105 lines
3.4 KiB
Python
105 lines
3.4 KiB
Python
"""Wrappers to de/encode and de/inflate strings"""
|
|
import base64
|
|
import datetime
|
|
import uuid
|
|
import zlib
|
|
|
|
from cryptography import x509
|
|
from cryptography.hazmat.backends import default_backend
|
|
from cryptography.hazmat.primitives import hashes, serialization
|
|
from cryptography.hazmat.primitives.asymmetric import rsa
|
|
from cryptography.x509.oid import NameOID
|
|
|
|
|
|
def decode_base64_and_inflate(b64string):
|
|
"""Base64 decode and ZLib decompress b64string"""
|
|
decoded_data = base64.b64decode(b64string)
|
|
return zlib.decompress(decoded_data, -15)
|
|
|
|
|
|
def deflate_and_base64_encode(string_val):
|
|
"""Base64 and ZLib Compress b64string"""
|
|
zlibbed_str = zlib.compress(string_val)
|
|
compressed_string = zlibbed_str[2:-4]
|
|
return base64.b64encode(compressed_string)
|
|
|
|
|
|
def nice64(src):
|
|
""" Returns src base64-encoded and formatted nicely for our XML. """
|
|
return base64.b64encode(src).decode("utf-8").replace("\n", "")
|
|
|
|
|
|
class CertificateBuilder:
|
|
"""Build self-signed certificates"""
|
|
|
|
__public_key = None
|
|
__private_key = None
|
|
__builder = None
|
|
__certificate = None
|
|
|
|
def __init__(self):
|
|
self.__public_key = None
|
|
self.__private_key = None
|
|
self.__builder = None
|
|
self.__certificate = None
|
|
|
|
def build(self):
|
|
"""Build self-signed certificate"""
|
|
one_day = datetime.timedelta(1, 0, 0)
|
|
self.__private_key = rsa.generate_private_key(
|
|
public_exponent=65537, key_size=2048, backend=default_backend()
|
|
)
|
|
self.__public_key = self.__private_key.public_key()
|
|
self.__builder = (
|
|
x509.CertificateBuilder()
|
|
.subject_name(
|
|
x509.Name(
|
|
[
|
|
x509.NameAttribute(
|
|
NameOID.COMMON_NAME,
|
|
u"passbook Self-signed SAML Certificate",
|
|
),
|
|
x509.NameAttribute(NameOID.ORGANIZATION_NAME, u"passbook"),
|
|
x509.NameAttribute(
|
|
NameOID.ORGANIZATIONAL_UNIT_NAME, u"Self-signed"
|
|
),
|
|
]
|
|
)
|
|
)
|
|
.issuer_name(
|
|
x509.Name(
|
|
[
|
|
x509.NameAttribute(
|
|
NameOID.COMMON_NAME,
|
|
u"passbook Self-signed SAML Certificate",
|
|
),
|
|
]
|
|
)
|
|
)
|
|
.not_valid_before(datetime.datetime.today() - one_day)
|
|
.not_valid_after(datetime.datetime.today() + datetime.timedelta(days=365))
|
|
.serial_number(int(uuid.uuid4()))
|
|
.public_key(self.__public_key)
|
|
)
|
|
self.__certificate = self.__builder.sign(
|
|
private_key=self.__private_key,
|
|
algorithm=hashes.SHA256(),
|
|
backend=default_backend(),
|
|
)
|
|
|
|
@property
|
|
def private_key(self):
|
|
"""Return private key in PEM format"""
|
|
return self.__private_key.private_bytes(
|
|
encoding=serialization.Encoding.PEM,
|
|
format=serialization.PrivateFormat.TraditionalOpenSSL,
|
|
encryption_algorithm=serialization.NoEncryption(),
|
|
).decode("utf-8")
|
|
|
|
@property
|
|
def certificate(self):
|
|
"""Return certificate in PEM format"""
|
|
return self.__certificate.public_bytes(
|
|
encoding=serialization.Encoding.PEM,
|
|
).decode("utf-8")
|