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source: vbox/trunk/src/libs/openssl-1.1.1j/crypto/ec/eck_prn.c@ 88461

Last change on this file since 88461 was 87984, checked in by vboxsync, 4 years ago

openssl-1.1.1j: Applied and adjusted our OpenSSL changes to 1.1.1j. bugref:9963
File size: 7.3 KB
Line 
1/*
2 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 *
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
9 */
10
11#include <stdio.h>
12#include "internal/cryptlib.h"
13#include <openssl/evp.h>
14#include <openssl/ec.h>
15#include <openssl/bn.h>
16
17#ifndef OPENSSL_NO_STDIO
18int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
19{
20 BIO *b;
21 int ret;
22
23 if ((b = BIO_new(BIO_s_file())) == NULL) {
24 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, ERR_R_BUF_LIB);
25 return 0;
26 }
27 BIO_set_fp(b, fp, BIO_NOCLOSE);
28 ret = ECPKParameters_print(b, x, off);
29 BIO_free(b);
30 return ret;
31}
32
33int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
34{
35 BIO *b;
36 int ret;
37
38 if ((b = BIO_new(BIO_s_file())) == NULL) {
39 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
40 return 0;
41 }
42 BIO_set_fp(b, fp, BIO_NOCLOSE);
43 ret = EC_KEY_print(b, x, off);
44 BIO_free(b);
45 return ret;
46}
47
48int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
49{
50 BIO *b;
51 int ret;
52
53 if ((b = BIO_new(BIO_s_file())) == NULL) {
54 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
55 return 0;
56 }
57 BIO_set_fp(b, fp, BIO_NOCLOSE);
58 ret = ECParameters_print(b, x);
59 BIO_free(b);
60 return ret;
61}
62#endif
63
64static int print_bin(BIO *fp, const char *str, const unsigned char *num,
65 size_t len, int off);
66
67int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
68{
69 int ret = 0, reason = ERR_R_BIO_LIB;
70 BN_CTX *ctx = NULL;
71 const EC_POINT *point = NULL;
72 BIGNUM *p = NULL, *a = NULL, *b = NULL, *gen = NULL;
73 const BIGNUM *order = NULL, *cofactor = NULL;
74 const unsigned char *seed;
75 size_t seed_len = 0;
76
77 static const char *gen_compressed = "Generator (compressed):";
78 static const char *gen_uncompressed = "Generator (uncompressed):";
79 static const char *gen_hybrid = "Generator (hybrid):";
80
81 if (!x) {
82 reason = ERR_R_PASSED_NULL_PARAMETER;
83 goto err;
84 }
85
86 ctx = BN_CTX_new();
87 if (ctx == NULL) {
88 reason = ERR_R_MALLOC_FAILURE;
89 goto err;
90 }
91
92 if (EC_GROUP_get_asn1_flag(x)) {
93 /* the curve parameter are given by an asn1 OID */
94 int nid;
95 const char *nname;
96
97 if (!BIO_indent(bp, off, 128))
98 goto err;
99
100 nid = EC_GROUP_get_curve_name(x);
101 if (nid == 0)
102 goto err;
103 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
104 goto err;
105 if (BIO_printf(bp, "\n") <= 0)
106 goto err;
107 nname = EC_curve_nid2nist(nid);
108 if (nname) {
109 if (!BIO_indent(bp, off, 128))
110 goto err;
111 if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
112 goto err;
113 }
114 } else {
115 /* explicit parameters */
116 int is_char_two = 0;
117 point_conversion_form_t form;
118 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
119
120 if (tmp_nid == NID_X9_62_characteristic_two_field)
121 is_char_two = 1;
122
123 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
124 (b = BN_new()) == NULL) {
125 reason = ERR_R_MALLOC_FAILURE;
126 goto err;
127 }
128
129 if (!EC_GROUP_get_curve(x, p, a, b, ctx)) {
130 reason = ERR_R_EC_LIB;
131 goto err;
132 }
133
134 if ((point = EC_GROUP_get0_generator(x)) == NULL) {
135 reason = ERR_R_EC_LIB;
136 goto err;
137 }
138 order = EC_GROUP_get0_order(x);
139 cofactor = EC_GROUP_get0_cofactor(x);
140 if (order == NULL) {
141 reason = ERR_R_EC_LIB;
142 goto err;
143 }
144
145 form = EC_GROUP_get_point_conversion_form(x);
146
147 if ((gen = EC_POINT_point2bn(x, point, form, NULL, ctx)) == NULL) {
148 reason = ERR_R_EC_LIB;
149 goto err;
150 }
151
152 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
153 seed_len = EC_GROUP_get_seed_len(x);
154
155 if (!BIO_indent(bp, off, 128))
156 goto err;
157
158 /* print the 'short name' of the field type */
159 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
160 <= 0)
161 goto err;
162
163 if (is_char_two) {
164 /* print the 'short name' of the base type OID */
165 int basis_type = EC_GROUP_get_basis_type(x);
166 if (basis_type == 0)
167 goto err;
168
169 if (!BIO_indent(bp, off, 128))
170 goto err;
171
172 if (BIO_printf(bp, "Basis Type: %s\n",
173 OBJ_nid2sn(basis_type)) <= 0)
174 goto err;
175
176 /* print the polynomial */
177 if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
178 off))
179 goto err;
180 } else {
181 if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
182 goto err;
183 }
184 if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, NULL, off))
185 goto err;
186 if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, NULL, off))
187 goto err;
188 if (form == POINT_CONVERSION_COMPRESSED) {
189 if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
190 NULL, off))
191 goto err;
192 } else if (form == POINT_CONVERSION_UNCOMPRESSED) {
193 if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
194 NULL, off))
195 goto err;
196 } else { /* form == POINT_CONVERSION_HYBRID */
197
198 if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
199 NULL, off))
200 goto err;
201 }
202 if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
203 NULL, off))
204 goto err;
205 if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
206 NULL, off))
207 goto err;
208 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
209 goto err;
210 }
211 ret = 1;
212 err:
213 if (!ret)
214 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
215 BN_free(p);
216 BN_free(a);
217 BN_free(b);
218 BN_free(gen);
219 BN_CTX_free(ctx);
220 return ret;
221}
222
223static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
224 size_t len, int off)
225{
226 size_t i;
227 char str[128 + 1 + 4];
228
229 if (buf == NULL)
230 return 1;
231 if (off > 0) {
232 if (off > 128)
233 off = 128;
234 memset(str, ' ', off);
235 if (BIO_write(fp, str, off) <= 0)
236 return 0;
237 } else {
238 off = 0;
239 }
240
241 if (BIO_printf(fp, "%s", name) <= 0)
242 return 0;
243
244 for (i = 0; i < len; i++) {
245 if ((i % 15) == 0) {
246 str[0] = '\n';
247 memset(&(str[1]), ' ', off + 4);
248 if (BIO_write(fp, str, off + 1 + 4) <= 0)
249 return 0;
250 }
251 if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
252 0)
253 return 0;
254 }
255 if (BIO_write(fp, "\n", 1) <= 0)
256 return 0;
257
258 return 1;
259}
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