java版3des加密程序，可与php兼容
代码：import java.io.UnsupportedEncodingException;
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class DESCoder
{
private static BASE64Encoder base64 = new BASE64Encoder();
private static byte[] myIV = { 50, 51, 52, 53, 54, 55, 56, 57 };
//private static String strkey = "W9qPIzjaVGKUp7CKRk/qpCkg/SCMkQRu"; // 字节数必须是8的倍数
private static String strkey = "01234567890123456789012345678912";
public static String desEncrypt(String input) throws Exception
{
BASE64Decoder base64d = new BASE64Decoder();
DESedeKeySpec p8ksp = null;
p8ksp = new DESedeKeySpec(base64d.decodeBuffer(strkey));
Key key = null;
key = SecretKeyFactory.getInstance("DESede").generateSecret(p8ksp);
input = padding(input);
byte[] plainBytes = (byte[])null;
Cipher cipher = null;
byte[] cipherText = (byte[])null;
plainBytes = input.getBytes("UTF8");
cipher = Cipher.getInstance("DESede/CBC/NoPadding");
SecretKeySpec myKey = new SecretKeySpec(key.getEncoded(), "DESede");
IvParameterSpec ivspec = new IvParameterSpec(myIV);
cipher.init(1, myKey, ivspec);
cipherText = cipher.doFinal(plainBytes);
return removeBR(base64.encode(cipherText));
}
public static String desDecrypt(String cipherText) throws Exception
{
BASE64Decoder base64d = new BASE64Decoder();
DESedeKeySpec p8ksp = null;
p8ksp = new DESedeKeySpec(base64d.decodeBuffer(strkey));
Key key = null;
key = SecretKeyFactory.getInstance("DESede").generateSecret(p8ksp);
Cipher cipher = null;
byte[] inPut = base64d.decodeBuffer(cipherText);
cipher = Cipher.getInstance("DESede/CBC/NoPadding");
SecretKeySpec myKey = new SecretKeySpec(key.getEncoded(), "DESede");
IvParameterSpec ivspec = new IvParameterSpec(myIV);
cipher.init(2, myKey, ivspec);
byte[] output = removePadding(cipher.doFinal(inPut));
return new String(output, "UTF8");
}
private static String removeBR(String str) {
StringBuffer sf = new StringBuffer(str);
for (int i = 0; i < sf.length(); ++i)
{
if (sf.charAt(i) == '\n')
{
sf = sf.deleteCharAt(i);
}
}
for (int i = 0; i < sf.length(); ++i)
if (sf.charAt(i) == '\r')
{
sf = sf.deleteCharAt(i);
}
return sf.toString();
}
public static String padding(String str)
{
byte[] oldByteArray;
try
{
oldByteArray = str.getBytes("UTF8");
int numberToPad = 8 - oldByteArray.length % 8;
byte[] newByteArray = new byte;
System.arraycopy(oldByteArray, 0, newByteArray, 0, oldByteArray.length);
for (int i = oldByteArray.length; i < newByteArray.length; ++i)
{
newByteArray = 0;
}
return new String(newByteArray, "UTF8");
}
catch (UnsupportedEncodingException e)
{
System.out.println("Crypter.padding UnsupportedEncodingException");
}
return null;
}
public static byte[] removePadding(byte[] oldByteArray)
{
int numberPaded = 0;
for (int i = oldByteArray.length; i >= 0; --i)
{
if (oldByteArray[(i - 1)] != 0)
{
numberPaded = oldByteArray.length - i;
break;
}
}
byte[] newByteArray = new byte;
System.arraycopy(oldByteArray, 0, newByteArray, 0, newByteArray.length);
return newByteArray;
}
public static void main(String args[])
{
try {
String desstr = DESCoder.desEncrypt("1qaz2ws");
String pstr = DESCoder.desDecrypt(desstr);
System.out.println("plainText:1qaz2ws");
System.out.println("Encode:"+desstr);
System.out.println("Decode:"+pstr);
} catch (Exception e) {
e.printStackTrace();
}
}
}
运行结果：
plainText:1qaz2ws
Encode:0GsXgYA8BuM=
Decode:1qaz2ws
和PHP的一样，呵呵。转载地址http://hi.baidu.com/farmerluo/blog/item/2d613a87ed0a782dc65cc397.html
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