This software is a C++ class library with a range of cryptographic schemes. It provides a secure make-up and assists in code implementation with well-defined classes.
It's worth noting that the licensing for Crypto++ is somewhat unusual amongst open source projects. There is a distinction between the library as a compilation (i.e., collection), which is copyrighted by Wei Dai, and the individual files within it. The majority of these individual files are within the public domain, with the exception of mars.cpp, which is subject to its own specific license. This should be taken into consideration when using the software.
Overall, Crypto++ has proven to be a reliable and efficient solution for those needing a powerful set of encryption tools. Its open-source nature makes it a popular choice among developers, and the extensive range of functions helps ensure that it works for a variety of use-cases.