http://bugs.winehq.org/show_bug.cgi?id=15707
--- Comment #7 from Austin English austinenglish@gmail.com 2009-03-04 13:53:30 --- (In reply to comment #6)
It's i2d_X509 that's missing, not id2_X509.
A quick grep shows it's present in OpenSolaris as well. See attachment.