Install cl-plus-ssl by entering the following commands in the terminal:
sudo apt update sudo apt install cl-plus-ssl
Description:
Common Lisp interface to OpenSSL
CL+SSL is portable code based on CFFI and gray streams. It defines its own libssl BIO method, so that SSL I/O can be written over portable Lisp streams instead of bypassing the streams and sending data over Unix file descriptors directly. (But the traditional approach is still used if possible.)
Homepage: http://common-lisp.net/project/cl-plus-ssl/
Version: 20170630-1build1
Section: universe/lisp