initial import of 'tito' library

git-svn-id: svn://ttmath.org/publicrep/tito/src@361 e52654a7-88a9-db11-a3e9-0013d4bc506e
2012-01-08 04:08:02 +00:00
commit 929d5c3bca
11 changed files with 2509 additions and 0 deletions
--- a/base64.h
+++ b/base64.h
@@ -0,0 +1,90 @@
+/*
+ * This file is a part of Tito - a cryptography library
+ * and is distributed under the (new) BSD licence.
+ * Author: Tomasz Sowa <t.sowa@ttmath.org>
+ */
+
+/* 
+ * Copyright (c) 2012, Tomasz Sowa
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *    
+ *  * 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.
+ *    
+ *  * Neither the name Tomasz Sowa nor the names of contributors to this
+ *    project may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ */
+
+#ifndef headerfile_tito_base64
+#define headerfile_tito_base64
+
+#include <string>
+
+
+namespace Tito
+{
+
+
+class Base64
+{
+public:
+
+	Base64();
+
+	// default '=';
+	void SetPadding(char c);
+
+	void Encode(const char * in, size_t len,	std::string & out);
+	void Encode(const char * in,				std::string & out);
+	void Encode(const std::string & in,			std::string & out);
+
+	bool Decode(const char * in, size_t len,	std::string & out);
+	bool Decode(const char * in,				std::string & out);
+	bool Decode(const std::string & in,			std::string & out);
+
+
+
+private:
+
+	static const char * tabbase64;
+	size_t tabbase64_len;
+	char padding;
+	unsigned int not_existing;
+
+	void Convert3to4Pieces(const char * s, size_t len, unsigned int * tab4);
+	void ConvertFrom4to3Pieces(const unsigned int * tab4, unsigned int * tab3);
+	bool CharFromBase64(unsigned int from, unsigned int & to);
+	bool Make4pieces(const char * s, unsigned int * tab4);
+	void Save4PiecesToString(std::string & s, const unsigned int * tab4);
+	void Save3PiecesToString(std::string & s, const unsigned int * tab3);
+
+};
+
+
+
+} // namespace Tito
+
+
+
+#endif
+