GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/pem/pem_pkey.c Lines: 71 103 68.9 %
Date: 2017-11-13 Branches: 37 66 56.1 %

Line Branch Exec Source
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/* $OpenBSD: pem_pkey.c,v 1.23 2017/05/02 03:59:44 deraadt 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/opensslconf.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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#ifndef OPENSSL_NO_ENGINE
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#include <openssl/engine.h>
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#endif
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#include "asn1_locl.h"
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int pem_check_suffix(const char *pem_str, const char *suffix);
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EVP_PKEY *
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PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
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{
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1206
	char *nm = NULL;
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603
	const unsigned char *p = NULL;
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603
	unsigned char *data = NULL;
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603
	long len;
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	int slen;
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	EVP_PKEY *ret = NULL;
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	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY,
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	    bp, cb, u))
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		return NULL;
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603
	p = data;
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	if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
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		PKCS8_PRIV_KEY_INFO *p8inf;
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		p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
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194
		if (!p8inf)
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			goto p8err;
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		ret = EVP_PKCS82PKEY(p8inf);
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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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		PKCS8_PRIV_KEY_INFO_free(p8inf);
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603
	} else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
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		PKCS8_PRIV_KEY_INFO *p8inf;
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		X509_SIG *p8;
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		int klen;
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		char psbuf[PEM_BUFSIZE];
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		p8 = d2i_X509_SIG(NULL, &p, len);
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		if (!p8)
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			goto p8err;
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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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2
			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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			goto err;
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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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24
		if (!p8inf)
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			goto p8err;
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		ret = EVP_PKCS82PKEY(p8inf);
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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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		PKCS8_PRIV_KEY_INFO_free(p8inf);
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481
	} else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) {
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		const EVP_PKEY_ASN1_METHOD *ameth;
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385
		ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
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770
		if (!ameth || !ameth->old_priv_decode)
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			goto p8err;
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385
		ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len);
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385
	}
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p8err:
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603
	if (ret == NULL)
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		PEMerror(ERR_R_ASN1_LIB);
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err:
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603
	free(nm);
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603
	freezero(data, len);
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	return (ret);
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603
}
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int
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PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
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    unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
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{
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	char pem_str[80];
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156

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	if (!x->ameth || x->ameth->priv_encode)
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		return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
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		    (char *)kstr, klen, cb, u);
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	(void) snprintf(pem_str, sizeof(pem_str), "%s PRIVATE KEY",
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	    x->ameth->pem_str);
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	return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
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	    pem_str, bp, x, enc, kstr, klen, cb, u);
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104
}
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EVP_PKEY *
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PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
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{
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	char *nm = NULL;
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14
	const unsigned char *p = NULL;
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14
	unsigned char *data = NULL;
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	long len;
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	int slen;
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	EVP_PKEY *ret = NULL;
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176
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	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
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	    bp, 0, NULL))
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		return NULL;
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	p = data;
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181
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	if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) {
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		ret = EVP_PKEY_new();
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		if (!ret)
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			goto err;
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		if (!EVP_PKEY_set_type_str(ret, nm, slen) ||
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		    !ret->ameth->param_decode ||
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		    !ret->ameth->param_decode(ret, &p, len)) {
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			EVP_PKEY_free(ret);
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			ret = NULL;
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			goto err;
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		}
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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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	}
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err:
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	if (ret == NULL)
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		PEMerror(ERR_R_ASN1_LIB);
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	free(nm);
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	free(data);
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	return (ret);
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}
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int
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PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
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{
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24
	char pem_str[80];
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211

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	if (!x->ameth || !x->ameth->param_encode)
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		return 0;
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214
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	(void) snprintf(pem_str, sizeof(pem_str), "%s PARAMETERS",
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	    x->ameth->pem_str);
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	return PEM_ASN1_write_bio((i2d_of_void *)x->ameth->param_encode,
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12
	    pem_str, bp, x, NULL, NULL, 0, 0, NULL);
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12
}
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220
EVP_PKEY *
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PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
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{
223
	BIO *b;
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	EVP_PKEY *ret;
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226
144
	if ((b = BIO_new(BIO_s_file())) == NULL) {
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		PEMerror(ERR_R_BUF_LIB);
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		return (0);
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	}
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72
	BIO_set_fp(b, fp, BIO_NOCLOSE);
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	ret = PEM_read_bio_PrivateKey(b, x, cb, u);
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	BIO_free(b);
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	return (ret);
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}
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236
int
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PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
238
    unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
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{
240
	BIO *b;
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	int ret;
242
243
	if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
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		PEMerror(ERR_R_BUF_LIB);
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		return 0;
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	}
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	ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
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	BIO_free(b);
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	return ret;
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}
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