Claude/defcon1 dual yubikey auth 01 cc kr5t kb l8cq ys exbd19qf

.gitignore

@@ -78,3 +78,27 @@ pythonenv*
 /clang/utils/analyzer/projects/*/RefScanBuildResults
 # automodapi puts generated documentation files here.
 /lldb/docs/python_api/
+
+# LAT5150DRVMIL reference copy - exclude build artifacts
+lat5150drvmil/02-ai-engine/tpm2_compat/c_acceleration/target/
+lat5150drvmil/.cache/
+lat5150drvmil/Upgrades.zip
+
+#==============================================================================#
+# Security-sensitive files (private keys, certificates, secrets)
+#==============================================================================#
+*.pem
+*.key
+*.p12
+*.pfx
+*.der
+*.crt
+*.cer
+*.csr
+*_signing_key.*
+*_private_key.*
+*.env.local
+*.env.production
+.env
+secrets.json
+credentials.json