jmeter sha256 signature

jmeter-sha256

// beanshell preprocessor

import org.apache.commons.httpclient.auth.DigestScheme; // necessary imports
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.jmeter.protocol.http.control.Header;

long timestamp = System.currentTimeMillis() / 1000L;
String clientID = "***";
String clientSecret = "****";

String authClient = "Doorman-SHA256 Credential=" + clientID;
String combined = clientID + clientSecret + String.valueOf(timestamp);
String sha256hex = DigestUtils.sha256Hex(combined);  

sampler.getHeaderManager().add(new Header("Signature", sha256hex));
sampler.getHeaderManager().add(new Header("Authorization", authClient));
sampler.getHeaderManager().add(new Header("Timestamp", String.valueOf(timestamp)));