Android app to connect to AWS IoT using X.509 certificate

_x000D_ _x000D_ I am writing an Android application to connect a sensor to an AWS IoT service. I have been provided with the X.509 certificate, a pair of public-private key, clientEndpoint, etc. I am trying to follow the AWS's Sample code (see here). The instructions are clear, but I don't want to generate the certificate and the keys (I already have them). Below is the code snippet: // Create a new private key and certificate. This call // creates both on the server and returns them to the // device. CreateKeysAndCertificateRequest createKeysAndCertificateRequest = new CreateKeysAndCertificateRequest(); createKeysAndCertificateRequest.setSetAsActive(true); final CreateKeysAndCertificateResult createKeysAndCertificateResult; createKeysAndCertificateResult = mIotAndroidClient.createKeysAndCertificate(createKeysAndCertificateRequest); Log.i(LOG_TAG,"Cert ID: " +createKeysAndCertificateResult.getCertificateId() +" created."); // store in keystore for use in MQTT client // saved as alias "default" so a new certificate isn't // generated each run of this application AWSIotKeystoreHelper.saveCertificateAndPrivateKey(certificateId,createKeysAndCertificateResult.getCertificatePem(),createKeysAndCertificateResult.getKeyPair().getPrivateKey(), keystorePath, keystoreName, keystorePassword); // load keystore from file into memory to pass on // connection clientKeyStore = AWSIotKeystoreHelper.getIotKeystore(certificateId,keystorePath, keystoreName, keystorePassword); How can I use the existing certificates files instead of generating new certificate and keys? Thank you