Java SHA256 sha256(String string, String secret)

Description

sha

License

Open Source License

Declaration

public static String sha256(String string, String secret) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;

public class Main {
    public static String sha256(String string, String secret) {
        try {/*w  ww. ja  va 2  s  .  c o  m*/
            SecretKeySpec signingKey = new SecretKeySpec(secret.getBytes(), "HmacSHA256");

            final Mac mac = Mac.getInstance("HmacSHA256");
            mac.init(signingKey);

            byte[] digest = mac.doFinal(string.getBytes("UTF-8"));
            digest = mac.doFinal(string.getBytes());

            BigInteger bigInteger = new BigInteger(1, digest);
            return String.format("%0" + (digest.length << 1) + "x", bigInteger);

        } catch (NoSuchAlgorithmException nsae) {
            throw new RuntimeException("No HMac SHA256 algorithm");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("No UTF-8");
        } catch (InvalidKeyException e) {
            throw new RuntimeException("Invalid key exception while converting to HMac SHA256");
        }
    }
}

Related

1. sha256(String src)
2. sha256(String srcStr)
3. sha256(String str)
4. sha256(String str)
5. sha256(String string)
6. sha256(String strSrc)
7. SHA256(String text)
8. SHA256(String text)
9. sha256(String text)