alt Hacker NewsSAML is even worse than the article describes, problems like needing to check what the signature actually signs. But I'm optimistic about the future, instead of relying on libraries that do a lot, such as general xml parsing, we can support a subset of SAML and only the dialects of the top ~10 providers. Extreme niche providers can be added ad-hoc and only if the deal size makes it worthwhile.
> … needing to check what the signature actually signs.
I mean … how else would you check a signature? You have to have the data to validate the signature.