package com.guozhi.bloodanalysis.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class EncryptUtils {

    public static String encryptSHA256(String str){
        return sha("SHA-256",str);
    }
    private static String sha(String type,String str){
        String result = null;
        try {
            MessageDigest md = MessageDigest.getInstance(type);
            md.update(str.getBytes());
            byte[] byteBuffer = md.digest();
            StringBuilder strHexString = new StringBuilder();
            for (byte b : byteBuffer) {
                String hex = Integer.toHexString(0xff & b);
                if (hex.length() == 1) {
                    strHexString.append('0');
                }
                strHexString.append(hex);
            }
            result = strHexString.toString();
        }catch (NoSuchAlgorithmException e){
            e.printStackTrace();
        }
        return result;
    }
}