QT:根据PHP码在C++中实现AES-256-CBC加解密

#include <QCryptographicHash>
#include <QAESEncryption>

// 加密
QString encrypt(QString plaintext, QString key, QString iv) {
    QByteArray keyBytes = QCryptographicHash::hash(key.toUtf8(), QCryptographicHash::Sha256);
    QByteArray ivBytes = QCryptographicHash::hash(iv.toUtf8(), QCryptographicHash::Md5);

    QAESEncryption encryption(QAESEncryption::AES_256, QAESEncryption::CBC);
    encryption.setKey(keyBytes);
    encryption.setIV(ivBytes);

    QByteArray encryptedBytes = encryption.encode(plaintext.toUtf8());
    QString encryptedText = QString::fromUtf8(encryptedBytes.toBase64());

    return encryptedText;
}

// 解密
QString decrypt(QString encryptedText, QString key, QString iv) {
    QByteArray keyBytes = QCryptographicHash::hash(key.toUtf8(), QCryptographicHash::Sha256);
    QByteArray ivBytes = QCryptographicHash::hash(iv.toUtf8(), QCryptographicHash::Md5);

    QAESEncryption encryption(QAESEncryption::AES_256, QAESEncryption::CBC);
    encryption.setKey(keyBytes);
    encryption.setIV(ivBytes);

    QByteArray encryptedBytes = QByteArray::fromBase64(encryptedText.toUtf8());
    QByteArray decryptedBytes = encryption.decode(encryptedBytes);
    QString decryptedText = QString::fromUtf8(decryptedBytes);

    return decryptedText;
}