(Unicode C++) Azure Key Vault Get the Latest Version of a Certificate

See more Azure Key Vault Examples

Demonstrates how to get the latest version of a certificate in Azure Key Vault.

Note: This example requires Chilkat v9.5.0.96 or later.

For more information, see https://learn.microsoft.com/en-us/rest/api/keyvault/certificates/get-certificate/get-certificate?tabs=HTTP

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#include <CkJsonObjectW.h>
#include <CkHttpW.h>
#include <CkStringBuilderW.h>
#include <CkCertW.h>

void ChilkatSample(void)
    {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // See Azure Key Vault Get Certificates for a more detailed explanation
    // for how Chilkat is automatically getting the OAuth2 access token for your application.

    bool success;

    // Provide information needed for Chilkat to automatically get an OAuth2 access token as needed.
    CkJsonObjectW json;
    json.UpdateString(L"client_id",L"APP_ID");
    json.UpdateString(L"client_secret",L"APP_PASSWORD");
    json.UpdateString(L"resource",L"https://vault.azure.net");
    json.UpdateString(L"token_endpoint",L"https://login.microsoftonline.com/TENANT_ID/oauth2/token");

    CkHttpW http;

    // Instead of providing an actual access token, we give Chilkat the information that allows it to 
    // automatically fetch the access token using the OAuth2 client credentials flow.
    http.put_AuthToken(json.emit());

    // Replace VAULT_NAME with the name of your Azure Key Vault.
    http.SetUrlVar(L"certName",L"importCert01");

    CkStringBuilderW sbResponse;
    success = http.QuickGetSb(L"https://VAULT_NAME.vault.azure.net/certificates/{$certName}?api-version=7.4",sbResponse);
    if (success == false) {

        int statusCode = http.get_LastStatus();
        if (statusCode == 0) {
            // We did not get a response from the server..
            wprintf(L"%s\n",http.lastErrorText());
        }
        else {
            // We received a response, but it was an error.
            wprintf(L"Error response status code: %d\n",statusCode);
            wprintf(L"Error response:\n");
            wprintf(L"%s\n",sbResponse.getAsString());
        }

        return;
    }

    CkJsonObjectW jsonResp;
    jsonResp.LoadSb(sbResponse);
    jsonResp.put_EmitCompact(false);

    wprintf(L"%s\n",jsonResp.emit());

    // A sample JSON response is show at the bottom.

    // Let's do two things with the result.
    // 1) Load the DER of the cert into a Chilkat Cert object.
    // 2) Get the Key Vault version id of the certificate.

    CkCertW cert;
    success = cert.LoadFromBase64(jsonResp.stringOf(L"cer"));
    if (success == false) {
        wprintf(L"%s\n",cert.lastErrorText());
        wprintf(L"Failed to load certificate from Base64 DER.\n");
        return;
    }

    // The Azure Key Vault's "version" of the certificate is the hex string at the end of the "id", "kid", and "sid" JSON members.
    // For example:  "7140c8755ed14839b5d86a9f7e7f0497"
    CkStringBuilderW sbId;
    sbId.Append(jsonResp.stringOf(L"id"));
    const wchar_t *certVersion = sbId.getAfterFinal(L"/",false);
    wprintf(L"The key vault cert version is %s\n",certVersion);

    // {
    //   "id": "https://kvchilkat.vault.azure.net/certificates/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
    //   "kid": "https://kvchilkat.vault.azure.net/keys/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
    //   "sid": "https://kvchilkat.vault.azure.net/secrets/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
    //   "x5t": "I_e3776K5Q_6PN1HHvJoI2ZGQRQ",
    //   "cer": "MIIGXjCCB .... cjTsi7yIY=",
    //   "attributes": {
    //     "enabled": true,
    //     "nbf": 1633996800,
    //     "exp": 1728691199,
    //     "created": 1697411128,
    //     "updated": 1697411128,
    //     "recoveryLevel": "CustomizedRecoverable+Purgeable",
    //     "recoverableDays": 7
    //   },
    //   "policy": {
    //     "id": "https://kvchilkat.vault.azure.net/certificates/importCert01/policy",
    //     "key_props": {
    //       "exportable": true,
    //       "kty": "RSA",
    //       "key_size": 4096,
    //       "reuse_key": false
    //     },
    //     "secret_props": {
    //       "contentType": "application/x-pkcs12"
    //     },
    //     "x509_props": {
    //       "subject": "CN=\"Chilkat Software, Inc.\", O=\"Chilkat Software, Inc.\", S=Illinois, C=US",
    //       "ekus": [
    //         "1.3.6.1.5.5.7.3.3"
    //       ],
    //       "key_usage": [
    //         "digitalSignature"
    //       ],
    //       "validity_months": 37,
    //       "basic_constraints": {
    //         "ca": false
    //       }
    //     },
    //     "lifetime_actions": [
    //       {
    //         "trigger": {
    //           "lifetime_percentage": 80
    //         },
    //         "action": {
    //           "action_type": "EmailContacts"
    //         }
    //       }
    //     ],
    //     "issuer": {
    //       "name": "Unknown"
    //     },
    //     "attributes": {
    //       "enabled": true,
    //       "created": 1697411128,
    //       "updated": 1697411128
    //     }
    //   }
    // }
    }