expiration date.", file=sys.stderr)
- sys.exit(1)
-
- end_date = datetime.datetime.strptime(no_after.decode(), '%Y%m%d%H%M%SZ')
-
- if x509.has_expired():
- org, cn = _get_cert_issuer_info(crt)
- msg = 'Certificate issued by "%s/%s" expired on %s' % (org, cn, end_date)
- print(msg, file=sys.stderr)
+ try:
+ days_until_exp = icc.certificate_days_to_expire(crt)
+ except InternalError as err:
+ print(str(err), file=sys.stderr)
sys.exit(1)
-
- # Certificate still valid, calculate and return days until expiration
- with warnings.catch_warnings():
- warnings.simplefilter("ignore")
- days_until_exp = (end_date - datetime.datetime.utcnow()).days
- json.dump({'days_until_expiration': int(days_until_exp)}, sys.stdout)
+ json.dump({'days_until_expiration': days_until_exp}, sys.stdout)
def get_cert_issuer_info(args: Namespace) -> None:
crt = sys.stdin.read()
-
- crt_buffer = crt.encode() if isinstance(crt, str) else crt
- (org_name, cn) = (None, None)
- cert = crypto.load_certificate(crypto.FILETYPE_PEM, crt_buffer)
- components = cert.get_issuer().get_components()
- for c in components:
- if c[0].decode() == 'O': # org comp
- org_name = c[1].decode()
- elif c[0].decode() == 'CN': # common name comp
- cn = c[1].decode()
+ org_name, cn = InternalCryptoCaller().get_cert_issuer_info(crt)
json.dump({'org_name': org_name, 'cn': cn}, sys.stdout)
key = data['key']
try:
- _key = crypto.load_privatekey(crypto.FILETYPE_PEM, key)
- _key.check()
- except (ValueError, crypto.Error) as e:
- _fail_message('Invalid private key: %s' % str(e))
- try:
- crt_buffer = crt.encode() if isinstance(crt, str) else crt
- _crt = crypto.load_certificate(crypto.FILETYPE_PEM, crt_buffer)
- except ValueError as e:
- _fail_message('Invalid certificate key: %s' % str(e))
-
- try:
- context = SSL.Context(SSL.TLSv1_METHOD)
- with warnings.catch_warnings():
- warnings.simplefilter("ignore")
- context.use_certificate(_crt)
- context.use_privatekey(_key)
-
- context.check_privatekey()
- except crypto.Error as e:
- _fail_message('Private key and certificate do not match up: %s' % str(e))
- except SSL.Error as e:
- _fail_message(f'Invalid cert/key pair: {e}')
+ InternalCryptoCaller().verify_tls(crt, key)
+ except ValueError as err:
+ json.dump({'error': str(err)}, sys.stdout)
json.dump({'ok': True}, sys.stdout) # need to emit something on success