3 * Written by Nils Larsch for the OpenSSL project.
5 /* ====================================================================
6 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
58 /* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
61 * Portions of the attached software ("Contribution") are developed by
62 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
64 * The Contribution is licensed pursuant to the OpenSSL open source
65 * license provided above.
67 * The elliptic curve binary polynomial software is originally written by
68 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
72 #include <openssl/opensslconf.h>
80 #include <openssl/bio.h>
81 #include <openssl/err.h>
82 #include <openssl/bn.h>
83 #include <openssl/ec.h>
84 #include <openssl/x509.h>
85 #include <openssl/pem.h>
88 #define PROG ecparam_main
90 /* -inform arg - input format - default PEM (DER or PEM)
91 * -outform arg - output format - default PEM
92 * -in arg - input file - default stdin
93 * -out arg - output file - default stdout
94 * -noout - do not print the ec parameter
95 * -text - print the ec parameters in text form
96 * -check - validate the ec parameters
97 * -C - print a 'C' function creating the parameters
98 * -name arg - use the ec parameters with 'short name' name
99 * -list_curves - prints a list of all currently available curve 'short names'
100 * -conv_form arg - specifies the point conversion form
101 * - possible values: compressed
102 * uncompressed (default)
104 * -param_enc arg - specifies the way the ec parameters are encoded
105 * in the asn1 der encoding
106 * possible values: named_curve (default)
108 * -no_seed - if 'explicit' parameters are choosen do not use the seed
109 * -genkey - generate ec key
110 * -rand file - files to use for random number input
111 * -engine e - use engine e, possibly a hardware device
115 static int ecparam_print_var(BIO
*,BIGNUM
*,const char *,int,unsigned char *);
117 int MAIN(int, char **);
119 int MAIN(int argc
, char **argv
)
121 EC_GROUP
*group
= NULL
;
122 point_conversion_form_t form
= POINT_CONVERSION_UNCOMPRESSED
;
124 int asn1_flag
= OPENSSL_EC_NAMED_CURVE
;
125 int new_asn1_flag
= 0;
126 char *curve_name
= NULL
, *inrand
= NULL
;
127 int list_curves
= 0, no_seed
= 0, check
= 0,
128 badops
= 0, text
= 0, i
, need_rand
= 0, genkey
= 0;
129 char *infile
= NULL
, *outfile
= NULL
, *prog
;
130 BIO
*in
= NULL
, *out
= NULL
;
131 int informat
, outformat
, noout
= 0, C
= 0, ret
= 1;
134 BIGNUM
*ec_p
= NULL
, *ec_a
= NULL
, *ec_b
= NULL
,
135 *ec_gen
= NULL
, *ec_order
= NULL
, *ec_cofactor
= NULL
;
136 unsigned char *buffer
= NULL
;
141 if ((bio_err
=BIO_new(BIO_s_file())) != NULL
)
142 BIO_set_fp(bio_err
,stderr
,BIO_NOCLOSE
|BIO_FP_TEXT
);
144 if (!load_config(bio_err
, NULL
))
148 outformat
=FORMAT_PEM
;
155 if (strcmp(*argv
,"-inform") == 0)
157 if (--argc
< 1) goto bad
;
158 informat
=str2fmt(*(++argv
));
160 else if (strcmp(*argv
,"-outform") == 0)
162 if (--argc
< 1) goto bad
;
163 outformat
=str2fmt(*(++argv
));
165 else if (strcmp(*argv
,"-in") == 0)
167 if (--argc
< 1) goto bad
;
170 else if (strcmp(*argv
,"-out") == 0)
172 if (--argc
< 1) goto bad
;
175 else if (strcmp(*argv
,"-text") == 0)
177 else if (strcmp(*argv
,"-C") == 0)
179 else if (strcmp(*argv
,"-check") == 0)
181 else if (strcmp (*argv
, "-name") == 0)
185 curve_name
= *(++argv
);
187 else if (strcmp(*argv
, "-list_curves") == 0)
189 else if (strcmp(*argv
, "-conv_form") == 0)
195 if (strcmp(*argv
, "compressed") == 0)
196 form
= POINT_CONVERSION_COMPRESSED
;
197 else if (strcmp(*argv
, "uncompressed") == 0)
198 form
= POINT_CONVERSION_UNCOMPRESSED
;
199 else if (strcmp(*argv
, "hybrid") == 0)
200 form
= POINT_CONVERSION_HYBRID
;
204 else if (strcmp(*argv
, "-param_enc") == 0)
210 if (strcmp(*argv
, "named_curve") == 0)
211 asn1_flag
= OPENSSL_EC_NAMED_CURVE
;
212 else if (strcmp(*argv
, "explicit") == 0)
217 else if (strcmp(*argv
, "-no_seed") == 0)
219 else if (strcmp(*argv
, "-noout") == 0)
221 else if (strcmp(*argv
,"-genkey") == 0)
226 else if (strcmp(*argv
, "-rand") == 0)
228 if (--argc
< 1) goto bad
;
232 else if(strcmp(*argv
, "-engine") == 0)
234 if (--argc
< 1) goto bad
;
239 BIO_printf(bio_err
,"unknown option %s\n",*argv
);
250 BIO_printf(bio_err
, "%s [options] <infile >outfile\n",prog
);
251 BIO_printf(bio_err
, "where options are\n");
252 BIO_printf(bio_err
, " -inform arg input format - "
253 "default PEM (DER or PEM)\n");
254 BIO_printf(bio_err
, " -outform arg output format - "
256 BIO_printf(bio_err
, " -in arg input file - "
258 BIO_printf(bio_err
, " -out arg output file - "
260 BIO_printf(bio_err
, " -noout do not print the "
262 BIO_printf(bio_err
, " -text print the ec "
263 "parameters in text form\n");
264 BIO_printf(bio_err
, " -check validate the ec "
266 BIO_printf(bio_err
, " -C print a 'C' "
267 "function creating the parameters\n");
268 BIO_printf(bio_err
, " -name arg use the "
269 "ec parameters with 'short name' name\n");
270 BIO_printf(bio_err
, " -list_curves prints a list of "
271 "all currently available curve 'short names'\n");
272 BIO_printf(bio_err
, " -conv_form arg specifies the "
273 "point conversion form \n");
274 BIO_printf(bio_err
, " possible values:"
276 BIO_printf(bio_err
, " "
277 " uncompressed (default)\n");
278 BIO_printf(bio_err
, " "
280 BIO_printf(bio_err
, " -param_enc arg specifies the way"
281 " the ec parameters are encoded\n");
282 BIO_printf(bio_err
, " in the asn1 der "
284 BIO_printf(bio_err
, " possible values:"
285 " named_curve (default)\n");
286 BIO_printf(bio_err
, " "
288 BIO_printf(bio_err
, " -no_seed if 'explicit'"
289 " parameters are choosen do not"
291 BIO_printf(bio_err
, " -genkey generate ec"
293 BIO_printf(bio_err
, " -rand file files to use for"
294 " random number input\n");
295 BIO_printf(bio_err
, " -engine e use engine e, "
296 "possibly a hardware device\n");
300 ERR_load_crypto_strings();
302 in
=BIO_new(BIO_s_file());
303 out
=BIO_new(BIO_s_file());
304 if ((in
== NULL
) || (out
== NULL
))
306 ERR_print_errors(bio_err
);
311 BIO_set_fp(in
,stdin
,BIO_NOCLOSE
);
314 if (BIO_read_filename(in
,infile
) <= 0)
322 BIO_set_fp(out
,stdout
,BIO_NOCLOSE
);
323 #ifdef OPENSSL_SYS_VMS
325 BIO
*tmpbio
= BIO_new(BIO_f_linebuffer());
326 out
= BIO_push(tmpbio
, out
);
332 if (BIO_write_filename(out
,outfile
) <= 0)
339 #ifndef OPENSSL_NO_ENGINE
340 setup_engine(bio_err
, engine
, 0);
345 EC_builtin_curve
*curves
= NULL
;
349 crv_len
= EC_get_builtin_curves(NULL
, 0);
351 curves
= OPENSSL_malloc((int)(sizeof(EC_builtin_curve
) * crv_len
));
356 if (!EC_get_builtin_curves(curves
, crv_len
))
358 OPENSSL_free(curves
);
363 for (n
= 0; n
< crv_len
; n
++)
367 comment
= curves
[n
].comment
;
368 sname
= OBJ_nid2sn(curves
[n
].nid
);
370 comment
= "CURVE DESCRIPTION NOT AVAILABLE";
374 BIO_printf(out
, " %-10s: ", sname
);
375 BIO_printf(out
, "%s\n", comment
);
378 OPENSSL_free(curves
);
383 if (curve_name
!= NULL
)
387 /* workaround for the SECG curve names secp192r1
388 * and secp256r1 (which are the same as the curves
389 * prime192v1 and prime256v1 defined in X9.62)
391 if (!strcmp(curve_name
, "secp192r1"))
393 BIO_printf(bio_err
, "using curve name prime192v1 "
394 "instead of secp192r1\n");
395 nid
= NID_X9_62_prime192v1
;
397 else if (!strcmp(curve_name
, "secp256r1"))
399 BIO_printf(bio_err
, "using curve name prime256v1 "
400 "instead of secp256r1\n");
401 nid
= NID_X9_62_prime256v1
;
404 nid
= OBJ_sn2nid(curve_name
);
408 BIO_printf(bio_err
, "unknown curve name (%s)\n",
413 group
= EC_GROUP_new_by_curve_name(nid
);
416 BIO_printf(bio_err
, "unable to create curve (%s)\n",
420 EC_GROUP_set_asn1_flag(group
, asn1_flag
);
421 EC_GROUP_set_point_conversion_form(group
, form
);
423 else if (informat
== FORMAT_ASN1
)
425 group
= d2i_ECPKParameters_bio(in
, NULL
);
427 else if (informat
== FORMAT_PEM
)
429 group
= PEM_read_bio_ECPKParameters(in
,NULL
,NULL
,NULL
);
433 BIO_printf(bio_err
, "bad input format specified\n");
440 "unable to load elliptic curve parameters\n");
441 ERR_print_errors(bio_err
);
446 EC_GROUP_set_point_conversion_form(group
, form
);
449 EC_GROUP_set_asn1_flag(group
, asn1_flag
);
453 EC_GROUP_set_seed(group
, NULL
, 0);
458 if (!ECPKParameters_print(out
, group
, 0))
465 BIO_printf(bio_err
, "no elliptic curve parameters\n");
466 BIO_printf(bio_err
, "checking elliptic curve parameters: ");
467 if (!EC_GROUP_check(group
, NULL
))
469 BIO_printf(bio_err
, "failed\n");
470 ERR_print_errors(bio_err
);
473 BIO_printf(bio_err
, "ok\n");
479 size_t buf_len
= 0, tmp_len
= 0;
480 const EC_POINT
*point
;
481 int is_prime
, len
= 0;
482 const EC_METHOD
*meth
= EC_GROUP_method_of(group
);
484 if ((ec_p
= BN_new()) == NULL
|| (ec_a
= BN_new()) == NULL
||
485 (ec_b
= BN_new()) == NULL
|| (ec_gen
= BN_new()) == NULL
||
486 (ec_order
= BN_new()) == NULL
||
487 (ec_cofactor
= BN_new()) == NULL
)
489 perror("OPENSSL_malloc");
493 is_prime
= (EC_METHOD_get_field_type(meth
) ==
494 NID_X9_62_prime_field
);
498 if (!EC_GROUP_get_curve_GFp(group
, ec_p
, ec_a
,
508 if ((point
= EC_GROUP_get0_generator(group
)) == NULL
)
510 if (!EC_POINT_point2bn(group
, point
,
511 EC_GROUP_get_point_conversion_form(group
), ec_gen
,
514 if (!EC_GROUP_get_order(group
, ec_order
, NULL
))
516 if (!EC_GROUP_get_cofactor(group
, ec_cofactor
, NULL
))
519 if (!ec_p
|| !ec_a
|| !ec_b
|| !ec_gen
||
520 !ec_order
|| !ec_cofactor
)
523 len
= BN_num_bits(ec_order
);
525 if ((tmp_len
= (size_t)BN_num_bytes(ec_p
)) > buf_len
)
527 if ((tmp_len
= (size_t)BN_num_bytes(ec_a
)) > buf_len
)
529 if ((tmp_len
= (size_t)BN_num_bytes(ec_b
)) > buf_len
)
531 if ((tmp_len
= (size_t)BN_num_bytes(ec_gen
)) > buf_len
)
533 if ((tmp_len
= (size_t)BN_num_bytes(ec_order
)) > buf_len
)
535 if ((tmp_len
= (size_t)BN_num_bytes(ec_cofactor
)) > buf_len
)
538 buffer
= (unsigned char *)OPENSSL_malloc(buf_len
);
542 perror("OPENSSL_malloc");
546 ecparam_print_var(out
, ec_p
, "ec_p", len
, buffer
);
547 ecparam_print_var(out
, ec_a
, "ec_a", len
, buffer
);
548 ecparam_print_var(out
, ec_b
, "ec_b", len
, buffer
);
549 ecparam_print_var(out
, ec_gen
, "ec_gen", len
, buffer
);
550 ecparam_print_var(out
, ec_order
, "ec_order", len
, buffer
);
551 ecparam_print_var(out
, ec_cofactor
, "ec_cofactor", len
,
554 BIO_printf(out
, "\n\n");
556 BIO_printf(out
, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len
);
557 BIO_printf(out
, "\tint ok=0;\n");
558 BIO_printf(out
, "\tEC_GROUP *group = NULL;\n");
559 BIO_printf(out
, "\tEC_POINT *point = NULL;\n");
560 BIO_printf(out
, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, "
561 "*tmp_3 = NULL;\n\n");
562 BIO_printf(out
, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
563 "sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
564 "goto err;\n", len
, len
);
565 BIO_printf(out
, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
566 "sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
567 "goto err;\n", len
, len
);
568 BIO_printf(out
, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
569 "sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
570 "goto err;\n", len
, len
);
573 BIO_printf(out
, "\tif ((group = EC_GROUP_new_curve_"
574 "GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
575 "\n\t\tgoto err;\n\n");
582 BIO_printf(out
, "\t/* build generator */\n");
583 BIO_printf(out
, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
584 "sizeof(ec_gen_%d), tmp_1)) == NULL)"
585 "\n\t\tgoto err;\n", len
, len
);
586 BIO_printf(out
, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
588 BIO_printf(out
, "\tif (point == NULL)\n\t\tgoto err;\n");
589 BIO_printf(out
, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
590 "sizeof(ec_order_%d), tmp_2)) == NULL)"
591 "\n\t\tgoto err;\n", len
, len
);
592 BIO_printf(out
, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
593 "sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
594 "\n\t\tgoto err;\n", len
, len
);
595 BIO_printf(out
, "\tif (!EC_GROUP_set_generator(group, point,"
596 " tmp_2, tmp_3))\n\t\tgoto err;\n");
597 BIO_printf(out
, "\n\tok=1;\n");
598 BIO_printf(out
, "err:\n");
599 BIO_printf(out
, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
600 BIO_printf(out
, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
601 BIO_printf(out
, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
602 BIO_printf(out
, "\tif (point)\n\t\tEC_POINT_free(point);\n");
603 BIO_printf(out
, "\tif (!ok)\n");
604 BIO_printf(out
, "\t\t{\n");
605 BIO_printf(out
, "\t\tEC_GROUP_free(group);\n");
606 BIO_printf(out
, "\t\tgroup = NULL;\n");
607 BIO_printf(out
, "\t\t}\n");
608 BIO_printf(out
, "\treturn(group);\n\t}\n");
613 if (outformat
== FORMAT_ASN1
)
614 i
= i2d_ECPKParameters_bio(out
, group
);
615 else if (outformat
== FORMAT_PEM
)
616 i
= PEM_write_bio_ECPKParameters(out
, group
);
619 BIO_printf(bio_err
,"bad output format specified for"
625 BIO_printf(bio_err
, "unable to write elliptic "
626 "curve parameters\n");
627 ERR_print_errors(bio_err
);
634 app_RAND_load_file(NULL
, bio_err
, (inrand
!= NULL
));
636 BIO_printf(bio_err
,"%ld semi-random bytes loaded\n",
637 app_RAND_load_files(inrand
));
642 EC_KEY
*eckey
= EC_KEY_new();
649 if (EC_KEY_set_group(eckey
, group
) == 0)
652 if (!EC_KEY_generate_key(eckey
))
657 if (outformat
== FORMAT_ASN1
)
658 i
= i2d_ECPrivateKey_bio(out
, eckey
);
659 else if (outformat
== FORMAT_PEM
)
660 i
= PEM_write_bio_ECPrivateKey(out
, eckey
, NULL
,
661 NULL
, 0, NULL
, NULL
);
664 BIO_printf(bio_err
, "bad output format specified "
673 app_RAND_write_file(NULL
, bio_err
);
688 BN_free(ec_cofactor
);
690 OPENSSL_free(buffer
);
696 EC_GROUP_free(group
);
701 static int ecparam_print_var(BIO
*out
, BIGNUM
*in
, const char *var
,
702 int len
, unsigned char *buffer
)
704 BIO_printf(out
, "static unsigned char %s_%d[] = {", var
, len
);
706 BIO_printf(out
, "\n\t0x00");
711 l
= BN_bn2bin(in
, buffer
);
712 for (i
=0; i
<l
-1; i
++)
715 BIO_printf(out
, "\n\t");
716 BIO_printf(out
, "0x%02X,", buffer
[i
]);
719 BIO_printf(out
, "\n\t");
720 BIO_printf(out
, "0x%02X", buffer
[i
]);
722 BIO_printf(out
, "\n\t};\n\n");
725 #else /* !OPENSSL_NO_EC */
728 static void *dummy
=&dummy
;