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OpenSSL

As explained in Hacking Cryptography

OpenSSL is an open-source software toolkit that provides implementations of cryptographic primitives, protocols, and related security functions.

OpenSSL is a widely used cryptographic engine for security-sensitive software. It provides a practical alternative to implementing cryptographic primitives, protocols, and related code from scratch, where subtle implementation errors can undermine otherwise sound security designs. section 1.4

Use OpenSSL as part of a broader engineering strategy:

  • Prefer established, thoroughly tested cryptographic implementations over custom production cryptography. section 1.4
  • Choose TLS rather than designing a private protocol for message encryption, using versions and algorithms recommended by relevant standards and regulatory authorities. section 1.4
  • Treat OpenSSL as a risk-reduction choice, not as a guarantee that bugs or insecure interactions are impossible. section 1.4

How Hacking Cryptography covers it

How deep it goes
Explains its engineering role and limitations, but does not detail APIs, configuration, algorithms, or vulnerability remediation.
Examples
Uses OpenSSL's adoption by large enterprises and governments as evidence for relying on widely reviewed implementations.
What it assumes
Assumes awareness of production code and cryptography while emphasizing that implementation correctness is difficult.
What you can do after
Evaluate whether established cryptographic software and standardized TLS are preferable to custom security code.
How it connects
Connects OpenSSL with cryptographic implementations, cryptographic protocols, TLS, and security engineering.

Also explained in

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This explainer was generated by Manning's knowledge graph from the text of Hacking Cryptography. The section links point to the parts of the book it draws on.