LatitudeUpdater 0.1, fix the previous commit

[googlelatitude] / libkqoauth / kqoauthutils.cpp

diff --git a/libkqoauth/kqoauthutils.cpp b/libkqoauth/kqoauthutils.cpp
new file mode 100644 (file)
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+++ b/libkqoauth/kqoauthutils.cpp
@@ -0,0 +1,79 @@
+/**
+ * KQOAuth - An OAuth authentication library for Qt.
+ *
+ * Author: Johan Paul (johan.paul@d-pointer.com)
+ *         http://www.d-pointer.com
+ *
+ *  KQOAuth is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KQOAuth is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with KQOAuth.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <QString>
+#include <QCryptographicHash>
+#include <QByteArray>
+
+#include <QtDebug>
+#include "kqoauthutils.h"
+
+QString KQOAuthUtils::hmac_sha1(const QString &message, const QString &key)
+{
+    QByteArray keyBytes = key.toAscii();
+    int keyLength;              // Lenght of key word
+    const int blockSize = 64;   // Both MD5 and SHA-1 have a block size of 64.
+
+    keyLength = keyBytes.size();
+    // If key is longer than block size, we need to hash the key
+    if (keyLength > blockSize) {
+        QCryptographicHash hash(QCryptographicHash::Sha1);
+        hash.addData(keyBytes);
+        keyBytes = hash.result();
+    }
+
+    /* http://tools.ietf.org/html/rfc2104  - (1) */
+    // Create the opad and ipad for the hash function.
+    QByteArray ipad;
+    QByteArray opad;
+
+    ipad.fill( 0, blockSize);
+    opad.fill( 0, blockSize);
+
+    ipad.replace(0, keyBytes.length(), keyBytes);
+    opad.replace(0, keyBytes.length(), keyBytes);
+
+    /* http://tools.ietf.org/html/rfc2104 - (2) & (5) */
+    for (int i=0; i<64; i++) {
+        ipad[i] = ipad[i] ^ 0x36;
+        opad[i] = opad[i] ^ 0x5c;
+    }
+
+    QByteArray workArray;
+    workArray.clear();
+
+    workArray.append(ipad, 64);
+    /* http://tools.ietf.org/html/rfc2104 - (3) */
+    workArray.append(message.toAscii());
+
+
+    /* http://tools.ietf.org/html/rfc2104 - (4) */
+    QByteArray sha1 = QCryptographicHash::hash(workArray, QCryptographicHash::Sha1);
+
+    /* http://tools.ietf.org/html/rfc2104 - (6) */
+    workArray.clear();
+    workArray.append(opad, 64);
+    workArray.append(sha1);
+
+    sha1.clear();
+
+    /* http://tools.ietf.org/html/rfc2104 - (7) */
+    sha1 = QCryptographicHash::hash(workArray, QCryptographicHash::Sha1);
+    return QString(sha1.toBase64());
+}