Trying to build CMS signed data message with no content

[Jamil Nimeh]

Hi all,

I'm stuck on a problem I'm hoping someone can help me out with. I'm
trying to create a CMS signed data message with the eContent omitted.
When I pass zero-length data into NSS_CMSEncoder_Update() (null pointer,
empty string, doesn't seem to matter) I end up getting
SEC_ERROR_DIGEST_NOT_FOUND when NSS_CMSEncoder_Finish() is called. If I
include even 1 byte of data, then everything seems to work just fine.

Is there a way to get the encoder to honor the optional nature of
eContent? Am I just missing a step or call somewhere?

Any suggestions would be greatly appreciated. I'm stumped.

Thank you,
Jamil