openbsd/src/lib/libcrypto/bn, branch libressl-v4.2.1A mirror of https://github.com/libressl/openbsd.git
https://git.lua4.win/openbsd/atom?h=libressl-v4.2.12025-09-07T06:28:03+00:00Remove BN_DIV2W.2025-09-07T06:28:03+00:00jsing2025-09-07T06:28:03+00:00urn:sha1:98287b7cd5d64488bbaf57088225f91bd8e8a7f9
The BN_DIV2W define provides a code path for double word division via the C
compiler, which is only enabled on hppa. Simplify the code and mop this up.
ok tb@
Re-enable bn_sqr_words() assembly.2025-09-07T05:21:29+00:00jsing2025-09-07T05:21:29+00:00urn:sha1:9283c4361ce1f1a39a1f03c588c3d1a3da64025e
This is now only on amd64.
Rename old assembly bn_sqr_words() to bn_sqr_word_wise().2025-09-07T03:56:37+00:00jsing2025-09-07T03:56:37+00:00urn:sha1:6dd87e766b900133746524ad2d5599160de6f5c8
bn_sqr_words() does not actually compute the square of the words, it only
computes the square of each individual word - rename it to reflect reality.
Discussed with tb@
Disable assembly bn_sqr_words() again for now.2025-09-02T14:18:38+00:00jsing2025-09-02T14:18:38+00:00urn:sha1:99f066b0e074e44bab8174651b96c62ac333cc64
The old assembly bn_sqr_words() does not actually square words in the
bignum sense. These will have to be renamed (once I come up with a name
for whatever it actually does) before we can roll forward again.
Found the hard way by Janne Johansson.
Add const here as well...2025-09-01T15:39:59+00:00jsing2025-09-01T15:39:59+00:00urn:sha1:8262857db881f41bd13636dcc49f7f4b28ba9e08Use bn_mul_words() from bn_mod_mul_words().2025-09-01T15:35:25+00:00jsing2025-09-01T15:35:25+00:00urn:sha1:99d47c1078643352842f47b6330086d9affefb59
Use bn_mul_words() and bn_montgomery_reduce_words(), rather than using
bn_montgomery_multiply_words(). This provides better performance on
architectures that have assembly optimised bn_mul_words(), such as amd64.
Constify bn_mul_words().2025-09-01T15:33:23+00:00jsing2025-09-01T15:33:23+00:00urn:sha1:edd4db8b24106490f82c1a694d4e2b35afe9c6cbUse bn_sqr_words() from bn_mod_sqr_words().2025-09-01T15:18:55+00:00jsing2025-09-01T15:18:55+00:00urn:sha1:a71d96fc5f06e3d4eaad85e2958a525f4f6fd26e
Use bn_sqr_words() and bn_montgomery_reduce_words(), rather than using
bn_montgomery_multiply_words(). This provides better performance on
architectures that have assembly optimised bn_sqr_words(), such as amd64.
ok tb@
Provide bn_mul_words() on amd64.2025-09-01T15:15:44+00:00jsing2025-09-01T15:15:44+00:00urn:sha1:b788687c68f1df8051cd54ab960dd9f91c4671d8
This uses s2n-bignum's bignum_mul() and provides significant performance
gains for a range of multiplication sizes.
Reorder functions since they've been renamed.2025-08-31T09:34:51+00:00jsing2025-08-31T09:34:51+00:00urn:sha1:db246afaad7e4bbe59bd2805c624374b2f5f8f7d