1 /* $OpenBSD: p8_pkey.c,v 1.20 2021/11/01 20:53:08 tb Exp $ */
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 <string.h>
61
62 #include <openssl/asn1t.h>
63 #include <openssl/x509.h>
64
65 #include "x509_lcl.h"
66
67 /* Minor tweak to operation: zero private key data */
68 static int
pkey_cb(int operation,ASN1_VALUE ** pval,const ASN1_ITEM * it,void * exarg)69 pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
70 {
71 /* Since the structure must still be valid use ASN1_OP_FREE_PRE */
72 if (operation == ASN1_OP_FREE_PRE) {
73 PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval;
74 if (key->pkey != NULL)
75 explicit_bzero(key->pkey->data, key->pkey->length);
76 }
77 return 1;
78 }
79
80 static const ASN1_AUX PKCS8_PRIV_KEY_INFO_aux = {
81 .asn1_cb = pkey_cb,
82 };
83 static const ASN1_TEMPLATE PKCS8_PRIV_KEY_INFO_seq_tt[] = {
84 {
85 .offset = offsetof(PKCS8_PRIV_KEY_INFO, version),
86 .field_name = "version",
87 .item = &ASN1_INTEGER_it,
88 },
89 {
90 .offset = offsetof(PKCS8_PRIV_KEY_INFO, pkeyalg),
91 .field_name = "pkeyalg",
92 .item = &X509_ALGOR_it,
93 },
94 {
95 .offset = offsetof(PKCS8_PRIV_KEY_INFO, pkey),
96 .field_name = "pkey",
97 .item = &ASN1_OCTET_STRING_it,
98 },
99 {
100 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SET_OF | ASN1_TFLG_OPTIONAL,
101 .offset = offsetof(PKCS8_PRIV_KEY_INFO, attributes),
102 .field_name = "attributes",
103 .item = &X509_ATTRIBUTE_it,
104 },
105 };
106
107 const ASN1_ITEM PKCS8_PRIV_KEY_INFO_it = {
108 .itype = ASN1_ITYPE_SEQUENCE,
109 .utype = V_ASN1_SEQUENCE,
110 .templates = PKCS8_PRIV_KEY_INFO_seq_tt,
111 .tcount = sizeof(PKCS8_PRIV_KEY_INFO_seq_tt) / sizeof(ASN1_TEMPLATE),
112 .funcs = &PKCS8_PRIV_KEY_INFO_aux,
113 .size = sizeof(PKCS8_PRIV_KEY_INFO),
114 .sname = "PKCS8_PRIV_KEY_INFO",
115 };
116
117
118 PKCS8_PRIV_KEY_INFO *
d2i_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO ** a,const unsigned char ** in,long len)119 d2i_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO **a, const unsigned char **in, long len)
120 {
121 return (PKCS8_PRIV_KEY_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
122 &PKCS8_PRIV_KEY_INFO_it);
123 }
124
125 int
i2d_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO * a,unsigned char ** out)126 i2d_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO *a, unsigned char **out)
127 {
128 return ASN1_item_i2d((ASN1_VALUE *)a, out, &PKCS8_PRIV_KEY_INFO_it);
129 }
130
131 PKCS8_PRIV_KEY_INFO *
PKCS8_PRIV_KEY_INFO_new(void)132 PKCS8_PRIV_KEY_INFO_new(void)
133 {
134 return (PKCS8_PRIV_KEY_INFO *)ASN1_item_new(&PKCS8_PRIV_KEY_INFO_it);
135 }
136
137 void
PKCS8_PRIV_KEY_INFO_free(PKCS8_PRIV_KEY_INFO * a)138 PKCS8_PRIV_KEY_INFO_free(PKCS8_PRIV_KEY_INFO *a)
139 {
140 ASN1_item_free((ASN1_VALUE *)a, &PKCS8_PRIV_KEY_INFO_it);
141 }
142
143 int
PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO * priv,ASN1_OBJECT * aobj,int version,int ptype,void * pval,unsigned char * penc,int penclen)144 PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj, int version,
145 int ptype, void *pval, unsigned char *penc, int penclen)
146 {
147 if (version >= 0) {
148 if (!ASN1_INTEGER_set(priv->version, version))
149 return 0;
150 }
151 if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval))
152 return 0;
153 if (penc != NULL)
154 ASN1_STRING_set0(priv->pkey, penc, penclen);
155 return 1;
156 }
157
158 int
PKCS8_pkey_get0(const ASN1_OBJECT ** ppkalg,const unsigned char ** pk,int * ppklen,const X509_ALGOR ** pa,const PKCS8_PRIV_KEY_INFO * p8)159 PKCS8_pkey_get0(const ASN1_OBJECT **ppkalg, const unsigned char **pk,
160 int *ppklen, const X509_ALGOR **pa, const PKCS8_PRIV_KEY_INFO *p8)
161 {
162 if (ppkalg != NULL)
163 *ppkalg = p8->pkeyalg->algorithm;
164 if (pk != NULL) {
165 *pk = ASN1_STRING_data(p8->pkey);
166 *ppklen = ASN1_STRING_length(p8->pkey);
167 }
168 if (pa != NULL)
169 *pa = p8->pkeyalg;
170 return 1;
171 }
172
STACK_OF(X509_ATTRIBUTE)173 const STACK_OF(X509_ATTRIBUTE) *
174 PKCS8_pkey_get0_attrs(const PKCS8_PRIV_KEY_INFO *p8)
175 {
176 return p8->attributes;
177 }
178
179 int
PKCS8_pkey_add1_attr_by_NID(PKCS8_PRIV_KEY_INFO * p8,int nid,int type,const unsigned char * bytes,int len)180 PKCS8_pkey_add1_attr_by_NID(PKCS8_PRIV_KEY_INFO *p8, int nid, int type,
181 const unsigned char *bytes, int len)
182 {
183 if (X509at_add1_attr_by_NID(&p8->attributes, nid, type, bytes,
184 len) != NULL)
185 return 1;
186 return 0;
187 }
188
189