On 31 May 2005, at 2:16 AM, Ben Laurie wrote:
This is a reason to deprecate them, not a reason not to describe them.
They're more than deprecated, they're disallowed. All of the keys have
been declared invalid. The documents don't say you MUST or even SHOULD
consider them all broken, but no one would bat an eyelash if you did.
Nonetheless, if you wanted to look inside one anyway, a lawyerly
reading of the document doesn't disallow it.
I believe Konrad Rosenbaum is correct, that it's a PKCS1/1.5 content.
The GnuPG guys would be best to comment, as they're the only ones who
ever implemented them.
Jon