OpenSSL is a popular open source cross-platform cryptographic library. In addition to well-known cryptographic algorithms and hash functions, the library also implements the SSL and TLS protocols; many sites on the Internet that use the HTTPS protocol use this library.
The library can be downloaded from the official website (www.openssl.org) in source code. Version 3.1.0 can be downloaded through www.openssl.org/source/openssl-3.1.0.tar.gz ...