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Class: Aws::KMS::Client

Inherits:
Seahorse::Client::Base show all
Defined in:
(unknown)

Overview

An API client for AWS Key Management Service. To construct a client, you need to configure a :region and :credentials.

kms = Aws::KMS::Client.new(
  region: region_name,
  credentials: credentials,
  # ...
)

See #initialize for a full list of supported configuration options.

Region

You can configure a default region in the following locations:

  • ENV['AWS_REGION']
  • Aws.config[:region]

Go here for a list of supported regions.

Credentials

Default credentials are loaded automatically from the following locations:

  • ENV['AWS_ACCESS_KEY_ID'] and ENV['AWS_SECRET_ACCESS_KEY']
  • Aws.config[:credentials]
  • The shared credentials ini file at ~/.aws/credentials (more information)
  • From an instance profile when running on EC2

You can also construct a credentials object from one of the following classes:

Alternatively, you configure credentials with :access_key_id and :secret_access_key:

# load credentials from disk
creds = YAML.load(File.read('/path/to/secrets'))

Aws::KMS::Client.new(
  access_key_id: creds['access_key_id'],
  secret_access_key: creds['secret_access_key']
)

Always load your credentials from outside your application. Avoid configuring credentials statically and never commit them to source control.

Instance Attribute Summary

Attributes inherited from Seahorse::Client::Base

#config, #handlers

Constructor collapse

API Operations collapse

Instance Method Summary collapse

Methods inherited from Seahorse::Client::Base

add_plugin, api, #build_request, clear_plugins, define, new, #operation, #operation_names, plugins, remove_plugin, set_api, set_plugins

Methods included from Seahorse::Client::HandlerBuilder

#handle, #handle_request, #handle_response

Constructor Details

#initialize(options = {}) ⇒ Aws::KMS::Client

Constructs an API client.

Options Hash (options):

  • :access_key_id (String)

    Used to set credentials statically. See Plugins::RequestSigner for more details.

  • :convert_params (Boolean) — default: true

    When true, an attempt is made to coerce request parameters into the required types. See Plugins::ParamConverter for more details.

  • :credentials (required, Credentials)

    Your AWS credentials. The following locations will be searched in order for credentials:

    • :access_key_id, :secret_access_key, and :session_token options
    • ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY']
    • HOME/.aws/credentials shared credentials file
    • EC2 instance profile credentials See Plugins::RequestSigner for more details.
  • :endpoint (String)

    A default endpoint is constructed from the :region. See Plugins::RegionalEndpoint for more details.

  • :http_continue_timeout (Float) — default: 1

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :http_idle_timeout (Integer) — default: 5

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :http_open_timeout (Integer) — default: 15

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :http_proxy (String)

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :http_read_timeout (Integer) — default: 60

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :http_wire_trace (Boolean) — default: false

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :log_level (Symbol) — default: :info

    The log level to send messages to the logger at. See Plugins::Logging for more details.

  • :log_formatter (Logging::LogFormatter)

    The log formatter. Defaults to Seahorse::Client::Logging::Formatter.default. See Plugins::Logging for more details.

  • :logger (Logger) — default: nil

    The Logger instance to send log messages to. If this option is not set, logging will be disabled. See Plugins::Logging for more details.

  • :profile (String)

    Used when loading credentials from the shared credentials file at HOME/.aws/credentials. When not specified, 'default' is used. See Plugins::RequestSigner for more details.

  • :raise_response_errors (Boolean) — default: true

    When true, response errors are raised. See Seahorse::Client::Plugins::RaiseResponseErrors for more details.

  • :region (required, String)

    The AWS region to connect to. The region is used to construct the client endpoint. Defaults to ENV['AWS_REGION']. Also checks AMAZON_REGION and AWS_DEFAULT_REGION. See Plugins::RegionalEndpoint for more details.

  • :retry_limit (Integer) — default: 3

    The maximum number of times to retry failed requests. Only ~ 500 level server errors and certain ~ 400 level client errors are retried. Generally, these are throttling errors, data checksum errors, networking errors, timeout errors and auth errors from expired credentials. See Plugins::RetryErrors for more details.

  • :secret_access_key (String)

    Used to set credentials statically. See Plugins::RequestSigner for more details.

  • :session_token (String)

    Used to set credentials statically. See Plugins::RequestSigner for more details.

  • :simple_json (Boolean) — default: false

    Disables request parameter conversion, validation, and formatting. Also disable response data type conversions. This option is useful when you want to ensure the highest level of performance by avoiding overhead of walking request parameters and response data structures.

    When :simple_json is enabled, the request parameters hash must be formatted exactly as the DynamoDB API expects. See Plugins::Protocols::JsonRpc for more details.

  • :ssl_ca_bundle (String)

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :ssl_ca_directory (String)

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :ssl_ca_store (String)

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :ssl_verify_peer (Boolean) — default: true

    See Seahorse::Client::Plugins::NetHttp for more details.

  • :stub_responses (Boolean) — default: false

    Causes the client to return stubbed responses. By default fake responses are generated and returned. You can specify the response data to return or errors to raise by calling ClientStubs#stub_responses. See ClientStubs for more information.

    Please note When response stubbing is enabled, no HTTP requests are made, and retries are disabled. See Plugins::StubResponses for more details.

  • :validate_params (Boolean) — default: true

    When true, request parameters are validated before sending the request. See Plugins::ParamValidator for more details.

Instance Method Details

#cancel_key_deletion(options = {}) ⇒ Types::CancelKeyDeletionResponse

Cancels the deletion of a customer master key (CMK). When this operation is successful, the CMK is set to the Disabled state. To enable a CMK, use EnableKey.

For more information about scheduling and canceling deletion of a CMK, see Deleting Customer Master Keys in the AWS Key Management Service Developer Guide.

Examples:

Example: To cancel deletion of a customer master key (CMK)


# The following example cancels deletion of the specified CMK.

resp = client.cancel_key_deletion({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose deletion you are canceling. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

# resp.to_h outputs the following:
{
  key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK whose deletion you canceled.
}

Request syntax with placeholder values


resp = client.cancel_key_deletion({
  key_id: "KeyIdType", # required
})

Response structure


resp.key_id #=> String

Options Hash (options):

  • :key_id (required, String)

    The unique identifier for the customer master key (CMK) for which to cancel deletion.

    To specify this value, use the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

    To obtain the unique key ID and key ARN for a given CMK, use ListKeys or DescribeKey.

Returns:

See Also:

#create_alias(options = {}) ⇒ Struct

Creates a display name for a customer master key. An alias can be used to identify a key and should be unique. The console enforces a one-to-one mapping between the alias and a key. An alias name can contain only alphanumeric characters, forward slashes (/), underscores (_), and dashes (-). An alias must start with the word "alias" followed by a forward slash (alias/). An alias that begins with "aws" after the forward slash (alias/aws...) is reserved by Amazon Web Services (AWS).

The alias and the key it is mapped to must be in the same AWS account and the same region.

To map an alias to a different key, call UpdateAlias.

Examples:

Example: To create an alias


# The following example creates an alias for the specified customer master key (CMK).

resp = client.create_alias({
  alias_name: "alias/ExampleAlias", # The alias to create. Aliases must begin with 'alias/'. Do not use aliases that begin with 'alias/aws' because they are reserved for use by AWS.
  target_key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose alias you are creating. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.create_alias({
  alias_name: "AliasNameType", # required
  target_key_id: "KeyIdType", # required
})

Options Hash (options):

  • :alias_name (required, String)

    String that contains the display name. The name must start with the word \"alias\" followed by a forward slash (alias/). Aliases that begin with \"alias/AWS\" are reserved.

  • :target_key_id (required, String)

    An identifier of the key for which you are creating the alias. This value cannot be another alias but can be a globally unique identifier or a fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#create_grant(options = {}) ⇒ Types::CreateGrantResponse

Adds a grant to a key to specify who can use the key and under what conditions. Grants are alternate permission mechanisms to key policies.

For more information about grants, see Grants in the AWS Key Management Service Developer Guide.

Examples:

Example: To create a grant


# The following example creates a grant that allows the specified IAM role to encrypt data with the specified customer master key (CMK).

resp = client.create_grant({
  grantee_principal: "arn:aws:iam::111122223333:role/ExampleRole", # The identity that is given permission to perform the operations specified in the grant.
  key_id: "arn:aws:kms:us-east-2:444455556666:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to which the grant applies. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
  operations: [
    "Encrypt", 
    "Decrypt", 
  ], # A list of operations that the grant allows.
})

# resp.to_h outputs the following:
{
  grant_id: "0c237476b39f8bc44e45212e08498fbe3151305030726c0590dd8d3e9f3d6a60", # The unique identifier of the grant.
  grant_token: "AQpAM2RhZTk1MGMyNTk2ZmZmMzEyYWVhOWViN2I1MWM4Mzc0MWFiYjc0ZDE1ODkyNGFlNTIzODZhMzgyZjBlNGY3NiKIAgEBAgB4Pa6VDCWW__MSrqnre1HIN0Grt00ViSSuUjhqOC8OT3YAAADfMIHcBgkqhkiG9w0BBwaggc4wgcsCAQAwgcUGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMmqLyBTAegIn9XlK5AgEQgIGXZQjkBcl1dykDdqZBUQ6L1OfUivQy7JVYO2-ZJP7m6f1g8GzV47HX5phdtONAP7K_HQIflcgpkoCqd_fUnE114mSmiagWkbQ5sqAVV3ov-VeqgrvMe5ZFEWLMSluvBAqdjHEdMIkHMlhlj4ENZbzBfo9Wxk8b8SnwP4kc4gGivedzFXo-dwN8fxjjq_ZZ9JFOj2ijIbj5FyogDCN0drOfi8RORSEuCEmPvjFRMFAwcmwFkN2NPp89amA", # The grant token.
}

Request syntax with placeholder values


resp = client.create_grant({
  key_id: "KeyIdType", # required
  grantee_principal: "PrincipalIdType", # required
  retiring_principal: "PrincipalIdType",
  operations: ["Decrypt"], # accepts Decrypt, Encrypt, GenerateDataKey, GenerateDataKeyWithoutPlaintext, ReEncryptFrom, ReEncryptTo, CreateGrant, RetireGrant, DescribeKey
  constraints: {
    encryption_context_subset: {
      "EncryptionContextKey" => "EncryptionContextValue",
    },
    encryption_context_equals: {
      "EncryptionContextKey" => "EncryptionContextValue",
    },
  },
  grant_tokens: ["GrantTokenType"],
  name: "GrantNameType",
})

Response structure


resp.grant_token #=> String
resp.grant_id #=> String

Options Hash (options):

  • :key_id (required, String)

    The unique identifier for the customer master key (CMK) that the grant applies to.

    To specify this value, use the globally unique key ID or the Amazon Resource Name (ARN) of the key. Examples:

    • Globally unique key ID: 12345678-1234-1234-1234-123456789012

    • Key ARN: arn:aws:kms:us-west-2:123456789012:key/12345678-1234-1234-1234-123456789012

  • :grantee_principal (required, String)

    The principal that is given permission to perform the operations that the grant permits.

    To specify the principal, use the Amazon Resource Name (ARN) of an AWS principal. Valid AWS principals include AWS accounts (root), IAM users, IAM roles, federated users, and assumed role users. For examples of the ARN syntax to use for specifying a principal, see AWS Identity and Access Management (IAM) in the Example ARNs section of the AWS General Reference.

  • :retiring_principal (String)

    The principal that is given permission to retire the grant by using RetireGrant operation.

    To specify the principal, use the Amazon Resource Name (ARN) of an AWS principal. Valid AWS principals include AWS accounts (root), IAM users, federated users, and assumed role users. For examples of the ARN syntax to use for specifying a principal, see AWS Identity and Access Management (IAM) in the Example ARNs section of the AWS General Reference.

  • :operations (Array<String>)

    A list of operations that the grant permits.

  • :constraints (Types::GrantConstraints)

    A structure that you can use to allow certain operations in the grant only when the desired encryption context is present. For more information about encryption context, see Encryption Context in the AWS Key Management Service Developer Guide.

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

  • :name (String)

    A friendly name for identifying the grant. Use this value to prevent unintended creation of duplicate grants when retrying this request.

    When this value is absent, all CreateGrant requests result in a new grant with a unique GrantId even if all the supplied parameters are identical. This can result in unintended duplicates when you retry the CreateGrant request.

    When this value is present, you can retry a CreateGrant request with identical parameters; if the grant already exists, the original GrantId is returned without creating a new grant. Note that the returned grant token is unique with every CreateGrant request, even when a duplicate GrantId is returned. All grant tokens obtained in this way can be used interchangeably.

Returns:

See Also:

#create_key(options = {}) ⇒ Types::CreateKeyResponse

Creates a customer master key (CMK).

You can use a CMK to encrypt small amounts of data (4 KiB or less) directly, but CMKs are more commonly used to encrypt data encryption keys (DEKs), which are used to encrypt raw data. For more information about DEKs and the difference between CMKs and DEKs, see the following:

Examples:

Example: To create a customer master key (CMK)


# The following example creates a CMK.

resp = client.create_key({
  tags: [
    {
      tag_key: "CreatedBy", 
      tag_value: "ExampleUser", 
    }, 
  ], # One or more tags. Each tag consists of a tag key and a tag value.
})

# resp.to_h outputs the following:
{
  key_metadata: {
    aws_account_id: "111122223333", 
    arn: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
    creation_date: Time.parse("2017-01-09T12:00:07-08:00"), 
    description: "", 
    enabled: true, 
    key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", 
    key_state: "Enabled", 
    key_usage: "ENCRYPT_DECRYPT", 
    origin: "AWS_KMS", 
  }, # An object that contains information about the CMK created by this operation.
}

Request syntax with placeholder values


resp = client.create_key({
  policy: "PolicyType",
  description: "DescriptionType",
  key_usage: "ENCRYPT_DECRYPT", # accepts ENCRYPT_DECRYPT
  origin: "AWS_KMS", # accepts AWS_KMS, EXTERNAL
  bypass_policy_lockout_safety_check: false,
  tags: [
    {
      tag_key: "TagKeyType", # required
      tag_value: "TagValueType", # required
    },
  ],
})

Response structure


resp.. #=> String
resp..key_id #=> String
resp..arn #=> String
resp..creation_date #=> Time
resp..enabled #=> true/false
resp..description #=> String
resp..key_usage #=> String, one of "ENCRYPT_DECRYPT"
resp..key_state #=> String, one of "Enabled", "Disabled", "PendingDeletion", "PendingImport"
resp..deletion_date #=> Time
resp..valid_to #=> Time
resp..origin #=> String, one of "AWS_KMS", "EXTERNAL"
resp..expiration_model #=> String, one of "KEY_MATERIAL_EXPIRES", "KEY_MATERIAL_DOES_NOT_EXPIRE"

Options Hash (options):

  • :policy (String)

    The key policy to attach to the CMK.

    If you specify a policy and do not set BypassPolicyLockoutSafetyCheck to true, the policy must meet the following criteria:

    • It must allow the principal that is making the CreateKey request to make a subsequent PutKeyPolicy request on the CMK. This reduces the likelihood that the CMK becomes unmanageable. For more information, refer to the scenario in the Default Key Policy section in the AWS Key Management Service Developer Guide.

    • The principals that are specified in the key policy must exist and be visible to AWS KMS. When you create a new AWS principal (for example, an IAM user or role), you might need to enforce a delay before specifying the new principal in a key policy because the new principal might not immediately be visible to AWS KMS. For more information, see Changes that I make are not always immediately visible in the IAM User Guide.

    If you do not specify a policy, AWS KMS attaches a default key policy to the CMK. For more information, see Default Key Policy in the AWS Key Management Service Developer Guide.

    The policy size limit is 32 KiB (32768 bytes).

  • :description (String)

    A description of the CMK.

    Use a description that helps you decide whether the CMK is appropriate for a task.

  • :key_usage (String)

    The intended use of the CMK.

    You can use CMKs only for symmetric encryption and decryption.

  • :origin (String)

    The source of the CMK\'s key material.

    The default is AWS_KMS, which means AWS KMS creates the key material. When this parameter is set to EXTERNAL, the request creates a CMK without key material so that you can import key material from your existing key management infrastructure. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide.

    The CMK\'s Origin is immutable and is set when the CMK is created.

  • :bypass_policy_lockout_safety_check (Boolean)

    A flag to indicate whether to bypass the key policy lockout safety check.

    Setting this value to true increases the likelihood that the CMK becomes unmanageable. Do not set this value to true indiscriminately.

    For more information, refer to the scenario in the Default Key Policy section in the AWS Key Management Service Developer Guide.

    Use this parameter only when you include a policy in the request and you intend to prevent the principal that is making the request from making a subsequent PutKeyPolicy request on the CMK.

    The default value is false.

  • :tags (Array<Types::Tag>)

    One or more tags. Each tag consists of a tag key and a tag value. Tag keys and tag values are both required, but tag values can be empty (null) strings.

    Use this parameter to tag the CMK when it is created. Alternately, you can omit this parameter and instead tag the CMK after it is created using TagResource.

Returns:

See Also:

#decrypt(options = {}) ⇒ Types::DecryptResponse

Decrypts ciphertext. Ciphertext is plaintext that has been previously encrypted by using any of the following functions:

Note that if a caller has been granted access permissions to all keys (through, for example, IAM user policies that grant Decrypt permission on all resources), then ciphertext encrypted by using keys in other accounts where the key grants access to the caller can be decrypted. To remedy this, we recommend that you do not grant Decrypt access in an IAM user policy. Instead grant Decrypt access only in key policies. If you must grant Decrypt access in an IAM user policy, you should scope the resource to specific keys or to specific trusted accounts.

Examples:

Example: To decrypt data


# The following example decrypts data that was encrypted with a customer master key (CMK) in AWS KMS.

resp = client.decrypt({
  ciphertext_blob: "<binary data>", # The encrypted data (ciphertext).
})

# resp.to_h outputs the following:
{
  key_id: "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The Amazon Resource Name (ARN) of the CMK that was used to decrypt the data.
  plaintext: "<binary data>", # The decrypted (plaintext) data.
}

Request syntax with placeholder values


resp = client.decrypt({
  ciphertext_blob: "data", # required
  encryption_context: {
    "EncryptionContextKey" => "EncryptionContextValue",
  },
  grant_tokens: ["GrantTokenType"],
})

Response structure


resp.key_id #=> String
resp.plaintext #=> IO

Options Hash (options):

  • :ciphertext_blob (required, IO, String)

    Ciphertext to be decrypted. The blob includes metadata.

  • :encryption_context (Hash<String,String>)

    The encryption context. If this was specified in the Encrypt function, it must be specified here or the decryption operation will fail. For more information, see Encryption Context.

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

Returns:

See Also:

#delete_alias(options = {}) ⇒ Struct

Deletes the specified alias. To map an alias to a different key, call UpdateAlias.

Examples:

Example: To delete an alias


# The following example deletes the specified alias.

resp = client.delete_alias({
  alias_name: "alias/ExampleAlias", # The alias to delete.
})

Request syntax with placeholder values


resp = client.delete_alias({
  alias_name: "AliasNameType", # required
})

Options Hash (options):

  • :alias_name (required, String)

    The alias to be deleted. The name must start with the word \"alias\" followed by a forward slash (alias/). Aliases that begin with \"alias/AWS\" are reserved.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#delete_imported_key_material(options = {}) ⇒ Struct

Deletes key material that you previously imported and makes the specified customer master key (CMK) unusable. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide.

When the specified CMK is in the PendingDeletion state, this operation does not change the CMK's state. Otherwise, it changes the CMK's state to PendingImport.

After you delete key material, you can use ImportKeyMaterial to reimport the same key material into the CMK.

Examples:

Example: To delete imported key material


# The following example deletes the imported key material from the specified customer master key (CMK).

resp = client.delete_imported_key_material({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose imported key material you are deleting. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.delete_imported_key_material({
  key_id: "KeyIdType", # required
})

Options Hash (options):

  • :key_id (required, String)

    The identifier of the CMK whose key material to delete. The CMK\'s Origin must be EXTERNAL.

    A valid identifier is the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#describe_key(options = {}) ⇒ Types::DescribeKeyResponse

Provides detailed information about the specified customer master key.

Examples:

Example: To obtain information about a customer master key (CMK)


# The following example returns information (metadata) about the specified CMK.

resp = client.describe_key({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK that you want information about. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

# resp.to_h outputs the following:
{
  key_metadata: {
    aws_account_id: "111122223333", 
    arn: "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
    creation_date: Time.parse("2015-10-12T11:45:07-07:00"), 
    description: "", 
    enabled: true, 
    key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", 
    key_state: "Enabled", 
    key_usage: "ENCRYPT_DECRYPT", 
    origin: "AWS_KMS", 
  }, # An object that contains information about the specified CMK.
}

Request syntax with placeholder values


resp = client.describe_key({
  key_id: "KeyIdType", # required
  grant_tokens: ["GrantTokenType"],
})

Response structure


resp.. #=> String
resp..key_id #=> String
resp..arn #=> String
resp..creation_date #=> Time
resp..enabled #=> true/false
resp..description #=> String
resp..key_usage #=> String, one of "ENCRYPT_DECRYPT"
resp..key_state #=> String, one of "Enabled", "Disabled", "PendingDeletion", "PendingImport"
resp..deletion_date #=> Time
resp..valid_to #=> Time
resp..origin #=> String, one of "AWS_KMS", "EXTERNAL"
resp..expiration_model #=> String, one of "KEY_MATERIAL_EXPIRES", "KEY_MATERIAL_DOES_NOT_EXPIRE"

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier, a fully specified ARN to either an alias or a key, or an alias name prefixed by \"alias/\".

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Alias ARN Example - arn:aws:kms:us-east-1:123456789012:alias/MyAliasName

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

    • Alias Name Example - alias/MyAliasName

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

Returns:

See Also:

#disable_key(options = {}) ⇒ Struct

Sets the state of a customer master key (CMK) to disabled, thereby preventing its use for cryptographic operations. For more information about how key state affects the use of a CMK, see How Key State Affects the Use of a Customer Master Key in the AWS Key Management Service Developer Guide.

Examples:

Example: To disable a customer master key (CMK)


# The following example disables the specified CMK.

resp = client.disable_key({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to disable. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.disable_key({
  key_id: "KeyIdType", # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the CMK.

    Use the CMK\'s unique identifier or its Amazon Resource Name (ARN). For example:

    • Unique ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#disable_key_rotation(options = {}) ⇒ Struct

Disables rotation of the specified key.

Examples:

Example: To disable automatic rotation of key material


# The following example disables automatic annual rotation of the key material for the specified CMK.

resp = client.disable_key_rotation({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose key material will no longer be rotated. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.disable_key_rotation({
  key_id: "KeyIdType", # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#enable_key(options = {}) ⇒ Struct

Marks a key as enabled, thereby permitting its use.

Examples:

Example: To enable a customer master key (CMK)


# The following example enables the specified CMK.

resp = client.enable_key({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to enable. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.enable_key({
  key_id: "KeyIdType", # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#enable_key_rotation(options = {}) ⇒ Struct

Enables rotation of the specified customer master key.

Examples:

Example: To enable automatic rotation of key material


# The following example enables automatic annual rotation of the key material for the specified CMK.

resp = client.enable_key_rotation({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose key material will be rotated annually. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.enable_key_rotation({
  key_id: "KeyIdType", # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#encrypt(options = {}) ⇒ Types::EncryptResponse

Encrypts plaintext into ciphertext by using a customer master key. The Encrypt function has two primary use cases:

  • You can encrypt up to 4 KB of arbitrary data such as an RSA key, a database password, or other sensitive customer information.

  • If you are moving encrypted data from one region to another, you can use this API to encrypt in the new region the plaintext data key that was used to encrypt the data in the original region. This provides you with an encrypted copy of the data key that can be decrypted in the new region and used there to decrypt the encrypted data.

Unless you are moving encrypted data from one region to another, you don't use this function to encrypt a generated data key within a region. You retrieve data keys already encrypted by calling the GenerateDataKey or GenerateDataKeyWithoutPlaintext function. Data keys don't need to be encrypted again by calling Encrypt.

If you want to encrypt data locally in your application, you can use the GenerateDataKey function to return a plaintext data encryption key and a copy of the key encrypted under the customer master key (CMK) of your choosing.

Examples:

Example: To encrypt data


# The following example encrypts data with the specified customer master key (CMK).

resp = client.encrypt({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to use for encryption. You can use the key ID or Amazon Resource Name (ARN) of the CMK, or the name or ARN of an alias that refers to the CMK.
  plaintext: "<binary data>", # The data to encrypt.
})

# resp.to_h outputs the following:
{
  ciphertext_blob: "<binary data>", # The encrypted data (ciphertext).
  key_id: "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK that was used to encrypt the data.
}

Request syntax with placeholder values


resp = client.encrypt({
  key_id: "KeyIdType", # required
  plaintext: "data", # required
  encryption_context: {
    "EncryptionContextKey" => "EncryptionContextValue",
  },
  grant_tokens: ["GrantTokenType"],
})

Response structure


resp.ciphertext_blob #=> IO
resp.key_id #=> String

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier, a fully specified ARN to either an alias or a key, or an alias name prefixed by \"alias/\".

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Alias ARN Example - arn:aws:kms:us-east-1:123456789012:alias/MyAliasName

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

    • Alias Name Example - alias/MyAliasName

  • :plaintext (required, IO, String)

    Data to be encrypted.

  • :encryption_context (Hash<String,String>)

    Name-value pair that specifies the encryption context to be used for authenticated encryption. If used here, the same value must be supplied to the Decrypt API or decryption will fail. For more information, see Encryption Context.

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

Returns:

See Also:

#generate_data_key(options = {}) ⇒ Types::GenerateDataKeyResponse

Returns a data encryption key that you can use in your application to encrypt data locally.

You must specify the customer master key (CMK) under which to generate the data key. You must also specify the length of the data key using either the KeySpec or NumberOfBytes field. You must specify one field or the other, but not both. For common key lengths (128-bit and 256-bit symmetric keys), we recommend that you use KeySpec.

This operation returns a plaintext copy of the data key in the Plaintext field of the response, and an encrypted copy of the data key in the CiphertextBlob field. The data key is encrypted under the CMK specified in the KeyId field of the request.

We recommend that you use the following pattern to encrypt data locally in your application:

  1. Use this operation (GenerateDataKey) to retrieve a data encryption key.

  2. Use the plaintext data encryption key (returned in the Plaintext field of the response) to encrypt data locally, then erase the plaintext data key from memory.

  3. Store the encrypted data key (returned in the CiphertextBlob field of the response) alongside the locally encrypted data.

To decrypt data locally:

  1. Use the Decrypt operation to decrypt the encrypted data key into a plaintext copy of the data key.

  2. Use the plaintext data key to decrypt data locally, then erase the plaintext data key from memory.

To return only an encrypted copy of the data key, use GenerateDataKeyWithoutPlaintext. To return a random byte string that is cryptographically secure, use GenerateRandom.

If you use the optional EncryptionContext field, you must store at least enough information to be able to reconstruct the full encryption context when you later send the ciphertext to the Decrypt operation. It is a good practice to choose an encryption context that you can reconstruct on the fly to better secure the ciphertext. For more information, see Encryption Context in the AWS Key Management Service Developer Guide.

Examples:

Example: To generate a data key


# The following example generates a 256-bit symmetric data encryption key (data key) in two formats. One is the unencrypted (plainext) data key, and the other is the data key encrypted with the specified customer master key (CMK).

resp = client.generate_data_key({
  key_id: "alias/ExampleAlias", # The identifier of the CMK to use to encrypt the data key. You can use the key ID or Amazon Resource Name (ARN) of the CMK, or the name or ARN of an alias that refers to the CMK.
  key_spec: "AES_256", # Specifies the type of data key to return.
})

# resp.to_h outputs the following:
{
  ciphertext_blob: "<binary data>", # The encrypted data key.
  key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK that was used to encrypt the data key.
  plaintext: "<binary data>", # The unencrypted (plaintext) data key.
}

Request syntax with placeholder values


resp = client.generate_data_key({
  key_id: "KeyIdType", # required
  encryption_context: {
    "EncryptionContextKey" => "EncryptionContextValue",
  },
  number_of_bytes: 1,
  key_spec: "AES_256", # accepts AES_256, AES_128
  grant_tokens: ["GrantTokenType"],
})

Response structure


resp.ciphertext_blob #=> IO
resp.plaintext #=> IO
resp.key_id #=> String

Options Hash (options):

  • :key_id (required, String)

    The identifier of the CMK under which to generate and encrypt the data encryption key.

    A valid identifier is the unique key ID or the Amazon Resource Name (ARN) of the CMK, or the alias name or ARN of an alias that refers to the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • CMK ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

    • Alias name: alias/ExampleAlias

    • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

  • :encryption_context (Hash<String,String>)

    A set of key-value pairs that represents additional authenticated data.

    For more information, see Encryption Context in the AWS Key Management Service Developer Guide.

  • :number_of_bytes (Integer)

    The length of the data encryption key in bytes. For example, use the value 64 to generate a 512-bit data key (64 bytes is 512 bits). For common key lengths (128-bit and 256-bit symmetric keys), we recommend that you use the KeySpec field instead of this one.

  • :key_spec (String)

    The length of the data encryption key. Use AES_128 to generate a 128-bit symmetric key, or AES_256 to generate a 256-bit symmetric key.

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

Returns:

See Also:

#generate_data_key_without_plaintext(options = {}) ⇒ Types::GenerateDataKeyWithoutPlaintextResponse

Returns a data encryption key encrypted under a customer master key (CMK). This operation is identical to GenerateDataKey but returns only the encrypted copy of the data key.

This operation is useful in a system that has multiple components with different degrees of trust. For example, consider a system that stores encrypted data in containers. Each container stores the encrypted data and an encrypted copy of the data key. One component of the system, called the control plane, creates new containers. When it creates a new container, it uses this operation (GenerateDataKeyWithoutPlaintext) to get an encrypted data key and then stores it in the container. Later, a different component of the system, called the data plane, puts encrypted data into the containers. To do this, it passes the encrypted data key to the Decrypt operation, then uses the returned plaintext data key to encrypt data, and finally stores the encrypted data in the container. In this system, the control plane never sees the plaintext data key.

Examples:

Example: To generate an encrypted data key


# The following example generates an encrypted copy of a 256-bit symmetric data encryption key (data key). The data key is encrypted with the specified customer master key (CMK).

resp = client.generate_data_key_without_plaintext({
  key_id: "alias/ExampleAlias", # The identifier of the CMK to use to encrypt the data key. You can use the key ID or Amazon Resource Name (ARN) of the CMK, or the name or ARN of an alias that refers to the CMK.
  key_spec: "AES_256", # Specifies the type of data key to return.
})

# resp.to_h outputs the following:
{
  ciphertext_blob: "<binary data>", # The encrypted data key.
  key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK that was used to encrypt the data key.
}

Request syntax with placeholder values


resp = client.generate_data_key_without_plaintext({
  key_id: "KeyIdType", # required
  encryption_context: {
    "EncryptionContextKey" => "EncryptionContextValue",
  },
  key_spec: "AES_256", # accepts AES_256, AES_128
  number_of_bytes: 1,
  grant_tokens: ["GrantTokenType"],
})

Response structure


resp.ciphertext_blob #=> IO
resp.key_id #=> String

Options Hash (options):

  • :key_id (required, String)

    The identifier of the CMK under which to generate and encrypt the data encryption key.

    A valid identifier is the unique key ID or the Amazon Resource Name (ARN) of the CMK, or the alias name or ARN of an alias that refers to the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • CMK ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

    • Alias name: alias/ExampleAlias

    • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

  • :encryption_context (Hash<String,String>)

    A set of key-value pairs that represents additional authenticated data.

    For more information, see Encryption Context in the AWS Key Management Service Developer Guide.

  • :key_spec (String)

    The length of the data encryption key. Use AES_128 to generate a 128-bit symmetric key, or AES_256 to generate a 256-bit symmetric key.

  • :number_of_bytes (Integer)

    The length of the data encryption key in bytes. For example, use the value 64 to generate a 512-bit data key (64 bytes is 512 bits). For common key lengths (128-bit and 256-bit symmetric keys), we recommend that you use the KeySpec field instead of this one.

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

Returns:

See Also:

#generate_random(options = {}) ⇒ Types::GenerateRandomResponse

Returns a random byte string that is cryptographically secure.

For more information about entropy and random number generation, see the AWS Key Management Service Cryptographic Details whitepaper.

Examples:

Example: To generate random data


# The following example uses AWS KMS to generate 32 bytes of random data.

resp = client.generate_random({
  number_of_bytes: 32, # The length of the random data, specified in number of bytes.
})

# resp.to_h outputs the following:
{
  plaintext: "<binary data>", # The random data.
}

Request syntax with placeholder values


resp = client.generate_random({
  number_of_bytes: 1,
})

Response structure


resp.plaintext #=> IO

Options Hash (options):

  • :number_of_bytes (Integer)

    The length of the byte string.

Returns:

See Also:

#get_key_policy(options = {}) ⇒ Types::GetKeyPolicyResponse

Retrieves a policy attached to the specified key.

Examples:

Example: To retrieve a key policy


# The following example retrieves the key policy for the specified customer master key (CMK).

resp = client.get_key_policy({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose key policy you want to retrieve. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
  policy_name: "default", # The name of the key policy to retrieve.
})

# resp.to_h outputs the following:
{
  policy: "{\n  \"Version\" : \"2012-10-17\",\n  \"Id\" : \"key-default-1\",\n  \"Statement\" : [ {\n    \"Sid\" : \"Enable IAM User Permissions\",\n    \"Effect\" : \"Allow\",\n    \"Principal\" : {\n      \"AWS\" : \"arn:aws:iam::111122223333:root\"\n    },\n    \"Action\" : \"kms:*\",\n    \"Resource\" : \"*\"\n  } ]\n}", # The key policy document.
}

Request syntax with placeholder values


resp = client.get_key_policy({
  key_id: "KeyIdType", # required
  policy_name: "PolicyNameType", # required
})

Response structure


resp.policy #=> String

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

  • :policy_name (required, String)

    String that contains the name of the policy. Currently, this must be \"default\". Policy names can be discovered by calling ListKeyPolicies.

Returns:

See Also:

#get_key_rotation_status(options = {}) ⇒ Types::GetKeyRotationStatusResponse

Retrieves a Boolean value that indicates whether key rotation is enabled for the specified key.

Examples:

Example: To retrieve the rotation status for a customer master key (CMK)


# The following example retrieves the status of automatic annual rotation of the key material for the specified CMK.

resp = client.get_key_rotation_status({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose key material rotation status you want to retrieve. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

# resp.to_h outputs the following:
{
  key_rotation_enabled: true, # A boolean that indicates the key material rotation status. Returns true when automatic annual rotation of the key material is enabled, or false when it is not.
}

Request syntax with placeholder values


resp = client.get_key_rotation_status({
  key_id: "KeyIdType", # required
})

Response structure


resp.key_rotation_enabled #=> true/false

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Returns:

See Also:

#get_parameters_for_import(options = {}) ⇒ Types::GetParametersForImportResponse

Returns the items you need in order to import key material into AWS KMS from your existing key management infrastructure. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide.

You must specify the key ID of the customer master key (CMK) into which you will import key material. This CMK's Origin must be EXTERNAL. You must also specify the wrapping algorithm and type of wrapping key (public key) that you will use to encrypt the key material.

This operation returns a public key and an import token. Use the public key to encrypt the key material. Store the import token to send with a subsequent ImportKeyMaterial request. The public key and import token from the same response must be used together. These items are valid for 24 hours, after which they cannot be used for a subsequent ImportKeyMaterial request. To retrieve new ones, send another GetParametersForImport request.

Examples:

Example: To retrieve the public key and import token for a customer master key (CMK)


# The following example retrieves the public key and import token for the specified CMK.

resp = client.get_parameters_for_import({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK for which to retrieve the public key and import token. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
  wrapping_algorithm: "RSAES_OAEP_SHA_1", # The algorithm that you will use to encrypt the key material before importing it.
  wrapping_key_spec: "RSA_2048", # The type of wrapping key (public key) to return in the response.
})

# resp.to_h outputs the following:
{
  import_token: "<binary data>", # The import token to send with a subsequent ImportKeyMaterial request.
  key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK for which you are retrieving the public key and import token. This is the same CMK specified in the request.
  parameters_valid_to: Time.parse("2016-12-01T14:52:17-08:00"), # The time at which the import token and public key are no longer valid.
  public_key: "<binary data>", # The public key to use to encrypt the key material before importing it.
}

Request syntax with placeholder values


resp = client.get_parameters_for_import({
  key_id: "KeyIdType", # required
  wrapping_algorithm: "RSAES_PKCS1_V1_5", # required, accepts RSAES_PKCS1_V1_5, RSAES_OAEP_SHA_1, RSAES_OAEP_SHA_256
  wrapping_key_spec: "RSA_2048", # required, accepts RSA_2048
})

Response structure


resp.key_id #=> String
resp.import_token #=> IO
resp.public_key #=> IO
resp.parameters_valid_to #=> Time

Options Hash (options):

  • :key_id (required, String)

    The identifier of the CMK into which you will import key material. The CMK\'s Origin must be EXTERNAL.

    A valid identifier is the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :wrapping_algorithm (required, String)

    The algorithm you will use to encrypt the key material before importing it with ImportKeyMaterial. For more information, see Encrypt the Key Material in the AWS Key Management Service Developer Guide.

  • :wrapping_key_spec (required, String)

    The type of wrapping key (public key) to return in the response. Only 2048-bit RSA public keys are supported.

Returns:

See Also:

#import_key_material(options = {}) ⇒ Struct

Imports key material into an AWS KMS customer master key (CMK) from your existing key management infrastructure. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide.

You must specify the key ID of the CMK to import the key material into. This CMK's Origin must be EXTERNAL. You must also send an import token and the encrypted key material. Send the import token that you received in the same GetParametersForImport response that contained the public key that you used to encrypt the key material. You must also specify whether the key material expires and if so, when. When the key material expires, AWS KMS deletes the key material and the CMK becomes unusable. To use the CMK again, you can reimport the same key material. If you set an expiration date, you can change it only by reimporting the same key material and specifying a new expiration date.

When this operation is successful, the specified CMK's key state changes to Enabled, and you can use the CMK.

After you successfully import key material into a CMK, you can reimport the same key material into that CMK, but you cannot import different key material.

Examples:

Example: To import key material into a customer master key (CMK)


# The following example imports key material into the specified CMK.

resp = client.import_key_material({
  encrypted_key_material: "<binary data>", # The encrypted key material to import.
  expiration_model: "KEY_MATERIAL_DOES_NOT_EXPIRE", # A value that specifies whether the key material expires.
  import_token: "<binary data>", # The import token that you received in the response to a previous GetParametersForImport request.
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to import the key material into. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.import_key_material({
  key_id: "KeyIdType", # required
  import_token: "data", # required
  encrypted_key_material: "data", # required
  valid_to: Time.now,
  expiration_model: "KEY_MATERIAL_EXPIRES", # accepts KEY_MATERIAL_EXPIRES, KEY_MATERIAL_DOES_NOT_EXPIRE
})

Options Hash (options):

  • :key_id (required, String)

    The identifier of the CMK to import the key material into. The CMK\'s Origin must be EXTERNAL.

    A valid identifier is the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :import_token (required, IO, String)

    The import token that you received in the response to a previous GetParametersForImport request. It must be from the same response that contained the public key that you used to encrypt the key material.

  • :encrypted_key_material (required, IO, String)

    The encrypted key material to import. It must be encrypted with the public key that you received in the response to a previous GetParametersForImport request, using the wrapping algorithm that you specified in that request.

  • :valid_to (Time)

    The time at which the imported key material expires. When the key material expires, AWS KMS deletes the key material and the CMK becomes unusable. You must omit this parameter when the ExpirationModel parameter is set to KEY_MATERIAL_DOES_NOT_EXPIRE. Otherwise it is required.

  • :expiration_model (String)

    Specifies whether the key material expires. The default is KEY_MATERIAL_EXPIRES, in which case you must include the ValidTo parameter. When this parameter is set to KEY_MATERIAL_DOES_NOT_EXPIRE, you must omit the ValidTo parameter.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#list_aliases(options = {}) ⇒ Types::ListAliasesResponse

Lists all of the key aliases in the account.

Examples:

Example: To list aliases


# The following example lists aliases.

resp = client.list_aliases({
})

# resp.to_h outputs the following:
{
  aliases: [
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/aws/acm", 
      alias_name: "alias/aws/acm", 
      target_key_id: "da03f6f7-d279-427a-9cae-de48d07e5b66", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/aws/ebs", 
      alias_name: "alias/aws/ebs", 
      target_key_id: "25a217e7-7170-4b8c-8bf6-045ea5f70e5b", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/aws/rds", 
      alias_name: "alias/aws/rds", 
      target_key_id: "7ec3104e-c3f2-4b5c-bf42-bfc4772c6685", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/aws/redshift", 
      alias_name: "alias/aws/redshift", 
      target_key_id: "08f7a25a-69e2-4fb5-8f10-393db27326fa", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/aws/s3", 
      alias_name: "alias/aws/s3", 
      target_key_id: "d2b0f1a3-580d-4f79-b836-bc983be8cfa5", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/example1", 
      alias_name: "alias/example1", 
      target_key_id: "4da1e216-62d0-46c5-a7c0-5f3a3d2f8046", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/example2", 
      alias_name: "alias/example2", 
      target_key_id: "f32fef59-2cc2-445b-8573-2d73328acbee", 
    }, 
    {
      alias_arn: "arn:aws:kms:us-east-2:111122223333:alias/example3", 
      alias_name: "alias/example3", 
      target_key_id: "1374ef38-d34e-4d5f-b2c9-4e0daee38855", 
    }, 
  ], # A list of aliases, including the key ID of the customer master key (CMK) that each alias refers to.
  truncated: false, # A boolean that indicates whether there are more items in the list. Returns true when there are more items, or false when there are not.
}

Request syntax with placeholder values


resp = client.list_aliases({
  limit: 1,
  marker: "MarkerType",
})

Response structure


resp.aliases #=> Array
resp.aliases[0].alias_name #=> String
resp.aliases[0].alias_arn #=> String
resp.aliases[0].target_key_id #=> String
resp.next_marker #=> String
resp.truncated #=> true/false

Options Hash (options):

  • :limit (Integer)

    Use this parameter to specify the maximum number of items to return. When this value is present, AWS KMS does not return more than the specified number of items, but it might return fewer.

    This value is optional. If you include a value, it must be between 1 and 100, inclusive. If you do not include a value, it defaults to 50.

  • :marker (String)

    Use this parameter in a subsequent request after you receive a response with truncated results. Set it to the value of NextMarker from the truncated response you just received.

Returns:

See Also:

#list_grants(options = {}) ⇒ Types::ListGrantsResponse

List the grants for a specified key.

Examples:

Example: To list grants for a customer master key (CMK)


# The following example lists grants for the specified CMK.

resp = client.list_grants({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose grants you want to list. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

# resp.to_h outputs the following:
{
  grants: [
    {
      creation_date: Time.parse("2016-10-25T14:37:41-07:00"), 
      grant_id: "91ad875e49b04a9d1f3bdeb84d821f9db6ea95e1098813f6d47f0c65fbe2a172", 
      grantee_principal: "acm.us-east-2.amazonaws.com", 
      issuing_account: "arn:aws:iam::111122223333:root", 
      key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
      operations: [
        "Encrypt", 
        "ReEncryptFrom", 
        "ReEncryptTo", 
      ], 
      retiring_principal: "acm.us-east-2.amazonaws.com", 
    }, 
    {
      creation_date: Time.parse("2016-10-25T14:37:41-07:00"), 
      grant_id: "a5d67d3e207a8fc1f4928749ee3e52eb0440493a8b9cf05bbfad91655b056200", 
      grantee_principal: "acm.us-east-2.amazonaws.com", 
      issuing_account: "arn:aws:iam::111122223333:root", 
      key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
      operations: [
        "ReEncryptFrom", 
        "ReEncryptTo", 
      ], 
      retiring_principal: "acm.us-east-2.amazonaws.com", 
    }, 
    {
      creation_date: Time.parse("2016-10-25T14:37:41-07:00"), 
      grant_id: "c541aaf05d90cb78846a73b346fc43e65be28b7163129488c738e0c9e0628f4f", 
      grantee_principal: "acm.us-east-2.amazonaws.com", 
      issuing_account: "arn:aws:iam::111122223333:root", 
      key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
      operations: [
        "Encrypt", 
        "ReEncryptFrom", 
        "ReEncryptTo", 
      ], 
      retiring_principal: "acm.us-east-2.amazonaws.com", 
    }, 
    {
      creation_date: Time.parse("2016-10-25T14:37:41-07:00"), 
      grant_id: "dd2052c67b4c76ee45caf1dc6a1e2d24e8dc744a51b36ae2f067dc540ce0105c", 
      grantee_principal: "acm.us-east-2.amazonaws.com", 
      issuing_account: "arn:aws:iam::111122223333:root", 
      key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
      operations: [
        "Encrypt", 
        "ReEncryptFrom", 
        "ReEncryptTo", 
      ], 
      retiring_principal: "acm.us-east-2.amazonaws.com", 
    }, 
  ], # A list of grants.
  truncated: true, # A boolean that indicates whether there are more items in the list. Returns true when there are more items, or false when there are not.
}

Request syntax with placeholder values


resp = client.list_grants({
  limit: 1,
  marker: "MarkerType",
  key_id: "KeyIdType", # required
})

Response structure


resp.grants #=> Array
resp.grants[0].key_id #=> String
resp.grants[0].grant_id #=> String
resp.grants[0].name #=> String
resp.grants[0].creation_date #=> Time
resp.grants[0].grantee_principal #=> String
resp.grants[0].retiring_principal #=> String
resp.grants[0]. #=> String
resp.grants[0].operations #=> Array
resp.grants[0].operations[0] #=> String, one of "Decrypt", "Encrypt", "GenerateDataKey", "GenerateDataKeyWithoutPlaintext", "ReEncryptFrom", "ReEncryptTo", "CreateGrant", "RetireGrant", "DescribeKey"
resp.grants[0].constraints.encryption_context_subset #=> Hash
resp.grants[0].constraints.encryption_context_subset["EncryptionContextKey"] #=> String
resp.grants[0].constraints.encryption_context_equals #=> Hash
resp.grants[0].constraints.encryption_context_equals["EncryptionContextKey"] #=> String
resp.next_marker #=> String
resp.truncated #=> true/false

Options Hash (options):

  • :limit (Integer)

    Use this parameter to specify the maximum number of items to return. When this value is present, AWS KMS does not return more than the specified number of items, but it might return fewer.

    This value is optional. If you include a value, it must be between 1 and 100, inclusive. If you do not include a value, it defaults to 50.

  • :marker (String)

    Use this parameter in a subsequent request after you receive a response with truncated results. Set it to the value of NextMarker from the truncated response you just received.

  • :key_id (required, String)

    A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Returns:

See Also:

#list_key_policies(options = {}) ⇒ Types::ListKeyPoliciesResponse

Retrieves a list of policies attached to a key.

Examples:

Example: To list key policies for a customer master key (CMK)


# The following example lists key policies for the specified CMK.

resp = client.list_key_policies({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose key policies you want to list. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

# resp.to_h outputs the following:
{
  policy_names: [
    "default", 
  ], # A list of key policy names.
  truncated: false, # A boolean that indicates whether there are more items in the list. Returns true when there are more items, or false when there are not.
}

Request syntax with placeholder values


resp = client.list_key_policies({
  key_id: "KeyIdType", # required
  limit: 1,
  marker: "MarkerType",
})

Response structure


resp.policy_names #=> Array
resp.policy_names[0] #=> String
resp.next_marker #=> String
resp.truncated #=> true/false

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key (CMK). You can use the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :limit (Integer)

    Use this parameter to specify the maximum number of items to return. When this value is present, AWS KMS does not return more than the specified number of items, but it might return fewer.

    This value is optional. If you include a value, it must be between 1 and 1000, inclusive. If you do not include a value, it defaults to 100.

    Currently only 1 policy can be attached to a key.

  • :marker (String)

    Use this parameter in a subsequent request after you receive a response with truncated results. Set it to the value of NextMarker from the truncated response you just received.

Returns:

See Also:

#list_keys(options = {}) ⇒ Types::ListKeysResponse

Lists the customer master keys.

Examples:

Example: To list customer master keys (CMKs)


# The following example lists CMKs.

resp = client.list_keys({
})

# resp.to_h outputs the following:
{
  keys: [
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/0d990263-018e-4e65-a703-eff731de951e", 
      key_id: "0d990263-018e-4e65-a703-eff731de951e", 
    }, 
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/144be297-0ae1-44ac-9c8f-93cd8c82f841", 
      key_id: "144be297-0ae1-44ac-9c8f-93cd8c82f841", 
    }, 
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/21184251-b765-428e-b852-2c7353e72571", 
      key_id: "21184251-b765-428e-b852-2c7353e72571", 
    }, 
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/214fe92f-5b03-4ae1-b350-db2a45dbe10c", 
      key_id: "214fe92f-5b03-4ae1-b350-db2a45dbe10c", 
    }, 
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/339963f2-e523-49d3-af24-a0fe752aa458", 
      key_id: "339963f2-e523-49d3-af24-a0fe752aa458", 
    }, 
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/b776a44b-df37-4438-9be4-a27494e4271a", 
      key_id: "b776a44b-df37-4438-9be4-a27494e4271a", 
    }, 
    {
      key_arn: "arn:aws:kms:us-east-2:111122223333:key/deaf6c9e-cf2c-46a6-bf6d-0b6d487cffbb", 
      key_id: "deaf6c9e-cf2c-46a6-bf6d-0b6d487cffbb", 
    }, 
  ], # A list of CMKs, including the key ID and Amazon Resource Name (ARN) of each one.
  truncated: false, # A boolean that indicates whether there are more items in the list. Returns true when there are more items, or false when there are not.
}

Request syntax with placeholder values


resp = client.list_keys({
  limit: 1,
  marker: "MarkerType",
})

Response structure


resp.keys #=> Array
resp.keys[0].key_id #=> String
resp.keys[0].key_arn #=> String
resp.next_marker #=> String
resp.truncated #=> true/false

Options Hash (options):

  • :limit (Integer)

    Use this parameter to specify the maximum number of items to return. When this value is present, AWS KMS does not return more than the specified number of items, but it might return fewer.

    This value is optional. If you include a value, it must be between 1 and 1000, inclusive. If you do not include a value, it defaults to 100.

  • :marker (String)

    Use this parameter in a subsequent request after you receive a response with truncated results. Set it to the value of NextMarker from the truncated response you just received.

Returns:

See Also:

#list_resource_tags(options = {}) ⇒ Types::ListResourceTagsResponse

Returns a list of all tags for the specified customer master key (CMK).

Examples:

Example: To list tags for a customer master key (CMK)


# The following example lists tags for a CMK.

resp = client.list_resource_tags({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose tags you are listing. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

# resp.to_h outputs the following:
{
  tags: [
    {
      tag_key: "CostCenter", 
      tag_value: "87654", 
    }, 
    {
      tag_key: "CreatedBy", 
      tag_value: "ExampleUser", 
    }, 
    {
      tag_key: "Purpose", 
      tag_value: "Test", 
    }, 
  ], # A list of tags.
  truncated: false, # A boolean that indicates whether there are more items in the list. Returns true when there are more items, or false when there are not.
}

Request syntax with placeholder values


resp = client.list_resource_tags({
  key_id: "KeyIdType", # required
  limit: 1,
  marker: "MarkerType",
})

Response structure


resp.tags #=> Array
resp.tags[0].tag_key #=> String
resp.tags[0].tag_value #=> String
resp.next_marker #=> String
resp.truncated #=> true/false

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the CMK whose tags you are listing. You can use the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :limit (Integer)

    Use this parameter to specify the maximum number of items to return. When this value is present, AWS KMS does not return more than the specified number of items, but it might return fewer.

    This value is optional. If you include a value, it must be between 1 and 50, inclusive. If you do not include a value, it defaults to 50.

  • :marker (String)

    Use this parameter in a subsequent request after you receive a response with truncated results. Set it to the value of NextMarker from the truncated response you just received.

    Do not attempt to construct this value. Use only the value of NextMarker from the truncated response you just received.

Returns:

See Also:

#list_retirable_grants(options = {}) ⇒ Types::ListGrantsResponse

Returns a list of all grants for which the grant's RetiringPrincipal matches the one specified.

A typical use is to list all grants that you are able to retire. To retire a grant, use RetireGrant.

Examples:

Example: To list grants that the specified principal can retire


# The following example lists the grants that the specified principal (identity) can retire.

resp = client.list_retirable_grants({
  retiring_principal: "arn:aws:iam::111122223333:role/ExampleRole", # The retiring principal whose grants you want to list. Use the Amazon Resource Name (ARN) of an AWS principal such as an AWS account (root), IAM user, federated user, or assumed role user.
})

# resp.to_h outputs the following:
{
  grants: [
    {
      creation_date: Time.parse("2016-12-07T11:09:35-08:00"), 
      grant_id: "0c237476b39f8bc44e45212e08498fbe3151305030726c0590dd8d3e9f3d6a60", 
      grantee_principal: "arn:aws:iam::111122223333:role/ExampleRole", 
      issuing_account: "arn:aws:iam::444455556666:root", 
      key_id: "arn:aws:kms:us-east-2:444455556666:key/1234abcd-12ab-34cd-56ef-1234567890ab", 
      operations: [
        "Decrypt", 
        "Encrypt", 
      ], 
      retiring_principal: "arn:aws:iam::111122223333:role/ExampleRole", 
    }, 
  ], # A list of grants that the specified principal can retire.
  truncated: false, # A boolean that indicates whether there are more items in the list. Returns true when there are more items, or false when there are not.
}

Request syntax with placeholder values


resp = client.list_retirable_grants({
  limit: 1,
  marker: "MarkerType",
  retiring_principal: "PrincipalIdType", # required
})

Response structure


resp.grants #=> Array
resp.grants[0].key_id #=> String
resp.grants[0].grant_id #=> String
resp.grants[0].name #=> String
resp.grants[0].creation_date #=> Time
resp.grants[0].grantee_principal #=> String
resp.grants[0].retiring_principal #=> String
resp.grants[0]. #=> String
resp.grants[0].operations #=> Array
resp.grants[0].operations[0] #=> String, one of "Decrypt", "Encrypt", "GenerateDataKey", "GenerateDataKeyWithoutPlaintext", "ReEncryptFrom", "ReEncryptTo", "CreateGrant", "RetireGrant", "DescribeKey"
resp.grants[0].constraints.encryption_context_subset #=> Hash
resp.grants[0].constraints.encryption_context_subset["EncryptionContextKey"] #=> String
resp.grants[0].constraints.encryption_context_equals #=> Hash
resp.grants[0].constraints.encryption_context_equals["EncryptionContextKey"] #=> String
resp.next_marker #=> String
resp.truncated #=> true/false

Options Hash (options):

  • :limit (Integer)

    Use this parameter to specify the maximum number of items to return. When this value is present, AWS KMS does not return more than the specified number of items, but it might return fewer.

    This value is optional. If you include a value, it must be between 1 and 100, inclusive. If you do not include a value, it defaults to 50.

  • :marker (String)

    Use this parameter in a subsequent request after you receive a response with truncated results. Set it to the value of NextMarker from the truncated response you just received.

  • :retiring_principal (required, String)

    The retiring principal for which to list grants.

    To specify the retiring principal, use the Amazon Resource Name (ARN) of an AWS principal. Valid AWS principals include AWS accounts (root), IAM users, federated users, and assumed role users. For examples of the ARN syntax for specifying a principal, see AWS Identity and Access Management (IAM) in the Example ARNs section of the Amazon Web Services General Reference.

Returns:

See Also:

#put_key_policy(options = {}) ⇒ Struct

Attaches a key policy to the specified customer master key (CMK).

For more information about key policies, see Key Policies in the AWS Key Management Service Developer Guide.

Examples:

Example: To attach a key policy to a customer master key (CMK)


# The following example attaches a key policy to the specified CMK.

resp = client.put_key_policy({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to attach the key policy to. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
  policy: "{\n    \"Version\": \"2012-10-17\",\n    \"Id\": \"custom-policy-2016-12-07\",\n    \"Statement\": [\n        {\n            \"Sid\": \"Enable IAM User Permissions\",\n            \"Effect\": \"Allow\",\n            \"Principal\": {\n                \"AWS\": \"arn:aws:iam::111122223333:root\"\n            },\n            \"Action\": \"kms:*\",\n            \"Resource\": \"*\"\n        },\n        {\n            \"Sid\": \"Allow access for Key Administrators\",\n            \"Effect\": \"Allow\",\n            \"Principal\": {\n                \"AWS\": [\n                    \"arn:aws:iam::111122223333:user/ExampleAdminUser\",\n                    \"arn:aws:iam::111122223333:role/ExampleAdminRole\"\n                ]\n            },\n            \"Action\": [\n                \"kms:Create*\",\n                \"kms:Describe*\",\n                \"kms:Enable*\",\n                \"kms:List*\",\n                \"kms:Put*\",\n                \"kms:Update*\",\n                \"kms:Revoke*\",\n                \"kms:Disable*\",\n                \"kms:Get*\",\n                \"kms:Delete*\",\n                \"kms:ScheduleKeyDeletion\",\n                \"kms:CancelKeyDeletion\"\n            ],\n            \"Resource\": \"*\"\n        },\n        {\n            \"Sid\": \"Allow use of the key\",\n            \"Effect\": \"Allow\",\n            \"Principal\": {\n                \"AWS\": \"arn:aws:iam::111122223333:role/ExamplePowerUserRole\"\n            },\n            \"Action\": [\n                \"kms:Encrypt\",\n                \"kms:Decrypt\",\n                \"kms:ReEncrypt*\",\n                \"kms:GenerateDataKey*\",\n                \"kms:DescribeKey\"\n            ],\n            \"Resource\": \"*\"\n        },\n        {\n            \"Sid\": \"Allow attachment of persistent resources\",\n            \"Effect\": \"Allow\",\n            \"Principal\": {\n                \"AWS\": \"arn:aws:iam::111122223333:role/ExamplePowerUserRole\"\n            },\n            \"Action\": [\n                \"kms:CreateGrant\",\n                \"kms:ListGrants\",\n                \"kms:RevokeGrant\"\n            ],\n            \"Resource\": \"*\",\n            \"Condition\": {\n                \"Bool\": {\n                    \"kms:GrantIsForAWSResource\": \"true\"\n                }\n            }\n        }\n    ]\n}\n", # The key policy document.
  policy_name: "default", # The name of the key policy.
})

Request syntax with placeholder values


resp = client.put_key_policy({
  key_id: "KeyIdType", # required
  policy_name: "PolicyNameType", # required
  policy: "PolicyType", # required
  bypass_policy_lockout_safety_check: false,
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the CMK.

    Use the CMK\'s unique identifier or its Amazon Resource Name (ARN). For example:

    • Unique ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :policy_name (required, String)

    The name of the key policy.

    This value must be default.

  • :policy (required, String)

    The key policy to attach to the CMK.

    If you do not set BypassPolicyLockoutSafetyCheck to true, the policy must meet the following criteria:

    • It must allow the principal that is making the PutKeyPolicy request to make a subsequent PutKeyPolicy request on the CMK. This reduces the likelihood that the CMK becomes unmanageable. For more information, refer to the scenario in the Default Key Policy section in the AWS Key Management Service Developer Guide.

    • The principals that are specified in the key policy must exist and be visible to AWS KMS. When you create a new AWS principal (for example, an IAM user or role), you might need to enforce a delay before specifying the new principal in a key policy because the new principal might not immediately be visible to AWS KMS. For more information, see Changes that I make are not always immediately visible in the IAM User Guide.

    The policy size limit is 32 KiB (32768 bytes).

  • :bypass_policy_lockout_safety_check (Boolean)

    A flag to indicate whether to bypass the key policy lockout safety check.

    Setting this value to true increases the likelihood that the CMK becomes unmanageable. Do not set this value to true indiscriminately.

    For more information, refer to the scenario in the Default Key Policy section in the AWS Key Management Service Developer Guide.

    Use this parameter only when you intend to prevent the principal that is making the request from making a subsequent PutKeyPolicy request on the CMK.

    The default value is false.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#re_encrypt(options = {}) ⇒ Types::ReEncryptResponse

Encrypts data on the server side with a new customer master key (CMK) without exposing the plaintext of the data on the client side. The data is first decrypted and then reencrypted. You can also use this operation to change the encryption context of a ciphertext.

Unlike other operations, ReEncrypt is authorized twice, once as ReEncryptFrom on the source CMK and once as ReEncryptTo on the destination CMK. We recommend that you include the "kms:ReEncrypt*" permission in your key policies to permit reencryption from or to the CMK. This permission is automatically included in the key policy when you create a CMK through the console, but you must include it manually when you create a CMK programmatically or when you set a key policy with the PutKeyPolicy operation.

Examples:

Example: To reencrypt data


# The following example reencrypts data with the specified CMK.

resp = client.re_encrypt({
  ciphertext_blob: "<binary data>", # The data to reencrypt.
  destination_key_id: "0987dcba-09fe-87dc-65ba-ab0987654321", # The identifier of the CMK to use to reencrypt the data. You can use the key ID or Amazon Resource Name (ARN) of the CMK, or the name or ARN of an alias that refers to the CMK.
})

# resp.to_h outputs the following:
{
  ciphertext_blob: "<binary data>", # The reencrypted data.
  key_id: "arn:aws:kms:us-east-2:111122223333:key/0987dcba-09fe-87dc-65ba-ab0987654321", # The ARN of the CMK that was used to reencrypt the data.
  source_key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK that was used to originally encrypt the data.
}

Request syntax with placeholder values


resp = client.re_encrypt({
  ciphertext_blob: "data", # required
  source_encryption_context: {
    "EncryptionContextKey" => "EncryptionContextValue",
  },
  destination_key_id: "KeyIdType", # required
  destination_encryption_context: {
    "EncryptionContextKey" => "EncryptionContextValue",
  },
  grant_tokens: ["GrantTokenType"],
})

Response structure


resp.ciphertext_blob #=> IO
resp.source_key_id #=> String
resp.key_id #=> String

Options Hash (options):

  • :ciphertext_blob (required, IO, String)

    Ciphertext of the data to reencrypt.

  • :source_encryption_context (Hash<String,String>)

    Encryption context used to encrypt and decrypt the data specified in the CiphertextBlob parameter.

  • :destination_key_id (required, String)

    A unique identifier for the CMK to use to reencrypt the data. This value can be a globally unique identifier, a fully specified ARN to either an alias or a key, or an alias name prefixed by \"alias/\".

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Alias ARN Example - arn:aws:kms:us-east-1:123456789012:alias/MyAliasName

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

    • Alias Name Example - alias/MyAliasName

  • :destination_encryption_context (Hash<String,String>)

    Encryption context to use when the data is reencrypted.

  • :grant_tokens (Array<String>)

    A list of grant tokens.

    For more information, see Grant Tokens in the AWS Key Management Service Developer Guide.

Returns:

See Also:

#retire_grant(options = {}) ⇒ Struct

Retires a grant. To clean up, you can retire a grant when you're done using it. You should revoke a grant when you intend to actively deny operations that depend on it. The following are permitted to call this API:

  • The AWS account (root user) under which the grant was created

  • The RetiringPrincipal, if present in the grant

  • The GranteePrincipal, if RetireGrant is an operation specified in the grant

You must identify the grant to retire by its grant token or by a combination of the grant ID and the Amazon Resource Name (ARN) of the customer master key (CMK). A grant token is a unique variable-length base64-encoded string. A grant ID is a 64 character unique identifier of a grant. The CreateGrant operation returns both.

Examples:

Example: To retire a grant


# The following example retires a grant.

resp = client.retire_grant({
  grant_id: "0c237476b39f8bc44e45212e08498fbe3151305030726c0590dd8d3e9f3d6a60", # The identifier of the grant to retire.
  key_id: "arn:aws:kms:us-east-2:444455556666:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The Amazon Resource Name (ARN) of the customer master key (CMK) associated with the grant.
})

Request syntax with placeholder values


resp = client.retire_grant({
  grant_token: "GrantTokenType",
  key_id: "KeyIdType",
  grant_id: "GrantIdType",
})

Options Hash (options):

  • :grant_token (String)

    Token that identifies the grant to be retired.

  • :key_id (String)

    The Amazon Resource Name of the CMK associated with the grant. Example:

    • arn:aws:kms:us-east-2:444455556666:key/1234abcd-12ab-34cd-56ef-1234567890ab

    ^

  • :grant_id (String)

    Unique identifier of the grant to retire. The grant ID is returned in the response to a CreateGrant operation.

    • Grant ID Example - 0123456789012345678901234567890123456789012345678901234567890123

    ^

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#revoke_grant(options = {}) ⇒ Struct

Revokes a grant. You can revoke a grant to actively deny operations that depend on it.

Examples:

Example: To revoke a grant


# The following example revokes a grant.

resp = client.revoke_grant({
  grant_id: "0c237476b39f8bc44e45212e08498fbe3151305030726c0590dd8d3e9f3d6a60", # The identifier of the grant to revoke.
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the customer master key (CMK) associated with the grant. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.revoke_grant({
  key_id: "KeyIdType", # required
  grant_id: "GrantIdType", # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the customer master key associated with the grant. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

  • :grant_id (required, String)

    Identifier of the grant to be revoked.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#schedule_key_deletion(options = {}) ⇒ Types::ScheduleKeyDeletionResponse

Schedules the deletion of a customer master key (CMK). You may provide a waiting period, specified in days, before deletion occurs. If you do not provide a waiting period, the default period of 30 days is used. When this operation is successful, the state of the CMK changes to PendingDeletion. Before the waiting period ends, you can use CancelKeyDeletion to cancel the deletion of the CMK. After the waiting period ends, AWS KMS deletes the CMK and all AWS KMS data associated with it, including all aliases that refer to it.

Deleting a CMK is a destructive and potentially dangerous operation. When a CMK is deleted, all data that was encrypted under the CMK is rendered unrecoverable. To restrict the use of a CMK without deleting it, use DisableKey.

For more information about scheduling a CMK for deletion, see Deleting Customer Master Keys in the AWS Key Management Service Developer Guide.

Examples:

Example: To schedule a customer master key (CMK) for deletion


# The following example schedules the specified CMK for deletion.

resp = client.schedule_key_deletion({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK to schedule for deletion. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
  pending_window_in_days: 7, # The waiting period, specified in number of days. After the waiting period ends, AWS KMS deletes the CMK.
})

# resp.to_h outputs the following:
{
  deletion_date: Time.parse("2016-12-17T16:00:00-08:00"), # The date and time after which AWS KMS deletes the CMK.
  key_id: "arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab", # The ARN of the CMK that is scheduled for deletion.
}

Request syntax with placeholder values


resp = client.schedule_key_deletion({
  key_id: "KeyIdType", # required
  pending_window_in_days: 1,
})

Response structure


resp.key_id #=> String
resp.deletion_date #=> Time

Options Hash (options):

  • :key_id (required, String)

    The unique identifier for the customer master key (CMK) to delete.

    To specify this value, use the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

    To obtain the unique key ID and key ARN for a given CMK, use ListKeys or DescribeKey.

  • :pending_window_in_days (Integer)

    The waiting period, specified in number of days. After the waiting period ends, AWS KMS deletes the customer master key (CMK).

    This value is optional. If you include a value, it must be between 7 and 30, inclusive. If you do not include a value, it defaults to 30.

Returns:

See Also:

#tag_resource(options = {}) ⇒ Struct

Adds or overwrites one or more tags for the specified customer master key (CMK).

Each tag consists of a tag key and a tag value. Tag keys and tag values are both required, but tag values can be empty (null) strings.

You cannot use the same tag key more than once per CMK. For example, consider a CMK with one tag whose tag key is Purpose and tag value is Test. If you send a TagResource request for this CMK with a tag key of Purpose and a tag value of Prod, it does not create a second tag. Instead, the original tag is overwritten with the new tag value.

Examples:

Example: To tag a customer master key (CMK)


# The following example tags a CMK.

resp = client.tag_resource({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK you are tagging. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
  tags: [
    {
      tag_key: "Purpose", 
      tag_value: "Test", 
    }, 
  ], # A list of tags.
})

Request syntax with placeholder values


resp = client.tag_resource({
  key_id: "KeyIdType", # required
  tags: [ # required
    {
      tag_key: "TagKeyType", # required
      tag_value: "TagValueType", # required
    },
  ],
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the CMK you are tagging. You can use the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :tags (required, Array<Types::Tag>)

    One or more tags. Each tag consists of a tag key and a tag value.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#untag_resource(options = {}) ⇒ Struct

Removes the specified tag or tags from the specified customer master key (CMK).

To remove a tag, you specify the tag key for each tag to remove. You do not specify the tag value. To overwrite the tag value for an existing tag, use TagResource.

Examples:

Example: To remove tags from a customer master key (CMK)


# The following example removes tags from a CMK.

resp = client.untag_resource({
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose tags you are removing.
  tag_keys: [
    "Purpose", 
    "CostCenter", 
  ], # A list of tag keys. Provide only the tag keys, not the tag values.
})

Request syntax with placeholder values


resp = client.untag_resource({
  key_id: "KeyIdType", # required
  tag_keys: ["TagKeyType"], # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the CMK from which you are removing tags. You can use the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:

    • Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • :tag_keys (required, Array<String>)

    One or more tag keys. Specify only the tag keys, not the tag values.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#update_alias(options = {}) ⇒ Struct

Updates an alias to map it to a different key.

An alias is not a property of a key. Therefore, an alias can be mapped to and unmapped from an existing key without changing the properties of the key.

An alias name can contain only alphanumeric characters, forward slashes (/), underscores (_), and dashes (-). An alias must start with the word "alias" followed by a forward slash (alias/). An alias that begins with "aws" after the forward slash (alias/aws...) is reserved by Amazon Web Services (AWS).

The alias and the key it is mapped to must be in the same AWS account and the same region.

Examples:

Example: To update an alias


# The following example updates the specified alias to refer to the specified customer master key (CMK).

resp = client.update_alias({
  alias_name: "alias/ExampleAlias", # The alias to update.
  target_key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK that the alias will refer to after this operation succeeds. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.update_alias({
  alias_name: "AliasNameType", # required
  target_key_id: "KeyIdType", # required
})

Options Hash (options):

  • :alias_name (required, String)

    String that contains the name of the alias to be modified. The name must start with the word \"alias\" followed by a forward slash (alias/). Aliases that begin with \"alias/aws\" are reserved.

  • :target_key_id (required, String)

    Unique identifier of the customer master key to be mapped to the alias. This value can be a globally unique identifier or the fully specified ARN of a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

    You can call ListAliases to verify that the alias is mapped to the correct TargetKeyId.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#update_key_description(options = {}) ⇒ Struct

Updates the description of a customer master key (CMK).

Examples:

Example: To update the description of a customer master key (CMK)


# The following example updates the description of the specified CMK.

resp = client.update_key_description({
  description: "Example description that indicates the intended use of this CMK.", # The updated description.
  key_id: "1234abcd-12ab-34cd-56ef-1234567890ab", # The identifier of the CMK whose description you are updating. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
})

Request syntax with placeholder values


resp = client.update_key_description({
  key_id: "KeyIdType", # required
  description: "DescriptionType", # required
})

Options Hash (options):

  • :key_id (required, String)

    A unique identifier for the CMK. This value can be a globally unique identifier or the fully specified ARN to a key.

    • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

    • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

  • :description (required, String)

    New description for the CMK.

Returns:

  • (Struct)

    Returns an empty response.

See Also:

#wait_until(waiter_name, params = {}) {|waiter| ... } ⇒ Boolean

Waiters polls an API operation until a resource enters a desired state.

Basic Usage

Waiters will poll until they are succesful, they fail by entering a terminal state, or until a maximum number of attempts are made.

# polls in a loop, sleeping between attempts client.waiter_until(waiter_name, params)

Configuration

You can configure the maximum number of polling attempts, and the delay (in seconds) between each polling attempt. You configure waiters by passing a block to #wait_until:

# poll for ~25 seconds
client.wait_until(...) do |w|
  w.max_attempts = 5
  w.delay = 5
end

Callbacks

You can be notified before each polling attempt and before each delay. If you throw :success or :failure from these callbacks, it will terminate the waiter.

started_at = Time.now
client.wait_until(...) do |w|

  # disable max attempts
  w.max_attempts = nil

  # poll for 1 hour, instead of a number of attempts
  w.before_wait do |attempts, response|
    throw :failure if Time.now - started_at > 3600
  end

end

Handling Errors

When a waiter is successful, it returns true. When a waiter fails, it raises an error. All errors raised extend from Waiters::Errors::WaiterFailed.

begin
  client.wait_until(...)
rescue Aws::Waiters::Errors::WaiterFailed
  # resource did not enter the desired state in time
end

Parameters:

  • waiter_name (Symbol)

    The name of the waiter. See #waiter_names for a full list of supported waiters.

  • params (Hash) (defaults to: {})

    Additional request parameters. See the #waiter_names for a list of supported waiters and what request they call. The called request determines the list of accepted parameters.

Yield Parameters:

Returns:

  • (Boolean)

    Returns true if the waiter was successful.

Raises:

  • (Errors::FailureStateError)

    Raised when the waiter terminates because the waiter has entered a state that it will not transition out of, preventing success.

  • (Errors::TooManyAttemptsError)

    Raised when the configured maximum number of attempts have been made, and the waiter is not yet successful.

  • (Errors::UnexpectedError)

    Raised when an error is encounted while polling for a resource that is not expected.

  • (Errors::NoSuchWaiterError)

    Raised when you request to wait for an unknown state.

#waiter_namesArray<Symbol>

Returns the list of supported waiters. The following table lists the supported waiters and the client method they call:

Waiter NameClient MethodDefault Delay:Default Max Attempts:

Returns:

  • (Array<Symbol>)

    the list of supported waiters.