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/* 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;
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, pp, length))
{
if (ret->ameth->priv_decode)
{
PKCS8_PRIV_KEY_INFO *p8=NULL;
p8=d2i_PKCS8_PRIV_KEY_INFO(NULL,pp,length);
if (!p8) goto err;
EVP_PKEY_free(ret);
ret = EVP_PKCS82PKEY(p8);
PKCS8_PRIV_KEY_INFO_free(p8);
}
else
{
ASN1err(ASN1_F_D2I_PRIVATEKEY,ERR_R_ASN1_LIB);
goto err;
}
}
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);
/* 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,pp,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 (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);
}
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