OpenSSL

A cryptography tool used toOpenSSL is a toolkit for SSL (Secure Socket Layer) that implements the network protocols such as TLS (Transport Layer Security) and SSL (Secure Sockets Layer). It uses various cryptographic functions from the shell’s crypto library.It is useful for the creation of CRLs and CSRs, management of public and private keys, and for the encryption and decryption with ciphers. deliver the cryptographic functions to some other packages like OpenSSH. OpenSSL is a open-source implementation of the SSL and TLS protocols which provides cryptographic functionality.