EncryptUtil.java
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package com.ectrip.cyt.utils;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
/**
* 基础加密算法类?当前支持des,md5码?
*
* @author huhaopeng
*/
public class EncryptUtil {
/**
* MD5值计码?p>
* MD5的算法在RFC1321 中定码?
* 在RFC 1321中，给出了Test suite用来码?码码你的实现是否正确码?
* MD5 ("") = d41d8cd98f00b204e9800998ecf8427e
* MD5 ("a") = 0cc175b9c0f1b6a831c399e269772661
* MD5 ("abc") = 900150983cd24fb0d6963f7d28e17f72
* MD5 ("message digest") = f96b697d7cb7938d525a2f31aaf161d0
* MD5 ("abcdefghijklmnopqrstuvwxyz") = c3fcd3d76192e4007dfb496cca67e13b
* @param str 源字符串
* @return md5码?
*/
public final static byte[] md5(String str) {
try {
byte[] res = str.getBytes("UTF-8");
MessageDigest mdTemp = MessageDigest.getInstance("MD5".toUpperCase());
mdTemp.update(res);
byte[] hash = mdTemp.digest();
return hash;
} catch (Exception e) {
return null;
}
}
//hex repr. of md5
public final static String MD5Hex(String input) {
String s = null;
char hexDigits[] = { // 用来将字节转换成 16 进制表示的字码?
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
'e', 'f'};
try {
MessageDigest md = MessageDigest
.getInstance("MD5");
md.update(input.getBytes("utf-8"));
byte tmp[] = md.digest();
char str[] = new char[16 * 2];
int k = 0;
for (int i = 0; i < 16; i++) {
byte byte0 = tmp[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
s = new String(str);
} catch (Exception e) {
e.printStackTrace();
}
return s;
}
// 加密后解码?
public static String JM(byte[] inStr) {
String newStr = new String(inStr);
char[] a = newStr.toCharArray();
for (int i = 0; i < a.length; i++) {
a[i] = (char) (a[i] ^ 't');
}
String k = new String(a);
return k;
}
/**
* @param key 24位密码?
* @param str 源字符串
* @return
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
* @throws InvalidKeyException
* @throws UnsupportedEncodingException
* @throws InvalidKeySpecException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
public static byte[] des3Encrypt(String key, String str) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, UnsupportedEncodingException, InvalidKeySpecException, IllegalBlockSizeException, BadPaddingException {
byte[] newkey = key.getBytes();
SecureRandom sr = new SecureRandom();
DESedeKeySpec dks = new DESedeKeySpec(newkey);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");
SecretKey securekey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
byte[] bt = cipher.doFinal(str.getBytes("utf-8"));
return bt;
}
public final static String taoBaoMD5(String s) {
char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'};
try {
byte[] strTemp = s.getBytes("GBK");
MessageDigest mdTemp = MessageDigest.getInstance("MD5");
mdTemp.update(strTemp);
byte[] md = mdTemp.digest();
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
} catch (Exception e) {
return null;
}
}
}