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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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} |