2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * Portions originally developed by SUN MICROSYSTEMS, INC., and
13 * contributed to the OpenSSL project.
17 #include "internal/cryptlib.h"
18 #include <openssl/evp.h>
19 #include <openssl/ec.h>
20 #include <openssl/bn.h>
22 #ifndef OPENSSL_NO_STDIO
23 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
28 if ((b = BIO_new(BIO_s_file())) == NULL) {
29 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, ERR_R_BUF_LIB);
32 BIO_set_fp(b, fp, BIO_NOCLOSE);
33 ret = ECPKParameters_print(b, x, off);
38 int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
43 if ((b = BIO_new(BIO_s_file())) == NULL) {
44 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
47 BIO_set_fp(b, fp, BIO_NOCLOSE);
48 ret = EC_KEY_print(b, x, off);
53 int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
58 if ((b = BIO_new(BIO_s_file())) == NULL) {
59 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
62 BIO_set_fp(b, fp, BIO_NOCLOSE);
63 ret = ECParameters_print(b, x);
69 static int print_bin(BIO *fp, const char *str, const unsigned char *num,
72 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
74 int ret = 0, reason = ERR_R_BIO_LIB;
76 const EC_POINT *point = NULL;
77 BIGNUM *p = NULL, *a = NULL, *b = NULL, *gen = NULL;
78 const BIGNUM *order = NULL, *cofactor = NULL;
79 const unsigned char *seed;
82 static const char *gen_compressed = "Generator (compressed):";
83 static const char *gen_uncompressed = "Generator (uncompressed):";
84 static const char *gen_hybrid = "Generator (hybrid):";
87 reason = ERR_R_PASSED_NULL_PARAMETER;
93 reason = ERR_R_MALLOC_FAILURE;
97 if (EC_GROUP_get_asn1_flag(x)) {
98 /* the curve parameter are given by an asn1 OID */
102 if (!BIO_indent(bp, off, 128))
105 nid = EC_GROUP_get_curve_name(x);
108 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
110 if (BIO_printf(bp, "\n") <= 0)
112 nname = EC_curve_nid2nist(nid);
114 if (!BIO_indent(bp, off, 128))
116 if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
120 /* explicit parameters */
122 point_conversion_form_t form;
123 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
125 if (tmp_nid == NID_X9_62_characteristic_two_field)
128 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
129 (b = BN_new()) == NULL) {
130 reason = ERR_R_MALLOC_FAILURE;
133 #ifndef OPENSSL_NO_EC2M
135 if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx)) {
136 reason = ERR_R_EC_LIB;
139 } else /* prime field */
142 if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx)) {
143 reason = ERR_R_EC_LIB;
148 if ((point = EC_GROUP_get0_generator(x)) == NULL) {
149 reason = ERR_R_EC_LIB;
152 order = EC_GROUP_get0_order(x);
153 cofactor = EC_GROUP_get0_cofactor(x);
155 reason = ERR_R_EC_LIB;
159 form = EC_GROUP_get_point_conversion_form(x);
161 if ((gen = EC_POINT_point2bn(x, point, form, NULL, ctx)) == NULL) {
162 reason = ERR_R_EC_LIB;
166 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
167 seed_len = EC_GROUP_get_seed_len(x);
169 if (!BIO_indent(bp, off, 128))
172 /* print the 'short name' of the field type */
173 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
178 /* print the 'short name' of the base type OID */
179 int basis_type = EC_GROUP_get_basis_type(x);
183 if (!BIO_indent(bp, off, 128))
186 if (BIO_printf(bp, "Basis Type: %s\n",
187 OBJ_nid2sn(basis_type)) <= 0)
190 /* print the polynomial */
191 if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
195 if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
198 if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, NULL, off))
200 if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, NULL, off))
202 if (form == POINT_CONVERSION_COMPRESSED) {
203 if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
206 } else if (form == POINT_CONVERSION_UNCOMPRESSED) {
207 if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
210 } else { /* form == POINT_CONVERSION_HYBRID */
212 if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
216 if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
219 if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
222 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
228 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
237 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
248 memset(str, ' ', off);
249 if (BIO_write(fp, str, off) <= 0)
255 if (BIO_printf(fp, "%s", name) <= 0)
258 for (i = 0; i < len; i++) {
261 memset(&(str[1]), ' ', off + 4);
262 if (BIO_write(fp, str, off + 1 + 4) <= 0)
265 if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
269 if (BIO_write(fp, "\n", 1) <= 0)