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* mpi/ec-ed25519.c: New but empty file.
* mpi/ec-internal.h: New.
* mpi/ec.c: Include ec-internal.h.
(ec_mod): New.
(ec_addm): Use ec_mod.
(ec_mulm): Remove commented code. Use ec_mod.
(ec_subm): Call simple sub.
(ec_pow2): Use ec_mulm.
(ec_mul2): New.
(dup_point_weierstrass): Use ec_mul2.
(dup_point_twistededwards): Add special case for a == -1. Use
ec_mul2.
(add_points_weierstrass): Use ec_mul2.
(add_points_twistededwards): Add special case for a == -1.
(_gcry_mpi_ec_curve_point): Ditto.
(ec_p_init): Add hack to test Barrett functions.
* src/ec-context.h (mpi_ec_ctx_s): Add P_BARRETT.
* mpi/mpi-mod.c (_gcry_mpi_mod_barrett): Fix sign problem.
Signed-off-by: Werner Koch <wk@gnupg.org>
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