- import java.io.*;
- import java.security.*;
- import javax.crypto.*;
- import sun.misc.BASE64Encoder;
- public class DES {
- public static byte[] aa;
- public static void main(String[] args) throws Exception {
- if (args.length < 3) {
- System.out.println("Usage: java PwdDES -e|-d passwd input");
- return;
- }
- Key key;
- KeyGenerator generator = KeyGenerator.getInstance("DES");
- generator.init(new SecureRandom(args[1].getBytes()));
- key = generator.generateKey();
- Cipher cipher = Cipher.getInstance("DES");
- if (args[0].indexOf("e") != -1)
- cipher.init(Cipher.ENCRYPT_MODE, key);
- else
- cipher.init(Cipher.DECRYPT_MODE, key);
- System.out.println(new String(args[2].getBytes()));
- System.out.println(crypt(args[2].getBytes(),cipher));
- cipher.init(Cipher.DECRYPT_MODE, key);
- System.out.println(crypt(aa,cipher));
- }
- private static String crypt(byte[] bt,Cipher cipher)throws IOException,GeneralSecurityException{
- BASE64Encoder be = new BASE64Encoder();
- byte[] outBytes = new byte[1024];
- int inLength = 0;
- inLength = bt.length;
- if(inLength > 0)
- outBytes = cipher.doFinal(bt,0,inLength);
- else
- outBytes = cipher.doFinal();
- aa = outBytes;
- return new String(outBytes);
- }
- }
【数据加密】用DES加密字符串
最新推荐文章于 2024-03-25 20:00:40 发布