--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/securitysettings/cpwlansecurityuiplugins/cpwpaui/src/wpakeyvalidator.cpp	Fri May 14 15:54:13 2010 +0300
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of the License "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description: 
+ *   Validate WPA/WPA2 & WPA2 only keys
+ *
+ */
+
+/*
+ * %version: 1 %
+ */
+
+#include <QString>
+#include "wpakeyvalidator.h"
+
+/*!
+    \class WpaKeyValidator wpakeyvalidator.cpp
+    \brief Utilities for WPA/WPA2 key validations.
+    
+*/
+/*!
+    \enum WpaKeyValidator::KeyStatus
+    This enum defines the validation results.
+
+    \var WpaKeyValidator::KeyStatusOk
+    Key is valid.
+    
+    \var WpaKeyValidator::KeyStatusIllegalCharacters
+    Key contains illegal characters.
+    
+    \var WpaKeyValidator::KeyStatusWpaTooShort
+    WPA key is too short. Minimum allowed length is 8. See 
+    WlanWizardUtils::validateWpaKey().
+    
+    \var WpaKeyValidator::KeyStatusWpaTooLong
+    WPA key is too long. Minimum allowed length is 64 for hex key and 63 for 
+    ascii key. See WlanWizardUtils::validateWpaKey().
+      
+*/
+
+/*! 
+ * Process WPA key validation. A passphrase can contain from 8 to 63 ASCII
+ * characters where each character MUST have a decimal encoding in the range of
+ * 32 to 126, inclusive.
+ *
+ * A preshared key is stored as 64 character hex string.
+ * 
+ * @param key PSK to be validated
+ * 
+ * @return Following values are possible
+ * - KeyStatusOk
+ * - KeyStatusIllegalCharacters
+ * - KeyStatusWpaTooShort
+ * - KeyStatusWpaTooLong
+ */
+WpaKeyValidator::KeyStatus WpaKeyValidator::validateWpaKey(const QString &key)
+{
+    int length = key.length();
+    KeyStatus ret = KeyStatusOk;
+
+    if (length < WpaMinLenght) {
+        ret = KeyStatusWpaTooShort;
+    }
+    else if (length > WpaMaxLenght) {
+        ret = KeyStatusWpaTooLong;
+    }
+    // hex string
+    else if (length == WpaMaxLenght) {
+        ret = isHex(key);
+    }
+    else {
+        ret = isAscii(key);
+    }
+
+    return ret;
+}
+
+
+/*!
+ * Process Ascii validation. Allowed characters are from 32 to 126.
+ * 
+ * @param key to be validated.
+ * 
+ * @return Following values are possible
+ * - KeyStatusOk
+ * - KeyStatusIllegalCharacters
+ */
+WpaKeyValidator::KeyStatus WpaKeyValidator::isAscii(const QString &key)
+{
+    QChar ch32(32);
+    QChar ch126(126);
+
+    const QChar *data = key.data();
+    while (!data->isNull()) {
+        if ((*data) < ch32 || (*data) > ch126) {
+            return KeyStatusIllegalCharacters;
+        }
+        ++data;
+    }
+    return KeyStatusOk;
+}
+
+/*!
+ * Process Hex validation. Allowed characters are
+ * - from 0 to 9
+ * - from a to f
+ * - from A to F
+ * 
+ * @param key to be validated.
+ * 
+ * @return Following values are possible
+ * - KeyStatusOk
+ * - KeyStatusIllegalCharacters
+ */
+WpaKeyValidator::KeyStatus WpaKeyValidator::isHex(const QString &key)
+{
+    QChar ch_A(65); // Character: A
+    QChar ch_F(70); // Character: F
+    QChar ch_a(97); // Character: a
+    QChar ch_f(102);// Character: f
+
+    const QChar *data = key.data();
+    while (!data->isNull()) {
+        if (data->isDigit() ||
+            (*data) >= ch_a && (*data) <= ch_f ||
+            (*data) >= ch_A && (*data) <= ch_F) {
+            ++data;
+        }
+        else {
+            return KeyStatusIllegalCharacters;
+        }
+    }
+    return KeyStatusOk;
+}