Add bounded DER certificate explorer

trustlab/examples/probe.js

@@ -28,6 +28,7 @@ function printReport({ facts, findings, caveats }) {
     console.log(`${index + 1}. ${certificate.subject}`);
     console.log(`   SHA-256 ${certificate.sha256}`);
     console.log(`   ${certificate.validFrom} — ${certificate.validUntil}${certificate.isCa ? " · CA" : ""}${certificate.selfSigned ? " · self-signed" : ""}`);
+    if (certificate.keyUsages.length) console.log(`   Key Usage: ${certificate.keyUsages.join(", ")}`);
   });
   console.log("\nFindings:");
   if (findings.length === 0) console.log("- No failure found by the current checks.");