搭DescribeKey配 AWS SDK或使用 CLI

    using System;
    using System.Threading.Tasks;
    using Amazon.KeyManagementService;
    using Amazon.KeyManagementService.Model;

    /// <summary>
    /// Retrieve information about an AWS Key Management Service (AWS KMS) key.
    /// You can supply either the key Id or the key Amazon Resource Name (ARN)
    /// to the DescribeKeyRequest KeyId property.
    /// </summary>
    public class DescribeKey
    {
        public static async Task Main()
        {
            var keyId = "7c9eccc2-38cb-4c4f-9db3-766ee8dd3ad4";
            var request = new DescribeKeyRequest
            {
                KeyId = keyId,
            };

            var client = new AmazonKeyManagementServiceClient();

            var response = await client.DescribeKeyAsync(request);
            var metadata = response.KeyMetadata;

            Console.WriteLine($"{metadata.KeyId} created on: {metadata.CreationDate}");
            Console.WriteLine($"State: {metadata.KeyState}");
            Console.WriteLine($"{metadata.Description}");
        }
    }

範例 1：尋找KMS金鑰的詳細資訊

下列describe-key範例會在範例帳戶和區域中取得 Amazon S3 AWS 受管金鑰的詳細資訊。您可以使用此命令來尋找有關 AWS 受管理金鑰和客戶管理金鑰的詳細資料。

若要指定KMS關鍵字，請使用key-id參數。此範例使用別名名稱值，但您可以ARN在此指令中使用索引鍵 ID ARN、金鑰、別名或別名。

aws kms describe-key \
    --key-id alias/aws/s3

輸出：

{
    "KeyMetadata": {
        "AWSAccountId": "846764612917",
        "KeyId": "b8a9477d-836c-491f-857e-07937918959b",
        "Arn": "arn:aws:kms:us-west-2:846764612917:key/b8a9477d-836c-491f-857e-07937918959b",
        "CreationDate": 2017-06-30T21:44:32.140000+00:00,
        "Enabled": true,
        "Description": "Default KMS key that protects my S3 objects when no other key is defined",
        "KeyUsage": "ENCRYPT_DECRYPT",
        "KeyState": "Enabled",
        "Origin": "AWS_KMS",
        "KeyManager": "AWS",
        "CustomerMasterKeySpec": "SYMMETRIC_DEFAULT",
        "EncryptionAlgorithms": [
            "SYMMETRIC_DEFAULT"
        ]
    }
}

如需詳細資訊，請參閱金AWS 鑰管理服務開發人員指南中的檢視金鑰。

範例 2：取得RSA非對稱KMS金鑰的詳細資訊

下列describe-key範例會取得有關用於簽署和驗證的非對稱RSAKMS金鑰的詳細資訊。

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

輸出：

{
    "KeyMetadata": {
        "AWSAccountId": "111122223333",
        "KeyId": "1234abcd-12ab-34cd-56ef-1234567890ab",
        "Arn": "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab",
        "CreationDate": "2019-12-02T19:47:14.861000+00:00",
        "CustomerMasterKeySpec": "RSA_2048",
        "Enabled": false,
        "Description": "",
        "KeyState": "Disabled",
        "Origin": "AWS_KMS",
        "MultiRegion": false,
        "KeyManager": "CUSTOMER",
        "KeySpec": "RSA_2048",
        "KeyUsage": "SIGN_VERIFY",
        "SigningAlgorithms": [
            "RSASSA_PKCS1_V1_5_SHA_256",
            "RSASSA_PKCS1_V1_5_SHA_384",
            "RSASSA_PKCS1_V1_5_SHA_512",
            "RSASSA_PSS_SHA_256",
            "RSASSA_PSS_SHA_384",
            "RSASSA_PSS_SHA_512"
        ]
    }
}

範例 3：取得有關多區域複本金鑰的詳細資料

下列describe-key範例會取得多區域複本金鑰的中繼資料。此多區域金鑰是對稱式加密金鑰。任何多區域索引鍵的describe-key命令輸出會傳回主索引鍵及其所有複本的相關資訊。

aws kms describe-key \
    --key-id arn:aws:kms:ap-northeast-1:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab

輸出：

{
    "KeyMetadata": {
        "MultiRegion": true,
        "AWSAccountId": "111122223333",
        "Arn": "arn:aws:kms:ap-northeast-1:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab",
        "CreationDate": "2021-06-28T21:09:16.114000+00:00",
        "Description": "",
        "Enabled": true,
        "KeyId": "mrk-1234abcd12ab34cd56ef1234567890ab",
        "KeyManager": "CUSTOMER",
        "KeyState": "Enabled",
        "KeyUsage": "ENCRYPT_DECRYPT",
        "Origin": "AWS_KMS",
        "CustomerMasterKeySpec": "SYMMETRIC_DEFAULT",
        "EncryptionAlgorithms": [
            "SYMMETRIC_DEFAULT"
        ],
        "MultiRegionConfiguration": {
            "MultiRegionKeyType": "PRIMARY",
            "PrimaryKey": {
                "Arn": "arn:aws:kms:us-west-2:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab",
                "Region": "us-west-2"
            },
            "ReplicaKeys": [
                {
                    "Arn": "arn:aws:kms:eu-west-1:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab",
                    "Region": "eu-west-1"
                },
                {
                    "Arn": "arn:aws:kms:ap-northeast-1:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab",
                    "Region": "ap-northeast-1"
                },
                {
                    "Arn": "arn:aws:kms:sa-east-1:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab",
                    "Region": "sa-east-1"
                }
            ]
        }
    }
}

範例 4：取得HMACKMS金鑰的詳細資訊

下列describe-key範例會取得HMACKMS金鑰的詳細資訊。

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

輸出：

{
    "KeyMetadata": {
        "AWSAccountId": "123456789012",
        "KeyId": "1234abcd-12ab-34cd-56ef-1234567890ab",
        "Arn": "arn:aws:kms:us-west-2:123456789012:key/1234abcd-12ab-34cd-56ef-1234567890ab",
        "CreationDate": "2022-04-03T22:23:10.194000+00:00",
        "Enabled": true,
        "Description": "Test key",
        "KeyUsage": "GENERATE_VERIFY_MAC",
        "KeyState": "Enabled",
        "Origin": "AWS_KMS",
        "KeyManager": "CUSTOMER",
        "CustomerMasterKeySpec": "HMAC_256",
        "MacAlgorithms": [
            "HMAC_SHA_256"
        ],
        "MultiRegion": false
    }
}

    public static boolean isKeyEnabled(KmsClient kmsClient, String keyId) {
        try {
            DescribeKeyRequest keyRequest = DescribeKeyRequest.builder()
                .keyId(keyId)
                .build();

            DescribeKeyResponse response = kmsClient.describeKey(keyRequest);
            KeyState keyState = response.keyMetadata().keyState();
            if (keyState == KeyState.ENABLED) {
                System.out.println("The key is enabled.");
                return true;
            } else {
                System.out.println("The key is not enabled. Key state: " + keyState);
            }

        } catch (KmsException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
        return false;
    }

suspend fun describeSpecifcKey(keyIdVal: String?) {
    val request =
        DescribeKeyRequest {
            keyId = keyIdVal
        }

    KmsClient { region = "us-west-2" }.use { kmsClient ->
        val response = kmsClient.describeKey(request)
        println("The key description is ${response.keyMetadata?.description}")
        println("The key ARN is ${response.keyMetadata?.arn}")
    }
}

class KeyManager:
    def __init__(self, kms_client):
        self.kms_client = kms_client
        self.created_keys = []


    def describe_key(self):
        """
        Describes a key.
        """
        key_id = input("Enter a key ID or ARN here to get information about the key: ")
        if key_id:
            try:
                key = self.kms_client.describe_key(KeyId=key_id)["KeyMetadata"]
            except ClientError as err:
                logging.error(
                    "Couldn't get key '%s'. Here's why: %s",
                    key_id,
                    err.response["Error"]["Message"],
                )
            else:
                print(f"Got key {key_id}:")
                pprint(key)
        return key_id