Changing Mac OS user password programmatically using C++

Question

I'm trying to change local user password on MacOS Catalina using C++. Is there a way to do it?

Answer 1

UNTESTED: If you're running with permissions to do so, you can use

system("security set-keychain-password -o oldpassword -p newpassword /Users/username/Library/Keychains/login.keychain");