1 /* p8_pkey.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 1999.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63
64 /* Minor tweak to operation: zero private key data */
65 static int pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
66 void *exarg)
67 {
68 /* Since the structure must still be valid use ASN1_OP_FREE_PRE */
69 if(operation == ASN1_OP_FREE_PRE) {
70 PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval;
71 if (key->pkey->value.octet_string)
72 OPENSSL_cleanse(key->pkey->value.octet_string->data,
73 key->pkey->value.octet_string->length);
74 }
75 return 1;
76 }
77
78 ASN1_SEQUENCE_cb(PKCS8_PRIV_KEY_INFO, pkey_cb) = {
79 ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, version, ASN1_INTEGER),
80 ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkeyalg, X509_ALGOR),
81 ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkey, ASN1_ANY),
82 ASN1_IMP_SET_OF_OPT(PKCS8_PRIV_KEY_INFO, attributes, X509_ATTRIBUTE, 0)
83 } ASN1_SEQUENCE_END_cb(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
84
85 IMPLEMENT_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
86
87 int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj,
88 int version,
89 int ptype, void *pval,
90 unsigned char *penc, int penclen)
91 {
92 unsigned char **ppenc = NULL;
93 if (version >= 0)
94 {
95 if (!ASN1_INTEGER_set(priv->version, version))
96 return 0;
97 }
98 if (penc)
99 {
100 int pmtype;
101 ASN1_OCTET_STRING *oct;
102 oct = ASN1_OCTET_STRING_new();
103 if (!oct)
104 return 0;
105 oct->data = penc;
106 ppenc = &oct->data;
107 oct->length = penclen;
108 if (priv->broken == PKCS8_NO_OCTET)
109 pmtype = V_ASN1_SEQUENCE;
110 else
111 pmtype = V_ASN1_OCTET_STRING;
112 ASN1_TYPE_set(priv->pkey, pmtype, oct);
113 }
114 if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval))
115 {
116 /* If call fails do not swallow 'enc' */
117 if (ppenc)
118 *ppenc = NULL;
119 return 0;
120 }
121 return 1;
122 }
123
124 int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
125 const unsigned char **pk, int *ppklen,
126 X509_ALGOR **pa,
127 PKCS8_PRIV_KEY_INFO *p8)
128 {
129 if (ppkalg)
130 *ppkalg = p8->pkeyalg->algorithm;
131 if(p8->pkey->type == V_ASN1_OCTET_STRING)
132 {
133 p8->broken = PKCS8_OK;
134 if (pk)
135 {
136 *pk = p8->pkey->value.octet_string->data;
137 *ppklen = p8->pkey->value.octet_string->length;
138 }
139 }
140 else if (p8->pkey->type == V_ASN1_SEQUENCE)
141 {
142 p8->broken = PKCS8_NO_OCTET;
143 if (pk)
144 {
145 *pk = p8->pkey->value.sequence->data;
146 *ppklen = p8->pkey->value.sequence->length;
147 }
148 }
149 else
150 return 0;
151 if (pa)
152 *pa = p8->pkeyalg;
153 return 1;
154 }