$ apt search libcrypto WARNING: apt does not have a stable CLI interface. Use with caution in scripts. Sorting... Full Text Search... libcrypto++-dev/bionic,now 5.6.4-8 amd64 [installed] General purpose cryptographic library - C++ development libcrypto++-doc/bionic,bionic,now 5.6.4-8 all [installed] General purpose cryptographic library - documentation libcrypto++-utils/bionic,now 5.6.4-8 amd64 [installed] General purpose cryptographic library - utilities and data files libcrypto++6/bionic,now 5.6.4-8 amd64 [installed] General purpose cryptographic library - shared library libcrypto++6-dbg/bionic,now 5.6.4-8 amd64 [installed] General purpose cryptographic library - debug symbols libcrypto-equality-clojure/bionic,bionic 1.0.0-1 all Clojure library protecting against timing attacks libcrypto-random-clojure/bionic,bionic 1.2.0-1 all secure random generator for Clojure libcryptokit-ocaml/bionic 1.11-1build1 amd64 cryptographic algorithm library for OCaml - runtime libcryptokit-ocaml-dev/bionic 1.11-1build1 amd64 cryptographic algorithm library for OCaml - development libssl-dev/bionic-updates,bionic-security,now 1.1.0g-2ubuntu4.1 amd64 [installed] Secure Sockets Layer toolkit - development files libssl-doc/bionic-updates,bionic-updates,bionic-security,bionic-security,now 1.1.0g-2ubuntu4.1 all [installed] Secure Sockets Layer toolkit - development documentation libssl1.0-dev/bionic-updates,bionic-security 1.0.2n-1ubuntu5.1 amd64 Secure Sockets Layer toolkit - development files libssl1.0.0/bionic-updates,bionic-security,now 1.0.2n-1ubuntu5.1 amd64 [installed] Secure Sockets Layer toolkit - shared libraries libssl1.1/bionic-updates,bionic-security,now 1.1.0g-2ubuntu4.1 amd64 [installed] Secure Sockets Layer toolkit - shared libraries r-cran-openssl/bionic 1.0.1-1ubuntu1 amd64 GNU R toolkit for encryption, signatures and certificates based on OpenSSL