GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/asn1/p8_pkey.c Lines: 39 51 76.5 %
Date: 2017-11-13 Branches: 19 36 52.8 %

Line Branch Exec Source
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/* $OpenBSD: p8_pkey.c,v 1.17 2015/09/10 15:56:25 jsing Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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 * project 1999.
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 */
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/* ====================================================================
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 * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
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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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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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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
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    licensing@OpenSSL.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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#include <stdio.h>
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#include <string.h>
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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/* Minor tweak to operation: zero private key data */
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static int
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pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
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{
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	/* Since the structure must still be valid use ASN1_OP_FREE_PRE */
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	if (operation == ASN1_OP_FREE_PRE) {
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		PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval;
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		if (key->pkey != NULL &&
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		    key->pkey->type == V_ASN1_OCTET_STRING &&
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		    key->pkey->value.octet_string != NULL)
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			explicit_bzero(key->pkey->value.octet_string->data,
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			    key->pkey->value.octet_string->length);
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	}
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	return 1;
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}
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static const ASN1_AUX PKCS8_PRIV_KEY_INFO_aux = {
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	.asn1_cb = pkey_cb,
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};
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static const ASN1_TEMPLATE PKCS8_PRIV_KEY_INFO_seq_tt[] = {
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	{
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		.offset = offsetof(PKCS8_PRIV_KEY_INFO, version),
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		.field_name = "version",
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		.item = &ASN1_INTEGER_it,
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	},
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	{
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		.offset = offsetof(PKCS8_PRIV_KEY_INFO, pkeyalg),
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		.field_name = "pkeyalg",
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		.item = &X509_ALGOR_it,
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	},
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	{
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		.offset = offsetof(PKCS8_PRIV_KEY_INFO, pkey),
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		.field_name = "pkey",
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		.item = &ASN1_ANY_it,
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	},
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	{
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		.flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SET_OF | ASN1_TFLG_OPTIONAL,
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		.offset = offsetof(PKCS8_PRIV_KEY_INFO, attributes),
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		.field_name = "attributes",
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		.item = &X509_ATTRIBUTE_it,
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	},
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};
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const ASN1_ITEM PKCS8_PRIV_KEY_INFO_it = {
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	.itype = ASN1_ITYPE_SEQUENCE,
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	.utype = V_ASN1_SEQUENCE,
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	.templates = PKCS8_PRIV_KEY_INFO_seq_tt,
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	.tcount = sizeof(PKCS8_PRIV_KEY_INFO_seq_tt) / sizeof(ASN1_TEMPLATE),
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	.funcs = &PKCS8_PRIV_KEY_INFO_aux,
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	.size = sizeof(PKCS8_PRIV_KEY_INFO),
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	.sname = "PKCS8_PRIV_KEY_INFO",
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};
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PKCS8_PRIV_KEY_INFO *
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d2i_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO **a, const unsigned char **in, long len)
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{
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	return (PKCS8_PRIV_KEY_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
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	    &PKCS8_PRIV_KEY_INFO_it);
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}
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int
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i2d_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO *a, unsigned char **out)
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{
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	return ASN1_item_i2d((ASN1_VALUE *)a, out, &PKCS8_PRIV_KEY_INFO_it);
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}
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PKCS8_PRIV_KEY_INFO *
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PKCS8_PRIV_KEY_INFO_new(void)
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{
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	return (PKCS8_PRIV_KEY_INFO *)ASN1_item_new(&PKCS8_PRIV_KEY_INFO_it);
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}
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void
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PKCS8_PRIV_KEY_INFO_free(PKCS8_PRIV_KEY_INFO *a)
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{
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	ASN1_item_free((ASN1_VALUE *)a, &PKCS8_PRIV_KEY_INFO_it);
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}
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int
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PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj, int version,
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    int ptype, void *pval, unsigned char *penc, int penclen)
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{
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	unsigned char **ppenc = NULL;
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	if (version >= 0) {
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		if (!ASN1_INTEGER_set(priv->version, version))
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			return 0;
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	}
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	if (penc) {
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		int pmtype;
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		ASN1_OCTET_STRING *oct;
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		oct = ASN1_OCTET_STRING_new();
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		if (!oct)
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			return 0;
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		oct->data = penc;
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		ppenc = &oct->data;
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		oct->length = penclen;
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		if (priv->broken == PKCS8_NO_OCTET)
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			pmtype = V_ASN1_SEQUENCE;
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		else
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			pmtype = V_ASN1_OCTET_STRING;
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		ASN1_TYPE_set(priv->pkey, pmtype, oct);
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	}
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	if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval)) {
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		/* If call fails do not swallow 'enc' */
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		if (ppenc)
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			*ppenc = NULL;
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		return 0;
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	}
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	return 1;
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}
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int
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PKCS8_pkey_get0(ASN1_OBJECT **ppkalg, const unsigned char **pk, int *ppklen,
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    X509_ALGOR **pa, PKCS8_PRIV_KEY_INFO *p8)
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{
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	if (ppkalg)
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		*ppkalg = p8->pkeyalg->algorithm;
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	if (p8->pkey->type == V_ASN1_OCTET_STRING) {
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		p8->broken = PKCS8_OK;
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		if (pk) {
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			*pk = p8->pkey->value.octet_string->data;
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			*ppklen = p8->pkey->value.octet_string->length;
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		}
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	} else if (p8->pkey->type == V_ASN1_SEQUENCE) {
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		p8->broken = PKCS8_NO_OCTET;
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		if (pk) {
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			*pk = p8->pkey->value.sequence->data;
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			*ppklen = p8->pkey->value.sequence->length;
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		}
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	} else
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		return 0;
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	if (pa)
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		*pa = p8->pkeyalg;
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	return 1;
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}