Sample C++ code with encryption and decryption using the Openssl libraries. A couple of short snippets to generate hashes (md5 and sha256) are also included.

Encrypts the supplied C++ string and returns (via output arguments) a base64 encoded and encrypted message, a base64 encoded and encrypted key and a base64 encoded Initialization Vector (IV).

Decrypts the supplied base64 encoded and encrypted message, base64 encoded and encrypted key and base64 encoded key and returns (via an output argument) the decrypted string.

Returns (via output argument) a hex-version of the md5 hash generated for the input string.

Returns (via output argument) a hex-version of the sha256 hash generated for the input string.