[提问]HMAC-SHA1 这段加密完为什么和其他语言的不一样呢？ [复制链接]

http://developer.qt.nokia.com/wiki/HMAC-SHA1 诺基亚官网上给出的一段代码，但是我尝试了一下好像加密完的字符串和其他语言不一样，高手能帮我看下是哪里出错了么？谢谢

/**
* Hashes the given string using the HMAC-SHA1 algorithm.
*
* \param key The string to be hashed
* \param secret The string that contains secret word
* \return The hashed string
*/
static QString hmac_sha1(const QString &key,
                       const QString &secret)
{
   //Length of the text, that will be hashed
   int   text_lenght;
    
   //For secret word.
   QByteArray K;
   //Lenght of secret word
   int   K_lenght;
    
   K_lenght = secret.size();
   text_lenght = key.size();
    
   //Need to do for XOR operation. Transforms QString to
   //unsigned char
    
    
   K = secret.toAscii();
    
   //Inner padding
   QByteArray ipad;
   //Outer pad
   QByteArray opad;
    
   //if secret key > 64 bytes use this to obtain sha1 key
   if(K_lenght > 64)
   {
      QByteArray tempSecret;
      
      tempSecret.append(secret);
      
      K = QCryptographicHash::hash(tempSecret,
                                  QCryptographicHash::Sha1);
      
      K_lenght = 20;
   }
    
   //Fills ipad and opad with zeros
   //bzero( ipad, sizeof ipad);
   //bzero( opad, sizeof opad);
    
   ipad.fill( 0, 64);
   opad.fill(0, 64);
    
   //Copies Secret to ipad and opad
   //bcopy( K, ipad, K_lenght);
   //bcopy( K, opad, K_lenght);
    
   ipad.replace(0, K_lenght, K);
   opad.replace(0, K_lenght, K);
    
    
    
   //XOR operation for inner and outer pad
   for (int i=0; i<64; i++)
   {
      ipad = ipad ^ 0x36;
      opad = opad ^ 0x5c;
   }
    
   //Stores hashed content
   QByteArray context;
    
   //Appends XOR:ed ipad to context
   context.append(ipad,64);
   //Appends key to context
   context.append(key);
    
   //Hashes Inner pad
   QByteArray Sha1   = QCryptographicHash::hash(context,
                                                QCryptographicHash::Sha1);
    
   context.clear();
   //Appends opad to context
   context.append(opad,64);
   //Appends hashed inner pad to context
   context.append(Sha1);
    
   Sha1.clear();
    
   // Hashes outerpad
   Sha1 = QCryptographicHash::hash(context,
                                   QCryptographicHash::Sha1);
    
   // String to return hashed stuff in Base64 format
   QByteArray str(Sha1.toBase64());
    
   return str;
}