generate HmacSHA1 Mac Signature - Java Security

Java examples for Security:SHA

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Description

generate HmacSHA1 Mac Signature

Demo Code


import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import org.apache.log4j.Logger;
import sun.misc.BASE64Encoder;

public class Main{
    public static void main(String[] argv) throws Exception{
        String secret = "java2s.com";
        String data = "java2s.com";
        System.out.println(generateMacSignature(secret,data));
    }// ww  w.j  a va 2s .  c  o  m
    private static final String HMAC_SHA1 = "HmacSHA1";
    private static final Logger logger = Logger.getLogger(AuthUtils.class);
    public static String generateMacSignature(String secret, String data) {
        logger.debug("generateDate is:" + data);
        logger.debug("secret is:" + secret);
        byte[] byteHMAC = null;

        try {
            Mac mac = Mac.getInstance(HMAC_SHA1);
            SecretKey secretKey = new SecretKeySpec(
                    secret.getBytes("utf-8"), HMAC_SHA1);

            mac.init(secretKey);
            byteHMAC = mac.doFinal(data.getBytes("utf-8"));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        String result = new BASE64Encoder().encode(byteHMAC);
        logger.debug("generateMacSignature is:" + result);
        return result;

    }
}

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