Key Management Service:Sample code for signing and verification

Complete example

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;

using Tea;
using Tea.Utils;


namespace AlibabaCloud.Dkms.Gcs.Sdk.Example
{
    public class AsymmetricSignVerifySample 
    {

        public static AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config CreateKmsInstanceConfig(string clientKeyFile, string password, string endpoint, string caFilePath)
        {
            AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config config = new AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config();
            config.ClientKeyFile = clientKeyFile;
            config.Password = password;
            config.Endpoint = endpoint;
            config.CaFilePath = caFilePath;
            return config;
        }

        public static async Task<AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config> CreateKmsInstanceConfigAsync(string clientKeyFile, string password, string endpoint, string caFilePath)
        {
            AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config config = new AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config();
            config.ClientKeyFile = clientKeyFile;
            config.Password = password;
            config.Endpoint = endpoint;
            config.CaFilePath = caFilePath;
            return config;
        }

        public static AlibabaCloud.Dkms.Gcs.Sdk.Client CreateClient(AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config kmsInstanceConfig)
        {
            return new AlibabaCloud.Dkms.Gcs.Sdk.Client(kmsInstanceConfig);
        }

        public static async Task<AlibabaCloud.Dkms.Gcs.Sdk.Client> CreateClientAsync(AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config kmsInstanceConfig)
        {
            return new AlibabaCloud.Dkms.Gcs.Sdk.Client(kmsInstanceConfig);
        }

        public static AlibabaCloud.Dkms.Gcs.Sdk.Models.SignResponse Sign(AlibabaCloud.Dkms.Gcs.Sdk.Client client, string keyId, string algorithm, byte[] message, string messageType)
        {
            AlibabaCloud.Dkms.Gcs.Sdk.Models.SignRequest request = new AlibabaCloud.Dkms.Gcs.Sdk.Models.SignRequest
            {
                KeyId = keyId,
                Algorithm = algorithm,
                Message = message,
                MessageType = messageType,
            };
            //Ignore CA certificate authentication.
            //AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions runtime = new AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions();
            //runtime.IgnoreSSL = true;
            //return client.SigntWithOptions(request,runtime);
            return client.Sign(request);
        }

        public static async Task<AlibabaCloud.Dkms.Gcs.Sdk.Models.SignResponse> SignAsync(AlibabaCloud.Dkms.Gcs.Sdk.Client client, string keyId, string algorithm, byte[] message, string messageType)
        {
            AlibabaCloud.Dkms.Gcs.Sdk.Models.SignRequest request = new AlibabaCloud.Dkms.Gcs.Sdk.Models.SignRequest
            {
                KeyId = keyId,
                Algorithm = algorithm,
                Message = message,
                MessageType = messageType,
            };
            //Ignore CA certificate authentication.
            //AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions runtime = new AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions();
            //runtime.IgnoreSSL = true;
            //return await client.SignWithOptionsAsync(request,runtime);
            return await client.SignAsync(request);
        }

        public static AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyResponse Verify(AlibabaCloud.Dkms.Gcs.Sdk.Client client, string keyId, string algorithm, byte[] message, string messageType, byte[] signature)
        {
            AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyRequest request = new AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyRequest
            {
                KeyId = keyId,
                Algorithm = algorithm,
                Message = message,
                MessageType = messageType,
                Signature = signature,
            };
            //Ignore CA certificate authentication.
            //AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions runtime = new AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions();
            //runtime.IgnoreSSL = true;
            //return client.VerifyWithOptions(request,runtime);
            return client.Verify(request);
        }

        public static async Task<AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyResponse> VerifyAsync(AlibabaCloud.Dkms.Gcs.Sdk.Client client, string keyId, string algorithm, byte[] message, string messageType, byte[] signature)
        {
            AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyRequest request = new AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyRequest
            {
                KeyId = keyId,
                Algorithm = algorithm,
                Message = message,
                MessageType = messageType,
                Signature = signature,
            };
            //Ignore CA certificate authentication.
            //AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions runtime = new AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions();
            //runtime.IgnoreSSL = true;
            //return await client.VerifWithOptionsAsync(request,runtime);
            return await client.VerifyAsync(request);
        }

        public static void Main(string[] args)
        {
            string regionId = "<REGION_ID>";
            // CA certificate of the KMS instance.
            string caFilePath = "<CA_FILE_PATH>";
            // Set the endpoint to <your KMS Instance Id>.cryptoservice.kms.aliyuncs.com.
            string endpoint = "<ENDPOINT>";
            // Set the Client Key and Client Key password.
            AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config kmsInstanceConfig = CreateKmsInstanceConfig(AlibabaCloud.DarabonbaEnv.Client.GetEnv("ClientKeyFile"), AlibabaCloud.DarabonbaEnv.Client.GetEnv("Password"), endpoint, caFilePath);
            AlibabaCloud.Dkms.Gcs.Sdk.Client client = CreateClient(kmsInstanceConfig);
            //sign
            string keyId = "<KEY_ID>";
            string algorithm = "<ALGORITHM>";
            byte[] message = AlibabaCloud.DarabonbaEncodeUtil.Encoder.Base64Decode("<MESSAGE_BASE64>");
            string messageType = "<MESSAGE_TYPE>";
            AlibabaCloud.Dkms.Gcs.Sdk.Models.SignResponse signRes = Sign(client, keyId, algorithm, message, messageType);
            //verify
            AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyResponse verifyRes = Verify(client, signRes.KeyId, signRes.Algorithm, message, signRes.MessageType, signRes.Signature);
            string verifyResJson = AlibabaCloud.TeaUtil.Common.ToJSONString(AlibabaCloud.TeaUtil.Common.ToMap(verifyRes));
            AlibabaCloud.TeaConsole.Client.Log("verifyRes:" + verifyResJson);
        }


    }
}

Example walkthrough

Initialize client

using System;

string regionId = "<REGION_ID>";

// The CA certificate of the KMS instance.
string caFilePath = "<CA_CERTIFICATE>";

// Set the endpoint to <your KMS Instance Id>.cryptoservice.kms.aliyuncs.com.
string endpoint = "<ENDPOINT>";

// Set the Client Key and the security token of the Client Key.
AlibabaCloud.Dkms.Gcs.OpenApi.Models.Config kmsInstanceConfig = CreateKmsInstanceConfig(AlibabaCloud.DarabonbaEnv.Client.GetEnv("ClientKeyFile"), AlibabaCloud.DarabonbaEnv.Client.GetEnv("Password"), endpoint, caFilePath);
AlibabaCloud.Dkms.Gcs.Sdk.Client client = CreateClient(kmsInstanceConfig);

Call the Sign API to perform digital signing using an asymmetric key

public static AlibabaCloud.Dkms.Gcs.Sdk.Models.SignResponse Sign(AlibabaCloud.Dkms.Gcs.Sdk.Client client, string keyId, string algorithm, byte[] message, string messageType)
        {
            AlibabaCloud.Dkms.Gcs.Sdk.Models.SignRequest request = new AlibabaCloud.Dkms.Gcs.Sdk.Models.SignRequest
            {
                KeyId = keyId,
                Algorithm = algorithm,
                Message = message,
                MessageType = messageType,
            };
            //Ignore CA certificate authentication.
            //AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions runtime = new AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions();
            //runtime.IgnoreSSL = true;
            //return client.SigntWithOptions(request,runtime);
            return client.Sign(request);
        }

Call the Verify API to verify the digital signature using an asymmetric key

       public static AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyResponse Verify(AlibabaCloud.Dkms.Gcs.Sdk.Client client, string keyId, string algorithm, byte[] message, string messageType, byte[] signature)
        {
            AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyRequest request = new AlibabaCloud.Dkms.Gcs.Sdk.Models.VerifyRequest
            {
                KeyId = keyId,
                Algorithm = algorithm,
                Message = message,
                MessageType = messageType,
                Signature = signature,
            };
            //Ignore CA certificate authentication.
            //AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions runtime = new AlibabaCloud.Dkms.Gcs.OpenApiUtil.Models.RuntimeOptions();
            //runtime.IgnoreSSL = true;
            //return client.VerifyWithOptions(request,runtime);
            return client.Verify(request);
        }