def METHOD_NAME(self):
    """
    Read certificate stream and password to unlock.
    Public cert and private key combined into one file,
    must be base64 encoded version of the PKCS12 password
    protected version of the cert-key combo file.
    :return: base64 decoded byte stream of the cert/key file, password to decrypt
    :rtype: tuple(bytes, str)
    """
    password = self.protected_secrets_manager.get(self.CERT_PASS_KEY)
    file_path = self.protected_secrets_manager.get(self.CERT_PATH)
    with open(file_path, "r", encoding="utf-8") as encoded:
        base64_stream = base64.b64decode(encoded.read())
    return base64_stream, password