Class: Aws::KMS::Types::SignRequest

Inherits:

Struct

• Object
• Struct
• Aws::KMS::Types::SignRequest

Includes:

Structure

Defined in:

lib/aws-sdk-kms/types.rb

Overview

See Also:

• AWS API Documentation

Constant Summary

SENSITIVE =

[:message]

Instance Attribute Summary

• #dry_run ⇒ Boolean

  Checks if your request will succeed.

• #grant_tokens ⇒ Array<String>

  A list of grant tokens.

• #key_id ⇒ String

  Identifies an asymmetric KMS key.

• #message ⇒ String

  Specifies the message or message digest to sign.

• #message_type ⇒ String

  Tells KMS whether the value of the ‘Message` parameter should be hashed as part of the signing algorithm.

• #signing_algorithm ⇒ String

  Specifies the signing algorithm to use when signing the message.

Instance Attribute Details

#dry_run ⇒ Boolean

Checks if your request will succeed. ‘DryRun` is an optional parameter.

To learn more about how to use this parameter, see [Testing your KMS API calls] in the *Key Management Service Developer Guide*.

[1]: docs.aws.amazon.com/kms/latest/developerguide/programming-dryrun.html

Returns:

• (Boolean)

# File 'lib/aws-sdk-kms/types.rb', line 5967

class SignRequest < Struct.new(
  :key_id,
  :message,
  :message_type,
  :grant_tokens,
  :signing_algorithm,
  :dry_run)
  SENSITIVE = [:message]
  include Aws::Structure
end

#grant_tokens ⇒ Array<String>

A list of grant tokens.

Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved *eventual consistency*. For more information, see [Grant token] and [Using a grant token] in the *Key Management Service Developer Guide*.

[1]: docs.aws.amazon.com/kms/latest/developerguide/grants.html#grant_token [2]: docs.aws.amazon.com/kms/latest/developerguide/grant-manage.html#using-grant-token

Returns:

• (Array<String>)

# File 'lib/aws-sdk-kms/types.rb', line 5967

class SignRequest < Struct.new(
  :key_id,
  :message,
  :message_type,
  :grant_tokens,
  :signing_algorithm,
  :dry_run)
  SENSITIVE = [:message]
  include Aws::Structure
end

#key_id ⇒ String

Identifies an asymmetric KMS key. KMS uses the private key in the asymmetric KMS key to sign the message. The ‘KeyUsage` type of the KMS key must be `SIGN_VERIFY`. To find the `KeyUsage` of a KMS key, use the DescribeKey operation.

To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with ‘“alias/”`. To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

For example:

• Key ID: ‘1234abcd-12ab-34cd-56ef-1234567890ab`

• Key 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`

To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

Returns:

• (String)

# File 'lib/aws-sdk-kms/types.rb', line 5967

class SignRequest < Struct.new(
  :key_id,
  :message,
  :message_type,
  :grant_tokens,
  :signing_algorithm,
  :dry_run)
  SENSITIVE = [:message]
  include Aws::Structure
end

#message ⇒ String

Specifies the message or message digest to sign. Messages can be 0-4096 bytes. To sign a larger message, provide a message digest.

If you provide a message digest, use the ‘DIGEST` value of `MessageType` to prevent the digest from being hashed again while signing.

Returns:

• (String)

# File 'lib/aws-sdk-kms/types.rb', line 5967

class SignRequest < Struct.new(
  :key_id,
  :message,
  :message_type,
  :grant_tokens,
  :signing_algorithm,
  :dry_run)
  SENSITIVE = [:message]
  include Aws::Structure
end

#message_type ⇒ String

Tells KMS whether the value of the ‘Message` parameter should be hashed as part of the signing algorithm. Use `RAW` for unhashed messages; use `DIGEST` for message digests, which are already hashed.

When the value of ‘MessageType` is `RAW`, KMS uses the standard signing algorithm, which begins with a hash function. When the value is `DIGEST`, KMS skips the hashing step in the signing algorithm.

Use the ‘DIGEST` value only when the value of the `Message` parameter is a message digest. If you use the `DIGEST` value with an unhashed message, the security of the signing operation can be compromised.

When the value of ‘MessageType`is `DIGEST`, the length of the `Message` value must match the length of hashed messages for the specified signing algorithm.

You can submit a message digest and omit the ‘MessageType` or specify `RAW` so the digest is hashed again while signing. However, this can cause verification failures when verifying with a system that assumes a single hash.

The hashing algorithm in that ‘Sign` uses is based on the `SigningAlgorithm` value.

• Signing algorithms that end in SHA_256 use the SHA_256 hashing algorithm.

• Signing algorithms that end in SHA_384 use the SHA_384 hashing algorithm.

• Signing algorithms that end in SHA_512 use the SHA_512 hashing algorithm.

• SM2DSA uses the SM3 hashing algorithm. For details, see [Offline verification with SM2 key pairs].

[1]: docs.aws.amazon.com/kms/latest/developerguide/asymmetric-key-specs.html#key-spec-sm-offline-verification

Returns:

• (String)

# File 'lib/aws-sdk-kms/types.rb', line 5967

class SignRequest < Struct.new(
  :key_id,
  :message,
  :message_type,
  :grant_tokens,
  :signing_algorithm,
  :dry_run)
  SENSITIVE = [:message]
  include Aws::Structure
end

#signing_algorithm ⇒ String

Specifies the signing algorithm to use when signing the message.

Choose an algorithm that is compatible with the type and size of the specified asymmetric KMS key. When signing with RSA key pairs, RSASSA-PSS algorithms are preferred. We include RSASSA-PKCS1-v1_5 algorithms for compatibility with existing applications.

Returns:

• (String)

# File 'lib/aws-sdk-kms/types.rb', line 5967

class SignRequest < Struct.new(
  :key_id,
  :message,
  :message_type,
  :grant_tokens,
  :signing_algorithm,
  :dry_run)
  SENSITIVE = [:message]
  include Aws::Structure
end