/src/openssl111/crypto/ec/eck_prn.c

Source (jump to first uncovered line)
/*
 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
 *
 * Licensed under the OpenSSL license (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 <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/ec.h>
#include <openssl/bn.h>

#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) {
        ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, 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) {
        ECerr(EC_F_EC_KEY_PRINT_FP, 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) {
        ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
        return 0;
    }
    BIO_set_fp(b, fp, BIO_NOCLOSE);
    ret = ECParameters_print(b, x);
    BIO_free(b);
    return ret;
}
#endif

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, *gen = NULL;
    const BIGNUM *order = NULL, *cofactor = NULL;
    const unsigned char *seed;
    size_t seed_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 {
        /* explicit parameters */
        int is_char_two = 0;
        point_conversion_form_t form;
        int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(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);

        if ((gen = EC_POINT_point2bn(x, point, form, NULL, ctx)) == NULL) {
            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) {
            if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
                                                NULL, off))
                goto err;
        } else if (form == POINT_CONVERSION_UNCOMPRESSED) {
            if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
                                                NULL, off))
                goto err;
        } else {                /* form == POINT_CONVERSION_HYBRID */

            if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
                                                NULL, 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)
        ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
    BN_free(p);
    BN_free(a);
    BN_free(b);
    BN_free(gen);
    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;
}

Coverage Report

Created: 2023-09-25 06:42

Line	Count	Source (jump to first uncovered 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
18		int ECPKParameters_print_fp(FILE fp, const EC_GROUP x, int off)
19	0	{
20	0	BIO *b;
21	0	int ret;
22
23	0	if ((b = BIO_new(BIO_s_file())) == NULL) {
24	0	ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, ERR_R_BUF_LIB);
25	0	return 0;
26	0	}
27	0	BIO_set_fp(b, fp, BIO_NOCLOSE);
28	0	ret = ECPKParameters_print(b, x, off);
29	0	BIO_free(b);
30	0	return ret;
31	0	}
32
33		int EC_KEY_print_fp(FILE fp, const EC_KEY x, int off)
34	0	{
35	0	BIO *b;
36	0	int ret;
37
38	0	if ((b = BIO_new(BIO_s_file())) == NULL) {
39	0	ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
40	0	return 0;
41	0	}
42	0	BIO_set_fp(b, fp, BIO_NOCLOSE);
43	0	ret = EC_KEY_print(b, x, off);
44	0	BIO_free(b);
45	0	return ret;
46	0	}
47
48		int ECParameters_print_fp(FILE fp, const EC_KEY x)
49	0	{
50	0	BIO *b;
51	0	int ret;
52
53	0	if ((b = BIO_new(BIO_s_file())) == NULL) {
54	0	ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
55	0	return 0;
56	0	}
57	0	BIO_set_fp(b, fp, BIO_NOCLOSE);
58	0	ret = ECParameters_print(b, x);
59	0	BIO_free(b);
60	0	return ret;
61	0	}
62		#endif
63
64		static int print_bin(BIO fp, const char str, const unsigned char *num,
65		size_t len, int off);
66
67		int ECPKParameters_print(BIO bp, const EC_GROUP x, int off)
68	641	{
69	641	int ret = 0, reason = ERR_R_BIO_LIB;
70	641	BN_CTX *ctx = NULL;
71	641	const EC_POINT *point = NULL;
72	641	BIGNUM p = NULL, a = NULL, b = NULL, gen = NULL;
73	641	const BIGNUM order = NULL, cofactor = NULL;
74	641	const unsigned char *seed;
75	641	size_t seed_len = 0;
76
77	641	static const char *gen_compressed = "Generator (compressed):";
78	641	static const char *gen_uncompressed = "Generator (uncompressed):";
79	641	static const char *gen_hybrid = "Generator (hybrid):";
80
81	641	if (!x) {
82	0	reason = ERR_R_PASSED_NULL_PARAMETER;
83	0	goto err;
84	0	}
85
86	641	ctx = BN_CTX_new();
87	641	if (ctx == NULL) {
88	0	reason = ERR_R_MALLOC_FAILURE;
89	0	goto err;
90	0	}
91
92	641	if (EC_GROUP_get_asn1_flag(x)) {
93		/* the curve parameter are given by an asn1 OID */
94	512	int nid;
95	512	const char *nname;
96
97	512	if (!BIO_indent(bp, off, 128))
98	0	goto err;
99
100	512	nid = EC_GROUP_get_curve_name(x);
101	512	if (nid == 0)
102	0	goto err;
103	512	if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
104	0	goto err;
105	512	if (BIO_printf(bp, "\n") <= 0)
106	0	goto err;
107	512	nname = EC_curve_nid2nist(nid);
108	512	if (nname) {
109	221	if (!BIO_indent(bp, off, 128))
110	0	goto err;
111	221	if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
112	0	goto err;
113	221	}
114	512	} else {
115		/* explicit parameters */
116	129	int is_char_two = 0;
117	129	point_conversion_form_t form;
118	129	int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
119
120	129	if (tmp_nid == NID_X9_62_characteristic_two_field)
121	0	is_char_two = 1;
122
123	129	if ((p = BN_new()) == NULL \|\| (a = BN_new()) == NULL \|\|
124	129	(b = BN_new()) == NULL) {
125	0	reason = ERR_R_MALLOC_FAILURE;
126	0	goto err;
127	0	}
128
129	129	if (!EC_GROUP_get_curve(x, p, a, b, ctx)) {
130	0	reason = ERR_R_EC_LIB;
131	0	goto err;
132	0	}
133
134	129	if ((point = EC_GROUP_get0_generator(x)) == NULL) {
135	0	reason = ERR_R_EC_LIB;
136	0	goto err;
137	0	}
138	129	order = EC_GROUP_get0_order(x);
139	129	cofactor = EC_GROUP_get0_cofactor(x);
140	129	if (order == NULL) {
141	0	reason = ERR_R_EC_LIB;
142	0	goto err;
143	0	}
144
145	129	form = EC_GROUP_get_point_conversion_form(x);
146
147	129	if ((gen = EC_POINT_point2bn(x, point, form, NULL, ctx)) == NULL) {
148	0	reason = ERR_R_EC_LIB;
149	0	goto err;
150	0	}
151
152	129	if ((seed = EC_GROUP_get0_seed(x)) != NULL)
153	34	seed_len = EC_GROUP_get_seed_len(x);
154
155	129	if (!BIO_indent(bp, off, 128))
156	0	goto err;
157
158		/* print the 'short name' of the field type */
159	129	if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
160	129	<= 0)
161	0	goto err;
162
163	129	if (is_char_two) {
164		/* print the 'short name' of the base type OID */
165	0	int basis_type = EC_GROUP_get_basis_type(x);
166	0	if (basis_type == 0)
167	0	goto err;
168
169	0	if (!BIO_indent(bp, off, 128))
170	0	goto err;
171
172	0	if (BIO_printf(bp, "Basis Type: %s\n",
173	0	OBJ_nid2sn(basis_type)) <= 0)
174	0	goto err;
175
176		/* print the polynomial */
177	0	if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
178	0	off))
179	0	goto err;
180	129	} else {
181	129	if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
182	0	goto err;
183	129	}
184	129	if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, NULL, off))
185	0	goto err;
186	129	if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, NULL, off))
187	0	goto err;
188	129	if (form == POINT_CONVERSION_COMPRESSED) {
189	123	if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
190	123	NULL, off))
191	0	goto err;
192	123	} else if (form == POINT_CONVERSION_UNCOMPRESSED) {
193	4	if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
194	4	NULL, off))
195	0	goto err;
196	4	} else { /* form == POINT_CONVERSION_HYBRID */
197
198	2	if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
199	2	NULL, off))
200	0	goto err;
201	2	}
202	129	if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
203	129	NULL, off))
204	0	goto err;
205	129	if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
206	129	NULL, off))
207	0	goto err;
208	129	if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
209	0	goto err;
210	129	}
211	641	ret = 1;
212	641	err:
213	641	if (!ret)
214	641	ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
215	641	BN_free(p);
216	641	BN_free(a);
217	641	BN_free(b);
218	641	BN_free(gen);
219	641	BN_CTX_free(ctx);
220	641	return ret;
221	641	}
222
223		static int print_bin(BIO fp, const char name, const unsigned char *buf,
224		size_t len, int off)
225	34	{
226	34	size_t i;
227	34	char str[128 + 1 + 4];
228
229	34	if (buf == NULL)
230	0	return 1;
231	34	if (off > 0) {
232	12	if (off > 128)
233	0	off = 128;
234	12	memset(str, ' ', off);
235	12	if (BIO_write(fp, str, off) <= 0)
236	0	return 0;
237	22	} else {
238	22	off = 0;
239	22	}
240
241	34	if (BIO_printf(fp, "%s", name) <= 0)
242	0	return 0;
243
244	714	for (i = 0; i < len; i++) {
245	680	if ((i % 15) == 0) {
246	68	str[0] = '\n';
247	68	memset(&(str[1]), ' ', off + 4);
248	68	if (BIO_write(fp, str, off + 1 + 4) <= 0)
249	0	return 0;
250	68	}
251	680	if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
252	680	0)
253	0	return 0;
254	680	}
255	34	if (BIO_write(fp, "\n", 1) <= 0)
256	0	return 0;
257
258	34	return 1;
259	34	}