amazon-archives / certlint

X.509 certificate linter
Apache License 2.0
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CAA information for domains in certificate #61

Open Santhanraj opened 6 years ago

Santhanraj commented 6 years ago

Adds a "-CAA" flag which performs real-time CAA check as per RFC 6844 Section 4 (Errata 5065, 5097). The resulting record is printed as a message with "CAA:" tag, however the record values are accessible through a hash which can be used in monitoring systems. E.g., Monitor new certs in CT. If the cert was issued recently, and if the CAA information disallows such a issuance, it can be flagged for investigation.