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Further improve/fix ec_GFp_simple_points_make_affine (ecp_smpl.c) and

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group_order_tests (ectest.c).  Also fix the EC_POINTs_mul documentation (ec.h).

Reviewed-by: emilia@openssl.org
This commit is contained in:
Bodo Moeller 2014-08-13 17:37:19 +02:00
parent 5ed0b6ac0c
commit 267e6f3cc0
3 changed files with 6 additions and 5 deletions
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2
crypto/ec/ec.h
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@ -631,7 +631,7 @@ int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN
int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx);
/** Computes r = generator * n sum_{i=0}^num p[i] * m[i]
/** Computes r = generator * n sum_{i=0}^{num-1} p[i] * m[i]
* \param group underlying EC_GROUP object
* \param r EC_POINT object for the result
* \param n BIGNUM with the multiplier for the group generator (optional)

4
crypto/ec/ecp_smpl.c
View File

@ -1318,8 +1318,8 @@ int ec_GFp_simple_points_make_affine(const EC_GROUP *group, size_t num, EC_POINT
{
for (i = 0; i < num; i++)
{
if (prod_Z[i] != NULL)
BN_clear_free(prod_Z[i]);
if (prod_Z[i] == NULL) break;
BN_clear_free(prod_Z[i]);
}
OPENSSL_free(prod_Z);
}

5
crypto/ec/ectest.c
View File

@ -251,14 +251,15 @@ static void group_order_tests(EC_GROUP *group)
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
/* Exercise EC_POINTs_mul, including corner cases. */
if (EC_POINT_is_at_infinity(group, P)) ABORT;
scalars[0] = n1; points[0] = Q; /* => infinity */
scalars[1] = n2; points[1] = P; /* => -P */
scalars[2] = n1; points[2] = Q; /* => infinity */
scalars[3] = n2; points[3] = Q; /* => infinity */
scalars[4] = n1; points[4] = P; /* => P */
scalars[5] = n2; points[5] = Q; /* => infinity */
if (!EC_POINTs_mul(group, Q, NULL, 5, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
if (!EC_POINTs_mul(group, P, NULL, 6, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
}
fprintf(stdout, "ok\n");