...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Use a private key from a file.
boost::system::error_code use_private_key_file( const std::string & filename, file_format format, boost::system::error_code & ec);
This function is used to load a private key into the context from a file.
The name of the file containing the private key.
The file format (ASN.1 or PEM).
Set to indicate what error occurred, if any.