Re-encryption
Function
This API is used to decrypt the ciphertext using the source key and then encrypt the ciphertext using the specified new key.
The DEK ciphertext encrypted by CreateDatakey, ** CreateDatakeyWithoutPlainText**, or EncryptDatakey can be re-encrypted into a new DEK ciphertext.
The ciphertext encrypted by EncryptData can be re-encrypted into a new ciphertext.
Note:
A DEK can only be re-encrypted into a DEK.
Calling Method
For details, see Calling APIs.
Authorization Information
Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.
- If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
- If you are using identity policy-based authorization, no identity policy-based permission required for calling this API.
URI
POST /v1.0/{project_id}/kms/re-encrypt
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| project_id | Yes | String | Definition Project ID. For details, see Obtaining a Project ID. Constraints N/A Range The value returned by the IAM API is used, which contains 32 characters. Default Value N/A |
Request Parameters
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| X-Auth-Token | Yes | String | Definition User token. It can be obtained by calling the IAM API. The value of X-Subject-Token in the response header is the user token. Constraints N/A Range Obtain the value by calling the IAM API for obtaining the user token. Default Value N/A |
Response Parameters
Status code: 200
| Parameter | Type | Description |
|---|---|---|
| key_id | String | Definition Key ID used during the re-encryption Range N/A |
| source_key_id | String | Definition Key ID used during the encryption of the original ciphertext Range N/A |
| source_encryption_algorithm | String | Definition Encryption algorithm used during the encryption of the original ciphertext Range N/A |
| destination_encryption_algorithm | String | Definition Encryption algorithm used during the re-encryption Range N/A |
| cipher_text | String | Definition Ciphertext after re-encryption Range N/A |
Example Requests
https://kms.cn-north-4.myhuaweicloud.com/v1.0/d4e559b49b3b403da5279723299ed4a6/kms/re-encrypt
{
"source_key_id" : "054faae3-ffc2-4b23-8d94-c05bfc8f596a",
"source_additional_authenticated_data" : "",
"source_encryption_algorithm" : "SYMMETRIC_DEFAULT",
"destination_key_id" : "8ad47b5b-037e-4ff9-bf04-6900e3213c17",
"destination_additional_authenticated_data" : "123",
"destination_encryption_algorithm" : "SYMMETRIC_DEFAULT",
"datakey_cipher_length" : "32",
"cipher_text" : "020078000871efb21bfdc0712becf0dabfcc115a25eae06efb652aa9afa9689a4c4ec46b4bbeb3a902369b1a53eab67e9b8e730ced3879d1fb62c27cc314f2a44943687741a5d250403c861e4410936d422ef2d330353466616165332d666663322d346232332d386439342d63303562666338663539366100000000ed7fb70234ac273dedc19752900c6f7e4577fc2c1f1482539d0142ab0ff9fdda"
} Example Responses
None
SDK Sample Code
The SDK sample code is as follows.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | package com.huaweicloud.sdk.test; import com.huaweicloud.sdk.core.auth.ICredential; import com.huaweicloud.sdk.core.auth.BasicCredentials; import com.huaweicloud.sdk.core.exception.ConnectionException; import com.huaweicloud.sdk.core.exception.RequestTimeoutException; import com.huaweicloud.sdk.core.exception.ServiceResponseException; import com.huaweicloud.sdk.kms.v2.region.KmsRegion; import com.huaweicloud.sdk.kms.v2.*; import com.huaweicloud.sdk.kms.v2.model.*; public class ReEncryptSolution { public static void main(String[] args) { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK"); String projectId = "{project_id}"; ICredential auth = new BasicCredentials() .withProjectId(projectId) .withAk(ak) .withSk(sk); KmsClient client = KmsClient.newBuilder() .withCredential(auth) .withRegion(KmsRegion.valueOf("<YOUR REGION>")) .build(); ReEncryptRequest request = new ReEncryptRequest(); ReEncryptRequestBody body = new ReEncryptRequestBody(); body.withCipherText("020078000871efb21bfdc0712becf0dabfcc115a25eae06efb652aa9afa9689a4c4ec46b4bbeb3a902369b1a53eab67e9b8e730ced3879d1fb62c27cc314f2a44943687741a5d250403c861e4410936d422ef2d330353466616165332d666663322d346232332d386439342d63303562666338663539366100000000ed7fb70234ac273dedc19752900c6f7e4577fc2c1f1482539d0142ab0ff9fdda"); body.withDatakeyCipherLength("32"); body.withDestinationEncryptionAlgorithm("SYMMETRIC_DEFAULT"); body.withDestinationAdditionalAuthenticatedData("123"); body.withDestinationKeyId("8ad47b5b-037e-4ff9-bf04-6900e3213c17"); body.withSourceEncryptionAlgorithm("SYMMETRIC_DEFAULT"); body.withSourceAdditionalAuthenticatedData(""); body.withSourceKeyId("054faae3-ffc2-4b23-8d94-c05bfc8f596a"); request.withBody(body); try { ReEncryptResponse response = client.reEncrypt(request); System.out.println(response.toString()); } catch (ConnectionException e) { e.printStackTrace(); } catch (RequestTimeoutException e) { e.printStackTrace(); } catch (ServiceResponseException e) { e.printStackTrace(); System.out.println(e.getHttpStatusCode()); System.out.println(e.getRequestId()); System.out.println(e.getErrorCode()); System.out.println(e.getErrorMsg()); } } } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | # coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkkms.v2.region.kms_region import KmsRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkkms.v2 import * if __name__ == "__main__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}" credentials = BasicCredentials(ak, sk, projectId) client = KmsClient.new_builder() \ .with_credentials(credentials) \ .with_region(KmsRegion.value_of("<YOUR REGION>")) \ .build() try: request = ReEncryptRequest() request.body = ReEncryptRequestBody( cipher_text="020078000871efb21bfdc0712becf0dabfcc115a25eae06efb652aa9afa9689a4c4ec46b4bbeb3a902369b1a53eab67e9b8e730ced3879d1fb62c27cc314f2a44943687741a5d250403c861e4410936d422ef2d330353466616165332d666663322d346232332d386439342d63303562666338663539366100000000ed7fb70234ac273dedc19752900c6f7e4577fc2c1f1482539d0142ab0ff9fdda", datakey_cipher_length="32", destination_encryption_algorithm="SYMMETRIC_DEFAULT", destination_additional_authenticated_data="123", destination_key_id="8ad47b5b-037e-4ff9-bf04-6900e3213c17", source_encryption_algorithm="SYMMETRIC_DEFAULT", source_additional_authenticated_data="", source_key_id="054faae3-ffc2-4b23-8d94-c05bfc8f596a" ) response = client.re_encrypt(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" kms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kms/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kms/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kms/v2/region" ) func main() { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak := os.Getenv("CLOUD_SDK_AK") sk := os.Getenv("CLOUD_SDK_SK") projectId := "{project_id}" auth, err := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). SafeBuild() if err != nil { fmt.Println(err) return } hcClient, err := kms.KmsClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). SafeBuild() if err != nil { fmt.Println(err) return } client := kms.NewKmsClient(hcClient) request := &model.ReEncryptRequest{} datakeyCipherLengthReEncryptRequestBody:= "32" destinationEncryptionAlgorithmReEncryptRequestBody:= "SYMMETRIC_DEFAULT" destinationAdditionalAuthenticatedDataReEncryptRequestBody:= "123" sourceEncryptionAlgorithmReEncryptRequestBody:= "SYMMETRIC_DEFAULT" sourceAdditionalAuthenticatedDataReEncryptRequestBody:= "" sourceKeyIdReEncryptRequestBody:= "054faae3-ffc2-4b23-8d94-c05bfc8f596a" request.Body = &model.ReEncryptRequestBody{ CipherText: "020078000871efb21bfdc0712becf0dabfcc115a25eae06efb652aa9afa9689a4c4ec46b4bbeb3a902369b1a53eab67e9b8e730ced3879d1fb62c27cc314f2a44943687741a5d250403c861e4410936d422ef2d330353466616165332d666663322d346232332d386439342d63303562666338663539366100000000ed7fb70234ac273dedc19752900c6f7e4577fc2c1f1482539d0142ab0ff9fdda", DatakeyCipherLength: &datakeyCipherLengthReEncryptRequestBody, DestinationEncryptionAlgorithm: &destinationEncryptionAlgorithmReEncryptRequestBody, DestinationAdditionalAuthenticatedData: &destinationAdditionalAuthenticatedDataReEncryptRequestBody, DestinationKeyId: "8ad47b5b-037e-4ff9-bf04-6900e3213c17", SourceEncryptionAlgorithm: &sourceEncryptionAlgorithmReEncryptRequestBody, SourceAdditionalAuthenticatedData: &sourceAdditionalAuthenticatedDataReEncryptRequestBody, SourceKeyId: &sourceKeyIdReEncryptRequestBody, } response, err := client.ReEncrypt(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.
Status Codes
| Status Code | Description |
|---|---|
| 200 | Request succeeded. |
Error Codes
See Error Codes.
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