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 */
65static 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
78ASN1_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
85IMPLEMENT_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
86
87int 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
124int 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	}
155
156