Generating an API Signature - Kayako Developer Resources - Kayako Wiki

gistfile1.java

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.GeneralSecurityException;
 
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
 
import org.bouncycastle.util.encoders.Base64Encoder;
 
public class Kayakoapi {
 
    public static void main(String[] args) throws GeneralSecurityException, IOException {
 
        String secretKey = "secretKey";
        String salt = "0123456789";
 
        String generateHmacSHA256Signature = generateHmacSHA256Signature(salt, secretKey);
        System.out.println("Signature: " + generateHmacSHA256Signature);
 
        String urlEncodedSign = URLEncoder.encode(generateHmacSHA256Signature, "UTF-8");
 
        System.out.println("Url encoded value: " + urlEncodedSign);
    }
 
    public static String generateHmacSHA256Signature(String data, String key) throws GeneralSecurityException {
        byte[] hmacData = null;
 
        try {
            SecretKeySpec secretKey = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
            Mac mac = Mac.getInstance("HmacSHA256");
            mac.init(secretKey);
            hmacData = mac.doFinal(data.getBytes("UTF-8"));
            return new Base64Encoder().encode(hmacData);
        } catch (UnsupportedEncodingException e) {
            throw new GeneralSecurityException(e);
        }
    }
}