On 12 Oct 2005, at 6:55 AM, Werner Koch wrote:
On Tue, 11 Oct 2005 22:50:34 -0400, David Shaw said:I support making 0x19 backsigs a MUST.I concur with David. I am actually a heavy user of signing subkeys because they allow to keep the primary key offline.
I also added an implementation nit:The 0x19 back signatures were not required for signing subkeys until relatively recently. Consquently, there may be keys in the wild that do not have these back signatures. Implementing software may handle these keys as it sees fit.
Jon