Generate a random number
Function
This API is used to generate an 8-bit to 8,192-bit random number.
Calling Method
For details, see Calling APIs.
URI
POST /v1.0/{project_id}/kms/gen-random
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
project_id |
Yes |
String |
Project ID |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
X-Auth-Token |
Yes |
String |
User token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token. |
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
random_data_length |
Yes |
String |
Bit length of a random number. The value must be a multiple of 8 and ranges from 8 to 8192, for example, 512. |
sequence |
No |
String |
A 36-byte serial number of a request message, for example, 919c82d4-8046-4722-9094-35c3c6524cff |
Response Parameters
Status code: 200
Parameter |
Type |
Description |
---|---|---|
random_data |
String |
Random number in hexadecimal format. Two characters represent 1 byte. The length of the random number must be the same as that of the user input parameter random_data_length. |
Status code: 400
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Status code: 401
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Status code: 403
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Status code: 404
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Status code: 500
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Status code: 502
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Status code: 504
Parameter |
Type |
Description |
---|---|---|
error |
Object |
Error message. |
Parameter |
Type |
Description |
---|---|---|
error_code |
String |
Error code returned by the error request |
error_msg |
String |
Error information returned by the error request |
Example Requests
Generate a 512-bit random number.
{ "random_data_length" : "512" }
Example Responses
Status code: 200
Request succeeded.
{ "random_data" : "5791C223E87120BE4B98D168F47A58BB2A88834EEADC" }
SDK Sample Code
The SDK sample code is as follows.
Generate a 512-bit random number.
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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 CreateRandomSolution { 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"); ICredential auth = new BasicCredentials() .withAk(ak) .withSk(sk); KmsClient client = KmsClient.newBuilder() .withCredential(auth) .withRegion(KmsRegion.valueOf("<YOUR REGION>")) .build(); CreateRandomRequest request = new CreateRandomRequest(); GenRandomRequestBody body = new GenRandomRequestBody(); body.withRandomDataLength("512"); request.withBody(body); try { CreateRandomResponse response = client.createRandom(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()); } } } |
Generate a 512-bit random number.
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# 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"] credentials = BasicCredentials(ak, sk) client = KmsClient.new_builder() \ .with_credentials(credentials) \ .with_region(KmsRegion.value_of("<YOUR REGION>")) \ .build() try: request = CreateRandomRequest() request.body = GenRandomRequestBody( random_data_length="512" ) response = client.create_random(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
Generate a 512-bit random number.
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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") auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). Build() client := kms.NewKmsClient( kms.KmsClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.CreateRandomRequest{} request.Body = &model.GenRandomRequestBody{ RandomDataLength: "512", } response, err := client.CreateRandom(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. |
400 |
Invalid request parameters. |
401 |
Username and password are required for the requested page. |
403 |
Authentication failed. |
404 |
The resource does not exist. |
500 |
Internal service error. |
502 |
Failed to complete the request. The server receives an invalid response from the upstream server. |
504 |
Gateway timed out. |
Error Codes
See Error Codes.
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