Install libssl-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libssl-doc
Description:
Secure Sockets Layer toolkit - development documentation
This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains manpages and demo files for libssl and libcrypto.
Homepage: https://www.openssl.org/
Version: 1.1.0g-2ubuntu4
Section: doc