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unsigned.Design removes the signature from an x509.Certificate and optionally replaces the signature algorithm with id-alg-unsigned (which makes it a true RFC 9925 unsigned certificate). This is useful for (a) generating MTC CA certificates and (b) reducing the size of lint certs that we store in the database. We don't want to replace the signature algorithm when storing lint certs, because we will later verify that all fields of a CA-signed precertificate match all fields of a lint final certificate, and swapping out signature algorithm would cause that check to break. These certificates can be parsed with `x509.ParseCertificate`, but of course they can't be verified.
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unsigned.Design removes the signature from an x509.Certificate and optionally replaces the signature algorithm with id-alg-unsigned (which makes it a true RFC 9925 unsigned certificate).
This is useful for (a) generating MTC CA certificates and (b) reducing the size of lint certs that we store in the database.
We don't want to replace the signature algorithm when storing lint certs, because we will later verify that all fields of a CA-signed precertificate match all fields of a lint final certificate, and swapping out signature algorithm would cause that check to break.
These certificates can be parsed with
x509.ParseCertificate, but of course they can't be verified.(Bikeshedding very welcome on the package and function name! :D)