This project is a static, extremely lightweight C++ library that offers basic base64 encoding and decoding. It supports in-place encoding and decoding as well as helper functions that allow easier use. Custom alphabets can be used. Helper functions and STL dependencies can be removed by defining BASE64_NO_GIMMICKS before including the library. The comments are doxygen-compatible.

These are the most important functions in the library:

• base64::encode() for encoding data into base64 format. There is an overloaded version that converts the data into an std::string.
• base64::decode() for decoding data. There is an overloaded version that converts the data into an std::vector<std::uint8_t>.
• base64::Configuration allows to create custom alphabets to pass to the algorithms.

This library is licensed under the GNU Affero General Public License, version 3 or newer. A copy can be found in the file LICENSE.

Make sure cmake is installed. Navigate into the base64 directory and execute:

cmake .

Now, makefiles (or project files) have been generated.

Some features are planned to be implemented in the future.

• OpenMP or some other parallelisation support.
• Optional linebreaks in encoded text.
• Optional checksums at the end of lines in encoded text.