/src/openssl30/crypto/ec/eck_prn.c

Source (jump to first uncovered line)
/*
 * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include "internal/deprecated.h"

#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/ec.h>
#include <openssl/bn.h>

#ifndef OPENSSL_NO_DEPRECATED_3_0
# ifndef OPENSSL_NO_STDIO
int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
{
    BIO *b;
    int ret;

    if ((b = BIO_new(BIO_s_file())) == NULL) {
        ERR_raise(ERR_LIB_EC, ERR_R_BUF_LIB);
        return 0;
    }
    BIO_set_fp(b, fp, BIO_NOCLOSE);
    ret = ECPKParameters_print(b, x, off);
    BIO_free(b);
    return ret;
}

int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
{
    BIO *b;
    int ret;

    if ((b = BIO_new(BIO_s_file())) == NULL) {
        ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB);
        return 0;
    }
    BIO_set_fp(b, fp, BIO_NOCLOSE);
    ret = EC_KEY_print(b, x, off);
    BIO_free(b);
    return ret;
}

int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
{
    BIO *b;
    int ret;

    if ((b = BIO_new(BIO_s_file())) == NULL) {
        ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB);
        return 0;
    }
    BIO_set_fp(b, fp, BIO_NOCLOSE);
    ret = ECParameters_print(b, x);
    BIO_free(b);
    return ret;
}
#endif /* OPENSSL_NO_STDIO */

static int print_bin(BIO *fp, const char *str, const unsigned char *num,
                     size_t len, int off);

int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
{
    int ret = 0, reason = ERR_R_BIO_LIB;
    BN_CTX *ctx = NULL;
    const EC_POINT *point = NULL;
    BIGNUM *p = NULL, *a = NULL, *b = NULL;
    unsigned char *gen_buf = NULL;
    const BIGNUM *order = NULL, *cofactor = NULL;
    const unsigned char *seed;
    size_t seed_len = 0, gen_buf_len = 0;

    static const char *gen_compressed = "Generator (compressed):";
    static const char *gen_uncompressed = "Generator (uncompressed):";
    static const char *gen_hybrid = "Generator (hybrid):";

    if (!x) {
        reason = ERR_R_PASSED_NULL_PARAMETER;
        goto err;
    }

    ctx = BN_CTX_new();
    if (ctx == NULL) {
        reason = ERR_R_MALLOC_FAILURE;
        goto err;
    }

    if (EC_GROUP_get_asn1_flag(x)) {
        /* the curve parameter are given by an asn1 OID */
        int nid;
        const char *nname;

        if (!BIO_indent(bp, off, 128))
            goto err;

        nid = EC_GROUP_get_curve_name(x);
        if (nid == 0)
            goto err;
        if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
            goto err;
        if (BIO_printf(bp, "\n") <= 0)
            goto err;
        nname = EC_curve_nid2nist(nid);
        if (nname) {
            if (!BIO_indent(bp, off, 128))
                goto err;
            if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
                goto err;
        }
    } else {
        const char *form_str;
        /* explicit parameters */
        int is_char_two = 0;
        point_conversion_form_t form;
        int tmp_nid = EC_GROUP_get_field_type(x);

        if (tmp_nid == NID_X9_62_characteristic_two_field)
            is_char_two = 1;

        if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
            (b = BN_new()) == NULL) {
            reason = ERR_R_MALLOC_FAILURE;
            goto err;
        }

        if (!EC_GROUP_get_curve(x, p, a, b, ctx)) {
            reason = ERR_R_EC_LIB;
            goto err;
        }

        if ((point = EC_GROUP_get0_generator(x)) == NULL) {
            reason = ERR_R_EC_LIB;
            goto err;
        }
        order = EC_GROUP_get0_order(x);
        cofactor = EC_GROUP_get0_cofactor(x);
        if (order == NULL) {
            reason = ERR_R_EC_LIB;
            goto err;
        }

        form = EC_GROUP_get_point_conversion_form(x);

        gen_buf_len = EC_POINT_point2buf(x, point, form, &gen_buf, ctx);
        if (gen_buf_len == 0) {
            reason = ERR_R_EC_LIB;
            goto err;
        }

        if ((seed = EC_GROUP_get0_seed(x)) != NULL)
            seed_len = EC_GROUP_get_seed_len(x);

        if (!BIO_indent(bp, off, 128))
            goto err;

        /* print the 'short name' of the field type */
        if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
            <= 0)
            goto err;

        if (is_char_two) {
            /* print the 'short name' of the base type OID */
            int basis_type = EC_GROUP_get_basis_type(x);
            if (basis_type == 0)
                goto err;

            if (!BIO_indent(bp, off, 128))
                goto err;

            if (BIO_printf(bp, "Basis Type: %s\n",
                           OBJ_nid2sn(basis_type)) <= 0)
                goto err;

            /* print the polynomial */
            if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
                                              off))
                goto err;
        } else {
            if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
                goto err;
        }
        if ((a != NULL) && !ASN1_bn_print(bp, "A:   ", a, NULL, off))
            goto err;
        if ((b != NULL) && !ASN1_bn_print(bp, "B:   ", b, NULL, off))
            goto err;

        if (form == POINT_CONVERSION_COMPRESSED)
            form_str = gen_compressed;
        else if (form == POINT_CONVERSION_UNCOMPRESSED)
            form_str = gen_uncompressed;
        else
            form_str = gen_hybrid;
        if (gen_buf != NULL
            && !print_bin(bp, form_str, gen_buf, gen_buf_len, off))
            goto err;

        if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order, NULL, off))
            goto err;
        if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
                                                 NULL, off))
            goto err;
        if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
            goto err;
    }
    ret = 1;
 err:
    if (!ret)
        ERR_raise(ERR_LIB_EC, reason);
    BN_free(p);
    BN_free(a);
    BN_free(b);
    OPENSSL_clear_free(gen_buf, gen_buf_len);
    BN_CTX_free(ctx);
    return ret;
}

static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
                     size_t len, int off)
{
    size_t i;
    char str[128 + 1 + 4];

    if (buf == NULL)
        return 1;
    if (off > 0) {
        if (off > 128)
            off = 128;
        memset(str, ' ', off);
        if (BIO_write(fp, str, off) <= 0)
            return 0;
    } else {
        off = 0;
    }

    if (BIO_printf(fp, "%s", name) <= 0)
        return 0;

    for (i = 0; i < len; i++) {
        if ((i % 15) == 0) {
            str[0] = '\n';
            memset(&(str[1]), ' ', off + 4);
            if (BIO_write(fp, str, off + 1 + 4) <= 0)
                return 0;
        }
        if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
            0)
            return 0;
    }
    if (BIO_write(fp, "\n", 1) <= 0)
        return 0;

    return 1;
}
#endif /* OPENSSL_NO_DEPRECATED_3_0 */

Coverage Report

Created: 2025-06-13 06:58

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
3		* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4		*
5		* Licensed under the Apache License 2.0 (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 "internal/deprecated.h"
12
13		#include <stdio.h>
14		#include "internal/cryptlib.h"
15		#include <openssl/evp.h>
16		#include <openssl/ec.h>
17		#include <openssl/bn.h>
18
19		#ifndef OPENSSL_NO_DEPRECATED_3_0
20		# ifndef OPENSSL_NO_STDIO
21		int ECPKParameters_print_fp(FILE fp, const EC_GROUP x, int off)
22	0	{
23	0	BIO *b;
24	0	int ret;
25
26	0	if ((b = BIO_new(BIO_s_file())) == NULL) {
27	0	ERR_raise(ERR_LIB_EC, ERR_R_BUF_LIB);
28	0	return 0;
29	0	}
30	0	BIO_set_fp(b, fp, BIO_NOCLOSE);
31	0	ret = ECPKParameters_print(b, x, off);
32	0	BIO_free(b);
33	0	return ret;
34	0	}
35
36		int EC_KEY_print_fp(FILE fp, const EC_KEY x, int off)
37	0	{
38	0	BIO *b;
39	0	int ret;
40
41	0	if ((b = BIO_new(BIO_s_file())) == NULL) {
42	0	ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB);
43	0	return 0;
44	0	}
45	0	BIO_set_fp(b, fp, BIO_NOCLOSE);
46	0	ret = EC_KEY_print(b, x, off);
47	0	BIO_free(b);
48	0	return ret;
49	0	}
50
51		int ECParameters_print_fp(FILE fp, const EC_KEY x)
52	0	{
53	0	BIO *b;
54	0	int ret;
55
56	0	if ((b = BIO_new(BIO_s_file())) == NULL) {
57	0	ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB);
58	0	return 0;
59	0	}
60	0	BIO_set_fp(b, fp, BIO_NOCLOSE);
61	0	ret = ECParameters_print(b, x);
62	0	BIO_free(b);
63	0	return ret;
64	0	}
65		#endif /* OPENSSL_NO_STDIO */
66
67		static int print_bin(BIO fp, const char str, const unsigned char *num,
68		size_t len, int off);
69
70		int ECPKParameters_print(BIO bp, const EC_GROUP x, int off)
71	2.89k	{
72	2.89k	int ret = 0, reason = ERR_R_BIO_LIB;
73	2.89k	BN_CTX *ctx = NULL;
74	2.89k	const EC_POINT *point = NULL;
75	2.89k	BIGNUM p = NULL, a = NULL, *b = NULL;
76	2.89k	unsigned char *gen_buf = NULL;
77	2.89k	const BIGNUM order = NULL, cofactor = NULL;
78	2.89k	const unsigned char *seed;
79	2.89k	size_t seed_len = 0, gen_buf_len = 0;
80
81	2.89k	static const char *gen_compressed = "Generator (compressed):";
82	2.89k	static const char *gen_uncompressed = "Generator (uncompressed):";
83	2.89k	static const char *gen_hybrid = "Generator (hybrid):";
84
85	2.89k	if (!x) {
86	0	reason = ERR_R_PASSED_NULL_PARAMETER;
87	0	goto err;
88	0	}
89
90	2.89k	ctx = BN_CTX_new();
91	2.89k	if (ctx == NULL) {
92	0	reason = ERR_R_MALLOC_FAILURE;
93	0	goto err;
94	0	}
95
96	2.89k	if (EC_GROUP_get_asn1_flag(x)) {
97		/* the curve parameter are given by an asn1 OID */
98	2.36k	int nid;
99	2.36k	const char *nname;
100
101	2.36k	if (!BIO_indent(bp, off, 128))
102	0	goto err;
103
104	2.36k	nid = EC_GROUP_get_curve_name(x);
105	2.36k	if (nid == 0)
106	0	goto err;
107	2.36k	if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
108	0	goto err;
109	2.36k	if (BIO_printf(bp, "\n") <= 0)
110	0	goto err;
111	2.36k	nname = EC_curve_nid2nist(nid);
112	2.36k	if (nname) {
113	1.02k	if (!BIO_indent(bp, off, 128))
114	0	goto err;
115	1.02k	if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
116	0	goto err;
117	1.02k	}
118	2.36k	} else {
119	528	const char *form_str;
120		/* explicit parameters */
121	528	int is_char_two = 0;
122	528	point_conversion_form_t form;
123	528	int tmp_nid = EC_GROUP_get_field_type(x);
124
125	528	if (tmp_nid == NID_X9_62_characteristic_two_field)
126	0	is_char_two = 1;
127
128	528	if ((p = BN_new()) == NULL \|\| (a = BN_new()) == NULL \|\|
129	528	(b = BN_new()) == NULL) {
130	0	reason = ERR_R_MALLOC_FAILURE;
131	0	goto err;
132	0	}
133
134	528	if (!EC_GROUP_get_curve(x, p, a, b, ctx)) {
135	0	reason = ERR_R_EC_LIB;
136	0	goto err;
137	0	}
138
139	528	if ((point = EC_GROUP_get0_generator(x)) == NULL) {
140	0	reason = ERR_R_EC_LIB;
141	0	goto err;
142	0	}
143	528	order = EC_GROUP_get0_order(x);
144	528	cofactor = EC_GROUP_get0_cofactor(x);
145	528	if (order == NULL) {
146	0	reason = ERR_R_EC_LIB;
147	0	goto err;
148	0	}
149
150	528	form = EC_GROUP_get_point_conversion_form(x);
151
152	528	gen_buf_len = EC_POINT_point2buf(x, point, form, &gen_buf, ctx);
153	528	if (gen_buf_len == 0) {
154	0	reason = ERR_R_EC_LIB;
155	0	goto err;
156	0	}
157
158	528	if ((seed = EC_GROUP_get0_seed(x)) != NULL)
159	122	seed_len = EC_GROUP_get_seed_len(x);
160
161	528	if (!BIO_indent(bp, off, 128))
162	0	goto err;
163
164		/* print the 'short name' of the field type */
165	528	if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
166	528	<= 0)
167	0	goto err;
168
169	528	if (is_char_two) {
170		/* print the 'short name' of the base type OID */
171	0	int basis_type = EC_GROUP_get_basis_type(x);
172	0	if (basis_type == 0)
173	0	goto err;
174
175	0	if (!BIO_indent(bp, off, 128))
176	0	goto err;
177
178	0	if (BIO_printf(bp, "Basis Type: %s\n",
179	0	OBJ_nid2sn(basis_type)) <= 0)
180	0	goto err;
181
182		/* print the polynomial */
183	0	if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
184	0	off))
185	0	goto err;
186	528	} else {
187	528	if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
188	0	goto err;
189	528	}
190	528	if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, NULL, off))
191	0	goto err;
192	528	if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, NULL, off))
193	0	goto err;
194
195	528	if (form == POINT_CONVERSION_COMPRESSED)
196	470	form_str = gen_compressed;
197	58	else if (form == POINT_CONVERSION_UNCOMPRESSED)
198	47	form_str = gen_uncompressed;
199	11	else
200	11	form_str = gen_hybrid;
201	528	if (gen_buf != NULL
202	528	&& !print_bin(bp, form_str, gen_buf, gen_buf_len, off))
203	0	goto err;
204
205	528	if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order, NULL, off))
206	0	goto err;
207	528	if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
208	528	NULL, off))
209	0	goto err;
210	528	if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
211	0	goto err;
212	528	}
213	2.89k	ret = 1;
214	2.89k	err:
215	2.89k	if (!ret)
216	2.89k	ERR_raise(ERR_LIB_EC, reason);
217	2.89k	BN_free(p);
218	2.89k	BN_free(a);
219	2.89k	BN_free(b);
220	2.89k	OPENSSL_clear_free(gen_buf, gen_buf_len);
221	2.89k	BN_CTX_free(ctx);
222	2.89k	return ret;
223	2.89k	}
224
225		static int print_bin(BIO fp, const char name, const unsigned char *buf,
226		size_t len, int off)
227	650	{
228	650	size_t i;
229	650	char str[128 + 1 + 4];
230
231	650	if (buf == NULL)
232	0	return 1;
233	650	if (off > 0) {
234	134	if (off > 128)
235	0	off = 128;
236	134	memset(str, ' ', off);
237	134	if (BIO_write(fp, str, off) <= 0)
238	0	return 0;
239	516	} else {
240	516	off = 0;
241	516	}
242
243	650	if (BIO_printf(fp, "%s", name) <= 0)
244	0	return 0;
245
246	20.8k	for (i = 0; i < len; i++) {
247	20.2k	if ((i % 15) == 0) {
248	1.48k	str[0] = '\n';
249	1.48k	memset(&(str[1]), ' ', off + 4);
250	1.48k	if (BIO_write(fp, str, off + 1 + 4) <= 0)
251	0	return 0;
252	1.48k	}
253	20.2k	if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
254	20.2k	0)
255	0	return 0;
256	20.2k	}
257	650	if (BIO_write(fp, "\n", 1) <= 0)
258	0	return 0;
259
260	650	return 1;
261	650	}
262		#endif /* OPENSSL_NO_DEPRECATED_3_0 */