Install botan by entering the following commands in the terminal:
sudo apt update sudo apt install botan
multiplatform crypto library (2.x version)
Botan is a C++ library which provides support for many common cryptographic operations, including encryption, authentication, and X.509v3 certificates and CRLs. A wide variety of algorithms is supported, including RSA, DSA, DES, AES, MD5, and SHA-1. . This package contains the 2.x version of Botan.