Generate a hash of a string, file, whatever. Salting your hash Combine your salt with what is being hashed (e.g. typically you do this with a password).  SHA256 and other hash generation algorithms don't take salt but if you add the salt to the end of what is being hashed you will get a different result, hence […]

Installing the library sudo apt-get install libssl-dev   Add the linker option for the library -lcrypto Documentation https://www.openssl.org/docs/manmaster/man3/ The documentation isn't always great and their search doesn't always work, but on the Libraries page search for the function name you want into on and it will be there