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6.50.2. Contents of OpenSSL
Installed programs: c_rehash and openssl
Installed libraries: libcrypto.{so,a} and libssl.{so,a}
Installed directories: /etc/ssl, /usr/include/openssl, /usr/lib/engines and /usr/share/doc/openssl-1.1.1c
Short Descriptions
c_rehash is a Perl script that scans all files in a directory and adds symbolic links to their hash values.
openssl is a command-line tool for using the various cryptography functions of OpenSSL's crypto library from the shell. It can be used for various functions which are documented in man 1 openssl.
libcrypto.so implements a wide range of cryptographic algorithms used in various Internet standards. The services provided by this library are used by the OpenSSL implementations of SSL, TLS and S/ MIME, and they have also been used to implement OpenSSH, OpenPGP, and other cryptographic standards.
libssl.so implements the Transport Layer Security (TLS v1) protocol. It provides a rich API, documentation on which can be found by running man 3 ssl.