import java.security.MessageDigest;

public class EncryptionKit {

    public static String md5Encrypt(String srcStr){

        return encrypt("MD5", srcStr);

    }

    public static String sha1Encrypt(String srcStr){

        return encrypt("SHA-1", srcStr);

    }

    public static String sha256Encrypt(String srcStr){

        return encrypt("SHA-256", srcStr);

    }

    public static String sha384Encrypt(String srcStr){

        return encrypt("SHA-384", srcStr);

    }

    public static String sha512Encrypt(String srcStr){

        return encrypt("SHA-512", srcStr);

    }

    public static String encrypt(String algorithm, String srcStr) {

        try {

            StringBuilder result = new StringBuilder();

            MessageDigest md = MessageDigest.getInstance(algorithm);

            byte[] bytes = md.digest(srcStr.getBytes("utf-8"));

            for (byte b :bytes) {

                String hex = Integer.toHexString(b&0xFF);

                if (hex.length() == 1)

                    result.append("0");

                result.append(hex);

            }

            return result.toString();

        }

        catch (Exception e) {

            throw new RuntimeException(e);

        }

    }

}