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| author | Markus Teich <markus.teich@stusta.mhn.de> | 2014-10-07 18:24:27 +0200 |
|---|---|---|
| committer | Werner Koch <wk@gnupg.org> | 2014-10-08 14:57:54 +0200 |
| commit | 23ecadf309f8056c35cc092e58df801ac0eab862 (patch) | |
| tree | 3bac6e35eea431db27553646b8815cdecf5fdfce /src/visibility.c | |
| parent | a078436be5b656e4a2acfaeb5f054b9991f617e5 (diff) | |
| download | libgcrypt-23ecadf309f8056c35cc092e58df801ac0eab862.tar.gz | |
mpi: Add gcry_mpi_ec_sub.
* NEWS (gcry_mpi_ec_sub): New.
* doc/gcrypt.texi (gcry_mpi_ec_sub): New.
* mpi/ec.c (_gcry_mpi_ec_sub, sub_points_edwards): New.
(sub_points_montgomery, sub_points_weierstrass): New stubs.
* src/gcrypt-int.h (_gcry_mpi_ec_sub): New.
* src/gcrypt.h.in (gcry_mpi_ec_sub): New.
* src/libgcrypt.def (gcry_mpi_ec_sub): New.
* src/libgcrypt.vers (gcry_mpi_ec_sub): New.
* src/mpi.h (_gcry_mpi_ec_sub_points): New.
* src/visibility.c (gcry_mpi_ec_sub): New.
* src/visibility.h (gcry_mpi_ec_sub): New.
--
This function subtracts two points on the curve. Only Twisted Edwards
curves are supported with this change.
Signed-off-by: Markus Teich <markus dot teich at stusta dot mhn dot de>
Diffstat (limited to 'src/visibility.c')
| -rw-r--r-- | src/visibility.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/visibility.c b/src/visibility.c index 6ed57ca6..fa23e53c 100644 --- a/src/visibility.c +++ b/src/visibility.c @@ -567,6 +567,14 @@ gcry_mpi_ec_add (gcry_mpi_point_t w, } void +gcry_mpi_ec_sub (gcry_mpi_point_t w, + gcry_mpi_point_t u, gcry_mpi_point_t v, gcry_ctx_t ctx) +{ + _gcry_mpi_ec_sub_points (w, u, v, + _gcry_ctx_get_pointer (ctx, CONTEXT_TYPE_EC)); +} + +void gcry_mpi_ec_mul (gcry_mpi_point_t w, gcry_mpi_t n, gcry_mpi_point_t u, gcry_ctx_t ctx) { |