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| author | Mary Ruthven <mruthven@chromium.org> | 2021-11-09 16:55:30 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-11-18 04:50:46 +0000 |
| commit | 543a18ecf75480886e15a7be48e57c9271ab5333 (patch) | |
| tree | 4b4709853507ebcb92b526ed32c2903e6a2ea5ce /common | |
| parent | 39bc3a4c0d3132551151298efcf3bf12c3bc10a4 (diff) | |
| download | chrome-ec-543a18ecf75480886e15a7be48e57c9271ab5333.tar.gz | |
Revert "rsa: Further optimization of multiplications for Cortex-M0"
This reverts commit ecd0d1b5767c829f4c73a79a9eb6abae343284fb.
BUG=b:200823466
TEST=make buildall -j
Change-Id: I1229e86f015e1a04ee8026abd2f647d6039125fd
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3273423
Reviewed-by: Vadim Sukhomlinov <sukhomlinov@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/rsa.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/common/rsa.c b/common/rsa.c index 10f0afa4b4..9350f88554 100644 --- a/common/rsa.c +++ b/common/rsa.c @@ -56,8 +56,8 @@ static void mont_mul_add(const struct rsa_public_key *key, uint32_t i; for (i = 1; i < RSANUMWORDS; ++i) { - A = mulaa32(a, b[i], c[i], A >> 32); - B = mulaa32(d0, key->n[i], A, B >> 32); + A = (A >> 32) + mula32(a, b[i], c[i]); + B = (B >> 32) + mula32(d0, key->n[i], A); c[i - 1] = (uint32_t)B; } @@ -82,7 +82,7 @@ static void mont_mul_add_0(const struct rsa_public_key *key, uint32_t i; for (i = 1; i < RSANUMWORDS; ++i) { - B = mulaa32(d0, key->n[i], c[i], B >> 32); + B = (B >> 32) + mula32(d0, key->n[i], c[i]); c[i - 1] = (uint32_t)B; } |