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from asyncua.crypto import uacrypto
import sys
import logging
sys.path.append('..')
class CertificateHandler:
def __init__(self):
self._trusted_certificates = {}
async def trust_certificate(self, certificate_path: str, format: str = None, label: str = None):
certificate = await uacrypto.load_certificate(certificate_path, format)
if label is None:
label = certificate_path
if label in self._trusted_certificates:
logging.warning(f"certificate with label {label} "
f"attempted to be added multiple times, only the last version will be kept.")
self._trusted_certificates[label] = uacrypto.der_from_x509(certificate)
def __contains__(self, certificate):
return any(certificate == prospective_cert
for prospective_cert
in self._trusted_certificates.values())
FreeOpcUa /
opcua-asyncio
