Skip X.509 extension copies where possible #70589
Merged
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There are a few places where we take a strongly typed object for an
X509Extension, serialize it to bytes, and then pass it to a base constructor, which copies it.This PR introduces an internal constructor that skips the copy for the places where we know that the data going in to
AsnEncodedDatacan have ownership of the data being passed.This also adds a cached Oid instance for the AIA extension.