62 lines
2.1 KiB
Python
62 lines
2.1 KiB
Python
from cryptography import x509
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from cryptography.x509.oid import NameOID
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from cryptography.hazmat.primitives import hashes, serialization
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from cryptography.hazmat.primitives.asymmetric import rsa
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import datetime
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class AutoCertGen:
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def __init__(self):
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pass
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def gen_cert(self):
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# Generate private key
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private_key = rsa.generate_private_key(
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public_exponent=65537,
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key_size=2048,
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)
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# Define subject and issuer (self-signed)
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subject = issuer = x509.Name(
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[
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x509.NameAttribute(NameOID.COUNTRY_NAME, "ZZ"),
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x509.NameAttribute(NameOID.STATE_OR_PROVINCE_NAME, "Some province"),
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x509.NameAttribute(NameOID.LOCALITY_NAME, "Some place"),
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x509.NameAttribute(NameOID.ORGANIZATION_NAME, "Some org"),
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x509.NameAttribute(NameOID.COMMON_NAME, "localhost"),
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]
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)
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# Create certificate
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certificate = (
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x509.CertificateBuilder()
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.subject_name(subject)
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.issuer_name(issuer)
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.public_key(private_key.public_key())
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.serial_number(x509.random_serial_number())
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.not_valid_before(datetime.datetime.utcnow())
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.not_valid_after(
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datetime.datetime.utcnow() + datetime.timedelta(days=365)
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) # 1 year validity
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.add_extension(
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x509.SubjectAlternativeName([x509.DNSName("localhost")]), critical=False
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)
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.sign(private_key, hashes.SHA256())
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)
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# Save private key
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with open("key.pem", "wb") as f:
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f.write(
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private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.TraditionalOpenSSL,
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encryption_algorithm=serialization.NoEncryption(),
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)
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)
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# Save certificate
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with open("cert.pem", "wb") as f:
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f.write(certificate.public_bytes(serialization.Encoding.PEM))
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print("Self-signed certificate and private key generated for HTTPS server!")
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