本文整理汇总了Python中cryptography.x509.oid.ExtensionOID.KEY_USAGE属性的典型用法代码示例。如果您正苦于以下问题：Python ExtensionOID.KEY_USAGE属性的具体用法？Python ExtensionOID.KEY_USAGE怎么用？Python ExtensionOID.KEY_USAGE使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类cryptography.x509.oid.ExtensionOID的用法示例。
在下文中一共展示了ExtensionOID.KEY_USAGE属性的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: is_ca
# 需要导入模块: from cryptography.x509.oid import ExtensionOID [as 别名]
# 或者: from cryptography.x509.oid.ExtensionOID import KEY_USAGE [as 别名]
def is_ca(certificate):
# TODO: test self signed if no extensions found
extensions = certificate.extensions
try:
return extensions.get_extension_for_oid(ExtensionOID.BASIC_CONSTRAINTS).value.ca
except x509.ExtensionNotFound:
try:
return extensions.get_extension_for_oid(ExtensionOID.KEY_USAGE).value.key_cert_sign
except x509.ExtensionNotFound:
pass
return False 示例2: key_usage
# 需要导入模块: from cryptography.x509.oid import ExtensionOID [as 别名]
# 或者: from cryptography.x509.oid.ExtensionOID import KEY_USAGE [as 别名]
def key_usage(self):
"""The :py:class:`~django_ca.extensions.KeyUsage` extension, or ``None`` if it doesn't exist."""
ext = self.get_x509_extension(ExtensionOID.KEY_USAGE)
if ext is not None:
return KeyUsage(ext)