java处理url加解密

1.加密

MessageDigest md = MessageDigest.getInstance("MD5");
byte[] byteKeyMd5 = md.digest(encryptKey.getBytes());

byte[] byteKey = new byte[24];
System.arraycopy(byteKeyMd5, 0, byteKey, 0, 16); 
System.arraycopy(byteKeyMd5, 0, byteKey, 16, 8); 

Key deskey = null;
DESedeKeySpec spec = new DESedeKeySpec(byteKey);
SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
deskey = keyfactory.generateSecret(spec);
Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, deskey);
byte[] encryptedBytes = cipher.doFinal(source.getBytes("UTF-8"));

BASE64Encoder encoder = new BASE64Encoder();
encryptedString = encoder.encode(encryptedBytes);

2.解密

byte[] decodedBytes;
BASE64Decoder decoder = new BASE64Decoder();
decodedBytes = decoder.decodeBuffer(cipherText);
			
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] byteKeyMd5 = md.digest(decryptKey.getBytes());
			
byte[] byteKey = new byte[24];
System.arraycopy(byteKeyMd5, 0, byteKey, 0, 16); 
System.arraycopy(byteKeyMd5, 0, byteKey, 16, 8); 

Key deskey = null;
DESedeKeySpec spec = new DESedeKeySpec(byteKey);
SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
deskey = keyfactory.generateSecret(spec);
Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, deskey);
			
byte[] plainTextBytes = cipher.doFinal(decodedBytes);
plainText = new String(plainTextBytes);