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pem_pkey.c

/* crypto/pem/pem_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/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/pkcs12.h>
#include <openssl/pem.h>


EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
      {
      char *nm=NULL;
      const unsigned char *p=NULL;
      unsigned char *data=NULL;
      long len;
      EVP_PKEY *ret=NULL;

      if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
            return NULL;
      p = data;

      if (strcmp(nm,PEM_STRING_RSA) == 0)
            ret=d2i_PrivateKey(EVP_PKEY_RSA,x,&p,len);
      else if (strcmp(nm,PEM_STRING_DSA) == 0)
            ret=d2i_PrivateKey(EVP_PKEY_DSA,x,&p,len);
      else if (strcmp(nm,PEM_STRING_ECPRIVATEKEY) == 0)
            ret=d2i_PrivateKey(EVP_PKEY_EC,x,&p,len);
      else if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
            PKCS8_PRIV_KEY_INFO *p8inf;
            p8inf=d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
            if(!p8inf) goto p8err;
            ret = EVP_PKCS82PKEY(p8inf);
            if(x) {
                  if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
                  *x = ret;
            }
            PKCS8_PRIV_KEY_INFO_free(p8inf);
      } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
            PKCS8_PRIV_KEY_INFO *p8inf;
            X509_SIG *p8;
            int klen;
            char psbuf[PEM_BUFSIZE];
            p8 = d2i_X509_SIG(NULL, &p, len);
            if(!p8) goto p8err;
            if (cb) klen=cb(psbuf,PEM_BUFSIZE,0,u);
            else klen=PEM_def_callback(psbuf,PEM_BUFSIZE,0,u);
            if (klen <= 0) {
                  PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,
                              PEM_R_BAD_PASSWORD_READ);
                  X509_SIG_free(p8);
                  goto err;
            }
            p8inf = PKCS8_decrypt(p8, psbuf, klen);
            X509_SIG_free(p8);
            if(!p8inf) goto p8err;
            ret = EVP_PKCS82PKEY(p8inf);
            if(x) {
                  if(*x) EVP_PKEY_free((EVP_PKEY *)*x);
                  *x = ret;
            }
            PKCS8_PRIV_KEY_INFO_free(p8inf);
      }
p8err:
      if (ret == NULL)
            PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY,ERR_R_ASN1_LIB);
err:
      OPENSSL_free(nm);
      OPENSSL_cleanse(data, len);
      OPENSSL_free(data);
      return(ret);
      }

#ifndef OPENSSL_NO_FP_API
EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
      {
        BIO *b;
        EVP_PKEY *ret;

        if ((b=BIO_new(BIO_s_file())) == NULL)
            {
            PEMerr(PEM_F_PEM_READ_PRIVATEKEY,ERR_R_BUF_LIB);
                return(0);
            }
        BIO_set_fp(b,fp,BIO_NOCLOSE);
        ret=PEM_read_bio_PrivateKey(b,x,cb,u);
        BIO_free(b);
        return(ret);
      }
#endif

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