crypto/asn1/d2i_pr.c

/* crypto/asn1/d2i_pr.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#ifndef OPENSSL_NO_ENGINE
# include <openssl/engine.h>
#endif
#include <openssl/x509.h>
#include <openssl/asn1.h>
#include "asn1_locl.h"

EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
                         long length)
{
    EVP_PKEY *ret;
    const unsigned char *p = *pp;

    if ((a == NULL) || (*a == NULL)) {
        if ((ret = EVP_PKEY_new()) == NULL) {
            ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_EVP_LIB);
            return (NULL);
        }
    } else {
        ret = *a;
#ifndef OPENSSL_NO_ENGINE
        if (ret->engine) {
            ENGINE_finish(ret->engine);
            ret->engine = NULL;
        }
#endif
    }

    if (!EVP_PKEY_set_type(ret, type)) {
        ASN1err(ASN1_F_D2I_PRIVATEKEY, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
        goto err;
    }

    if (!ret->ameth->old_priv_decode ||
        !ret->ameth->old_priv_decode(ret, &p, length)) {
        if (ret->ameth->priv_decode) {
            PKCS8_PRIV_KEY_INFO *p8 = NULL;
            p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, length);
            if (!p8)
                goto err;
            EVP_PKEY_free(ret);
            ret = EVP_PKCS82PKEY(p8);
            PKCS8_PRIV_KEY_INFO_free(p8);
            if (ret == NULL)
                goto err;
        } else {
            ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_ASN1_LIB);
            goto err;
        }
    }
    *pp = p;
    if (a != NULL)
        (*a) = ret;
    return (ret);
 err:
    if ((ret != NULL) && ((a == NULL) || (*a != ret)))
        EVP_PKEY_free(ret);
    return (NULL);
}

/*
 * This works like d2i_PrivateKey() except it automatically works out the
 * type
 */

EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
                             long length)
{
    STACK_OF(ASN1_TYPE) *inkey;
    const unsigned char *p;
    int keytype;
    p = *pp;
    /*
     * Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE): by
     * analyzing it we can determine the passed structure: this assumes the
     * input is surrounded by an ASN1 SEQUENCE.
     */
    inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, length);
    p = *pp;
    /*
     * Since we only need to discern "traditional format" RSA and DSA keys we
     * can just count the elements.
     */
    if (sk_ASN1_TYPE_num(inkey) == 6)
        keytype = EVP_PKEY_DSA;
    else if (sk_ASN1_TYPE_num(inkey) == 4)
        keytype = EVP_PKEY_EC;
    else if (sk_ASN1_TYPE_num(inkey) == 3) { /* This seems to be PKCS8, not
                                              * traditional format */
        PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, length);
        EVP_PKEY *ret;

        sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
        if (!p8) {
            ASN1err(ASN1_F_D2I_AUTOPRIVATEKEY,
                    ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
            return NULL;
        }
        ret = EVP_PKCS82PKEY(p8);
        PKCS8_PRIV_KEY_INFO_free(p8);
        if (ret == NULL)
            return NULL;
        *pp = p;
        if (a) {
            *a = ret;
        }
        return ret;
    } else
        keytype = EVP_PKEY_RSA;
    sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
    return d2i_PrivateKey(keytype, a, pp, length);
}
Revision:	7389
Committed:	Sat Dec 5 17:55:33 2015 UTC (8 years, 4 months ago) by laffer1
Content type:	text/plain
File size:	6523 byte(s)
Log Message:	openssl 1.0.1q
#	Content
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	EVP_PKEY d2i_PrivateKey(int type, EVP_PKEY a, const unsigned char *pp,
72	long length)
73	{
74	EVP_PKEY *ret;
75	const unsigned char p = pp;
76
77	if ((a == NULL) \|\| (*a == NULL)) {
78	if ((ret = EVP_PKEY_new()) == NULL) {
79	ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_EVP_LIB);
80	return (NULL);
81	}
82	} else {
83	ret = *a;
84	#ifndef OPENSSL_NO_ENGINE
85	if (ret->engine) {
86	ENGINE_finish(ret->engine);
87	ret->engine = NULL;
88	}
89	#endif
90	}
91
92	if (!EVP_PKEY_set_type(ret, type)) {
93	ASN1err(ASN1_F_D2I_PRIVATEKEY, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
94	goto err;
95	}
96
97	if (!ret->ameth->old_priv_decode \|\|
98	!ret->ameth->old_priv_decode(ret, &p, length)) {
99	if (ret->ameth->priv_decode) {
100	PKCS8_PRIV_KEY_INFO *p8 = NULL;
101	p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, length);
102	if (!p8)
103	goto err;
104	EVP_PKEY_free(ret);
105	ret = EVP_PKCS82PKEY(p8);
106	PKCS8_PRIV_KEY_INFO_free(p8);
107	if (ret == NULL)
108	goto err;
109	} else {
110	ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_ASN1_LIB);
111	goto err;
112	}
113	}
114	*pp = p;
115	if (a != NULL)
116	(*a) = ret;
117	return (ret);
118	err:
119	if ((ret != NULL) && ((a == NULL) \|\| (*a != ret)))
120	EVP_PKEY_free(ret);
121	return (NULL);
122	}
123
124	/*
125	* This works like d2i_PrivateKey() except it automatically works out the
126	* type
127	*/
128
129	EVP_PKEY d2i_AutoPrivateKey(EVP_PKEY a, const unsigned char *pp,
130	long length)
131	{
132	STACK_OF(ASN1_TYPE) *inkey;
133	const unsigned char *p;
134	int keytype;
135	p = *pp;
136	/*
137	* Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE): by
138	* analyzing it we can determine the passed structure: this assumes the
139	* input is surrounded by an ASN1 SEQUENCE.
140	*/
141	inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, length);
142	p = *pp;
143	/*
144	* Since we only need to discern "traditional format" RSA and DSA keys we
145	* can just count the elements.
146	*/
147	if (sk_ASN1_TYPE_num(inkey) == 6)
148	keytype = EVP_PKEY_DSA;
149	else if (sk_ASN1_TYPE_num(inkey) == 4)
150	keytype = EVP_PKEY_EC;
151	else if (sk_ASN1_TYPE_num(inkey) == 3) { /* This seems to be PKCS8, not
152	* traditional format */
153	PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, length);
154	EVP_PKEY *ret;
155
156	sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
157	if (!p8) {
158	ASN1err(ASN1_F_D2I_AUTOPRIVATEKEY,
159	ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
160	return NULL;
161	}
162	ret = EVP_PKCS82PKEY(p8);
163	PKCS8_PRIV_KEY_INFO_free(p8);
164	if (ret == NULL)
165	return NULL;
166	*pp = p;
167	if (a) {
168	*a = ret;
169	}
170	return ret;
171	} else
172	keytype = EVP_PKEY_RSA;
173	sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
174	return d2i_PrivateKey(keytype, a, pp, length);
175	}