public class MLDUtil {
public static Key DEFAULT_KEY = null;
public static final String DEFAULT_SECRET_KEY1 = "?:P)(OL><KI*&UJMNHY^%TGBVFR$#EDCXSW@!QAZ";
public static final String DEFAULT_SECRET_KEY2 = "1qaz2wsx3edc4rfv5tgb6yhn7ujm8ik,9ol.0p;/";
public static final String DEFAULT_SECRET_KEY3 = "!QAZ@WSX#EDC$RFV%TGB^YHN&UJM*IK<(OL>)P:?";
public static final String DEFAULT_SECRET_KEY4 = "1qaz@WSX3edc$RFV5tgb^YHN7ujm*IK<9ol.)P:?";
public static final String DEFAULT_SECRET_KEY5 = "!QAZ2wsx#EDC4rfv%TGB6yhn&UJM8ik,(OL>0p;/";
public static final String DEFAULT_SECRET_KEY6 = "1qaz2wsx3edc4rfv5tgb^YHN&UJM*IK<(OL>)P:?";
public static final String DEFAULT_SECRET_KEY = DEFAULT_SECRET_KEY1;
public static final String DES = "DES";
public static final Base32 base32 = new Base32();
static {
DEFAULT_KEY = obtainKey(DEFAULT_SECRET_KEY);
}
/**
* 获得key
**/
public static Key obtainKey(String key) {
if (key == null) {
return DEFAULT_KEY;
}
KeyGenerator generator = null;
try {
generator = KeyGenerator.getInstance(DES);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
generator.init(new SecureRandom(key.getBytes()));
Key key1 = generator.generateKey();
generator = null;
return key1;
}
/**
* 加密<br>
* String明文输入,String密文输出
*/
public static String encode(String str) {
return encode64(null, str);
}
/**
* 加密<br>
* String明文输入,String密文输出
*/
public static String encode64(String key, String str) {
return Base64.encodeBase64URLSafeString(obtainEncode(key, str.getBytes()));
}
/**
* 加密<br>
* String明文输入,String密文输出
*/
public static String encode32(String key, String str) {
return base32.encodeAsString(obtainEncode(key, str.getBytes())).replaceAll("=", "");
}
/**
* 加密<br>
* String明文输入,String密文输出
*/
public static String encode16(String key, String str) {
return Hex.encodeHexString(obtainEncode(key, str.getBytes()));
}
/**
* 解密<br>
* 以String密文输入,String明文输出
*/
public static String decode(String str) {
return decode64(null, str);
}
/**
* 解密<br>
* 以String密文输入,String明文输出
*/
public static String decode64(String key, String str) {
return new String(obtainDecode(key, Base64.decodeBase64(str)));
}
/**
* 解密<br>
* 以String密文输入,String明文输出
*/
public static String decode32(String key, String str) {
return new String(obtainDecode(key, base32.decode(str)));
}
/**
* 解密<br>
* 以String密文输入,String明文输出
*/
public static String decode16(String key, String str) {
try {
return new String(obtainDecode(key, Hex.decodeHex(str.toCharArray())));
} catch (DecoderException e) {
e.printStackTrace();
}
return null;
}
/**
* 加密<br>
* 以byte[]明文输入,byte[]密文输出
*/
private static byte[] obtainEncode(String key, byte[] str) {
byte[] byteFina = null;
Cipher cipher;
try {
Key key1 = obtainKey(key);
cipher = Cipher.getInstance(DES);
cipher.init(Cipher.ENCRYPT_MODE, key1);
byteFina = cipher.doFinal(str);
} catch (Exception e) {
e.printStackTrace();
} finally {
cipher = null;
}
return byteFina;
}
/**
* 解密<br>
* 以byte[]密文输入,以byte[]明文输出
*/
private static byte[] obtainDecode(String key, byte[] str) {
Cipher cipher;
byte[] byteFina = null;
try {
Key key1 = obtainKey(key);
cipher = Cipher.getInstance(DES);
cipher.init(Cipher.DECRYPT_MODE, key1);
byteFina = cipher.doFinal(str);
} catch (Exception e) {
e.printStackTrace();
} finally {
cipher = null;
}
return byteFina;
}
public static byte[] decrypt(byte[] src, byte[] key) throws Exception {
// DES算法要求有一个可信任的随机数源
SecureRandom sr = new SecureRandom();
// 从原始密匙数据创建一个DESKeySpec对象
DESKeySpec dks = new DESKeySpec(key);
// 创建一个密匙工厂，然后用它把DESKeySpec对象转换成一个SecretKey对象
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
SecretKey securekey = keyFactory.generateSecret(dks);
// Cipher对象实际完成解密操作
Cipher cipher = Cipher.getInstance(DES);
// 用密匙初始化Cipher对象
cipher.init(Cipher.DECRYPT_MODE, securekey, sr);
// 正式执行解密操作
return cipher.doFinal(src);
}
public final static String decrypt(String data, String key) {
try {
// 这里就没走
return new String(decrypt(String2byte(data.getBytes()), key.getBytes()));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static byte[] String2byte(byte[] b) {
if ((b.length % 2) != 0)
throw new IllegalArgumentException("长度不是偶数");
byte[] b2 = new byte[b.length / 2];
for (int n = 0; n < b.length; n += 2) {
String item = new String(b, n, 2);
b2[n / 2] = (byte) Integer.parseInt(item, 16);
}
return b2;
}
public static String DataDecrypt(String str, byte[] key) {
String decrypt = null;
try {
byte[] ret = decrypt(Base64.decodeBase64(str), key);
decrypt = new String(ret, "UTF-8");
} catch (Exception e) {
System.out.print(e);
decrypt = str;
}
return decrypt;
}
public static byte[] encrypt(byte[] src, byte[] key) throws Exception {
// DES算法要求有一个可信任的随机数源
SecureRandom sr = new SecureRandom();
// 从原始密匙数据创建DESKeySpec对象
DESKeySpec dks = new DESKeySpec(key);
// 创建一个密匙工厂，然后用它把DESKeySpec转换成一个SecretKey对象
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
SecretKey securekey = keyFactory.generateSecret(dks);
// Cipher对象实际完成加密操作
Cipher cipher = Cipher.getInstance(DES);
// 用密匙初始化Cipher对象
cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
// 正式执行加密操作
return cipher.doFinal(src);
}
public final static String encrypt(String password, String key) {
try {
return byte2String(encrypt(password.getBytes(), key.getBytes()));
} catch (Exception e) {
}
return null;
}
public static String byte2String(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;
}
return hs.toUpperCase();
}
public static String DataEncrypt(String str, byte[] key) {
String encrypt = null;
try {
byte[] ret = encrypt(str.getBytes("UTF-8"), key);
encrypt = new String(Base64.decodeBase64(ret));
} catch (Exception e) {
System.out.print(e);
encrypt = str;
}
return encrypt;
}
public static void main(String[] args) throws InterruptedException {
String encrypt = encrypt("dxjkadmin", DEFAULT_SECRET_KEY2);
System.out.println(encrypt);
String desencryptString = decrypt("00E64BC6DB5530391EE1B6092E213772", DEFAULT_SECRET_KEY2);
System.out.println(desencryptString);
}
}