openbsd/src/lib/libcrypto/bn/arch, branch OPENBSD_7_7A mirror of https://github.com/libressl/openbsd.git
https://git.lua4.win/openbsd/atom?h=OPENBSD_7_72024-03-26T06:09:25+00:00Provide an optimised bn_subw() for amd64.2024-03-26T06:09:25+00:00jsing2024-03-26T06:09:25+00:00urn:sha1:76fb2cf7d456ff89c43a9f58c3b1142078060c79
bn_subw() will be used more widely in an upcoming change.
Replace uses of endbr64 with _CET_ENDBR from cet.h2024-02-24T15:30:14+00:00tb2024-02-24T15:30:14+00:00urn:sha1:c730c3b3b1845cc7c4a4aceff2031f1135faa6bb
cet.h is needed for other platforms to emit the relevant .gnu.properties
sections that are necessary for them to enable IBT. It also avoids issues
with older toolchains on macOS that explode on encountering endbr64.
based on a diff by kettenis
ok beck kettenis
Mark read/write registers as non-overlapping for bn_qwmulw_{addqw_,}addw()2023-07-24T10:21:29+00:00jsing2023-07-24T10:21:29+00:00urn:sha1:4c10fa62f800291a02f5e14311eec1a14d18057b
This does not cause an issue currently, however if called differently to
their current usage, it can lead to an input being overwritten and
incorrect results being generated.
Provide optimised bn_subw() for riscv64.2023-07-09T10:37:32+00:00jsing2023-07-09T10:37:32+00:00urn:sha1:28c5ee8a29423ac4e370b5f92748954d0c5e2ec5Provide optimised bn_addw() for riscv64.2023-07-09T10:36:53+00:00jsing2023-07-09T10:36:53+00:00urn:sha1:7c9d7c86e6114e6a51e2894d616a32b4adb71a51Provide optimised bn_mulw() for riscv64.2023-07-07T16:10:32+00:00jsing2023-07-07T16:10:32+00:00urn:sha1:66ac57d506be0af957abeb5a5a7334a8d2a36c9b
This provides a 1.5-2x performance gain for BN multiplication, with a
similar improvement being seen for RSA operations.
Rewrite and simplify bn_sqr()/bn_sqr_normal().2023-06-24T16:01:44+00:00jsing2023-06-24T16:01:44+00:00urn:sha1:3180c8185bba7d792127e1b9bc87f11e439ba0fb
Rework bn_sqr()/bn_sqr_normal() so that it is less convoluted and more
readable. Instead of recomputing values that the caller has already
computed, pass it as an argument. Avoid branching and remove duplication
of variables. Consistently use a_len and r_len naming for lengths.
ok tb@
Provide optimised bn_subw() and bn_subw_subw() for arm.2023-06-24T15:51:47+00:00jsing2023-06-24T15:51:47+00:00urn:sha1:d88d3c7eb1bc4b0da2212f0020a52430971c7e74Provide optimised bn_clzw() for aarch64.2023-06-21T07:56:43+00:00jsing2023-06-21T07:56:43+00:00urn:sha1:ad88bf2f67997bb60ec7841577bd3253b872853eOptimise bn_mul2_mulw_addtw() for aarch64.2023-06-17T15:40:46+00:00jsing2023-06-17T15:40:46+00:00urn:sha1:c4cf90a6f9bdc4c2b5bf83876448ace95db0376a
This provides significant performance gains for bn_sqr_comba4() and
bn_sqr_comba8().