/**
* 调用rc4获得initKey
* <br> (非 Javadoc)
*/
public void BuildComplexKey()
{
// 考虑到非极端恶劣线程队列堵塞现象
//这个过程无需加锁.
//但如果一定要处理极端情况请按需对此过程进行加锁
this.complexKey = RC4.GetComplexKey(clientKey + serverKey);
this.inputCounter = 0;
this.outputCounter = 0;
this.refresh = false;
}
public static byte[] DecRC4(byte[] src)
{
int len = GetDecRC4Len(src);
if (len < 3)
{
return(null);
}
byte[] body = new byte[len];
//读取消息体
Buffer.BlockCopy(src, 4, body, 0, len);
//解密消息体
body = RC4.Convert(body, 4);
return(body);
}
public static int GetDecRC4Len(byte[] src)
{
CustomRC4Key key = CustomRC4Key.CreateCustomRC4Key();
byte[] blen = new byte[4];
blen[0] = src[0];
blen[1] = src[1];
blen[2] = src[2];
blen[3] = src[3];
blen = RC4.Convert(blen, 0);
//key.InputCounterIncrease(blen.Length);
byte[] rblen = new byte[4];
rblen[0] = blen[3];
rblen[1] = blen[2];
rblen[2] = blen[1];
rblen[3] = blen[0];
return(BitConverter.ToInt32(rblen, 0));
}
/**
* 调用rc4
* <br> (非 Javadoc)
* @param key
*/
public void BuildDefaultKey(String key)
{
this.complexKey = RC4.GetComplexKey(key);
this.refresh = false;
}
public static byte[] Convert(byte[] buff, int pos)
{
return(RC4.RC4Custom(buff, RC4.GetComplexKey(_key), pos));
}