1/* p8_pkey.c */ 2/* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 1999. 5 */ 6/* ==================================================================== 7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59 60#include <stdio.h> 61#include "cryptlib.h" 62#include <openssl/asn1t.h> 63#include <openssl/x509.h> 64 65/* Minor tweak to operation: zero private key data */ 66static int pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 67 void *exarg) 68{ 69 /* Since the structure must still be valid use ASN1_OP_FREE_PRE */ 70 if (operation == ASN1_OP_FREE_PRE) { 71 PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval; 72 if (key->pkey && key->pkey->type == V_ASN1_OCTET_STRING 73 && key->pkey->value.octet_string != NULL) 74 OPENSSL_cleanse(key->pkey->value.octet_string->data, 75 key->pkey->value.octet_string->length); 76 } 77 return 1; 78} 79 80ASN1_SEQUENCE_cb(PKCS8_PRIV_KEY_INFO, pkey_cb) = { 81 ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, version, ASN1_INTEGER), 82 ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkeyalg, X509_ALGOR), 83 ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkey, ASN1_ANY), 84 ASN1_IMP_SET_OF_OPT(PKCS8_PRIV_KEY_INFO, attributes, X509_ATTRIBUTE, 0) 85} ASN1_SEQUENCE_END_cb(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO) 86 87IMPLEMENT_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO) 88 89int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj, 90 int version, 91 int ptype, void *pval, unsigned char *penc, int penclen) 92{ 93 unsigned char **ppenc = NULL; 94 if (version >= 0) { 95 if (!ASN1_INTEGER_set(priv->version, version)) 96 return 0; 97 } 98 if (penc) { 99 int pmtype; 100 ASN1_OCTET_STRING *oct; 101 oct = ASN1_OCTET_STRING_new(); 102 if (!oct) 103 return 0; 104 oct->data = penc; 105 ppenc = &oct->data; 106 oct->length = penclen; 107 if (priv->broken == PKCS8_NO_OCTET) 108 pmtype = V_ASN1_SEQUENCE; 109 else 110 pmtype = V_ASN1_OCTET_STRING; 111 ASN1_TYPE_set(priv->pkey, pmtype, oct); 112 } 113 if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval)) { 114 /* If call fails do not swallow 'enc' */ 115 if (ppenc) 116 *ppenc = NULL; 117 return 0; 118 } 119 return 1; 120} 121 122int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg, 123 const unsigned char **pk, int *ppklen, 124 X509_ALGOR **pa, PKCS8_PRIV_KEY_INFO *p8) 125{ 126 if (ppkalg) 127 *ppkalg = p8->pkeyalg->algorithm; 128 if (p8->pkey->type == V_ASN1_OCTET_STRING) { 129 p8->broken = PKCS8_OK; 130 if (pk) { 131 *pk = p8->pkey->value.octet_string->data; 132 *ppklen = p8->pkey->value.octet_string->length; 133 } 134 } else if (p8->pkey->type == V_ASN1_SEQUENCE) { 135 p8->broken = PKCS8_NO_OCTET; 136 if (pk) { 137 *pk = p8->pkey->value.sequence->data; 138 *ppklen = p8->pkey->value.sequence->length; 139 } 140 } else 141 return 0; 142 if (pa) 143 *pa = p8->pkeyalg; 144 return 1; 145} 146