Class: OpenSSL::PKey::EC::Point

Inherits:
Object
  • Object
show all
Defined in:
ossl_pkey_ec.c

Defined Under Namespace

Classes: Error

Instance Method Summary collapse

Constructor Details

#OpenSSL::PKey::EC::Point.new(point) ⇒ Object #OpenSSL::PKey::EC::Point.new(group) ⇒ Object #OpenSSL::PKey::EC::Point.new(group, bn) ⇒ Object

See the OpenSSL documentation for EC_POINT_*



1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
# File 'ossl_pkey_ec.c', line 1269

static VALUE ossl_ec_point_initialize(int argc, VALUE *argv, VALUE self)
{
    ossl_ec_point *ec_point;
    EC_POINT *point = NULL;
    VALUE arg1, arg2;
    VALUE group_v = Qnil;
    const EC_GROUP *group = NULL;

    TypedData_Get_Struct(self, ossl_ec_point, &ossl_ec_point_type, ec_point);
    if (ec_point->point)
        ossl_raise(eEC_POINT, "EC_POINT already initialized");

    switch (rb_scan_args(argc, argv, "11", &arg1, &arg2)) {
    case 1:
        if (rb_obj_is_kind_of(arg1, cEC_POINT)) {
            const EC_POINT *arg_point;

            group_v = rb_iv_get(arg1, "@group");
            SafeRequire_EC_GROUP(group_v, group);
            SafeRequire_EC_POINT(arg1, arg_point);

            point = EC_POINT_dup(arg_point, group);
        } else if (rb_obj_is_kind_of(arg1, cEC_GROUP)) {
            group_v = arg1;
            SafeRequire_EC_GROUP(group_v, group);

            point = EC_POINT_new(group);
        } else {
            ossl_raise(eEC_POINT, "wrong argument type: must be OpenSSL::PKey::EC::Point or OpenSSL::Pkey::EC::Group");
        }

        break;
     case 2:
        if (!rb_obj_is_kind_of(arg1, cEC_GROUP))
            ossl_raise(rb_eArgError, "1st argument must be OpenSSL::PKey::EC::Group");
        group_v = arg1;
        SafeRequire_EC_GROUP(group_v, group);

        if (rb_obj_is_kind_of(arg2, cBN)) {
            const BIGNUM *bn = GetBNPtr(arg2);

            point = EC_POINT_bn2point(group, bn, NULL, ossl_bn_ctx);
        } else {
            BIO *in = ossl_obj2bio(arg1);

/* BUG: finish me */

            BIO_free(in);

            if (point == NULL) {
                ossl_raise(eEC_POINT, "unknown type for 2nd arg");
            }
        }
        break;
    default:
        ossl_raise(rb_eArgError, "wrong number of arguments");
    }

    if (point == NULL)
        ossl_raise(eEC_POINT, NULL);

    if (NIL_P(group_v))
        ossl_raise(rb_eRuntimeError, "missing group (internal error)");

    ec_point->point = point;

    rb_iv_set(self, "@group", group_v);

    return self;
}

Instance Method Details

#eql?(point2) ⇒ Boolean #==(point2) ⇒ Boolean Also known as: ==

Returns:

  • (Boolean)


1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
# File 'ossl_pkey_ec.c', line 1346

static VALUE ossl_ec_point_eql(VALUE a, VALUE b)
{
    EC_POINT *point1, *point2;
    VALUE group_v1 = rb_iv_get(a, "@group");
    VALUE group_v2 = rb_iv_get(b, "@group");
    const EC_GROUP *group;

    if (ossl_ec_group_eql(group_v1, group_v2) == Qfalse)
        return Qfalse;

    Require_EC_POINT(a, point1);
    SafeRequire_EC_POINT(b, point2);
    SafeRequire_EC_GROUP(group_v1, group);

    if (EC_POINT_cmp(group, point1, point2, ossl_bn_ctx) == 1)
        return Qfalse;

    return Qtrue;
}

#infinity?Boolean

Returns:

  • (Boolean)


1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
# File 'ossl_pkey_ec.c', line 1371

static VALUE ossl_ec_point_is_at_infinity(VALUE self)
{
    EC_POINT *point;
    VALUE group_v = rb_iv_get(self, "@group");
    const EC_GROUP *group;

    Require_EC_POINT(self, point);
    SafeRequire_EC_GROUP(group_v, group);

    switch (EC_POINT_is_at_infinity(group, point)) {
    case 1: return Qtrue;
    case 0: return Qfalse;
    default: ossl_raise(cEC_POINT, "EC_POINT_is_at_infinity");
    }

    UNREACHABLE;
}

#invert!self

Returns:

  • (self)


1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
# File 'ossl_pkey_ec.c', line 1437

static VALUE ossl_ec_point_invert(VALUE self)
{
    EC_POINT *point;
    VALUE group_v = rb_iv_get(self, "@group");
    const EC_GROUP *group;

    Require_EC_POINT(self, point);
    SafeRequire_EC_GROUP(group_v, group);

    if (EC_POINT_invert(group, point, ossl_bn_ctx) != 1)
        ossl_raise(cEC_POINT, "EC_POINT_invert");

    return self;
}

#make_affine!self

Returns:

  • (self)


1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
# File 'ossl_pkey_ec.c', line 1417

static VALUE ossl_ec_point_make_affine(VALUE self)
{
    EC_POINT *point;
    VALUE group_v = rb_iv_get(self, "@group");
    const EC_GROUP *group;

    Require_EC_POINT(self, point);
    SafeRequire_EC_GROUP(group_v, group);

    if (EC_POINT_make_affine(group, point, ossl_bn_ctx) != 1)
        ossl_raise(cEC_POINT, "EC_POINT_make_affine");

    return self;
}

#mul(bn) ⇒ Object #mul(bn, bn) ⇒ Object #mul([bn], [point]) ⇒ Object #mul([bn], [point], bn) ⇒ Object



1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
# File 'ossl_pkey_ec.c', line 1508

static VALUE ossl_ec_point_mul(int argc, VALUE *argv, VALUE self)
{
    EC_POINT *point1, *point2;
    const EC_GROUP *group;
    VALUE group_v = rb_iv_get(self, "@group");
    VALUE bn_v1, bn_v2, r, points_v;
    BIGNUM *bn1 = NULL, *bn2 = NULL;

    Require_EC_POINT(self, point1);
    SafeRequire_EC_GROUP(group_v, group);

    r = rb_obj_alloc(cEC_POINT);
    ossl_ec_point_initialize(1, &group_v, r);
    Require_EC_POINT(r, point2);

    argc = rb_scan_args(argc, argv, "12", &bn_v1, &points_v, &bn_v2);

    if (rb_obj_is_kind_of(bn_v1, cBN)) {
        bn1 = GetBNPtr(bn_v1);
        if (argc >= 2) {
            bn2 = GetBNPtr(points_v);
        }
        if (EC_POINT_mul(group, point2, bn2, point1, bn1, ossl_bn_ctx) != 1)
            ossl_raise(eEC_POINT, "Multiplication failed");
    } else {
        size_t i, points_len, bignums_len;
        const EC_POINT **points;
        const BIGNUM **bignums;

        Check_Type(bn_v1, T_ARRAY);
        bignums_len = RARRAY_LEN(bn_v1);
        bignums = (const BIGNUM **)OPENSSL_malloc(bignums_len * (int)sizeof(BIGNUM *));

        for (i = 0; i < bignums_len; ++i) {
            bignums[i] = GetBNPtr(rb_ary_entry(bn_v1, i));
        }

        if (!rb_obj_is_kind_of(points_v, rb_cArray)) {
            OPENSSL_free((void *)bignums);
            rb_raise(rb_eTypeError, "Argument2 must be an array");
        }

        rb_ary_unshift(points_v, self);
        points_len = RARRAY_LEN(points_v);
        points = (const EC_POINT **)OPENSSL_malloc(points_len * (int)sizeof(EC_POINT *));

        for (i = 0; i < points_len; ++i) {
            Get_EC_POINT(rb_ary_entry(points_v, i), points[i]);
        }

        if (argc >= 3) {
            bn2 = GetBNPtr(bn_v2);
        }
        if (EC_POINTs_mul(group, point2, bn2, points_len, points, bignums, ossl_bn_ctx) != 1) {
            OPENSSL_free((void *)bignums);
            OPENSSL_free((void *)points);
            ossl_raise(eEC_POINT, "Multiplication failed");
        }
        OPENSSL_free((void *)bignums);
        OPENSSL_free((void *)points);
    }

    return r;
}

#on_curve?Boolean

Returns:

  • (Boolean)


1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
# File 'ossl_pkey_ec.c', line 1394

static VALUE ossl_ec_point_is_on_curve(VALUE self)
{
    EC_POINT *point;
    VALUE group_v = rb_iv_get(self, "@group");
    const EC_GROUP *group;

    Require_EC_POINT(self, point);
    SafeRequire_EC_GROUP(group_v, group);

    switch (EC_POINT_is_on_curve(group, point, ossl_bn_ctx)) {
    case 1: return Qtrue;
    case 0: return Qfalse;
    default: ossl_raise(cEC_POINT, "EC_POINT_is_on_curve");
    }

    UNREACHABLE;
}

#set_to_infinity!self

Returns:

  • (self)


1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
# File 'ossl_pkey_ec.c', line 1457

static VALUE ossl_ec_point_set_to_infinity(VALUE self)
{
    EC_POINT *point;
    VALUE group_v = rb_iv_get(self, "@group");
    const EC_GROUP *group;

    Require_EC_POINT(self, point);
    SafeRequire_EC_GROUP(group_v, group);

    if (EC_POINT_set_to_infinity(group, point) != 1)
        ossl_raise(cEC_POINT, "EC_POINT_set_to_infinity");

    return self;
}

#to_bnOpenSSL::BN

See the OpenSSL documentation for EC_POINT_point2bn()

Returns:



1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
# File 'ossl_pkey_ec.c', line 1478

static VALUE ossl_ec_point_to_bn(VALUE self)
{
    EC_POINT *point;
    VALUE bn_obj;
    VALUE group_v = rb_iv_get(self, "@group");
    const EC_GROUP *group;
    point_conversion_form_t form;
    BIGNUM *bn;

    Require_EC_POINT(self, point);
    SafeRequire_EC_GROUP(group_v, group);

    form = EC_GROUP_get_point_conversion_form(group);

    bn_obj = rb_obj_alloc(cBN);
    bn = GetBNPtr(bn_obj);

    if (EC_POINT_point2bn(group, point, form, bn, ossl_bn_ctx) == NULL)
        ossl_raise(eEC_POINT, "EC_POINT_point2bn");

    return bn_obj;
}