Class: OpenSSL::PKey::EC

Inherits:
PKey
  • Object
show all
Defined in:
ext/rubysl/openssl/ossl_pkey_ec.c

Defined Under Namespace

Classes: Group, Point

Constant Summary collapse

NAMED_CURVE = 
ULONG2NUM(OPENSSL_EC_NAMED_CURVE)

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PKey

#sign, #verify

Constructor Details

#OpenSSL::PKey::EC.new ⇒ Object #OpenSSL::PKey::EC.new(ec_key) ⇒ Object #OpenSSL::PKey::EC.new(ec_group) ⇒ Object #OpenSSL::PKey::EC.new("secp112r1") ⇒ Object #OpenSSL::PKey::EC.new(pem_string) ⇒ Object #OpenSSL::PKey::EC.new(der_string) ⇒ Object

See the OpenSSL documentation for:

EC_KEY_*



160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 160

static VALUE ossl_ec_key_initialize(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    EC_KEY *ec = NULL;
    VALUE arg, pass;
    VALUE group = Qnil;
	
    GetPKey(self, pkey);
    if (pkey->pkey.ec)
        rb_raise(eECError, "EC_KEY already initialized");

    rb_scan_args(argc, argv, "02", &arg, &pass);

    if (NIL_P(arg)) {
        ec = EC_KEY_new();
    } else {
        if (rb_obj_is_kind_of(arg, cEC)) {
            EC_KEY *other_ec = NULL;

            SafeRequire_EC_KEY(arg, other_ec);
            ec = EC_KEY_dup(other_ec);
        } else if (rb_obj_is_kind_of(arg, cEC_GROUP)) {
        	ec = EC_KEY_new();
        	group = arg;
        } else {
            BIO *in = ossl_obj2bio(arg);

            ec = PEM_read_bio_ECPrivateKey(in, NULL, NULL, NULL);
            if (!ec) {
                BIO_reset(in);
                ec = PEM_read_bio_EC_PUBKEY(in, NULL, NULL, NULL);
            }
            if (!ec) {
                BIO_reset(in);
                ec = d2i_ECPrivateKey_bio(in, NULL);
            }
            if (!ec) {
                BIO_reset(in);
                ec = d2i_EC_PUBKEY_bio(in, NULL);
            }

            BIO_free(in);

            if (ec == NULL) {
                const char *name = STR2CSTR(arg);
                int nid = OBJ_sn2nid(name);

                if (nid == NID_undef)
                    ossl_raise(eECError, "unknown curve name (%s)\n", name);

                if ((ec = EC_KEY_new_by_curve_name(nid)) == NULL)
                    ossl_raise(eECError, "unable to create curve (%s)\n", name);

                EC_KEY_set_asn1_flag(ec, OPENSSL_EC_NAMED_CURVE);
                EC_KEY_set_conv_form(ec, POINT_CONVERSION_UNCOMPRESSED);
            }
        }
    }

    if (ec == NULL)
        ossl_raise(eECError, NULL);

    if (!EVP_PKEY_assign_EC_KEY(pkey, ec)) {
	EC_KEY_free(ec);
	ossl_raise(eECError, "EVP_PKEY_assign_EC_KEY");
    }

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

    if (!NIL_P(group))
        rb_funcall(self, rb_intern("group="), 1, arg);

    return self;
}

Class Method Details

.builtin_curves ⇒ Array

See the OpenSSL documentation for EC_builtin_curves()

Returns:

  • (Array) 


964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 964

static VALUE ossl_s_builtin_curves(VALUE self)
{
    EC_builtin_curve *curves = NULL;
    int n;
    int crv_len = EC_get_builtin_curves(NULL, 0);
    VALUE ary, ret;

    curves = ALLOCA_N(EC_builtin_curve, crv_len);
    if (curves == NULL)
        return Qnil;
    if (!EC_get_builtin_curves(curves, crv_len))
        ossl_raise(rb_eRuntimeError, "EC_get_builtin_curves");

    ret = rb_ary_new2(crv_len);

    for (n = 0; n < crv_len; n++) {
        const char *sname = OBJ_nid2sn(curves[n].nid);
        const char *comment = curves[n].comment;

        ary = rb_ary_new2(2);
        rb_ary_push(ary, rb_str_new2(sname));
        rb_ary_push(ary, comment ? rb_str_new2(comment) : Qnil);
        rb_ary_push(ret, ary);
    }

    return ret;
}

Instance Method Details

#check_key ⇒ true

Raises an exception if the key is invalid.

See the OpenSSL documentation for EC_KEY_check_key()

Returns:

  • (true) 


612
613
614
615
616
617
618
619
620
621
622
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 612

static VALUE ossl_ec_key_check_key(VALUE self)
{
    EC_KEY *ec;

    Require_EC_KEY(self, ec);

    if (EC_KEY_check_key(ec) != 1)
	ossl_raise(eECError, "EC_KEY_check_key");

    return Qtrue;
}

#dh_compute_key(pubkey) ⇒ String

See the OpenSSL documentation for ECDH_compute_key()

Returns:

  • (String) 


630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 630

static VALUE ossl_ec_key_dh_compute_key(VALUE self, VALUE pubkey)
{
    EC_KEY *ec;
    EC_POINT *point;
    int buf_len;
    VALUE str;

    Require_EC_KEY(self, ec);
    SafeRequire_EC_POINT(pubkey, point);

/* BUG: need a way to figure out the maximum string size */
    buf_len = 1024;
    str = rb_str_new(0, buf_len);
/* BUG: take KDF as a block */
    buf_len = ECDH_compute_key(RSTRING_PTR(str), buf_len, point, ec, NULL);
    if (buf_len < 0)
         ossl_raise(eECError, "ECDH_compute_key");

    rb_str_resize(str, buf_len);

    return str;
}

#dsa_sign_asn1(data) ⇒ String

See the OpenSSL documentation for ECDSA_sign()

Returns:

  • (String) 


661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 661

static VALUE ossl_ec_key_dsa_sign_asn1(VALUE self, VALUE data)
{
    EC_KEY *ec;
    unsigned int buf_len;
    VALUE str;

    Require_EC_KEY(self, ec);
    StringValue(data);

    if (EC_KEY_get0_private_key(ec) == NULL)
	ossl_raise(eECError, "Private EC key needed!");

    str = rb_str_new(0, ECDSA_size(ec) + 16);
    if (ECDSA_sign(0, (unsigned char *) RSTRING_PTR(data), RSTRING_LEN(data), (unsigned char *) RSTRING_PTR(str), &buf_len, ec) != 1)
         ossl_raise(eECError, "ECDSA_sign");

    rb_str_resize(str, buf_len);

    return str;
}

#dsa_verify_asn1(data, sig) ⇒ Boolean

See the OpenSSL documentation for ECDSA_verify()

Returns:

  • (Boolean) 


688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 688

static VALUE ossl_ec_key_dsa_verify_asn1(VALUE self, VALUE data, VALUE sig)
{
    EC_KEY *ec;

    Require_EC_KEY(self, ec);
    StringValue(data);
    StringValue(sig);

    switch (ECDSA_verify(0, (unsigned char *) RSTRING_PTR(data), RSTRING_LEN(data), (unsigned char *) RSTRING_PTR(sig), RSTRING_LEN(sig), ec)) {
    case 1:	return Qtrue;
    case 0:	return Qfalse;
    default:	break;
    }

    ossl_raise(eECError, "ECDSA_verify");
}

#generate_key ⇒ self

See the OpenSSL documentation for EC_KEY_generate_key()

Returns:

  • (self) 


592
593
594
595
596
597
598
599
600
601
602
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 592

static VALUE ossl_ec_key_generate_key(VALUE self)
{
    EC_KEY *ec;

    Require_EC_KEY(self, ec);

    if (EC_KEY_generate_key(ec) != 1)
	ossl_raise(eECError, "EC_KEY_generate_key");

    return self;
}

#group ⇒ Object

Returns a constant OpenSSL::EC::Group that is tied to the key. Modifying the returned group can make the key invalid.



242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 242

static VALUE ossl_ec_key_get_group(VALUE self)
{
    VALUE group_v;
    EC_KEY *ec;
    ossl_ec_group *ec_group;
    EC_GROUP *group;

    Require_EC_KEY(self, ec);

    group_v = rb_iv_get(self, "@group");
    if (!NIL_P(group_v))
        return group_v;

    if ((group = (EC_GROUP *)EC_KEY_get0_group(ec)) != NULL) {
        group_v = rb_obj_alloc(cEC_GROUP);
        SafeGet_ec_group(group_v, ec_group);
        ec_group->group = group;
        ec_group->dont_free = 1;
        rb_iv_set(group_v, "@key", self);
        rb_iv_set(self, "@group", group_v);
        return group_v;
    }

    return Qnil;
}

#group=(group) ⇒ Object

Returns the same object passed, not the group object associated with the key. If you wish to access the group object tied to the key call key.group after setting the group.

Setting the group will immediately destroy any previously assigned group object. The group is internally copied by OpenSSL. Modifying the original group after assignment will not effect the internal key structure. (your changes may be lost). BE CAREFUL.

EC_KEY_set_group calls EC_GROUP_free(key->group) then EC_GROUP_dup(), not EC_GROUP_copy. This documentation is accurate for OpenSSL 0.9.8b.



284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 284

static VALUE ossl_ec_key_set_group(VALUE self, VALUE group_v)
{
    VALUE old_group_v;
    EC_KEY *ec;
    EC_GROUP *group;

    Require_EC_KEY(self, ec);
    SafeRequire_EC_GROUP(group_v, group);

    old_group_v = rb_iv_get(self, "@group");
    if (!NIL_P(old_group_v)) {
        ossl_ec_group *old_ec_group;
        SafeGet_ec_group(old_group_v, old_ec_group);

        old_ec_group->group = NULL;
        old_ec_group->dont_free = 0;
        rb_iv_set(old_group_v, "@key", Qnil);
    }

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

    if (EC_KEY_set_group(ec, group) != 1)
        ossl_raise(eECError, "EC_KEY_set_group");

    return group_v;
}

#private_key ⇒ OpenSSL::BN

See the OpenSSL documentation for EC_KEY_get0_private_key()

Returns:



317
318
319
320
321
322
323
324
325
326
327
328
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 317

static VALUE ossl_ec_key_get_private_key(VALUE self)
{
    EC_KEY *ec;
    const BIGNUM *bn;

    Require_EC_KEY(self, ec);

    if ((bn = EC_KEY_get0_private_key(ec)) == NULL)
        return Qnil;

    return ossl_bn_new(bn);
}

#private_key=(openssl_bn) ⇒ Object

See the OpenSSL documentation for EC_KEY_set_private_key()



336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 336

static VALUE ossl_ec_key_set_private_key(VALUE self, VALUE private_key)
{
    EC_KEY *ec;
    BIGNUM *bn = NULL;

    Require_EC_KEY(self, ec);
    if (!NIL_P(private_key))
        bn = GetBNPtr(private_key);

    switch (EC_KEY_set_private_key(ec, bn)) {
    case 1:
        break;
    case 0:
        if (bn == NULL)
            break;
    default:
        ossl_raise(eECError, "EC_KEY_set_private_key");
    }

    return private_key;
}

#private_key? ⇒ Boolean

Both public_key? and private_key? may return false at the same time unlike other PKey classes.

Returns:

  • (Boolean) 


451
452
453
454
455
456
457
458
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 451

static VALUE ossl_ec_key_is_private_key(VALUE self)
{
    EC_KEY *ec;

    Require_EC_KEY(self, ec);

    return (EC_KEY_get0_private_key(ec) ? Qtrue : Qfalse);
}

#public_key ⇒ OpenSSL::PKey::EC::Point

See the OpenSSL documentation for EC_KEY_get0_public_key()

Returns:



384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 384

static VALUE ossl_ec_key_get_public_key(VALUE self)
{
    EC_KEY *ec;
    const EC_POINT *point;
    VALUE group;

    Require_EC_KEY(self, ec);

    if ((point = EC_KEY_get0_public_key(ec)) == NULL)
        return Qnil;

    group = rb_funcall(self, rb_intern("group"), 0);
    if (NIL_P(group))
        ossl_raise(eECError, "EC_KEY_get0_get0_group (has public_key but no group???");

    return ossl_ec_point_dup(point, group);
}

#public_key=(ec_point) ⇒ Object

See the OpenSSL documentation for EC_KEY_set_public_key()



408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 408

static VALUE ossl_ec_key_set_public_key(VALUE self, VALUE public_key)
{
    EC_KEY *ec;
    EC_POINT *point = NULL;

    Require_EC_KEY(self, ec);
    if (!NIL_P(public_key))
        SafeRequire_EC_POINT(public_key, point);

    switch (EC_KEY_set_public_key(ec, point)) {
    case 1:
        break;
    case 0:
        if (point == NULL)
            break;
    default:
        ossl_raise(eECError, "EC_KEY_set_public_key");
    }

    return public_key;
}

#public_key? ⇒ Boolean

Both public_key? and private_key? may return false at the same time unlike other PKey classes.

Returns:

  • (Boolean) 


436
437
438
439
440
441
442
443
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 436

static VALUE ossl_ec_key_is_public_key(VALUE self)
{
    EC_KEY *ec;

    Require_EC_KEY(self, ec);

    return (EC_KEY_get0_public_key(ec) ? Qtrue : Qfalse);
}

#to_der ⇒ String

See the OpenSSL documentation for i2d_ECPrivateKey_bio()

Returns:

  • (String) 


556
557
558
559
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 556

static VALUE ossl_ec_key_to_der(VALUE self)
{
    return ossl_ec_key_to_string(self, EXPORT_DER);
}

#to_pem ⇒ String

See the OpenSSL documentation for PEM_write_bio_ECPrivateKey()

Returns:

  • (String) 


545
546
547
548
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 545

static VALUE ossl_ec_key_to_pem(VALUE self)
{
    return ossl_ec_key_to_string(self, EXPORT_PEM);
}

#to_text ⇒ String

See the OpenSSL documentation for EC_KEY_print()

Returns:

  • (String) 


567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
 
# File 'ext/rubysl/openssl/ossl_pkey_ec.c', line 567

static VALUE ossl_ec_key_to_text(VALUE self)
{
    EC_KEY *ec;
    BIO *out;
    VALUE str;

    Require_EC_KEY(self, ec);
    if (!(out = BIO_new(BIO_s_mem()))) {
	ossl_raise(eECError, "BIO_new(BIO_s_mem())");
    }
    if (!EC_KEY_print(out, ec, 0)) {
	BIO_free(out);
	ossl_raise(eECError, "EC_KEY_print");
    }
    str = ossl_membio2str(out);

    return str;
}