diff options
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/ec/ec2_smpl.c')
| -rwxr-xr-x | Cryptlib/OpenSSL/crypto/ec/ec2_smpl.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/Cryptlib/OpenSSL/crypto/ec/ec2_smpl.c b/Cryptlib/OpenSSL/crypto/ec/ec2_smpl.c index 5cd1eac4..c06b3b66 100755 --- a/Cryptlib/OpenSSL/crypto/ec/ec2_smpl.c +++ b/Cryptlib/OpenSSL/crypto/ec/ec2_smpl.c @@ -174,8 +174,10 @@ int ec_GF2m_simple_group_copy(EC_GROUP *dest, const EC_GROUP *src) dest->poly[2] = src->poly[2]; dest->poly[3] = src->poly[3]; dest->poly[4] = src->poly[4]; - bn_wexpand(&dest->a, (int)(dest->poly[0] + BN_BITS2 - 1) / BN_BITS2); - bn_wexpand(&dest->b, (int)(dest->poly[0] + BN_BITS2 - 1) / BN_BITS2); + if(bn_wexpand(&dest->a, (int)(dest->poly[0] + BN_BITS2 - 1) / BN_BITS2) == NULL) + return 0; + if(bn_wexpand(&dest->b, (int)(dest->poly[0] + BN_BITS2 - 1) / BN_BITS2) == NULL) + return 0; for (i = dest->a.top; i < dest->a.dmax; i++) dest->a.d[i] = 0; for (i = dest->b.top; i < dest->b.dmax; i++) dest->b.d[i] = 0; return 1; @@ -199,12 +201,12 @@ int ec_GF2m_simple_group_set_curve(EC_GROUP *group, /* group->a */ if (!BN_GF2m_mod_arr(&group->a, a, group->poly)) goto err; - bn_wexpand(&group->a, (int)(group->poly[0] + BN_BITS2 - 1) / BN_BITS2); + if(bn_wexpand(&group->a, (int)(group->poly[0] + BN_BITS2 - 1) / BN_BITS2) == NULL) goto err; for (i = group->a.top; i < group->a.dmax; i++) group->a.d[i] = 0; /* group->b */ if (!BN_GF2m_mod_arr(&group->b, b, group->poly)) goto err; - bn_wexpand(&group->b, (int)(group->poly[0] + BN_BITS2 - 1) / BN_BITS2); + if(bn_wexpand(&group->b, (int)(group->poly[0] + BN_BITS2 - 1) / BN_BITS2) == NULL) goto err; for (i = group->b.top; i < group->b.dmax; i++) group->b.d[i] = 0; ret = 1; @@ -819,7 +821,7 @@ int ec_GF2m_simple_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_ field_sqr = group->meth->field_sqr; /* only support affine coordinates */ - if (!point->Z_is_one) goto err; + if (!point->Z_is_one) return -1; if (ctx == NULL) { @@ -869,6 +871,9 @@ int ec_GF2m_simple_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT { return EC_POINT_is_at_infinity(group, b) ? 0 : 1; } + + if (EC_POINT_is_at_infinity(group, b)) + return 1; if (a->Z_is_one && b->Z_is_one) { |