AES,DESede/CBC/PKCS5Padding

工作中用到一个DES解码问题，废了一份周折总算做出来了。这里把代码贴出来，希望对大家有用。

import java.security.Key;
import java.security.Security;

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import javax.crypto.spec.IvParameterSpec;

public class DESTool {
	private static final String Algorithm = "DESede"; //定义加密算法
	public static final String CIPHER_ALGORITHM = "DESede/CBC/PKCS5Padding";
	//public static final String CIPHER_ALGORITHM = "AES/CBC/PKCS5Padding";
	 public static final String IV = "12345678";

	/**
	 * 加密
	 * @param datasource
	 * @param password
	 * @return
	 */

	public static byte[] desCrypto(byte[] src, String password) {
		try {
			
			DESedeKeySpec deskey = new DESedeKeySpec(password.getBytes());
			SecretKeyFactory skf = SecretKeyFactory.getInstance(Algorithm);
			Key key = skf.generateSecret(deskey);
			Cipher cipher1 = Cipher.getInstance(CIPHER_ALGORITHM);
			IvParameterSpec iv = new IvParameterSpec(IV.getBytes());
			cipher1.init(Cipher.ENCRYPT_MODE, key,iv);
			
			return cipher1.doFinal(src);//在单一方面的加密或解密  
			
		} catch (java.security.NoSuchAlgorithmException e1) {
			e1.printStackTrace();
		} catch (javax.crypto.NoSuchPaddingException e2) {
			e2.printStackTrace();
		} catch (java.lang.Exception e3) {
			e3.printStackTrace();
		}
		return null;
	}

	/**
	 * 解密
	 * @param src
	 * @param password
	 * @return
	 * @throws Exception
	 */
	public static byte[] decrypt(byte[] src, String password) {
		try {
			DESedeKeySpec deskey = new DESedeKeySpec(password.getBytes());
			SecretKeyFactory skf = SecretKeyFactory.getInstance(Algorithm);
			Key key = skf.generateSecret(deskey);
			Cipher cipher1 = Cipher.getInstance(CIPHER_ALGORITHM);
			IvParameterSpec iv = new IvParameterSpec(IV.getBytes());
			cipher1.init(Cipher.DECRYPT_MODE, key,iv);
			return cipher1.doFinal(src);
		} catch (java.security.NoSuchAlgorithmException e1) {
			// TODO: handle exception  
			e1.printStackTrace();
		} catch (javax.crypto.NoSuchPaddingException e2) {
			e2.printStackTrace();
		} catch (java.lang.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 = (java.lang.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();
	}
	
	//十六进制字符串转换成整形数组
	public static byte[] hex2byte(String hex) {
		 int arrayLenth = hex.length() / 2;
		 byte[] inputByteArray = new byte[arrayLenth];
         for (int x = 0; x < arrayLenth; x++)
         {
        	 int beginIndex = x * 2;
        	 int  endIndex = beginIndex +2;
        	 int coventInt = Integer.valueOf(hex.substring(beginIndex,endIndex),16);
             inputByteArray[x] = (byte)coventInt;
         }  
         
         return inputByteArray;

	}
	public static String util_decrypt(String encodString){
		String  password = "0123456789abcd9876543210";
		byte[] srcBytes = decrypt(hex2byte(encodString),password);
		return new String(srcBytes);
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
        // TODO Auto-generated method stub  
        //添加新安全算法,如果用JCE就要把它添加进去  
        Security.addProvider(new com.sun.crypto.provider.SunJCE());   
        String password="0123456789abcd9876543210";  
        String szSrc = "37231dcf2bc2cf202f47b419c1cfb9fce1c14d2e86a93b6d1012fefff90c6ea6719a311e7c4e3e757fe98426226148d75eadbade59e6e440f8459beac47be790";  
        //String szSrc = "{\"cn\":\"xiongjun\",\"sn\":\"xiongjun\",\"__tick\":1395929492055}";
        //System.out.println("加密前的字符串:" + szSrc);  
        //byte[] encoded = desCrypto(szSrc.getBytes(),password);  
        //System.out.println("加密后的字符串:" + byte2Hex(encoded));  
        byte[] srcBytes = decrypt(hex2byte(szSrc),password);  
        //byte[] srcBytes = decrypt(encoded,password);  
        System.out.println("解密后的字符串:" + new String(srcBytes));
       
          
        System.out.println(password.length()); 
	}