text: /* crypto/pem/pem_all.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.]
   */
  /* ====================================================================
   * Copyright (c) 1998-2002 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
   *    openssl-core@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>
  #undef SSLEAY_MACROS
  #include "cryptlib.h"
  #include <openssl/bio.h>
  #include <openssl/evp.h>
  #include <openssl/x509.h>
  #include <openssl/pkcs7.h>
  #include <openssl/pem.h>
  #ifndef OPENSSL_NO_RSA
  #include <openssl/rsa.h>
  #endif
  #ifndef OPENSSL_NO_DSA
  #include <openssl/dsa.h>
  #endif
  #ifndef OPENSSL_NO_DH
  #include <openssl/dh.h>
  #endif
  
  #ifndef OPENSSL_NO_RSA
  static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa);
  #endif
  #ifndef OPENSSL_NO_DSA
  static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa);
  #endif
  
  #ifndef OPENSSL_NO_EC
  static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey);
  #endif
  
  IMPLEMENT_PEM_rw(X509_REQ, X509_REQ, PEM_STRING_X509_REQ, X509_REQ)
  
  IMPLEMENT_PEM_write(X509_REQ_NEW, X509_REQ, PEM_STRING_X509_REQ_OLD, X509_REQ)
  
  IMPLEMENT_PEM_rw(X509_CRL, X509_CRL, PEM_STRING_X509_CRL, X509_CRL)
  
  IMPLEMENT_PEM_rw(PKCS7, PKCS7, PEM_STRING_PKCS7, PKCS7)
  
  IMPLEMENT_PEM_rw(NETSCAPE_CERT_SEQUENCE, NETSCAPE_CERT_SEQUENCE,
  					PEM_STRING_X509, NETSCAPE_CERT_SEQUENCE)
  
  
  #ifndef OPENSSL_NO_RSA
  
  /* We treat RSA or DSA private keys as a special case.
   *
   * For private keys we read in an EVP_PKEY structure with
   * PEM_read_bio_PrivateKey() and extract the relevant private
   * key: this means can handle "traditional" and PKCS#8 formats
   * transparently.
   */
  
  static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa)
  {
  	RSA *rtmp;
  	if(!key) return NULL;
  	rtmp = EVP_PKEY_get1_RSA(key);
  	EVP_PKEY_free(key);
  	if(!rtmp) return NULL;
  	if(rsa) {
  		RSA_free(*rsa);
  		*rsa = rtmp;
  	}
  	return rtmp;
  }
  
  RSA *PEM_read_bio_RSAPrivateKey(BIO *bp, RSA **rsa, pem_password_cb *cb,
  								void *u)
  {
  	EVP_PKEY *pktmp;
  	pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
  	return pkey_get_rsa(pktmp, rsa);
  }
  
  #ifndef OPENSSL_NO_FP_API
  
  RSA *PEM_read_RSAPrivateKey(FILE *fp, RSA **rsa, pem_password_cb *cb,
  								void *u)
  {
  	EVP_PKEY *pktmp;
  	pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
  	return pkey_get_rsa(pktmp, rsa);
  }
  
  #endif
  
  IMPLEMENT_PEM_write_cb_const(RSAPrivateKey, RSA, PEM_STRING_RSA, RSAPrivateKey)
  IMPLEMENT_PEM_rw_const(RSAPublicKey, RSA, PEM_STRING_RSA_PUBLIC, RSAPublicKey)
  IMPLEMENT_PEM_rw(RSA_PUBKEY, RSA, PEM_STRING_PUBLIC, RSA_PUBKEY)
  
  #endif
  
  #ifndef OPENSSL_NO_DSA
  
  static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa)
  {
  	DSA *dtmp;
  	if(!key) return NULL;
  	dtmp = EVP_PKEY_get1_DSA(key);
  	EVP_PKEY_free(key);
  	if(!dtmp) return NULL;
  	if(dsa) {
  		DSA_free(*dsa);
  		*dsa = dtmp;
  	}
  	return dtmp;
  }
  
  DSA *PEM_read_bio_DSAPrivateKey(BIO *bp, DSA **dsa, pem_password_cb *cb,
  								void *u)
  {
  	EVP_PKEY *pktmp;
  	pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
  	return pkey_get_dsa(pktmp, dsa);
  }
  
  IMPLEMENT_PEM_write_cb_const(DSAPrivateKey, DSA, PEM_STRING_DSA, DSAPrivateKey)
  IMPLEMENT_PEM_rw(DSA_PUBKEY, DSA, PEM_STRING_PUBLIC, DSA_PUBKEY)
  
  #ifndef OPENSSL_NO_FP_API
  
  DSA *PEM_read_DSAPrivateKey(FILE *fp, DSA **dsa, pem_password_cb *cb,
  								void *u)
  {
  	EVP_PKEY *pktmp;
  	pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
  	return pkey_get_dsa(pktmp, dsa);
  }
  
  #endif
  
  IMPLEMENT_PEM_rw_const(DSAparams, DSA, PEM_STRING_DSAPARAMS, DSAparams)
  
  #endif
  
  
  #ifndef OPENSSL_NO_EC
  static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey)
  {
  	EC_KEY *dtmp;
  	if(!key) return NULL;
  	dtmp = EVP_PKEY_get1_EC_KEY(key);
  	EVP_PKEY_free(key);
  	if(!dtmp) return NULL;
  	if(eckey) 
  	{
   		EC_KEY_free(*eckey);
  		*eckey = dtmp;
  	}
  	return dtmp;
  }
  
  EC_KEY *PEM_read_bio_ECPrivateKey(BIO *bp, EC_KEY **key, pem_password_cb *cb,
  							void *u)
  {
  	EVP_PKEY *pktmp;
  	pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
  	return pkey_get_eckey(pktmp, key);
  }
  
  IMPLEMENT_PEM_rw_const(ECPKParameters, EC_GROUP, PEM_STRING_ECPARAMETERS, ECPKParameters)
  
  IMPLEMENT_PEM_write_cb(ECPrivateKey, EC_KEY, PEM_STRING_ECPRIVATEKEY, ECPrivateKey)
  
  IMPLEMENT_PEM_rw(EC_PUBKEY, EC_KEY, PEM_STRING_PUBLIC, EC_PUBKEY)
  
  #ifndef OPENSSL_NO_FP_API
   
  EC_KEY *PEM_read_ECPrivateKey(FILE *fp, EC_KEY **eckey, pem_password_cb *cb,
   								void *u)
  {
  	EVP_PKEY *pktmp;
  	pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
  	return pkey_get_eckey(pktmp, eckey);
  }
  
  #endif
  
  #endif
  
  #ifndef OPENSSL_NO_DH
  
  IMPLEMENT_PEM_rw_const(DHparams, DH, PEM_STRING_DHPARAMS, DHparams)
  
  #endif
  
  
  /* The PrivateKey case is not that straightforward.
   *   IMPLEMENT_PEM_rw_cb(PrivateKey, EVP_PKEY, PEM_STRING_EVP_PKEY, PrivateKey)
   * does not work, RSA and DSA keys have specific strings.
   * (When reading, parameter PEM_STRING_EVP_PKEY is a wildcard for anything
   * appropriate.)
   */
  IMPLEMENT_PEM_write_cb(PrivateKey, EVP_PKEY, ((x->type == EVP_PKEY_DSA)?PEM_STRING_DSA:\
  			(x->type == EVP_PKEY_RSA)?PEM_STRING_RSA:PEM_STRING_ECPRIVATEKEY), PrivateKey)
  
  IMPLEMENT_PEM_rw(PUBKEY, EVP_PKEY, PEM_STRING_PUBLIC, PUBKEY)
  
  