请大家帮我翻译如下一段加密程序(主要是pb如何处理字节的问题)
这是java写的加密程序,请各位大侠帮我翻译成用pb写的代码。
public static String encrypt(String key, String pwd)
{
if(pwd == null || pwd.equals(""))
return pwd;
String cPwd = "";
byte pwdb[] = pwd.getBytes();
byte keyb[] = key.getBytes();
int keyIndex = 0;
for(int i = 0; i < pwdb.length; i++)
{
if(keyIndex == keyb.length)
keyIndex = 0;
pwdb[i] = (byte)(pwdb[i] ^ keyb[keyIndex]);
keyIndex++;
}
for(int i = 0; i < pwdb.length; i++)
cPwd = cPwd + ":" + Byte.toString(pwdb[i]);
if(cPwd.length() > 0)
cPwd = cPwd.substring(1);
return cPwd;
}