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How to send HTTPS request with Rest Assured using .crt certificate and public .key token

I need to send https request with REST assured having client .crt certificate and public key .key How do I send request if my certificate and key in project like

"src/test/resources/certificate.crt"
"src/test/resources/key.key"

Answer

String clientCertificatePath = "certs/ClientCertificate.p12";
String trustStorePath = "C:/Program Files/Java/jre1.8.0_91/lib/security/cacerts";
String trustStorePassword = "changeit"; // default trust store password

KeyStore clientStore = KeyStore.getInstance("PKCS12");
clientStore.load(new FileInputStream(clientCertificatePath), clientPassword.toCharArray());

KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
kmf.init(clientStore, clientPassword.toCharArray());
KeyManager[] kms = kmf.getKeyManagers();

KeyStore trustStore = KeyStore.getInstance("JKS");
trustStore.load(new FileInputStream(trustStorePath), trustStorePassword.toCharArray());

TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(trustStore);
TrustManager[] tms = tmf.getTrustManagers();

SSLContext sslContext = null;
sslContext = SSLContext.getInstance("TLS");
sslContext.init(kms, tms, new SecureRandom());

SSLSocketFactory lSchemeSocketFactory=null;

lSchemeSocketFactory = new SSLSocketFactory(clientStore, clientPassword, trustStore);

// configure Rest Assured
RestAssured.config = RestAssured.config().sslConfig(sslConfig().with().sslSocketFactory(lSchemeSocketFactory).and().allowAllHostnames());