java实现DES加密解密，javades加密解密,package cn.o

java实现DES加密解密，javades加密解密,package cn.o

package cn.outofmemory.snippets.core;import java.io.IOException;import java.io.Serializable;import java.security.InvalidKeyException;import java.security.NoSuchAlgorithmException;import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;import javax.crypto.KeyGenerator;import javax.crypto.NoSuchPaddingException;import javax.crypto.SealedObject;import javax.crypto.SecretKey;public class EncryptDecryptObjectWithDES {    private static Cipher ecipher;    private static Cipher dcipher;    private static SecretKey key;    public static void main(String[] args) {        try {            // generate secret key using DES algorithm            key = KeyGenerator.getInstance("DES").generateKey();            ecipher = Cipher.getInstance("DES");            dcipher = Cipher.getInstance("DES");            // initialize the ciphers with the given key            ecipher.init(Cipher.ENCRYPT_MODE, key);            dcipher.init(Cipher.DECRYPT_MODE, key);            // create a sealed object            SealedObject sealed = new SealedObject(new SecretObject("My secret message"), ecipher);            // get the algorithm with the object has been sealed            String algorithm = sealed.getAlgorithm();            System.out.println("Algorithm " + algorithm);            // unseal (decrypt) the object            SecretObject o = (SecretObject) sealed.getObject(dcipher);            System.out.println("Original Object: " + o);        }        catch (NoSuchAlgorithmException e) {            System.out.println("No Such Algorithm:" + e.getMessage());            return;        }        catch (NoSuchPaddingException e) {            System.out.println("No Such Padding:" + e.getMessage());            return;        }        catch (BadPaddingException e) {            System.out.println("Bad Padding:" + e.getMessage());            return;        }        catch (InvalidKeyException e) {            System.out.println("Invalid Key:" + e.getMessage());            return;        }        catch (IllegalBlockSizeException e) {            System.out.println("Illegal Block:" + e.getMessage());            return;        }        catch (ClassNotFoundException e) {            System.out.println("Class Not Found:" + e.getMessage());            return;        }        catch (IOException e) {            System.out.println("I/O Error:" + e.getMessage());            return;        }    }    public static class SecretObject implements Serializable {        private static final long serialVersionUID = -1335351770906357695L;        private final String message;        public SecretObject(String message) {            this.message = message;        }        @Override        public String toString() {            return "SecretObject [message=" + message + "]";        }    }}

输出：

Algorithm DESOriginal Object: SecretObject [message=My secret message]