1 /* crypto/ec/eck_prn.c */
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.
60 * Portions originally developed by SUN MICROSYSTEMS, INC., and
61 * contributed to the OpenSSL project.
66 #include <openssl/evp.h>
67 #include <openssl/ec.h>
68 #include <openssl/bn.h>
70 #ifndef OPENSSL_NO_STDIO
71 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
76 if ((b = BIO_new(BIO_s_file())) == NULL) {
77 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, ERR_R_BUF_LIB);
80 BIO_set_fp(b, fp, BIO_NOCLOSE);
81 ret = ECPKParameters_print(b, x, off);
86 int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
91 if ((b = BIO_new(BIO_s_file())) == NULL) {
92 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
95 BIO_set_fp(b, fp, BIO_NOCLOSE);
96 ret = EC_KEY_print(b, x, off);
101 int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
106 if ((b = BIO_new(BIO_s_file())) == NULL) {
107 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
110 BIO_set_fp(b, fp, BIO_NOCLOSE);
111 ret = ECParameters_print(b, x);
117 int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
122 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
124 ret = EVP_PKEY_print_private(bp, pk, off, NULL);
129 int ECParameters_print(BIO *bp, const EC_KEY *x)
134 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
136 ret = EVP_PKEY_print_params(bp, pk, 4, NULL);
141 static int print_bin(BIO *fp, const char *str, const unsigned char *num,
142 size_t len, int off);
144 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
146 unsigned char *buffer = NULL;
147 size_t buf_len = 0, i;
148 int ret = 0, reason = ERR_R_BIO_LIB;
150 const EC_POINT *point = NULL;
151 BIGNUM *p = NULL, *a = NULL, *b = NULL, *gen = NULL,
152 *order = NULL, *cofactor = NULL;
153 const unsigned char *seed;
156 static const char *gen_compressed = "Generator (compressed):";
157 static const char *gen_uncompressed = "Generator (uncompressed):";
158 static const char *gen_hybrid = "Generator (hybrid):";
161 reason = ERR_R_PASSED_NULL_PARAMETER;
167 reason = ERR_R_MALLOC_FAILURE;
171 if (EC_GROUP_get_asn1_flag(x)) {
172 /* the curve parameter are given by an asn1 OID */
176 if (!BIO_indent(bp, off, 128))
179 nid = EC_GROUP_get_curve_name(x);
182 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
184 if (BIO_printf(bp, "\n") <= 0)
186 nname = EC_curve_nid2nist(nid);
188 if (!BIO_indent(bp, off, 128))
190 if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
194 /* explicit parameters */
196 point_conversion_form_t form;
197 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
199 if (tmp_nid == NID_X9_62_characteristic_two_field)
202 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
203 (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
204 (cofactor = BN_new()) == NULL) {
205 reason = ERR_R_MALLOC_FAILURE;
208 #ifndef OPENSSL_NO_EC2M
210 if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx)) {
211 reason = ERR_R_EC_LIB;
214 } else /* prime field */
217 if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx)) {
218 reason = ERR_R_EC_LIB;
223 if ((point = EC_GROUP_get0_generator(x)) == NULL) {
224 reason = ERR_R_EC_LIB;
227 if (!EC_GROUP_get_order(x, order, NULL) ||
228 !EC_GROUP_get_cofactor(x, cofactor, NULL)) {
229 reason = ERR_R_EC_LIB;
233 form = EC_GROUP_get_point_conversion_form(x);
235 if ((gen = EC_POINT_point2bn(x, point, form, NULL, ctx)) == NULL) {
236 reason = ERR_R_EC_LIB;
240 buf_len = (size_t)BN_num_bytes(p);
241 if (buf_len < (i = (size_t)BN_num_bytes(a)))
243 if (buf_len < (i = (size_t)BN_num_bytes(b)))
245 if (buf_len < (i = (size_t)BN_num_bytes(gen)))
247 if (buf_len < (i = (size_t)BN_num_bytes(order)))
249 if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
252 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
253 seed_len = EC_GROUP_get_seed_len(x);
256 if ((buffer = OPENSSL_malloc(buf_len)) == NULL) {
257 reason = ERR_R_MALLOC_FAILURE;
261 if (!BIO_indent(bp, off, 128))
264 /* print the 'short name' of the field type */
265 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
270 /* print the 'short name' of the base type OID */
271 int basis_type = EC_GROUP_get_basis_type(x);
275 if (!BIO_indent(bp, off, 128))
278 if (BIO_printf(bp, "Basis Type: %s\n",
279 OBJ_nid2sn(basis_type)) <= 0)
282 /* print the polynomial */
283 if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, buffer,
287 if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer, off))
290 if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off))
292 if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off))
294 if (form == POINT_CONVERSION_COMPRESSED) {
295 if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
298 } else if (form == POINT_CONVERSION_UNCOMPRESSED) {
299 if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
302 } else { /* form == POINT_CONVERSION_HYBRID */
304 if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
308 if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
311 if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
314 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
320 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
336 OPENSSL_free(buffer);
340 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
351 memset(str, ' ', off);
352 if (BIO_write(fp, str, off) <= 0)
358 if (BIO_printf(fp, "%s", name) <= 0)
361 for (i = 0; i < len; i++) {
364 memset(&(str[1]), ' ', off + 4);
365 if (BIO_write(fp, str, off + 1 + 4) <= 0)
368 if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
372 if (BIO_write(fp, "\n", 1) <= 0)