对中文串进行64位加密、解密！

[m_leaner]

最好有java代码

[zyg158]

用Des算法

[zyg158]

import java.security.*;
import javax.crypto.*;
import java.nio.*;
import javax.crypto.spec.SecretKeySpec;

public class encrypt {

private static final String Algorithm = "DESede"; //定义 加密算法,可用

// DES,DESede,Blowfish
//keybyte为加密密钥，长度为24字节
//src为被加密的数据缓冲区（源）
public static byte[] encryptMode(byte[] keybyte, byte[] src) {
try {
//生成密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
//加密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.ENCRYPT_MODE, deskey);
return c1.doFinal(src);
} catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}

public static byte[] encryptMode(byte[] keybyte, String strIn) {
int iLen = 8 - strIn.length() % 8;
if (iLen != 8) {
ByteBuffer buffer = ByteBuffer.allocate(strIn.length() + iLen);
buffer.put(strIn.getBytes());
strIn = new String(buffer.array());
buffer.clear();
//return encryptMode(keybyte, buffer.array());
}
return encryptMode(keybyte, strIn.getBytes());
}

//keybyte为加密密钥，长度为24字节
//src为加密后的缓冲区
public static byte[] decryptMode(byte[] keybyte, byte[] src) {
try {
//生成密钥
SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
//解密
Cipher c1 = Cipher.getInstance(Algorithm);
c1.init(Cipher.DECRYPT_MODE, deskey);
return c1.doFinal(src);
} catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace();
} catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace();
} catch (java.lang.Exception e3) {
e3.printStackTrace();
}
return null;
}

/*
* //转换成十六进制字符串 public static String byte2hex(byte[] b) {
* String hs="";
* String stmp="";
* for (int n=0;n <b.length;n++) { stmp=(java.lang.Integer.toHexString(b[n] &
* 0XFF)); if (stmp.length()==1) hs=hs+"0"+stmp; else hs=hs+stmp; if (n
* <b.length-1) hs=hs+":"; } return hs.toUpperCase(); }
*/

public static void main(String[] args) {
//添加新安全算法,如果用JCE就要把它添加进去
Security.addProvider(new com.sun.crypto.provider.SunJCE());
final byte[] keyBytes = { (byte) 138, (byte) 98, (byte) 100,
(byte) 121, (byte) 161, (byte) 22, (byte) 2, (byte) 145,
(byte) 199, (byte) 234, (byte) 185, (byte) 188, (byte) 41,
(byte) 182, (byte) 56, (byte) 199, (byte) 81, (byte) 145,
(byte) 52, (byte) 213, (byte) 213, (byte) 118, (byte) 118,
(byte) 138 }; //24字节的密钥
String szSrc = "12345678asdfg123";
System.out.println("加密前的字符串:" + szSrc);
byte[] encoded = encryptMode(keyBytes, szSrc);
System.out.println("加密后的字符串:" + new String(encoded));
System.out.println("len=" + encoded.length);
//byte[] test = {36, -22, 105, 100, -109, -16, 66, -117};
//,11, -48, 67, 8 ,-72, 121 ,-45 ,-58
System.out.println("byte =" + encoded[0] + " " + encoded[1] + " "
+ encoded[2] + " " + encoded[3] + " " + encoded[4] + " "
+ encoded[5] + " " + encoded[6] + " " + encoded[7]);
System.out.println("byte =" + encoded[8] + " " + encoded[9] + " "
+ encoded[10] + " " + encoded[11] + " " + encoded[12] + " "
+ encoded[13] + " " + encoded[14] + " " + encoded[15]);
System.out.println("byte =" + encoded[8] + " " + encoded[16] + " "
+ encoded[17] + " " + encoded[18] + " " + encoded[19] + " "
+ encoded[20] + " " + encoded[21] + " " + encoded[22]);
byte[] srcBytes = decryptMode(keyBytes, encoded);
System.out.println("解密后的字符串:" + (new String(srcBytes)));
}
}

[m_leaner]

中文好用吗？sun.misc.BASE64Decoder.java和BASE64Encoder.java能用吗？

[bboonnee]

可以用，中文只是看编码格式得问题
可以用UTF-8

[m_leaner]

如何写？

[m_leaner]

to zyg158((DD)One-Time Password System)
代码有问题

[zyg158]

这个是给你提供参考的,呵呵

[zyg158]

我自己写的那个找不到了,只有给你这个java里面自带的了

[Goal3]

学习