ListKeyPolicies与 AWS SDK 或 CLI 配合使用

获取 KMS 密钥的密钥策略名称

以下 list-key-policies 示例获取示例账户和区域中客户托管密钥的密钥策略名称。您可以使用此命令查找托管密钥和客户 AWS 托管密钥的密钥策略名称。

由于唯一有效的密钥策略名称是 default，因此，此命令没有用。

要指定 KMS 密钥，请使用 key-id 参数。此示例使用密钥 ID 值，但您可以在此命令中使用密钥 ID 或密钥 ARN。

aws kms list-key-policies \
    --key-id 1234abcd-12ab-34cd-56ef-1234567890ab

输出：

{
    "PolicyNames": [
    "default"
    ]
}

有关 AWS KMS 密钥策略的更多信息，请参阅《密钥管理服务开发人员指南》中的在 AWS KMS 中使用AWS 密钥策略。

    /**
     * Asynchronously retrieves the key policy for the specified key ID and policy name.
     *
     * @param keyId       the ID of the AWS KMS key for which to retrieve the policy
     * @param policyName the name of the key policy to retrieve
     * @return a {@link CompletableFuture} that, when completed, contains the key policy as a {@link String}
     */
    public CompletableFuture<String> getKeyPolicyAsync(String keyId, String policyName) {
        GetKeyPolicyRequest policyRequest = GetKeyPolicyRequest.builder()
            .keyId(keyId)
            .policyName(policyName)
            .build();

        return getAsyncClient().getKeyPolicy(policyRequest)
            .thenApply(response -> {
                String policy = response.policy();
                logger.info("The response is: " + policy);
                return policy;
            })
            .exceptionally(ex -> {
                throw new RuntimeException("Failed to get key policy", ex);
            });
    }

class KeyPolicy:
    def __init__(self, kms_client):
        self.kms_client = kms_client

    @classmethod
    def from_client(cls) -> "KeyPolicy":
        """
        Creates a KeyPolicy instance with a default KMS client.

        :return: An instance of KeyPolicy initialized with the default KMS client.
        """
        kms_client = boto3.client("kms")
        return cls(kms_client)


    def list_policies(self, key_id):
        """
        Lists the names of the policies for a key.

        :param key_id: The ARN or ID of the key to query.
        """
        try:
            policy_names = self.kms_client.list_key_policies(KeyId=key_id)[
                "PolicyNames"
            ]
        except ClientError as err:
            logging.error(
                "Couldn't list your policies. Here's why: %s",
                err.response["Error"]["Message"],
            )
            raise
        else:
            print(f"The policies for key {key_id} are:")
            pprint(policy_names)