/* crypto/asn1/x_pkey.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/evp.h>

#include <openssl/objects.h>

#include <openssl/asn1_mac.h>

#include <openssl/x509.h>

/* need to implement */

int i2d_X509_PKEY(X509_PKEY *a, unsigned char **pp)

{

    return (0);

}

X509_PKEY *d2i_X509_PKEY(X509_PKEY **a, const unsigned char **pp, long length)

{

    int i;

    M_ASN1_D2I_vars(a, X509_PKEY *, X509_PKEY_new);

    M_ASN1_D2I_Init();

    M_ASN1_D2I_start_sequence();

    M_ASN1_D2I_get_x(X509_ALGOR, ret->enc_algor, d2i_X509_ALGOR);

    M_ASN1_D2I_get_x(ASN1_OCTET_STRING, ret->enc_pkey, d2i_ASN1_OCTET_STRING);

    ret->cipher.cipher =

        EVP_get_cipherbyname(OBJ_nid2ln

                             (OBJ_obj2nid(ret->enc_algor->algorithm)));

    if (ret->cipher.cipher == NULL) {

        c.error = ASN1_R_UNSUPPORTED_CIPHER;

        c.line = __LINE__;

        goto err;

    }

    if (ret->enc_algor->parameter->type == V_ASN1_OCTET_STRING) {

        i = ret->enc_algor->parameter->value.octet_string->length;

        if (i > EVP_MAX_IV_LENGTH) {

            c.error = ASN1_R_IV_TOO_LARGE;

            c.line = __LINE__;

            goto err;

        }

        memcpy(ret->cipher.iv,

               ret->enc_algor->parameter->value.octet_string->data, i);

    } else

        memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);

    M_ASN1_D2I_Finish(a, X509_PKEY_free, ASN1_F_D2I_X509_PKEY);

}

X509_PKEY *X509_PKEY_new(void)

{

    X509_PKEY *ret = NULL;

    ASN1_CTX c;

    ret = OPENSSL_malloc(sizeof(X509_PKEY));

    if (ret == NULL) {

        c.line = __LINE__;

        goto err;

    }

    ret->version = 0;

    ret->enc_algor = X509_ALGOR_new();

    ret->enc_pkey = M_ASN1_OCTET_STRING_new();

    ret->dec_pkey = NULL;

    ret->key_length = 0;

    ret->key_data = NULL;

    ret->key_free = 0;

    ret->cipher.cipher = NULL;

    memset(ret->cipher.iv, 0, EVP_MAX_IV_LENGTH);

    ret->references = 1;

    if (ret->enc_algor == NULL || ret->enc_pkey == NULL) {

        c.line = __LINE__;

        goto err;

    }

    return ret;

err:

    X509_PKEY_free(ret);

    ASN1_MAC_H_err(ASN1_F_X509_PKEY_NEW, ERR_R_MALLOC_FAILURE, c.line);

    return NULL;

}

void X509_PKEY_free(X509_PKEY *x)

{

    int i;

    if (x == NULL)

        return;

    i = CRYPTO_add(&x->references, -1, CRYPTO_LOCK_X509_PKEY);

#ifdef REF_PRINT

    REF_PRINT("X509_PKEY", x);

#endif

    if (i > 0)

        return;

#ifdef REF_CHECK

    if (i < 0) {

        fprintf(stderr, "X509_PKEY_free, bad reference count\n");

        abort();

    }

#endif

    if (x->enc_algor != NULL)

        X509_ALGOR_free(x->enc_algor);

    if (x->enc_pkey != NULL)

        M_ASN1_OCTET_STRING_free(x->enc_pkey);

    if (x->dec_pkey != NULL)

        EVP_PKEY_free(x->dec_pkey);

    if ((x->key_data != NULL) && (x->key_free))

        OPENSSL_free(x->key_data);

    OPENSSL_free(x);

}