diff options
Diffstat (limited to 'cipher/ecc-curves.c')
| -rw-r--r-- | cipher/ecc-curves.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/cipher/ecc-curves.c b/cipher/ecc-curves.c index f8d561cb..a019e054 100644 --- a/cipher/ecc-curves.c +++ b/cipher/ecc-curves.c @@ -34,6 +34,10 @@ #include "ecc-common.h" +static gpg_err_code_t +point_from_keyparam (gcry_mpi_point_t *r_a, + gcry_sexp_t keyparam, const char *name, mpi_ec_t ec); + /* This tables defines aliases for curve names. */ static const struct { @@ -782,7 +786,7 @@ _gcry_ecc_get_curve (gcry_sexp_t keyparms, int iterator, unsigned int *r_nbits) gpg_err_code_t rc; const char *result = NULL; elliptic_curve_t E; - gcry_mpi_t mpi_g = NULL; + gcry_mpi_point_t G = NULL; gcry_mpi_t tmp = NULL; int idx; @@ -807,9 +811,8 @@ _gcry_ecc_get_curve (gcry_sexp_t keyparms, int iterator, unsigned int *r_nbits) /* * Extract the curve parameters.. */ - rc = gpg_err_code (sexp_extract_param (keyparms, NULL, "pabgn", - &E.p, &E.a, &E.b, &mpi_g, &E.n, - NULL)); + rc = gpg_err_code (sexp_extract_param (keyparms, NULL, "pabn", + &E.p, &E.a, &E.b, &E.n, NULL)); if (rc == GPG_ERR_NO_OBJ) { /* This might be the second use case of checking whether a @@ -840,12 +843,12 @@ _gcry_ecc_get_curve (gcry_sexp_t keyparms, int iterator, unsigned int *r_nbits) if (rc) goto leave; - if (mpi_g) - { - _gcry_mpi_point_init (&E.G); - if (_gcry_ecc_os2ec (&E.G, mpi_g)) - goto leave; - } + rc = point_from_keyparam (&G, keyparms, "g", NULL); + if (rc) + goto leave; + + _gcry_mpi_point_init (&E.G); + _gcry_mpi_point_set (&E.G, G->x, G->y, G->z); for (idx = 0; domain_parms[idx].desc; idx++) { @@ -886,11 +889,11 @@ _gcry_ecc_get_curve (gcry_sexp_t keyparms, int iterator, unsigned int *r_nbits) } leave: + _gcry_mpi_point_release (G); _gcry_mpi_release (tmp); _gcry_mpi_release (E.p); _gcry_mpi_release (E.a); _gcry_mpi_release (E.b); - _gcry_mpi_release (mpi_g); _gcry_mpi_point_free_parts (&E.G); _gcry_mpi_release (E.n); return result; |