Qt 中实现 hmac Sha1 加密并以 base64编码输出
2017-06-22 11:00
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#include <QCryptographicHash> 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"/" // ascii characters 0x36 ("6") and 0x5c ("/") 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(); }
与在线测试网站生成结果相同
在线测试加密方法
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