Inside Ruby's OpenSSL stdlib:

Ruby’s OpenSSL extension provides Ruby APIs that wrap native OpenSSL C functionality for HTTPS and secure communication. It exposes TLS and certificate capabilities through classes such as OpenSSL::SSL::SSLSocket and related SSL/TLS objects. The bridge relies on TypedData wrappers to represent native OpenSSL structures safely in Ruby. Memory management is handled to ensure native resources are allocated, referenced, and released correctly. The extension also supports cryptographic primitives including digests and encryption by mapping Ruby method calls to OpenSSL functions. These bindings integrate with Ruby’s runtime so Ruby code can use OpenSSL features consistently across the ecosystem.

"Ruby’s OpenSSL extension bridges native OpenSSL C APIs into Ruby classes and methods that power HTTPS, TLS, certificates, digests, encryption, and secure communication across the Ruby ecosystem."

"TypedData wrappers and careful memory management connect Ruby objects to underlying OpenSSL structures, ensuring native resources are handled safely while exposing a Ruby-friendly interface."

"OpenSSL::SSL::SSLSocket internals show how Ruby routes SSL/TLS operations through the extension layer, translating Ruby calls into OpenSSL behavior for network security."

"The extension source code maps cryptographic operations like digests and encryption to OpenSSL primitives, letting Ruby applications use strong security features through idiomatic Ruby APIs."

Read at rubyflow.com