XDS sha-1 is still okay

I get the following question about every other month. Here is the version I just responded to:In this project I encountered a requirement to use SHA-256. Apparently this was in reaction to the SHA-1 collision vulnerability (https://shattered.io/) from late 2017. IHE XDS requires the hash to be SHA-1. Have you heard of any requests to change that?There is no requirement in IHE that a Document Consumer must check the size+hash against the document they have received. This would be a...