// Code generated by smithy-go-codegen DO NOT EDIT.

package kms

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"github.com/aws/aws-sdk-go-v2/service/kms/types"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

// Decrypts ciphertext and then reencrypts it entirely within KMS. You can use
// this operation to change the KMS key under which data is encrypted, such as when
// you [manually rotate]a KMS key or change the KMS key that protects a ciphertext. You can also
// use it to reencrypt ciphertext under the same KMS key, such as to change the [encryption context]of
// a ciphertext.
//
// The ReEncrypt operation can decrypt ciphertext that was encrypted by using a
// KMS key in an KMS operation, such as Encryptor GenerateDataKey. It can also decrypt ciphertext that
// was encrypted by using the public key of an [asymmetric KMS key]outside of KMS. However, it cannot
// decrypt ciphertext produced by other libraries, such as the [Amazon Web Services Encryption SDK]or [Amazon S3 client-side encryption]. These
// libraries return a ciphertext format that is incompatible with KMS.
//
// When you use the ReEncrypt operation, you need to provide information for the
// decrypt operation and the subsequent encrypt operation.
//
//   - If your ciphertext was encrypted under an asymmetric KMS key, you must use
//     the SourceKeyId parameter to identify the KMS key that encrypted the
//     ciphertext. You must also supply the encryption algorithm that was used. This
//     information is required to decrypt the data.
//
//   - If your ciphertext was encrypted under a symmetric encryption KMS key, the
//     SourceKeyId parameter is optional. KMS can get this information from metadata
//     that it adds to the symmetric ciphertext blob. This feature adds durability to
//     your implementation by ensuring that authorized users can decrypt ciphertext
//     decades after it was encrypted, even if they've lost track of the key ID.
//     However, specifying the source KMS key is always recommended as a best practice.
//     When you use the SourceKeyId parameter to specify a KMS key, KMS uses only the
//     KMS key you specify. If the ciphertext was encrypted under a different KMS key,
//     the ReEncrypt operation fails. This practice ensures that you use the KMS key
//     that you intend.
//
//   - To reencrypt the data, you must use the DestinationKeyId parameter to
//     specify the KMS key that re-encrypts the data after it is decrypted. If the
//     destination KMS key is an asymmetric KMS key, you must also provide the
//     encryption algorithm. The algorithm that you choose must be compatible with the
//     KMS key.
//
// When you use an asymmetric KMS key to encrypt or reencrypt data, be sure to
//
//	record the KMS key and encryption algorithm that you choose. You will be
//	required to provide the same KMS key and encryption algorithm when you decrypt
//	the data. If the KMS key and algorithm do not match the values used to encrypt
//	the data, the decrypt operation fails.
//
// You are not required to supply the key ID and encryption algorithm when you
//
//	decrypt with symmetric encryption KMS keys because KMS stores this information
//	in the ciphertext blob. KMS cannot store metadata in ciphertext generated with
//	asymmetric keys. The standard format for asymmetric key ciphertext does not
//	include configurable fields.
//
// The KMS key that you use for this operation must be in a compatible key state.
// For details, see [Key states of KMS keys]in the Key Management Service Developer Guide.
//
// Cross-account use: Yes. The source KMS key and destination KMS key can be in
// different Amazon Web Services accounts. Either or both KMS keys can be in a
// different account than the caller. To specify a KMS key in a different account,
// you must use its key ARN or alias ARN.
//
// Required permissions:
//
// [kms:ReEncryptFrom]
//   - permission on the source KMS key (key policy)
//
// [kms:ReEncryptTo]
//   - permission on the destination KMS key (key policy)
//
// To permit reencryption from or to a KMS key, include the "kms:ReEncrypt*"
// permission in your [key policy]. This permission is automatically included in the key
// policy when you use the console to create a KMS key. But you must include it
// manually when you create a KMS key programmatically or when you use the PutKeyPolicy
// operation to set a key policy.
//
// Related operations:
//
// # Decrypt
//
// # Encrypt
//
// # GenerateDataKey
//
// # GenerateDataKeyPair
//
// Eventual consistency: The KMS API follows an eventual consistency model. For
// more information, see [KMS eventual consistency].
//
// [Amazon Web Services Encryption SDK]: https://docs.aws.amazon.com/encryption-sdk/latest/developer-guide/
// [Key states of KMS keys]: https://docs.aws.amazon.com/kms/latest/developerguide/key-state.html
// [asymmetric KMS key]: https://docs.aws.amazon.com/kms/latest/developerguide/symmetric-asymmetric.html
// [key policy]: https://docs.aws.amazon.com/kms/latest/developerguide/key-policies.html
// [Amazon S3 client-side encryption]: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingClientSideEncryption.html
// [kms:ReEncryptTo]: https://docs.aws.amazon.com/kms/latest/developerguide/kms-api-permissions-reference.html
// [encryption context]: https://docs.aws.amazon.com/kms/latest/developerguide/encrypt_context.html
// [manually rotate]: https://docs.aws.amazon.com/kms/latest/developerguide/rotate-keys-manually.html
// [kms:ReEncryptFrom]: https://docs.aws.amazon.com/kms/latest/developerguide/kms-api-permissions-reference.html
// [KMS eventual consistency]: https://docs.aws.amazon.com/kms/latest/developerguide/accessing-kms.html#programming-eventual-consistency
func (c *Client) ReEncrypt(ctx context.Context, params *ReEncryptInput, optFns ...func(*Options)) (*ReEncryptOutput, error) {
	if params == nil {
		params = &ReEncryptInput{}
	}

	result, metadata, err := c.invokeOperation(ctx, "ReEncrypt", params, optFns, c.addOperationReEncryptMiddlewares)
	if err != nil {
		return nil, err
	}

	out := result.(*ReEncryptOutput)
	out.ResultMetadata = metadata
	return out, nil
}

type ReEncryptInput struct {

	// Ciphertext of the data to reencrypt.
	//
	// This member is required.
	CiphertextBlob []byte

	// A unique identifier for the KMS key that is used to reencrypt the data. Specify
	// a symmetric encryption KMS key or an asymmetric KMS key with a KeyUsage value
	// of ENCRYPT_DECRYPT . To find the KeyUsage value 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.
	//
	// This member is required.
	DestinationKeyId *string

	// Specifies the encryption algorithm that KMS will use to reecrypt the data after
	// it has decrypted it. The default value, SYMMETRIC_DEFAULT , represents the
	// encryption algorithm used for symmetric encryption KMS keys.
	//
	// This parameter is required only when the destination KMS key is an asymmetric
	// KMS key.
	DestinationEncryptionAlgorithm types.EncryptionAlgorithmSpec

	// Specifies that encryption context to use when the reencrypting the data.
	//
	// Do not include confidential or sensitive information in this field. This field
	// may be displayed in plaintext in CloudTrail logs and other output.
	//
	// A destination encryption context is valid only when the destination KMS key is
	// a symmetric encryption KMS key. The standard ciphertext format for asymmetric
	// KMS keys does not include fields for metadata.
	//
	// An encryption context is a collection of non-secret key-value pairs that
	// represent 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 supported only
	// on operations with symmetric encryption KMS keys. On operations with symmetric
	// encryption KMS keys, an encryption context is optional, but it is strongly
	// recommended.
	//
	// For more information, see [Encryption context] in the Key Management Service Developer Guide.
	//
	// [Encryption context]: https://docs.aws.amazon.com/kms/latest/developerguide/encrypt_context.html
	DestinationEncryptionContext map[string]string

	// Checks if your request will succeed. DryRun is an optional parameter.
	//
	// To learn more about how to use this parameter, see [Testing your permissions] in the Key Management
	// Service Developer Guide.
	//
	// [Testing your permissions]: https://docs.aws.amazon.com/kms/latest/developerguide/testing-permissions.html
	DryRun *bool

	// 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.
	//
	// [Grant token]: https://docs.aws.amazon.com/kms/latest/developerguide/grants.html#grant_token
	// [Using a grant token]: https://docs.aws.amazon.com/kms/latest/developerguide/using-grant-token.html
	GrantTokens []string

	// Specifies the encryption algorithm that KMS will use to decrypt the ciphertext
	// before it is reencrypted. The default value, SYMMETRIC_DEFAULT , represents the
	// algorithm used for symmetric encryption KMS keys.
	//
	// Specify the same algorithm that was used to encrypt the ciphertext. If you
	// specify a different algorithm, the decrypt attempt fails.
	//
	// This parameter is required only when the ciphertext was encrypted under an
	// asymmetric KMS key.
	SourceEncryptionAlgorithm types.EncryptionAlgorithmSpec

	// Specifies the encryption context to use to decrypt the ciphertext. Enter the
	// same encryption context that was used to encrypt the ciphertext.
	//
	// An encryption context is a collection of non-secret key-value pairs that
	// represent 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 supported only
	// on operations with symmetric encryption KMS keys. On operations with symmetric
	// encryption KMS keys, an encryption context is optional, but it is strongly
	// recommended.
	//
	// For more information, see [Encryption context] in the Key Management Service Developer Guide.
	//
	// [Encryption context]: https://docs.aws.amazon.com/kms/latest/developerguide/encrypt_context.html
	SourceEncryptionContext map[string]string

	// Specifies the KMS key that KMS will use to decrypt the ciphertext before it is
	// re-encrypted.
	//
	// Enter a key ID of the KMS key that was used to encrypt the ciphertext. If you
	// identify a different KMS key, the ReEncrypt operation throws an
	// IncorrectKeyException .
	//
	// This parameter is required only when the ciphertext was encrypted under an
	// asymmetric KMS key. If you used a symmetric encryption KMS key, KMS can get the
	// KMS key from metadata that it adds to the symmetric ciphertext blob. However, it
	// is always recommended as a best practice. This practice ensures that you use the
	// KMS key that you intend.
	//
	// 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.
	SourceKeyId *string

	noSmithyDocumentSerde
}

type ReEncryptOutput struct {

	// The reencrypted data. When you use the HTTP API or the Amazon Web Services CLI,
	// the value is Base64-encoded. Otherwise, it is not Base64-encoded.
	CiphertextBlob []byte

	// The encryption algorithm that was used to reencrypt the data.
	DestinationEncryptionAlgorithm types.EncryptionAlgorithmSpec

	// The identifier of the key material used to reencrypt the data. This field is
	// present only when data is reencrypted using a symmetric encryption KMS key.
	DestinationKeyMaterialId *string

	// The Amazon Resource Name ([key ARN] ) of the KMS key that was used to reencrypt the data.
	//
	// [key ARN]: https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#key-id-key-ARN
	KeyId *string

	// The encryption algorithm that was used to decrypt the ciphertext before it was
	// reencrypted.
	SourceEncryptionAlgorithm types.EncryptionAlgorithmSpec

	// Unique identifier of the KMS key used to originally encrypt the data.
	SourceKeyId *string

	// The identifier of the key material used to originally encrypt the data. This
	// field is present only when the original encryption used a symmetric encryption
	// KMS key.
	SourceKeyMaterialId *string

	// Metadata pertaining to the operation's result.
	ResultMetadata middleware.Metadata

	noSmithyDocumentSerde
}

func (c *Client) addOperationReEncryptMiddlewares(stack *middleware.Stack, options Options) (err error) {
	if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
		return err
	}
	err = stack.Serialize.Add(&awsAwsjson11_serializeOpReEncrypt{}, middleware.After)
	if err != nil {
		return err
	}
	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpReEncrypt{}, middleware.After)
	if err != nil {
		return err
	}
	if err := addProtocolFinalizerMiddlewares(stack, options, "ReEncrypt"); err != nil {
		return fmt.Errorf("add protocol finalizers: %v", err)
	}

	if err = addlegacyEndpointContextSetter(stack, options); err != nil {
		return err
	}
	if err = addSetLoggerMiddleware(stack, options); err != nil {
		return err
	}
	if err = addClientRequestID(stack); err != nil {
		return err
	}
	if err = addComputeContentLength(stack); err != nil {
		return err
	}
	if err = addResolveEndpointMiddleware(stack, options); err != nil {
		return err
	}
	if err = addComputePayloadSHA256(stack); err != nil {
		return err
	}
	if err = addRetry(stack, options); err != nil {
		return err
	}
	if err = addRawResponseToMetadata(stack); err != nil {
		return err
	}
	if err = addRecordResponseTiming(stack); err != nil {
		return err
	}
	if err = addSpanRetryLoop(stack, options); err != nil {
		return err
	}
	if err = addClientUserAgent(stack, options); err != nil {
		return err
	}
	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
		return err
	}
	if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
		return err
	}
	if err = addTimeOffsetBuild(stack, c); err != nil {
		return err
	}
	if err = addUserAgentRetryMode(stack, options); err != nil {
		return err
	}
	if err = addCredentialSource(stack, options); err != nil {
		return err
	}
	if err = addOpReEncryptValidationMiddleware(stack); err != nil {
		return err
	}
	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opReEncrypt(options.Region), middleware.Before); err != nil {
		return err
	}
	if err = addRecursionDetection(stack); err != nil {
		return err
	}
	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
		return err
	}
	if err = addResponseErrorMiddleware(stack); err != nil {
		return err
	}
	if err = addRequestResponseLogging(stack, options); err != nil {
		return err
	}
	if err = addDisableHTTPSMiddleware(stack, options); err != nil {
		return err
	}
	if err = addSpanInitializeStart(stack); err != nil {
		return err
	}
	if err = addSpanInitializeEnd(stack); err != nil {
		return err
	}
	if err = addSpanBuildRequestStart(stack); err != nil {
		return err
	}
	if err = addSpanBuildRequestEnd(stack); err != nil {
		return err
	}
	return nil
}

func newServiceMetadataMiddleware_opReEncrypt(region string) *awsmiddleware.RegisterServiceMetadata {
	return &awsmiddleware.RegisterServiceMetadata{
		Region:        region,
		ServiceID:     ServiceID,
		OperationName: "ReEncrypt",
	}
}
