I’ve forked the repository and prepared a separate branch where mDNSCore/DNSDigest.c is fully updated to an OpenSSL 3.6.0-derived implementation (Apache-2.0 licensed), replacing the legacy pre-3.0 OpenSSL MD5 code and its OpenSSL/SSLeay license block. Here is the link to the branch - https://github.com/mr-holodok/mDNSResponder/tree/update-dnsdigest-openssl-license# I haven’t opened a PR (PRs are restricted on this repo), but I can submit a PR for review if maintainers confirm that updating/replacing the MD5 implementation with Apache-2.0 provenance (OpenSSL 3.6.0) would be acceptable and give me corresponding permissions.