mpi:ec: Introduce ec_*_lli for Weierstrass curves to be less leaky.
d1c471c78d6f
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Description

mpi:ec: Introduce ec_*_lli for Weierstrass curves to be less leaky.

* mpi/ec.c (ec_addm_lli, ec_subm_lli, ec_mulm_lli): New.
(dup_point_weierstrass_lli): New, using ec_*_lli.
(add_points_weierstrass_a): Use ec_*_lli.
(mpi_ec_mul_point_lli): Use dup_point_weierstrass_lli.
Remove mpi_point_resize.

GnuPG-bug-id: T7519
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>

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Provenance

• gniibe

Authored on Thu, Mar 27, 3:14 AM

Parents

rC4f56fd8c5e03: mpi:ec: Don't normalize the MPIs when GCRYECC_FLAG_LEAST_LEAK.

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HEAD -> master

Tasks

T7519: libgcrypt: (EC)DSA signature generation should be constant-time

Event Timeline

• gniibe committed rCd1c471c78d6f: mpi:ec: Introduce ec_*_lli for Weierstrass curves to be less leaky. (authored by • gniibe).Fri, Mar 28, 2:33 AM

• gniibe added a task: T7519: libgcrypt: (EC)DSA signature generation should be constant-time.Mon, Mar 31, 5:02 AM

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mpi/

ec.c

rCd1c471c78d6f

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mpi:ec: Introduce ec_*_lli for Weierstrass curves to be less leaky.d1c471c78d6fActions

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rCd1c471c78d6f

mpi/ec.c

mpi:ec: Introduce ec_*_lli for Weierstrass curves to be less leaky.
d1c471c78d6f
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