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2 * Copyright (C) 2005-2020 by the Quassel Project *
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5 * This program is free software; you can redistribute it and/or modify *
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8 * (at your option) version 3. *
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
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17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
25 #include <QCryptographicHash>
27 Storage::Storage(QObject* parent)
31 QString Storage::hashPassword(const QString& password)
33 return hashPasswordSha2_512(password);
36 bool Storage::checkHashedPassword(const UserId user, const QString& password, const QString& hashedPassword, const Storage::HashVersion version)
38 bool passwordCorrect = false;
41 case Storage::HashVersion::Sha1:
42 passwordCorrect = checkHashedPasswordSha1(password, hashedPassword);
45 case Storage::HashVersion::Sha2_512:
46 passwordCorrect = checkHashedPasswordSha2_512(password, hashedPassword);
50 qWarning() << "Password hash version" << QString(version) << "is not supported, please reset password";
53 if (passwordCorrect && version < Storage::HashVersion::Latest) {
54 updateUser(user, password);
57 return passwordCorrect;
60 QString Storage::hashPasswordSha1(const QString& password)
62 return QString(QCryptographicHash::hash(password.toUtf8(), QCryptographicHash::Sha1).toHex());
65 bool Storage::checkHashedPasswordSha1(const QString& password, const QString& hashedPassword)
67 return hashPasswordSha1(password) == hashedPassword;
70 QString Storage::hashPasswordSha2_512(const QString& password)
72 // Generate a salt of 512 bits (64 bytes) using the Mersenne Twister
73 std::random_device seed;
74 std::mt19937 generator(seed());
75 std::uniform_int_distribution<int> distribution(0, 255);
78 for (int i = 0; i < 64; i++) {
79 saltBytes[i] = (unsigned char)distribution(generator);
81 QString salt(saltBytes.toHex());
83 // Append the salt to the password, hash the result, and append the salt value
84 return sha2_512(password + salt) + ":" + salt;
87 bool Storage::checkHashedPasswordSha2_512(const QString& password, const QString& hashedPassword)
89 QRegExp colonSplitter("\\:");
90 QStringList hashedPasswordAndSalt = hashedPassword.split(colonSplitter);
92 if (hashedPasswordAndSalt.size() == 2) {
93 return sha2_512(password + hashedPasswordAndSalt[1]) == hashedPasswordAndSalt[0];
96 qWarning() << "Password hash and salt were not in the correct format";
101 QString Storage::sha2_512(const QString& input)
103 return QString(QCryptographicHash::hash(input.toUtf8(), QCryptographicHash::Sha512).toHex());