The logs showed a single line that mattered: OpenSSL error in OPA’s policy check.
Open Policy Agent (OPA) is the control plane for authorization in modern systems. It decides, with precision, who can do what. When combined with OpenSSL, it secures the channel, proving trust before permission is even considered. Together they form a gate that no one can bypass without meeting your rules—fast, deterministic, and cryptographically sound.
Integrating OPA with OpenSSL isn’t just about TLS or certificates. It’s about making policy enforcement bulletproof. OPA can consume inputs like certificate fingerprints, client identities, or signing metadata verified through OpenSSL. From there, policies run in Rego to decide access, block suspicious agents, or trigger audits. Your services stop guessing and start proving.
The strongest setups pair mutual TLS with policy enforcement. OpenSSL handles the handshake. It confirms both server and client identities. OPA takes that verified context—the CN, SAN, or issued-by fields—and applies fine-grained logic. No hacks. No insecure short paths. You get end-to-end trust from the packet to the policy decision.