X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fstorage.cpp;h=98ae96806807734f4b2481fcbd21ff79db0fa84e;hp=30d0ee27f821db51e1caa412f01ba000a72c3f1a;hb=c1cf157116de7fc3da96203aa6f03c38c7ebb650;hpb=9d54503555534a2c554f09a33df6afa33d6308ec

diff --git a/src/core/storage.cpp b/src/core/storage.cpp
index 30d0ee27..98ae9680 100644
--- a/src/core/storage.cpp
+++ b/src/core/storage.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-2014 by the Quassel Project                        *
+ *   Copyright (C) 2005-2018 by the Quassel Project                        *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -20,15 +20,85 @@
 
 #include "storage.h"
 
+#include <random>
+
 #include <QCryptographicHash>
 
-Storage::Storage(QObject *parent)
+Storage::Storage(QObject* parent)
     : QObject(parent)
+{}
+
+QString Storage::hashPassword(const QString& password)
 {
+    return hashPasswordSha2_512(password);
 }
 
+bool Storage::checkHashedPassword(const UserId user, const QString& password, const QString& hashedPassword, const Storage::HashVersion version)
+{
+    bool passwordCorrect = false;
+
+    switch (version) {
+    case Storage::HashVersion::Sha1:
+        passwordCorrect = checkHashedPasswordSha1(password, hashedPassword);
+        break;
+
+    case Storage::HashVersion::Sha2_512:
+        passwordCorrect = checkHashedPasswordSha2_512(password, hashedPassword);
+        break;
+
+    default:
+        qWarning() << "Password hash version" << QString(version) << "is not supported, please reset password";
+    }
 
-QString Storage::cryptedPassword(const QString &password)
+    if (passwordCorrect && version < Storage::HashVersion::Latest) {
+        updateUser(user, password);
+    }
+
+    return passwordCorrect;
+}
+
+QString Storage::hashPasswordSha1(const QString& password)
 {
     return QString(QCryptographicHash::hash(password.toUtf8(), QCryptographicHash::Sha1).toHex());
 }
+
+bool Storage::checkHashedPasswordSha1(const QString& password, const QString& hashedPassword)
+{
+    return hashPasswordSha1(password) == hashedPassword;
+}
+
+QString Storage::hashPasswordSha2_512(const QString& password)
+{
+    // Generate a salt of 512 bits (64 bytes) using the Mersenne Twister
+    std::random_device seed;
+    std::mt19937 generator(seed());
+    std::uniform_int_distribution<int> distribution(0, 255);
+    QByteArray saltBytes;
+    saltBytes.resize(64);
+    for (int i = 0; i < 64; i++) {
+        saltBytes[i] = (unsigned char)distribution(generator);
+    }
+    QString salt(saltBytes.toHex());
+
+    // Append the salt to the password, hash the result, and append the salt value
+    return sha2_512(password + salt) + ":" + salt;
+}
+
+bool Storage::checkHashedPasswordSha2_512(const QString& password, const QString& hashedPassword)
+{
+    QRegExp colonSplitter("\\:");
+    QStringList hashedPasswordAndSalt = hashedPassword.split(colonSplitter);
+
+    if (hashedPasswordAndSalt.size() == 2) {
+        return sha2_512(password + hashedPasswordAndSalt[1]) == hashedPasswordAndSalt[0];
+    }
+    else {
+        qWarning() << "Password hash and salt were not in the correct format";
+        return false;
+    }
+}
+
+QString Storage::sha2_512(const QString& input)
+{
+    return QString(QCryptographicHash::hash(input.toUtf8(), QCryptographicHash::Sha512).toHex());
+}