--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/QTfrontend/rndstr.cpp	Sun Nov 13 22:13:58 2005 +0000
@@ -0,0 +1,67 @@
+/*
+ * Hedgewars, a worms-like game
+ * Copyright (c) 2005 Andrey Korotaev <unC0Rr@gmail.com>
+ *
+ * Distributed under the terms of the BSD-modified licence:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * with the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <QDateTime>
+#include "rndstr.h"
+
+const char * letters = "qwertyuiopasdfghjklzxcvbnm" \
+                       "QWERTYUIOPASDFGHJKLZXCVBNM" \
+                       "0123456789";
+const quint8 letterscnt = 62;
+
+const char * upd = "/hw!/";
+const quint8 updcnt = 5;
+
+RNDStr::RNDStr()
+{
+	SHA1Init(&ctx);
+	QDateTime now = QDateTime::currentDateTime();
+	QDateTime zero;
+	int secs = now.secsTo(zero);
+	SHA1Update(&ctx, (quint8 *)&secs, sizeof(int));
+}
+	
+void RNDStr::GenRNDStr(QString & str, quint32 len)
+{
+	str = "";
+	sha1_ctxt tmpctx;
+	caddr_t digest;
+	for(quint32 i = 0; i < len; i++)
+	{
+		SHA1Update(&ctx, (quint8 *)upd, updcnt);
+		qMemCopy(&tmpctx, &ctx, sizeof(sha1_ctxt));
+		SHA1Final(digest, &tmpctx);
+		int index = (digest[3] + digest[11] + digest[17]) % letterscnt;
+		str += letters[index];
+	}
+}