Branch data Line data Source code
1 : : /* crypto/asn1/d2i_pr.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/bn.h>
62 : : #include <openssl/evp.h>
63 : : #include <openssl/objects.h>
64 : : #ifndef OPENSSL_NO_ENGINE
65 : : #include <openssl/engine.h>
66 : : #endif
67 : : #include <openssl/x509.h>
68 : : #include <openssl/asn1.h>
69 : : #include "asn1_locl.h"
70 : :
71 : 28 : EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
72 : : long length)
73 : : {
74 : : EVP_PKEY *ret;
75 : :
76 [ - + ][ # # ]: 28 : if ((a == NULL) || (*a == NULL))
77 : : {
78 [ - + ]: 28 : if ((ret=EVP_PKEY_new()) == NULL)
79 : : {
80 : 0 : ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_EVP_LIB);
81 : 0 : return(NULL);
82 : : }
83 : : }
84 : : else
85 : : {
86 : 0 : ret= *a;
87 : : #ifndef OPENSSL_NO_ENGINE
88 [ # # ]: 0 : if (ret->engine)
89 : : {
90 : 0 : ENGINE_finish(ret->engine);
91 : 0 : ret->engine = NULL;
92 : : }
93 : : #endif
94 : : }
95 : :
96 [ - + ]: 28 : if (!EVP_PKEY_set_type(ret, type))
97 : : {
98 : 0 : ASN1err(ASN1_F_D2I_PRIVATEKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
99 : 0 : goto err;
100 : : }
101 : :
102 [ + - - + ]: 56 : if (!ret->ameth->old_priv_decode ||
103 : 28 : !ret->ameth->old_priv_decode(ret, pp, length))
104 : : {
105 [ # # ]: 0 : if (ret->ameth->priv_decode)
106 : : {
107 : 0 : PKCS8_PRIV_KEY_INFO *p8=NULL;
108 : 0 : p8=d2i_PKCS8_PRIV_KEY_INFO(NULL,pp,length);
109 [ # # ]: 0 : if (!p8) goto err;
110 : 0 : EVP_PKEY_free(ret);
111 : 0 : ret = EVP_PKCS82PKEY(p8);
112 : 0 : PKCS8_PRIV_KEY_INFO_free(p8);
113 : :
114 : : }
115 : : else
116 : : {
117 : 0 : ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB);
118 : 0 : goto err;
119 : : }
120 : : }
121 [ - + ]: 28 : if (a != NULL) (*a)=ret;
122 : 28 : return(ret);
123 : : err:
124 [ # # ][ # # ]: 0 : if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret);
[ # # ]
125 : : return(NULL);
126 : : }
127 : :
128 : : /* This works like d2i_PrivateKey() except it automatically works out the type */
129 : :
130 : 2 : EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
131 : : long length)
132 : : {
133 : : STACK_OF(ASN1_TYPE) *inkey;
134 : : const unsigned char *p;
135 : : int keytype;
136 : 2 : p = *pp;
137 : : /* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE):
138 : : * by analyzing it we can determine the passed structure: this
139 : : * assumes the input is surrounded by an ASN1 SEQUENCE.
140 : : */
141 : 2 : inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, length);
142 : : /* Since we only need to discern "traditional format" RSA and DSA
143 : : * keys we can just count the elements.
144 : : */
145 [ + - ]: 2 : if(sk_ASN1_TYPE_num(inkey) == 6)
146 : : keytype = EVP_PKEY_DSA;
147 [ + - ]: 2 : else if (sk_ASN1_TYPE_num(inkey) == 4)
148 : : keytype = EVP_PKEY_EC;
149 [ - + ]: 2 : else if (sk_ASN1_TYPE_num(inkey) == 3)
150 : : { /* This seems to be PKCS8, not traditional format */
151 : 0 : PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL,pp,length);
152 : : EVP_PKEY *ret;
153 : :
154 : 0 : sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
155 [ # # ]: 0 : if (!p8)
156 : : {
157 : 0 : ASN1err(ASN1_F_D2I_AUTOPRIVATEKEY,ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
158 : 0 : return NULL;
159 : : }
160 : 0 : ret = EVP_PKCS82PKEY(p8);
161 : 0 : PKCS8_PRIV_KEY_INFO_free(p8);
162 [ # # ]: 0 : if (a) {
163 : 0 : *a = ret;
164 : : }
165 : 0 : return ret;
166 : : }
167 : : else keytype = EVP_PKEY_RSA;
168 : 2 : sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
169 : 2 : return d2i_PrivateKey(keytype, a, pp, length);
170 : : }
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