CVSROOT: /cvs
Module name: src
Changes by: t...@cvs.openbsd.org 2024/12/06 08:39:59
Modified files:
lib/libcrypto/ec: ec_mult.c
Log message:
ec_mult: manage wNAF data in a struct
This refactors the wNAF multiplication further and introduces a small API
that manages the wNAF digits for bn and the multiples of digit * point in
a single struct that is initialized and freed in two API calls in the main
function, ec_wNAF_mul(). This way the main algorithm is no longer cluttered
with logic to keep various arrays in sync, helper functions calculating the
wNAF splitting of bn and multiples of the point do not need to deal with
memory management, and a pair of accessors obviates previously missing
bounds checking.
At this point we have reached a relatively clean and straightforward wNAF
implementation that fits precisely the purpose needed in libcrypto, i.e.,
ECDSA verification instead of being generalized and optimized to the max
for no good reason apart from endowing the author with an academic degree.
Popper's famous maxim "if you can't say it clearly, keep quiet, and keep
working until you can" very much applies to code as well. In other words,
shut up and hack (and don't pour too much energy into commit messages, tb).
ok jsing
