/*字符串 DESede(3DES) 加密*/
import java.io.IOException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;public class EThreeDES{private static final String Algorithm = "DESede"; //定义 加密算法,可用 DES,DESede,Blowfish//keybyte为加密密钥，长度为24字节//src为被加密的数据缓冲区（源）//3DES加密public static byte[] encryptMode(byte[] keybyte, byte[] src) {try {//生成密钥SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);//加密Cipher c1 = Cipher.getInstance(Algorithm);c1.init(Cipher.ENCRYPT_MODE, deskey);return c1.doFinal(src);} catch (java.security.NoSuchAlgorithmException e1) {e1.printStackTrace();} catch (javax.crypto.NoSuchPaddingException e2) {e2.printStackTrace();} catch (Exception e3) {e3.printStackTrace();}return null;}//keybyte为加密密钥，长度为24字节//src为加密后的缓冲区//3DES解密public static byte[] decryptMode(byte[] keybyte, byte[] src) {try {//生成密钥SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);//解密Cipher c1 = Cipher.getInstance(Algorithm);c1.init(Cipher.DECRYPT_MODE, deskey);return c1.doFinal(src);} catch (java.security.NoSuchAlgorithmException e1) {e1.printStackTrace();} catch (javax.crypto.NoSuchPaddingException e2) {e2.printStackTrace();} catch (Exception e3) {e3.printStackTrace();}return null;}//转换成十六进制字符串public static String byte2hex(byte[] b) {String hs="";String stmp="";for (int n=0;n<b.length;n++) {stmp=(Integer.toHexString(b[n] & 0XFF));if (stmp.length()==1) hs=hs+"0"+stmp;else hs=hs+stmp;if (n<b.length-1) hs=hs+":";}return hs.toUpperCase();}//转为base64public String enBase64(byte[] bparm) throws IOException {BASE64Encoder enc=new BASE64Encoder();String bdnParm = enc.encodeBuffer(bparm);return bdnParm;}//从BASE64反转回来public byte[] deBase64(String parm) throws IOException {BASE64Decoder dec=new BASE64Decoder();byte[] dnParm = dec.decodeBuffer(parm);return dnParm;}public static String replace(String source, String oldString,String newString) {StringBuffer output = new StringBuffer();int lengthOfSource = source.length();int lengthOfOld = oldString.length();int posStart = 0;int pos; //while ( (pos = source.indexOf(oldString, posStart)) >= 0) {output.append(source.substring(posStart, pos));output.append(newString);posStart = pos + lengthOfOld;}if (posStart < lengthOfSource) {output.append(source.substring(posStart));}return output.toString();}/*** 3DES解密* @param toThreeDES* @return*/public static String deThreeDES(String toThreeDES){String deThreeDes="";if (toThreeDES==null || toThreeDES.equals("")){deThreeDes="";}else{try{EThreeDES edes = new EThreeDES();String key_VALUE = "A314BA5A3C85E86KK887WSWS";byte[] keyBytes = key_VALUE.getBytes();byte[] toBASE64ToStr = edes.deBase64(toThreeDES);byte[] toWK_DESToStr = EThreeDES.decryptMode(keyBytes, toBASE64ToStr);deThreeDes = new String(toWK_DESToStr,"utf-8");}catch(Exception ex){//System.out.println("3DES解密出错!!!"+ex.getMessage());}}return deThreeDes;}public static void main(String[] args) throws IOException{EThreeDES eThreeDES = new EThreeDES();String KEY = "C314BONC3C85E86KK996WSWS"; //密匙//加密String original = "gg2A298393didkdj$kdnum$ad_001$2017-03-08 12:21:33";byte[] eBy = EThreeDES.encryptMode(KEY.getBytes(),original.getBytes());String eBase64 = eThreeDES.enBase64(eBy);//System.out.println("3DES加密后的字符串:" + eBase64);//解密String dBase64 = eBase64;byte[] dBy = eThreeDES.deBase64(dBase64);byte[] srcBytes = decryptMode(KEY.getBytes(), dBy);//System.out.println("3DES解密后的字符串:" + new String(srcBytes,"utf-8"));}}