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Fix crypto/ec/ec_mult.c to work properly with scalars of value 0

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Bodo Möller
2007-05-22 09:47:43 +00:00
parent 8dbdf6314c
commit 19f6c524bf
5 changed files with 49 additions and 7 deletions
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14
crypto/ec/ectest.c
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@@ -649,13 +649,15 @@ void prime_field_tests()
if (!EC_POINT_is_at_infinity(group, R)) ABORT; /* R = P + 2Q */
{
const EC_POINT *points[3];
const BIGNUM *scalars[3];
const EC_POINT *points[4];
const BIGNUM *scalars[4];
BIGNUM scalar3;
if (EC_POINT_is_at_infinity(group, Q)) ABORT;
points[0] = Q;
points[1] = Q;
points[2] = Q;
points[3] = Q;
if (!BN_add(y, z, BN_value_one())) ABORT;
if (BN_is_odd(y)) ABORT;
@@ -694,10 +696,16 @@ void prime_field_tests()
scalars[1] = y;
scalars[2] = z; /* z = -(x+y) */
if (!EC_POINTs_mul(group, P, NULL, 3, points, scalars, ctx)) ABORT;
BN_init(&scalar3);
BN_zero(&scalar3);
scalars[3] = &scalar3;
if (!EC_POINTs_mul(group, P, NULL, 4, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
fprintf(stdout, " ok\n\n");
BN_free(&scalar3);
}