QT 中实现HMAC-SHA1

实现函数：

QString hmacSha1(QByteArray key, QByteArray baseString){ int blockSize = 64; // HMAC-SHA-1 block size, defined in SHA-1 standard if (key.length() > blockSize) { // if key is longer than block size (64), reduce key length with SHA-1 compression key = QCryptographicHash::hash(key, QCryptographicHash::Sha1); }QByteArray innerPadding(blockSize, char(0x36)); // initialize inner padding with char "6" QByteArray outerPadding(blockSize, char(0x5c)); // initialize outer padding with char "quot; // ascii characters 0x36 ("6") and 0x5c ("quot;) are selected because they have large // Hamming distance (http://en.wikipedia.org/wiki/Hamming_distance)for (int i = 0; i < key.length(); i++) { innerPadding[i] = innerPadding[i] ^ key.at(i); // XOR operation between every byte in key and innerpadding, of key length outerPadding[i] = outerPadding[i] ^ key.at(i); // XOR operation between every byte in key and outerpadding, of key length }// result = hash ( outerPadding CONCAT hash ( innerPadding CONCAT baseString ) ).toBase64 QByteArray total = outerPadding; QByteArray part = innerPadding; part.append(baseString); total.append(QCryptographicHash::hash(part, QCryptographicHash::Sha1)); QByteArray hashed = QCryptographicHash::hash(total, QCryptographicHash::Sha1); return hashed.toBase64();}

转自：QTWIKI

也有人稍有不同的做法：

Qt 实现 HMAC_SHA1 哈希算法