sane-backends should be ported to use NSS library for cryptography.
See the tracking bug for details and links on how it could be done.
Where in GIMP does it use cryptography that you think needs to be converted over
to using NSS?
Well, not in GIMP but in sane-backends of course.
/sane-backends-1.0.18/sanei/sanei_auth.c:41: This file implements an interface
for user authorization using MD5 digest */
Sorry for the long wait. At the moment, I don't have the time to work on this, such a change would have to be done involving upstream. Closing accordingly.