AWSKMSEncryptRequest

Objective-C

@interface AWSKMSEncryptRequest

Swift

class AWSKMSEncryptRequest
  • Specifies the encryption algorithm that AWS KMS will use to encrypt the plaintext message. The algorithm must be compatible with the CMK that you specify.

    This parameter is required only for asymmetric CMKs. The default value, SYMMETRIC_DEFAULT, is the algorithm used for symmetric CMKs. If you are using an asymmetric CMK, we recommend RSAES_OAEP_SHA_256.

    Declaration

    Objective-C

    @property (nonatomic) AWSKMSEncryptionAlgorithmSpec encryptionAlgorithm;

    Swift

    var encryptionAlgorithm: AWSKMSEncryptionAlgorithmSpec { get set }
  • Specifies the encryption context that will be used to encrypt the data. An encryption context is valid only for cryptographic operations with a symmetric CMK. The standard asymmetric encryption algorithms that AWS KMS uses do not support an encryption context.

    An encryption context is a collection of non-secret key-value pairs that represents additional authenticated data. When you use an encryption context to encrypt data, you must specify the same (an exact case-sensitive match) encryption context to decrypt the data. An encryption context is optional when encrypting with a symmetric CMK, but it is highly recommended.

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

    Declaration

    Objective-C

    @property (nonatomic, strong) NSDictionary<NSString *, NSString *> *_Nullable encryptionContext;

    Swift

    var encryptionContext: [String : String]? { get set }
  • A list of grant tokens.

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

    Declaration

    Objective-C

    @property (nonatomic, strong) NSArray<NSString *> *_Nullable grantTokens;

    Swift

    var grantTokens: [String]? { get set }
  • A unique identifier for the customer master key (CMK).

    To specify a CMK, use its key ID, Amazon Resource Name (ARN), alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a CMK in a different AWS 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 CMK, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable keyId;

    Swift

    var keyId: String? { get set }
  • Data to be encrypted.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSData *_Nullable plaintext;

    Swift

    var plaintext: Data? { get set }