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| author | nagendra modadugu <ngm@google.com> | 2016-07-14 03:42:54 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2016-07-14 20:08:28 +0000 |
| commit | 20158b1bc5a80812dde7b798296a8b6e5dcc8400 (patch) | |
| tree | b546a3977ac1c8bcbba3bca0f3c1a4458a7452a6 | |
| parent | c4c66e5424b25fbb60d0590ce05ee3d91a7e7801 (diff) | |
| download | chrome-ec-20158b1bc5a80812dde7b798296a8b6e5dcc8400.tar.gz | |
CR50: add a #define guard to enable use of non-asm bignum
Bignum test code that runs on host (e.g. x86) can't
make use of CR50 assembly; add a #define switch which
allows for host builds.
BUG=chrome-os-partner:43025,chrome-os-partner:47524
TEST=build succeeds
Change-Id: Ia754fd47e958e8338cd4cee60405305e58b8aa88
Reviewed-on: https://chromium-review.googlesource.com/360247
Commit-Queue: Nagendra Modadugu <ngm@google.com>
Trybot-Ready: Nagendra Modadugu <ngm@google.com>
Tested-by: Nagendra Modadugu <ngm@google.com>
Reviewed-by: Marius Schilder <mschilder@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
| -rw-r--r-- | chip/g/dcrypto/bn.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/chip/g/dcrypto/bn.c b/chip/g/dcrypto/bn.c index bff4f5b996..ae76cb0858 100644 --- a/chip/g/dcrypto/bn.c +++ b/chip/g/dcrypto/bn.c @@ -340,6 +340,7 @@ void bn_mont_modexp(struct BIGNUM *output, const struct BIGNUM *input, struct BIGNUM acc; struct BIGNUM aR; +#ifndef CR50_NO_BN_ASM if (bn_bits(N) == 2048 || bn_bits(N) == 1024) { /* TODO(ngm): add hardware support for standard key sizes. */ bn_mont_modexp_asm(output, input, exp, N); @@ -349,6 +350,7 @@ void bn_mont_modexp(struct BIGNUM *output, const struct BIGNUM *input, bn_add(output, N); return; } +#endif bn_init(&RR, RR_buf, bn_size(N)); bn_init(&acc, acc_buf, bn_size(N)); |