#include <QCryptographicHash>
#include <QSettings>
#include <QDebug>
// generate MD5-Hash
QString test_string(“a test string for MD5 hash”);
QByteArray md5_hash;
md5_hash = QCryptographicHash::hash(test_string.toUtf8(), QCryptographicHash::Md5);
QString md5hash_string = md5_hash.toHex();
qDebug() << “MD5-Hash:” << md5hash_string;
// write to md5_hash.ini
QSettings md5writeFile(QString(“md5_hash.ini”), QSettings::IniFormat);
md5writeFile.setValue(QLatin1String(“MD5-Hash”), md5_hash);
md5writeFile.sync();
// read from md5_hash.ini
QSettings md5readFile(QString(“md5_hash.ini”), QSettings::IniFormat);
md5readFile.sync();
if (true == md5readFile.contains(“MD5-Hash”)){
QByteArray md5_array = md5readFile.value(“MD5-Hash”).toByteArray();
qDebug() << “MD5-Hash read from file:” << md5_array.toHex();
}以上代码纯手敲并且Qt上验证通过的,请珍惜使用。