Install openssl by entering the following commands in the terminal:
sudo apt update sudo apt install openssl
Description:
Secure Sockets Layer toolkit - cryptographic utility
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 the general-purpose command line binary /usr/bin/openssl, useful for cryptographic operations such as: * creating RSA, DH, and DSA key parameters; * creating X.509 certificates, CSRs, and CRLs; * calculating message digests; * encrypting and decrypting with ciphers; * testing SSL/TLS clients and servers; * handling S/MIME signed or encrypted mail.
Homepage: https://www.openssl.org/
Version: 1.1.0g-2ubuntu4
Section: utils