GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/pem/pem_pk8.c Lines: 29 89 32.6 %
Date: 2017-11-13 Branches: 9 32 28.1 %

Line Branch Exec Source
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/* $OpenBSD: pem_pk8.c,v 1.13 2017/01/29 17:49:23 beck Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * All rights reserved.
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 *
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 * This package is an SSL implementation written
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 * by Eric Young (eay@cryptsoft.com).
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 * The implementation was written so as to conform with Netscapes SSL.
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 *
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 * This library is free for commercial and non-commercial use as long as
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 * the following conditions are aheared to.  The following conditions
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 * apply to all code found in this distribution, be it the RC4, RSA,
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 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
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 * included with this distribution is covered by the same copyright terms
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 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
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 *
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 * Copyright remains Eric Young's, and as such any Copyright notices in
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 * the code are not to be removed.
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 * If this package is used in a product, Eric Young should be given attribution
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 * as the author of the parts of the library used.
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 * This can be in the form of a textual message at program startup or
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 * in documentation (online or textual) provided with the package.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *    "This product includes cryptographic software written by
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 *     Eric Young (eay@cryptsoft.com)"
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 *    The word 'cryptographic' can be left out if the rouines from the library
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 *    being used are not cryptographic related :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
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 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * The licence and distribution terms for any publically available version or
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 * derivative of this code cannot be changed.  i.e. this code cannot simply be
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 * copied and put under another distribution licence
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 * [including the GNU Public Licence.]
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 */
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#include <stdio.h>
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#include <string.h>
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#include <openssl/buffer.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/pem.h>
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#include <openssl/pkcs12.h>
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#include <openssl/x509.h>
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static int do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid,
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    const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
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static int do_pk8pkey_fp(FILE *bp, EVP_PKEY *x, int isder, int nid,
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    const EVP_CIPHER *enc, char *kstr, int klen, pem_password_cb *cb, void *u);
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/* These functions write a private key in PKCS#8 format: it is a "drop in"
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 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
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 * is NULL then it uses the unencrypted private key form. The 'nid' versions
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 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
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 */
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int
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PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid, char *kstr,
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    int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u);
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}
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int
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PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u);
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}
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int
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i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u);
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}
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int
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i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u);
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}
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static int
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do_pk8pkey(BIO *bp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	X509_SIG *p8;
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	PKCS8_PRIV_KEY_INFO *p8inf;
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	char buf[PEM_BUFSIZE];
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	int ret;
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	if (!(p8inf = EVP_PKEY2PKCS8(x))) {
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		PEMerror(PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
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		return 0;
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	}
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	if (enc || (nid != -1)) {
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		if (!kstr) {
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			if (!cb)
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				klen = PEM_def_callback(buf, PEM_BUFSIZE, 1, u);
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			else
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				klen = cb(buf, PEM_BUFSIZE, 1, u);
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			if (klen <= 0) {
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				PEMerror(PEM_R_READ_KEY);
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				PKCS8_PRIV_KEY_INFO_free(p8inf);
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				return 0;
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			}
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			kstr = buf;
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		}
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		p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
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		if (kstr == buf)
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			explicit_bzero(buf, klen);
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		PKCS8_PRIV_KEY_INFO_free(p8inf);
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		if (isder)
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			ret = i2d_PKCS8_bio(bp, p8);
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		else
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			ret = PEM_write_bio_PKCS8(bp, p8);
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		X509_SIG_free(p8);
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		return ret;
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	} else {
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		if (isder)
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			ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
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		else
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			ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
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		PKCS8_PRIV_KEY_INFO_free(p8inf);
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		return ret;
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	}
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}
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EVP_PKEY *
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d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
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{
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	PKCS8_PRIV_KEY_INFO *p8inf = NULL;
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	X509_SIG *p8 = NULL;
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	int klen;
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	EVP_PKEY *ret;
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	char psbuf[PEM_BUFSIZE];
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	p8 = d2i_PKCS8_bio(bp, NULL);
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	if (!p8)
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		return NULL;
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	if (cb)
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		klen = cb(psbuf, PEM_BUFSIZE, 0, u);
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	else
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		klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
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	if (klen <= 0) {
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		PEMerror(PEM_R_BAD_PASSWORD_READ);
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		X509_SIG_free(p8);
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		return NULL;
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	}
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	p8inf = PKCS8_decrypt(p8, psbuf, klen);
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	X509_SIG_free(p8);
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	if (!p8inf)
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		return NULL;
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	ret = EVP_PKCS82PKEY(p8inf);
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	PKCS8_PRIV_KEY_INFO_free(p8inf);
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	if (!ret)
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		return NULL;
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	if (x) {
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		EVP_PKEY_free(*x);
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		*x = ret;
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	}
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	return ret;
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}
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int
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i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u);
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}
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int
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i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid, char *kstr,
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    int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u);
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}
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int
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PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid, char *kstr,
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    int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u);
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}
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int
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PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u);
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}
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static int
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do_pk8pkey_fp(FILE *fp, EVP_PKEY *x, int isder, int nid, const EVP_CIPHER *enc,
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    char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	BIO *bp;
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	int ret;
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	if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
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		PEMerror(ERR_R_BUF_LIB);
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		return (0);
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	}
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	ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u);
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	BIO_free(bp);
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	return ret;
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}
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EVP_PKEY *
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d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
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{
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	BIO *bp;
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	EVP_PKEY *ret;
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	if (!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
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		PEMerror(ERR_R_BUF_LIB);
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		return NULL;
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	}
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	ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
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	BIO_free(bp);
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	return ret;
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}
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X509_SIG *
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PEM_read_PKCS8(FILE *fp, X509_SIG **x, pem_password_cb *cb, void *u)
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{
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	return PEM_ASN1_read((d2i_of_void *)d2i_X509_SIG, PEM_STRING_PKCS8, fp,
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	    (void **)x, cb, u);
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}
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int
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PEM_write_PKCS8(FILE *fp, X509_SIG *x)
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{
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	return PEM_ASN1_write((i2d_of_void *)i2d_X509_SIG, PEM_STRING_PKCS8, fp,
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	    x, NULL, NULL, 0, NULL, NULL);
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}
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X509_SIG *
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PEM_read_bio_PKCS8(BIO *bp, X509_SIG **x, pem_password_cb *cb, void *u)
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{
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	return PEM_ASN1_read_bio((d2i_of_void *)d2i_X509_SIG, PEM_STRING_PKCS8, bp,
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	    (void **)x, cb, u);
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}
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int
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PEM_write_bio_PKCS8(BIO *bp, X509_SIG *x)
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{
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	return PEM_ASN1_write_bio((i2d_of_void *)i2d_X509_SIG, PEM_STRING_PKCS8, bp,
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	    x, NULL, NULL, 0, NULL, NULL);
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}
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PKCS8_PRIV_KEY_INFO *
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PEM_read_PKCS8_PRIV_KEY_INFO(FILE *fp, PKCS8_PRIV_KEY_INFO **x, pem_password_cb *cb, void *u)
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{
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	return PEM_ASN1_read((d2i_of_void *)d2i_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, fp,
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	    (void **)x, cb, u);
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}
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int
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PEM_write_PKCS8_PRIV_KEY_INFO(FILE *fp, PKCS8_PRIV_KEY_INFO *x)
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{
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	return PEM_ASN1_write((i2d_of_void *)i2d_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, fp,
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	    x, NULL, NULL, 0, NULL, NULL);
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}
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PKCS8_PRIV_KEY_INFO *
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PEM_read_bio_PKCS8_PRIV_KEY_INFO(BIO *bp, PKCS8_PRIV_KEY_INFO **x, pem_password_cb *cb, void *u)
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{
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	return PEM_ASN1_read_bio((d2i_of_void *)d2i_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, bp,
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	    (void **)x, cb, u);
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}
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int
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PEM_write_bio_PKCS8_PRIV_KEY_INFO(BIO *bp, PKCS8_PRIV_KEY_INFO *x)
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{
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	return PEM_ASN1_write_bio((i2d_of_void *)i2d_PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF, bp,
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	    x, NULL, NULL, 0, NULL, NULL);
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}