(Go) 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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    // 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.

    var success bool

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

    http := chilkat.NewHttp()

    // 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.SetAuthToken(json.Emit())

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

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

        statusCode := http.LastStatus()
        if statusCode == 0 {
            // We did not get a response from the server..
            fmt.Println(http.LastErrorText())
        } else {
            // We received a response, but it was an error.
            fmt.Println("Error response status code: ", statusCode)
            fmt.Println("Error response:")
            fmt.Println(*sbResponse.GetAsString())
        }

        json.DisposeJsonObject()
        http.DisposeHttp()
        sbResponse.DisposeStringBuilder()
        return
    }

    jsonResp := chilkat.NewJsonObject()
    jsonResp.LoadSb(sbResponse)
    jsonResp.SetEmitCompact(false)

    fmt.Println(*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.

    cert := chilkat.NewCert()
    success = cert.LoadFromBase64(*jsonResp.StringOf("cer"))
    if success == false {
        fmt.Println(cert.LastErrorText())
        fmt.Println("Failed to load certificate from Base64 DER.")
        json.DisposeJsonObject()
        http.DisposeHttp()
        sbResponse.DisposeStringBuilder()
        jsonResp.DisposeJsonObject()
        cert.DisposeCert()
        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"
    sbId := chilkat.NewStringBuilder()
    sbId.Append(*jsonResp.StringOf("id"))
    certVersion := sbId.GetAfterFinal("/",false)
    fmt.Println("The key vault cert version is ", *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
    //     }
    //   }
    // }

    json.DisposeJsonObject()
    http.DisposeHttp()
    sbResponse.DisposeStringBuilder()
    jsonResp.DisposeJsonObject()
    cert.DisposeCert()
    sbId.DisposeStringBuilder()