x_pkey.c revision 325337 
1/* crypto/asn1/x_pkey.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to.  The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 *    notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 *    notice, this list of conditions and the following disclaimer in the
30 *    documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 *    must display the following acknowledgement:
33 *    "This product includes cryptographic software written by
34 *     Eric Young (eay@cryptsoft.com)"
35 *    The word 'cryptographic' can be left out if the rouines from the library
36 *    being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 *    the apps directory (application code) you must include an acknowledgement:
39 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed.  i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/evp.h>
62#include <openssl/objects.h>
63#include <openssl/asn1_mac.h>
64#include <openssl/x509.h>
65
66/* need to implement */
67int i2d_X509_PKEY(X509_PKEY *a, unsigned char **pp)
68{
69    return (0);
70}
71
72X509_PKEY *d2i_X509_PKEY(X509_PKEY **a, const unsigned char **pp, long length)
73{
74    int i;
75    M_ASN1_D2I_vars(a, X509_PKEY *, X509_PKEY_new);
76
77    M_ASN1_D2I_Init();
78    M_ASN1_D2I_start_sequence();
79    M_ASN1_D2I_get_x(X509_ALGOR, ret->enc_algor, d2i_X509_ALGOR);
80    M_ASN1_D2I_get_x(ASN1_OCTET_STRING, ret->enc_pkey, d2i_ASN1_OCTET_STRING);
81
82    ret->cipher.cipher =
83        EVP_get_cipherbyname(OBJ_nid2ln
84                             (OBJ_obj2nid(ret->enc_algor->algorithm)));
85    if (ret->cipher.cipher == NULL) {
86        c.error = ASN1_R_UNSUPPORTED_CIPHER;
87        c.line = __LINE__;
88        goto err;
89    }
90    if (ret->enc_algor->parameter->type == V_ASN1_OCTET_STRING) {
91        i = ret->enc_algor->parameter->value.octet_string->length;
92        if (i > EVP_MAX_IV_LENGTH) {
93            c.error = ASN1_R_IV_TOO_LARGE;
94            c.line = __LINE__;
95            goto err;
96        }
97        memcpy(ret->cipher.iv,
98               ret->enc_algor->parameter->value.octet_string->data, i);
99    } else
100        memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);
101    M_ASN1_D2I_Finish(a, X509_PKEY_free, ASN1_F_D2I_X509_PKEY);
102}
103
104X509_PKEY *X509_PKEY_new(void)
105{
106    X509_PKEY *ret = NULL;
107    ASN1_CTX c;
108
109    ret = OPENSSL_malloc(sizeof(X509_PKEY));
110    if (ret == NULL) {
111        c.line = __LINE__;
112        goto err;
113    }
114    ret->version = 0;
115    ret->enc_algor = X509_ALGOR_new();
116    ret->enc_pkey = M_ASN1_OCTET_STRING_new();
117    ret->dec_pkey = NULL;
118    ret->key_length = 0;
119    ret->key_data = NULL;
120    ret->key_free = 0;
121    ret->cipher.cipher = NULL;
122    memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);
123    ret->references = 1;
124    if (ret->enc_algor == NULL || ret->enc_pkey == NULL) {
125        c.line = __LINE__;
126        goto err;
127    }
128    return ret;
129err:
130    X509_PKEY_free(ret);
131    ASN1_MAC_H_err(ASN1_F_X509_PKEY_NEW, ERR_R_MALLOC_FAILURE, c.line);
132    return NULL;
133}
134
135void X509_PKEY_free(X509_PKEY *x)
136{
137    int i;
138
139    if (x == NULL)
140        return;
141
142    i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_X509_PKEY);
143#ifdef REF_PRINT
144    REF_PRINT("X509_PKEY", x);
145#endif
146    if (i > 0)
147        return;
148#ifdef REF_CHECK
149    if (i < 0) {
150        fprintf(stderr, "X509_PKEY_free, bad reference count\n");
151        abort();
152    }
153#endif
154
155    if (x->enc_algor != NULL)
156        X509_ALGOR_free(x->enc_algor);
157    if (x->enc_pkey != NULL)
158        M_ASN1_OCTET_STRING_free(x->enc_pkey);
159    if (x->dec_pkey != NULL)
160        EVP_PKEY_free(x->dec_pkey);
161    if ((x->key_data != NULL) && (x->key_free))
162        OPENSSL_free(x->key_data);
163    OPENSSL_free(x);
164}
165