CrowdTLS-server/crowdtls/helpers.py

30 lines
1 KiB
Python

from typing import List
from cryptography import x509
from cryptography.hazmat.backends import default_backend
from crowdtls.db import CertificateChain
def decode_der(raw_der_certificate: List[int]) -> CertificateChain:
# Convert list of integers to bytes
der_cert_bytes = bytes(raw_der_certificate)
# Parse the DER certificate
cert = x509.load_der_x509_certificate(der_cert_bytes, default_backend())
certificate_chain = CertificateChain(
raw_der_certificate=der_cert_bytes,
version=cert.version.value,
serial_number=cert.serial_number,
signature=cert.signature,
issuer=cert.issuer.rfc4514_string(),
validity={"not_valid_before": cert.not_valid_before, "not_valid_after": cert.not_valid_after},
subject=cert.subject.rfc4514_string(),
subject_public_key_info=cert.public_key().public_bytes(),
issuer_unique_id=cert.issuer_unique_id,
subject_unique_id=cert.subject_unique_id,
extensions=[str(ext) for ext in cert.extensions],
)
return certificate_chain