1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
from datetime import datetime, timedelta, timezone
from pathlib import Path
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives.hashes import SHA256
from cryptography.hazmat.primitives.serialization import (
Encoding,
NoEncryption,
PrivateFormat,
)
from cryptography.x509 import (
CertificateBuilder,
DNSName,
Name,
NameAttribute,
SubjectAlternativeName,
random_serial_number,
)
from cryptography.x509.oid import NameOID
# https://cryptography.io/en/latest/x509/tutorial/#creating-a-self-signed-certificate
def generate_keys():
folder = Path(__file__).parent
key = rsa.generate_private_key(
public_exponent=65537,
key_size=2048,
backend=default_backend(),
)
(folder / "localhost.key").write_bytes(
key.private_bytes(
encoding=Encoding.PEM,
format=PrivateFormat.TraditionalOpenSSL,
encryption_algorithm=NoEncryption(),
),
)
subject = issuer = Name(
[
NameAttribute(NameOID.COUNTRY_NAME, "IE"),
NameAttribute(NameOID.ORGANIZATION_NAME, "Scrapy"),
NameAttribute(NameOID.COMMON_NAME, "localhost"),
]
)
cert = (
CertificateBuilder()
.subject_name(subject)
.issuer_name(issuer)
.public_key(key.public_key())
.serial_number(random_serial_number())
.not_valid_before(datetime.now(tz=timezone.utc))
.not_valid_after(datetime.now(tz=timezone.utc) + timedelta(days=10))
.add_extension(
SubjectAlternativeName([DNSName("localhost")]),
critical=False,
)
.sign(key, SHA256(), default_backend())
)
(folder / "localhost.crt").write_bytes(cert.public_bytes(Encoding.PEM))
|
