Cryptography Tutorials - Herong's Tutorial Examples - v5.40, by Dr. Herong Yang
What Is OpenSSL?
This section describes what is OpenSSL - a cryptography toolkit for SSL (Secure Sockets Layer and TLS (Transport Layer Security). It offers command line tool for generating private keys and managing public keys.
OpenSSL is a cryptography toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) network protocols and related cryptography standards required by them.
The openssl program is a command line tool for using the various cryptography functions of OpenSSL's crypto library from the shell. It can be used for:
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