Container for the parameters to the DescribeKey operation.
Provides detailed information about a KMS key. You can run DescribeKey on a
customer
managed key or an Amazon
Web Services managed key.
This detailed information includes the key ARN, creation date (and deletion date,
if applicable), the key state, and the origin and expiration date (if any) of the
key material. It includes fields, like KeySpec, that help you distinguish different
types of KMS keys. It also displays the key usage (encryption, signing, or generating
and verifying MACs) and the algorithms that the KMS key supports.
For multi-Region
keys, DescribeKey displays the primary key and all related replica keys.
For KMS keys in CloudHSM
key stores, it includes information about the key store, such as the key store
ID and the CloudHSM cluster ID. For KMS keys in external
key stores, it includes the custom key store ID and the ID of the external key.
DescribeKey does not return the following information:
Aliases associated with the KMS key. To get this information, use ListAliases.
Whether automatic key rotation is enabled on the KMS key. To get this information, use GetKeyRotationStatus. Also, some key states prevent a KMS key from being automatically rotated. For details, see How Automatic Key Rotation Works in the Key Management Service Developer Guide.
Tags on the KMS key. To get this information, use ListResourceTags.
Key policies and grants on the KMS key. To get this information, use GetKeyPolicy and ListGrants.
In general, DescribeKey is a non-mutating operation. It returns data about
KMS keys, but doesn't change them. However, Amazon Web Services services use DescribeKey
to create Amazon
Web Services managed keys from a predefined Amazon Web Services alias with
no key ID.
Cross-account use: Yes. To perform this operation with a KMS key in a different
Amazon Web Services account, specify the key ARN or alias ARN in the value of the
KeyId parameter.
Required permissions: kms:DescribeKey (key policy)
Related operations:
Eventual consistency: The KMS API follows an eventual consistency model. For more information, see KMS eventual consistency.
Inheritance Hierarchy
Amazon.Runtime.AmazonWebServiceRequest
Amazon.KeyManagementService.AmazonKeyManagementServiceRequest
Amazon.KeyManagementService.Model.DescribeKeyRequest
Namespace: Amazon.KeyManagementService.Model
Assembly: AWSSDK.KeyManagementService.dll
Version: 3.x.y.z
Syntax
public class DescribeKeyRequest : AmazonKeyManagementServiceRequest IAmazonWebServiceRequest
The DescribeKeyRequest type exposes the following members
Constructors
| Name | Description | |
|---|---|---|
|
DescribeKeyRequest() |
Properties
| Name | Type | Description | |
|---|---|---|---|
|
|
GrantTokens | System.Collections.Generic.List<System.String> |
Gets and sets the property GrantTokens. A list of grant tokens. Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide. |
|
|
KeyId | System.String |
Gets and sets the property KeyId. Describes the specified KMS key.
If you specify a predefined Amazon Web Services alias (an Amazon Web Services alias
with no key ID), KMS associates the alias with an Amazon
Web Services managed key and returns its
To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using
an alias name, prefix it with For example:
To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases. |
Examples
The following example gets metadata for a symmetric encryption KMS key.
To get details about a KMS key
var client = new AmazonKeyManagementServiceClient();
var response = client.DescribeKey(new DescribeKeyRequest
{
KeyId = "1234abcd-12ab-34cd-56ef-1234567890ab" // An identifier for the KMS key. You can use the key ID, key ARN, alias name, alias ARN of the KMS key.
});
KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the specified KMS key.
The following example gets metadata for an asymmetric RSA KMS key used for signing and verification.
To get details about an RSA asymmetric KMS key
var client = new AmazonKeyManagementServiceClient();
var response = client.DescribeKey(new DescribeKeyRequest
{
KeyId = "1234abcd-12ab-34cd-56ef-1234567890ab" // An identifier for the KMS key. You can use the key ID, key ARN, alias name, alias ARN of the KMS key.
});
KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the specified KMS key.
The following example gets metadata for a multi-Region replica key. This multi-Region key is a symmetric encryption key. DescribeKey returns information about the primary key and all of its replicas.
To get details about a multi-Region key
var client = new AmazonKeyManagementServiceClient();
var response = client.DescribeKey(new DescribeKeyRequest
{
KeyId = "arn:aws:kms:ap-northeast-1:111122223333:key/mrk-1234abcd12ab34cd56ef1234567890ab" // An identifier for the KMS key. You can use the key ID, key ARN, alias name, alias ARN of the KMS key.
});
KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the specified KMS key.
The following example gets the metadata of an HMAC KMS key.
To get details about an HMAC KMS key
var client = new AmazonKeyManagementServiceClient();
var response = client.DescribeKey(new DescribeKeyRequest
{
KeyId = "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab" // An identifier for the KMS key. You can use the key ID, key ARN, alias name, alias ARN of the KMS key.
});
KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the specified KMS key.
The following example gets the metadata of a KMS key in an AWS CloudHSM key store.
To get details about a KMS key in an AWS CloudHSM key store
var client = new AmazonKeyManagementServiceClient();
var response = client.DescribeKey(new DescribeKeyRequest
{
KeyId = "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab" // An identifier for the KMS key. You can use the key ID, key ARN, alias name, alias ARN of the KMS key.
});
KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the specified KMS key.
The following example gets the metadata of a KMS key in an external key store.
To get details about a KMS key in an external key store
var client = new AmazonKeyManagementServiceClient();
var response = client.DescribeKey(new DescribeKeyRequest
{
KeyId = "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab" // An identifier for the KMS key. You can use the key ID, key ARN, alias name, alias ARN of the KMS key.
});
KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the specified KMS key.
Version Information
.NET Core App:
Supported in: 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5, 4.0, 3.5