Using the pbewithmd5anddes algorithm to encrypt and decrypt the data of __ algorithm

Package com.alex.security;
Import Java.io.ByteArrayOutputStream;
Import Java.io.FileInputStream;
Import Java.io.FileOutputStream;
Import Java.io.ObjectInputStream;
Import Java.io.ObjectOutputStream;

Import Java.security.spec.KeySpec;
Import Javax.crypto.Cipher;
Import Javax.crypto.SecretKey;
Import Javax.crypto.SecretKeyFactory;
Import Javax.crypto.spec.PBEKeySpec;

Import Javax.crypto.spec.PBEParameterSpec; public class Pbesecretkeytest {public static void main (string[] args) throws exception{//define data String that needs to be encrypted
		= "Alex Zhuang";
		SYSTEM.OUT.PRINTLN ("The data before the encryption is:" +data);
		The data is encrypted secretencrypt.

	Decrypt the data secretdecrypt ("D:/pbencrypted.data", "D:/pbsecret.key"); public static void Secretencrypt (String data) throws exception{//using pbewithmd5anddes algorithm to get Cipher instance Cipher Cipher
		= Cipher.getinstance ("Pbewithmd5anddes");
		Initialize key secretkeyfactory keyfactory = Secretkeyfactory.getinstance ("Pbewithmd5anddes"); Keyspec Keyspec = new Pbekeyspec ("password").ToCharArray ());
		Secretkey Secretkey = Keyfactory.generatesecret (Keyspec);		
		Initialize cipher to Pbeparameterspec parameterspec = new Pbeparameterspec (new byte[]{1,2,3,4,5,6,7,8},1000);
		
		Cipher.init (Cipher.encrypt_mode, Secretkey,parameterspec);
		
		Encrypt data byte[] EncryptedData = cipher.dofinal (Data.getbytes ());
		
		The output of the encrypted content System.out.println ("Encrypted data is:" +new String (EncryptedData));
		The key is persisted and serialized fileoutputstream Keyfos = new FileOutputStream ("D:/pbsecret.key");
		ObjectOutputStream Keyoos = new ObjectOutputStream (Keyfos);
		Keyoos.writeobject (Secretkey);
		Keyoos.close ();
			
			
		Keyfos.close ();
		The encrypted data is persisted fileoutputstream Encrypteddatafos = new FileOutputStream ("D:/pbencrypted.data");
		Encrypteddatafos.write (EncryptedData);
	Encrypteddatafos.close (); public static void Secretdecrypt (String datapath,string keypath) throws exception{//Get key and encrypted data through IO stream fileinputstr
		EAM Keyfis = new FileInputStream (keypath); ObjectInputStream Keyois = new ObjectiNputstream (Keyfis);
		Using Pbewithmd5anddes algorithm to obtain Cipher instance Cipher Cipher = Cipher.getinstance ("Pbewithmd5anddes");
		Initialize key Secretkey Secretkey = (secretkey) keyois.readobject ();
		
		Keyois.close ();
		Initialize cipher to decrypt pbeparameterspec parameterspec = new Pbeparameterspec (new byte[]{1,2,3,4,5,6,7,8},1000);
		
		Cipher.init (Cipher.decrypt_mode, Secretkey,parameterspec);
		Obtain the encrypted data fileinputstream Encrypteddatafis = new FileInputStream (datapath);
		Bytearrayoutputstream BOS = new Bytearrayoutputstream ();
		
		CopyStream (Encrypteddatafis,bos);
		
		Obtain the decrypted data byte[] Decrypteddata = cipher.dofinal (Bos.tobytearray ());
		Bos.close ();
		
		Encrypteddatafis.close ();
		
	SYSTEM.OUT.PRINTLN ("Decrypted data is:" +new String (Decrypteddata)); public static void CopyStream (FileInputStream fis, Bytearrayoutputstream Bos) throws exception{byte[] buf = new by
		TE[1024];
		int len =-1;
		while ((Len=fis.read (BUF))!=-1) {bos.write (Buf,0,len);
 }
	}

}

Run Result:

The data before encryption is: Alex Zhuang
The encrypted data is:.? -H
The decrypted data is: Alex Zhuang