Fz8sRccJ

1int blockSize = 64;
2
3   QByteArray innerPadding(blockSize, char(0x36));
4   QByteArray outerPadding(blockSize, char(0x5c));
5
6   unsigned char msg[blockSize];
7   const char* result;
8
9   //If the key is longer, hash to make it blockSize
10   if (secretKey.length() > blockSize) {
11      sha256(reinterpret_cast<unsigned char*>(secretKey.data()), secretKey.length(), msg);     result = reinterpret_cast<const char*>(msg);
12      secretKey = QByteArray::fromRawData(result, strlen(result));
13   }
14
15   //If the key is shorter, fill with 0x00 until blockSize
16   if (secretKey.length() < blockSize) {
17      int amount = blockSize - secretKey.length();
18      secretKey += QByteArray(amount, char(0x00));
19   }
20
21   for (int i = 0; i < secretKey.length(); i++) {
22       innerPadding[i] = innerPadding[i] ^ secretKey.at(i);
23       outerPadding[i] = outerPadding[i] ^ secretKey.at(i);
24   }
25
26   QByteArray total = outerPadding;
27   QByteArray part = innerPadding;
28
29   part.append(stringToSign);
30   sha256(reinterpret_cast<const unsigned char*>(part.data()), part.length(),  msg);
31
32   result = reinterpret_cast<const char*>(msg);
33   total.append(QByteArray::fromRawData(result, strlen(result)));
34
35   sha256(reinterpret_cast<const unsigned char*>(total.data()), total.length(), msg);
36   result = reinterpret_cast<const char*>(msg);
37
38   QByteArray hashed = QByteArray::fromRawData(result, strlen(result));
39   return hashed.toBase64();