/* 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>

EXPORT_C 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

EXPORT_C 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