yes, the concept of erasure codes just works with the raw bits. so it would work equally for encrypted/unencrypted data from the wikipedia page, it "transforms

yes, the concept of erasure codes just works with the raw bits. so it would work equally for encrypted/unencrypted data from the wikipedia page, it "transforms a message of k symbols into a longer message (code word) with n symbols such that the original message can be recovered from a subset of the n symbols"