/* $OpenBSD: x_pubkey.c,v 1.32 2022/05/24 19:59:14 tb Exp $ */

/* 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 <openssl/opensslconf.h>

#include <openssl/asn1t.h>

#include <openssl/err.h>

#include <openssl/x509.h>

#ifndef OPENSSL_NO_DSA

#include <openssl/dsa.h>

#endif

#ifndef OPENSSL_NO_RSA

#include <openssl/rsa.h>

#endif

#include "asn1_locl.h"

#include "evp_locl.h"

#include "x509_lcl.h"

/* Minor tweak to operation: free up EVP_PKEY */

static int

pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)

{

  if (operation == ASN1_OP_FREE_POST) {

    X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;

    EVP_PKEY_free(pubkey->pkey);

  }

  return 1;

}

static const ASN1_AUX X509_PUBKEY_aux = {

  .asn1_cb = pubkey_cb,

};

static const ASN1_TEMPLATE X509_PUBKEY_seq_tt[] = {

  {

    .offset = offsetof(X509_PUBKEY, algor),

    .field_name = "algor",

    .item = &X509_ALGOR_it,

  },

  {

    .offset = offsetof(X509_PUBKEY, public_key),

    .field_name = "public_key",

    .item = &ASN1_BIT_STRING_it,

  },

};

const ASN1_ITEM X509_PUBKEY_it = {

  .itype = ASN1_ITYPE_SEQUENCE,

  .utype = V_ASN1_SEQUENCE,

  .templates = X509_PUBKEY_seq_tt,

  .tcount = sizeof(X509_PUBKEY_seq_tt) / sizeof(ASN1_TEMPLATE),

  .funcs = &X509_PUBKEY_aux,

  .size = sizeof(X509_PUBKEY),

  .sname = "X509_PUBKEY",

};

X509_PUBKEY *

d2i_X509_PUBKEY(X509_PUBKEY **a, const unsigned char **in, long len)

{

  return (X509_PUBKEY *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,

      &X509_PUBKEY_it);

}

int

i2d_X509_PUBKEY(X509_PUBKEY *a, unsigned char **out)

{

  return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_PUBKEY_it);

}

X509_PUBKEY *

X509_PUBKEY_new(void)

{

  return (X509_PUBKEY *)ASN1_item_new(&X509_PUBKEY_it);

}

void

X509_PUBKEY_free(X509_PUBKEY *a)

{

  ASN1_item_free((ASN1_VALUE *)a, &X509_PUBKEY_it);

}

int

X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)

{

  X509_PUBKEY *pk = NULL;

  if (x == NULL)

    return (0);

  if ((pk = X509_PUBKEY_new()) == NULL)

    goto error;

  if (pkey->ameth) {

    if (pkey->ameth->pub_encode) {

      if (!pkey->ameth->pub_encode(pk, pkey)) {

        X509error(X509_R_PUBLIC_KEY_ENCODE_ERROR);

        goto error;

      }

    } else {

      X509error(X509_R_METHOD_NOT_SUPPORTED);

      goto error;

    }

  } else {

    X509error(X509_R_UNSUPPORTED_ALGORITHM);

    goto error;

  }

  if (*x != NULL)

    X509_PUBKEY_free(*x);

  *x = pk;

  return 1;

 error:

  if (pk != NULL)

    X509_PUBKEY_free(pk);

  return 0;

}

EVP_PKEY *

X509_PUBKEY_get0(X509_PUBKEY *key)

{

  EVP_PKEY *ret = NULL;

  if (key == NULL)

    goto error;

  if (key->pkey != NULL)

    return key->pkey;

  if (key->public_key == NULL)

    goto error;

  if ((ret = EVP_PKEY_new()) == NULL) {

    X509error(ERR_R_MALLOC_FAILURE);

    goto error;

  }

  if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) {

    X509error(X509_R_UNSUPPORTED_ALGORITHM);

    goto error;

  }

  if (ret->ameth->pub_decode) {

    if (!ret->ameth->pub_decode(ret, key)) {

      X509error(X509_R_PUBLIC_KEY_DECODE_ERROR);

      goto error;

    }

  } else {

    X509error(X509_R_METHOD_NOT_SUPPORTED);

    goto error;

  }

  /* Check to see if another thread set key->pkey first */

  CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);

  if (key->pkey) {

    CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);

    EVP_PKEY_free(ret);

    ret = key->pkey;

  } else {

    key->pkey = ret;

    CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);

  }

  return ret;

 error:

  EVP_PKEY_free(ret);

  return (NULL);

}

EVP_PKEY *

X509_PUBKEY_get(X509_PUBKEY *key)

{

  EVP_PKEY *pkey;

  if ((pkey = X509_PUBKEY_get0(key)) == NULL)

    return (NULL);

  CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);

  return pkey;

}

/*

 * Decode an X509_PUBKEY into the specified key type.

 */

static int

pubkey_ex_d2i(int pkey_type, ASN1_VALUE **pval, const unsigned char **in,

    long len, const ASN1_ITEM *it)

{

  const ASN1_EXTERN_FUNCS *ef = it->funcs;

  const unsigned char *p = *in;

  X509_PUBKEY *xpk = NULL;

  ASN1_VALUE *key = NULL;

  EVP_PKEY *pkey = NULL;

  int ret = 0;

  if ((xpk = d2i_X509_PUBKEY(NULL, &p, len)) == NULL)

    goto err;

  if ((pkey = X509_PUBKEY_get(xpk)) == NULL)

    goto err;

  switch (pkey_type) {

  case EVP_PKEY_NONE:

    key = (ASN1_VALUE *)pkey;

    pkey = NULL;

    break;

  case EVP_PKEY_DSA:

    key = (ASN1_VALUE *)EVP_PKEY_get1_DSA(pkey);

    break;

  case EVP_PKEY_RSA:

    key = (ASN1_VALUE *)EVP_PKEY_get1_RSA(pkey);

    break;

  case EVP_PKEY_EC:

    key = (ASN1_VALUE *)EVP_PKEY_get1_EC_KEY(pkey);

    break;

  default:

    goto err;

  }

  if (key == NULL)

    goto err;

  ef->asn1_ex_free(pval, it);

  *pval = key;

  *in = p;

  ret = 1;

 err:

  EVP_PKEY_free(pkey);

  X509_PUBKEY_free(xpk);

  return ret;

}

/*

 * Encode the specified key type into an X509_PUBKEY.

 */

static int

pubkey_ex_i2d(int pkey_type, ASN1_VALUE **pval, unsigned char **out,

    const ASN1_ITEM *it)

{

  X509_PUBKEY *xpk = NULL;

  EVP_PKEY *pkey, *pktmp;

  int ret = -1;

  if ((pkey = pktmp = EVP_PKEY_new()) == NULL)

    goto err;

  switch (pkey_type) {

  case EVP_PKEY_NONE:

    pkey = (EVP_PKEY *)*pval;

    break;

  case EVP_PKEY_DSA:

    if (!EVP_PKEY_set1_DSA(pkey, (DSA *)*pval))

      goto err;

    break;

  case EVP_PKEY_RSA:

    if (!EVP_PKEY_set1_RSA(pkey, (RSA *)*pval))

      goto err;

    break;

  case EVP_PKEY_EC:

    if (!EVP_PKEY_set1_EC_KEY(pkey, (EC_KEY*)*pval))

      goto err;

    break;

  default:

    goto err;

  }

  if (!X509_PUBKEY_set(&xpk, pkey))

    goto err;

  ret = i2d_X509_PUBKEY(xpk, out);

 err:

  EVP_PKEY_free(pktmp);

  X509_PUBKEY_free(xpk);

  return ret;

}

static int

pkey_pubkey_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  if ((*pval = (ASN1_VALUE *)EVP_PKEY_new()) == NULL)

    return 0;

  return 1;

}

static void

pkey_pubkey_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  EVP_PKEY_free((EVP_PKEY *)*pval);

  *pval = NULL;

}

static int

pkey_pubkey_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,

    const ASN1_ITEM *it, int tag, int aclass, char opt, ASN1_TLC *ctx)

{

  return pubkey_ex_d2i(EVP_PKEY_NONE, pval, in, len, it);

}

static int

pkey_pubkey_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it,

    int tag, int aclass)

{

  return pubkey_ex_i2d(EVP_PKEY_NONE, pval, out, it);

}

const ASN1_EXTERN_FUNCS pkey_pubkey_asn1_ff = {

  .app_data = NULL,

  .asn1_ex_new = pkey_pubkey_ex_new,

  .asn1_ex_free = pkey_pubkey_ex_free,

  .asn1_ex_clear = NULL,

  .asn1_ex_d2i = pkey_pubkey_ex_d2i,

  .asn1_ex_i2d = pkey_pubkey_ex_i2d,

  .asn1_ex_print = NULL,

};

const ASN1_ITEM EVP_PKEY_PUBKEY_it = {

  .itype = ASN1_ITYPE_EXTERN,

  .utype = 0,

  .templates = NULL,

  .tcount = 0,

  .funcs = &pkey_pubkey_asn1_ff,

  .size = 0,

  .sname = NULL,

};

EVP_PKEY *

d2i_PUBKEY(EVP_PKEY **pkey, const unsigned char **in, long len)

{

  return (EVP_PKEY *)ASN1_item_d2i((ASN1_VALUE **)pkey, in, len,

      &EVP_PKEY_PUBKEY_it);

}

int

i2d_PUBKEY(EVP_PKEY *pkey, unsigned char **out)

{

  return ASN1_item_i2d((ASN1_VALUE *)pkey, out, &EVP_PKEY_PUBKEY_it);

}

EVP_PKEY *

d2i_PUBKEY_bio(BIO *bp, EVP_PKEY **pkey)

{

  return (EVP_PKEY *)ASN1_item_d2i_bio(&EVP_PKEY_PUBKEY_it, bp,

      (ASN1_VALUE **)pkey);

}

int

i2d_PUBKEY_bio(BIO *bp, EVP_PKEY *pkey)

{

  return ASN1_item_i2d_bio(&EVP_PKEY_PUBKEY_it, bp, (ASN1_VALUE *)pkey);

}

EVP_PKEY *

d2i_PUBKEY_fp(FILE *fp, EVP_PKEY **pkey)

{

  return (EVP_PKEY *)ASN1_item_d2i_fp(&EVP_PKEY_PUBKEY_it, fp,

      (ASN1_VALUE **)pkey);

}

int

i2d_PUBKEY_fp(FILE *fp, EVP_PKEY *pkey)

{

  return ASN1_item_i2d_fp(&EVP_PKEY_PUBKEY_it, fp, (ASN1_VALUE *)pkey);

}

/*

 * The following are equivalents but which return RSA and DSA keys.

 */

#ifndef OPENSSL_NO_RSA

static int

rsa_pubkey_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  if ((*pval = (ASN1_VALUE *)RSA_new()) == NULL)

    return 0;

  return 1;

}

static void

rsa_pubkey_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  RSA_free((RSA *)*pval);

  *pval = NULL;

}

static int

rsa_pubkey_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,

    const ASN1_ITEM *it, int tag, int aclass, char opt, ASN1_TLC *ctx)

{

  return pubkey_ex_d2i(EVP_PKEY_RSA, pval, in, len, it);

}

static int

rsa_pubkey_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it,

    int tag, int aclass)

{

  return pubkey_ex_i2d(EVP_PKEY_RSA, pval, out, it);

}

const ASN1_EXTERN_FUNCS rsa_pubkey_asn1_ff = {

  .app_data = NULL,

  .asn1_ex_new = rsa_pubkey_ex_new,

  .asn1_ex_free = rsa_pubkey_ex_free,

  .asn1_ex_clear = NULL,

  .asn1_ex_d2i = rsa_pubkey_ex_d2i,

  .asn1_ex_i2d = rsa_pubkey_ex_i2d,

  .asn1_ex_print = NULL,

};

const ASN1_ITEM RSA_PUBKEY_it = {

  .itype = ASN1_ITYPE_EXTERN,

  .utype = 0,

  .templates = NULL,

  .tcount = 0,

  .funcs = &rsa_pubkey_asn1_ff,

  .size = 0,

  .sname = NULL,

};

RSA *

d2i_RSA_PUBKEY(RSA **rsa, const unsigned char **in, long len)

{

  return (RSA *)ASN1_item_d2i((ASN1_VALUE **)rsa, in, len,

      &RSA_PUBKEY_it);

}

int

i2d_RSA_PUBKEY(RSA *rsa, unsigned char **out)

{

  return ASN1_item_i2d((ASN1_VALUE *)rsa, out, &RSA_PUBKEY_it);

}

RSA *

d2i_RSA_PUBKEY_bio(BIO *bp, RSA **rsa)

{

  return (RSA *)ASN1_item_d2i_bio(&RSA_PUBKEY_it, bp, (ASN1_VALUE **)rsa);

}

int

i2d_RSA_PUBKEY_bio(BIO *bp, RSA *rsa)

{

  return ASN1_item_i2d_bio(&RSA_PUBKEY_it, bp, (ASN1_VALUE *)rsa);

}

RSA *

d2i_RSA_PUBKEY_fp(FILE *fp, RSA **rsa)

{

  return (RSA *)ASN1_item_d2i_fp(&RSA_PUBKEY_it, fp, (ASN1_VALUE **)rsa);

}

int

i2d_RSA_PUBKEY_fp(FILE *fp, RSA *rsa)

{

  return ASN1_item_i2d_fp(&RSA_PUBKEY_it, fp, (ASN1_VALUE *)rsa);

}

#endif

#ifndef OPENSSL_NO_DSA

static int

dsa_pubkey_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  if ((*pval = (ASN1_VALUE *)DSA_new()) == NULL)

    return 0;

  return 1;

}

static void

dsa_pubkey_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  DSA_free((DSA *)*pval);

  *pval = NULL;

}

static int

dsa_pubkey_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,

    const ASN1_ITEM *it, int tag, int aclass, char opt, ASN1_TLC *ctx)

{

  return pubkey_ex_d2i(EVP_PKEY_DSA, pval, in, len, it);

}

static int

dsa_pubkey_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it,

    int tag, int aclass)

{

  return pubkey_ex_i2d(EVP_PKEY_DSA, pval, out, it);

}

const ASN1_EXTERN_FUNCS dsa_pubkey_asn1_ff = {

  .app_data = NULL,

  .asn1_ex_new = dsa_pubkey_ex_new,

  .asn1_ex_free = dsa_pubkey_ex_free,

  .asn1_ex_clear = NULL,

  .asn1_ex_d2i = dsa_pubkey_ex_d2i,

  .asn1_ex_i2d = dsa_pubkey_ex_i2d,

  .asn1_ex_print = NULL,

};

const ASN1_ITEM DSA_PUBKEY_it = {

  .itype = ASN1_ITYPE_EXTERN,

  .utype = 0,

  .templates = NULL,

  .tcount = 0,

  .funcs = &dsa_pubkey_asn1_ff,

  .size = 0,

  .sname = NULL,

};

DSA *

d2i_DSA_PUBKEY(DSA **dsa, const unsigned char **in, long len)

{

  return (DSA *)ASN1_item_d2i((ASN1_VALUE **)dsa, in, len,

      &DSA_PUBKEY_it);

}

int

i2d_DSA_PUBKEY(DSA *dsa, unsigned char **out)

{

  return ASN1_item_i2d((ASN1_VALUE *)dsa, out, &DSA_PUBKEY_it);

}

DSA *

d2i_DSA_PUBKEY_bio(BIO *bp, DSA **dsa)

{

  return (DSA *)ASN1_item_d2i_bio(&DSA_PUBKEY_it, bp, (ASN1_VALUE **)dsa);

}

int

i2d_DSA_PUBKEY_bio(BIO *bp, DSA *dsa)

{

  return ASN1_item_i2d_bio(&DSA_PUBKEY_it, bp, (ASN1_VALUE *)dsa);

}

DSA *

d2i_DSA_PUBKEY_fp(FILE *fp, DSA **dsa)

{

  return (DSA *)ASN1_item_d2i_fp(&DSA_PUBKEY_it, fp, (ASN1_VALUE **)dsa);

}

int

i2d_DSA_PUBKEY_fp(FILE *fp, DSA *dsa)

{

  return ASN1_item_i2d_fp(&DSA_PUBKEY_it, fp, (ASN1_VALUE *)dsa);

}

#endif

#ifndef OPENSSL_NO_EC

static int

ec_pubkey_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  if ((*pval = (ASN1_VALUE *)EC_KEY_new()) == NULL)

    return 0;

  return 1;

}

static void

ec_pubkey_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)

{

  EC_KEY_free((EC_KEY *)*pval);

  *pval = NULL;

}

static int

ec_pubkey_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,

    const ASN1_ITEM *it, int tag, int aclass, char opt, ASN1_TLC *ctx)

{

  return pubkey_ex_d2i(EVP_PKEY_EC, pval, in, len, it);

}

static int

ec_pubkey_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it,

    int tag, int aclass)

{

  return pubkey_ex_i2d(EVP_PKEY_EC, pval, out, it);

}

const ASN1_EXTERN_FUNCS ec_pubkey_asn1_ff = {

  .app_data = NULL,

  .asn1_ex_new = ec_pubkey_ex_new,

  .asn1_ex_free = ec_pubkey_ex_free,

  .asn1_ex_clear = NULL,

  .asn1_ex_d2i = ec_pubkey_ex_d2i,

  .asn1_ex_i2d = ec_pubkey_ex_i2d,

  .asn1_ex_print = NULL,

};

const ASN1_ITEM EC_PUBKEY_it = {

  .itype = ASN1_ITYPE_EXTERN,

  .utype = 0,

  .templates = NULL,

  .tcount = 0,

  .funcs = &ec_pubkey_asn1_ff,

  .size = 0,

  .sname = NULL,

};

EC_KEY *

d2i_EC_PUBKEY(EC_KEY **ec, const unsigned char **in, long len)

{

  return (EC_KEY *)ASN1_item_d2i((ASN1_VALUE **)ec, in, len,

      &EC_PUBKEY_it);

}

int

i2d_EC_PUBKEY(EC_KEY *ec, unsigned char **out)

{

  return ASN1_item_i2d((ASN1_VALUE *)ec, out, &EC_PUBKEY_it);

}

EC_KEY *

d2i_EC_PUBKEY_bio(BIO *bp, EC_KEY **ec)

{

  return (EC_KEY *)ASN1_item_d2i_bio(&EC_PUBKEY_it, bp, (ASN1_VALUE **)ec);

}

int

i2d_EC_PUBKEY_bio(BIO *bp, EC_KEY *ec)

{

  return ASN1_item_i2d_bio(&EC_PUBKEY_it, bp, (ASN1_VALUE *)ec);

}

EC_KEY *

d2i_EC_PUBKEY_fp(FILE *fp, EC_KEY **ec)

{

  return (EC_KEY *)ASN1_item_d2i_fp(&EC_PUBKEY_it, fp, (ASN1_VALUE **)ec);

}

int

i2d_EC_PUBKEY_fp(FILE *fp, EC_KEY *ec)

{

  return ASN1_item_i2d_fp(&EC_PUBKEY_it, fp, (ASN1_VALUE *)ec);

}

#endif

int

X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj, int ptype,

    void *pval, unsigned char *penc, int penclen)

{

  if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))

    return 0;

  if (penc == NULL)

    return 1;

  ASN1_STRING_set0(pub->public_key, penc, penclen);

  return asn1_abs_set_unused_bits(pub->public_key, 0);

}

int

X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg, const unsigned char **pk,

    int *ppklen, X509_ALGOR **pa, X509_PUBKEY *pub)

{

  if (ppkalg)

    *ppkalg = pub->algor->algorithm;

  if (pk) {

    *pk = pub->public_key->data;

    *ppklen = pub->public_key->length;

  }

  if (pa)

    *pa = pub->algor;

  return 1;

}