import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.crypto.*;
import javax.crypto.spec.DESKeySpec;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.InvalidKeySpecException;
@Slf4j
public class DESUtils {
private final static Logger logger = LoggerFactory.getLogger(DESUtils.class);
private final static String DES = "DES";
private final static String key = "fd6b65df3c826c385edc0705d27bd1be";
public static String encrypt(String data) {
return encrypt(data, key);
}
public static String decrypt(String data) throws Exception {
return decrypt(data, key);
}
private static String encrypt(String data, String key) {
if(data ==null){
return null;
}
byte[] bt = encrypt(data.getBytes(), key.getBytes());
return base64Utils.encode(bt);
}
private static String decrypt(String data, String key) throws Exception {
if (data == null) {
return null;
}
byte[] buf = base64Utils.decode(data);
byte[] bt = decrypt(buf, key.getBytes());
return new String(bt);
}
private static byte[] encrypt(byte[] data, byte[] key) {
byte[] encryptData = null;
try {
SecureRandom sr = new SecureRandom(); // 生成一个可信任的随机数源
DESKeySpec dks = new DESKeySpec(key); // 从原始密钥数据创建DESKeySpec对象
// 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
SecretKey securekey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(DES); // Cipher对象实际完成加密操作
cipher.init(Cipher.ENCRYPT_MODE, securekey, sr); // 用密钥初始化Cipher对象
encryptData = cipher.doFinal(data);
} catch (InvalidKeyException | NoSuchAlgorithmException | InvalidKeySpecException
| NoSuchPaddingException | IllegalBlockSizeException | BadPaddingException e) {
}
return encryptData;
}
private static byte[] decrypt(byte[] data, byte[] key) {
SecureRandom sr = new SecureRandom(); // 生成一个可信任的随机数源
byte[] originData = null;
try {
DESKeySpec dks = new DESKeySpec(key); // 从原始密钥数据创建DESKeySpec对象
// 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
SecretKey securekey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance(DES); // Cipher对象实际完成解密操作
cipher.init(Cipher.DECRYPT_MODE, securekey, sr); // 用密钥初始化Cipher对象
originData = cipher.doFinal(data);
} catch (InvalidKeyException | NoSuchAlgorithmException | InvalidKeySpecException
| NoSuchPaddingException | IllegalBlockSizeException | BadPaddingException e) {
}
return originData;
}
}
import java.io.UnsupportedEncodingException;
public class base64Utils {
private static char[] base64EncodeChars = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };
private static byte[] base64DecodeChars = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 };
public static String encode(byte[] paramArrayOfByte)
{
StringBuffer localStringBuffer = new StringBuffer();
int i = paramArrayOfByte.length;
int j = 0;
while (j < i)
{
int k = paramArrayOfByte[(j++)] & 0xFF;
if (j == i)
{
localStringBuffer.append(base64EncodeChars[(k >>> 2)]);
localStringBuffer.append(base64EncodeChars[((k & 0x3) << 4)]);
localStringBuffer.append("==");
break;
}
int m = paramArrayOfByte[(j++)] & 0xFF;
if (j == i)
{
localStringBuffer.append(base64EncodeChars[(k >>> 2)]);
localStringBuffer.append(base64EncodeChars[((k & 0x3) << 4 | (m & 0xF0) >>> 4)]);
localStringBuffer.append(base64EncodeChars[((m & 0xF) << 2)]);
localStringBuffer.append("=");
break;
}
int n = paramArrayOfByte[(j++)] & 0xFF;
localStringBuffer.append(base64EncodeChars[(k >>> 2)]);
localStringBuffer.append(base64EncodeChars[((k & 0x3) << 4 | (m & 0xF0) >>> 4)]);
localStringBuffer.append(base64EncodeChars[((m & 0xF) << 2 | (n & 0xC0) >>> 6)]);
localStringBuffer.append(base64EncodeChars[(n & 0x3F)]);
}
return localStringBuffer.toString();
}
public static byte[] decode(String paramString) throws UnsupportedEncodingException {
StringBuffer localStringBuffer = new StringBuffer();
byte[] arrayOfByte = paramString.getBytes("US-ASCII");
int i = arrayOfByte.length;
int j = 0;
while (j < i)
{
int k;
do
{
k = base64DecodeChars[arrayOfByte[(j++)]];
} while ((j < i) && (k == -1));
if (k == -1) {
break;
}
int m;
do
{
m = base64DecodeChars[arrayOfByte[(j++)]];
} while ((j < i) && (m == -1));
if (m == -1) {
break;
}
localStringBuffer.append((char)(k << 2 | (m & 0x30) >>> 4));
int n;
do
{
n = arrayOfByte[(j++)];
if (n == 61) {
return localStringBuffer.toString().getBytes("ISO-8859-1");
}
n = base64DecodeChars[n];
} while ((j < i) && (n == -1));
if (n == -1) {
break;
}
localStringBuffer.append((char)((m & 0xF) << 4 | (n & 0x3C) >>> 2));
int i1;
do
{
i1 = arrayOfByte[(j++)];
if (i1 == 61) {
return localStringBuffer.toString().getBytes("ISO-8859-1");
}
i1 = base64DecodeChars[i1];
} while ((j < i) && (i1 == -1));
if (i1 == -1) {
break;
}
localStringBuffer.append((char)((n & 0x3) << 6 | i1));
}
return localStringBuffer.toString().getBytes("ISO-8859-1");
}
}
