diff options
Diffstat (limited to 'crypto/ec/ec_lib.c')
-rw-r--r-- | crypto/ec/ec_lib.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/crypto/ec/ec_lib.c b/crypto/ec/ec_lib.c index 3241aa51d9..0890109980 100644 --- a/crypto/ec/ec_lib.c +++ b/crypto/ec/ec_lib.c @@ -319,12 +319,16 @@ int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, BN_zero(&group->cofactor); /* - * We ignore the return value because some groups have an order with + * Some groups have an order with * factors of two, which makes the Montgomery setup fail. * |group->mont_data| will be NULL in this case. */ - ec_precompute_mont_data(group); + if (BN_is_odd(&group->order)) { + return ec_precompute_mont_data(group); + } + BN_MONT_CTX_free(group->mont_data); + group->mont_data = NULL; return 1; } |