/* evp_pkey.c */

/*

 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project

 * 1999.

 */

/* ====================================================================

 * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.

 *

 * 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 above 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 acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    licensing@OpenSSL.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED 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 OpenSSL PROJECT OR

 * ITS 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.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

#include <stdio.h>

#include <stdlib.h>

#include "cryptlib.h"

#include <openssl/x509.h>

#include <openssl/rand.h>

#include "asn1_locl.h"

/* Extract a private key from a PKCS8 structure */

EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)

{

    EVP_PKEY *pkey = NULL;

    ASN1_OBJECT *algoid;

    char obj_tmp[80];

    if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))

        return NULL;

    if (!(pkey = EVP_PKEY_new())) {

        EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_MALLOC_FAILURE);

        return NULL;

    }

    if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) {

        EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);

        i2t_ASN1_OBJECT(obj_tmp, 80, algoid);

        ERR_add_error_data(2, "TYPE=", obj_tmp);

        goto error;

    }

    if (pkey->ameth->priv_decode) {

        if (!pkey->ameth->priv_decode(pkey, p8)) {

            EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_PRIVATE_KEY_DECODE_ERROR);

            goto error;

        }

    } else {

        EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_METHOD_NOT_SUPPORTED);

        goto error;

    }

    return pkey;

 error:

    EVP_PKEY_free(pkey);

    return NULL;

}

PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey)

{

    return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK);

}

/* Turn a private key into a PKCS8 structure */

PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken)

{

    PKCS8_PRIV_KEY_INFO *p8;

    if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) {

        EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, ERR_R_MALLOC_FAILURE);

        return NULL;

    }

    p8->broken = broken;

    if (pkey->ameth) {

        if (pkey->ameth->priv_encode) {

            if (!pkey->ameth->priv_encode(p8, pkey)) {

                EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,

                       EVP_R_PRIVATE_KEY_ENCODE_ERROR);

                goto error;

            }

        } else {

            EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, EVP_R_METHOD_NOT_SUPPORTED);

            goto error;

        }

    } else {

        EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN,

               EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);

        goto error;

    }

    RAND_add(p8->pkey->value.octet_string->data,

             p8->pkey->value.octet_string->length, 0.0);

    return p8;

 error:

    PKCS8_PRIV_KEY_INFO_free(p8);

    return NULL;

}

PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken)

{

    switch (broken) {

    case PKCS8_OK:

        p8->broken = PKCS8_OK;

        return p8;

        break;

    case PKCS8_NO_OCTET:

        p8->broken = PKCS8_NO_OCTET;

        p8->pkey->type = V_ASN1_SEQUENCE;

        return p8;

        break;

    default:

        EVPerr(EVP_F_PKCS8_SET_BROKEN, EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE);

        return NULL;

    }

}

/* EVP_PKEY attribute functions */

int EVP_PKEY_get_attr_count(const EVP_PKEY *key)

{

    return X509at_get_attr_count(key->attributes);

}

int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos)

{

    return X509at_get_attr_by_NID(key->attributes, nid, lastpos);

}

int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj,

                             int lastpos)

{

    return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);

}

X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)

{

    return X509at_get_attr(key->attributes, loc);

}

X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)

{

    return X509at_delete_attr(key->attributes, loc);

}

int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)

{

    if (X509at_add1_attr(&key->attributes, attr))

        return 1;

    return 0;

}

int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,

                              const ASN1_OBJECT *obj, int type,

                              const unsigned char *bytes, int len)

{

    if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len))

        return 1;

    return 0;

}

int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,

                              int nid, int type,

                              const unsigned char *bytes, int len)

{

    if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len))

        return 1;

    return 0;

}

int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,

                              const char *attrname, int type,

                              const unsigned char *bytes, int len)

{

    if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, bytes, len))

        return 1;

    return 0;

}