1 /* $OpenBSD: p8_pkey.c,v 1.19 2018/08/24 20:17:33 tb Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 1999. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <stdio.h> 60 #include <string.h> 61 62 #include <openssl/asn1t.h> 63 #include <openssl/x509.h> 64 65 /* Minor tweak to operation: zero private key data */ 66 static int 67 pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 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 != NULL) 73 explicit_bzero(key->pkey->data, key->pkey->length); 74 } 75 return 1; 76 } 77 78 static const ASN1_AUX PKCS8_PRIV_KEY_INFO_aux = { 79 .asn1_cb = pkey_cb, 80 }; 81 static const ASN1_TEMPLATE PKCS8_PRIV_KEY_INFO_seq_tt[] = { 82 { 83 .offset = offsetof(PKCS8_PRIV_KEY_INFO, version), 84 .field_name = "version", 85 .item = &ASN1_INTEGER_it, 86 }, 87 { 88 .offset = offsetof(PKCS8_PRIV_KEY_INFO, pkeyalg), 89 .field_name = "pkeyalg", 90 .item = &X509_ALGOR_it, 91 }, 92 { 93 .offset = offsetof(PKCS8_PRIV_KEY_INFO, pkey), 94 .field_name = "pkey", 95 .item = &ASN1_OCTET_STRING_it, 96 }, 97 { 98 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SET_OF | ASN1_TFLG_OPTIONAL, 99 .offset = offsetof(PKCS8_PRIV_KEY_INFO, attributes), 100 .field_name = "attributes", 101 .item = &X509_ATTRIBUTE_it, 102 }, 103 }; 104 105 const ASN1_ITEM PKCS8_PRIV_KEY_INFO_it = { 106 .itype = ASN1_ITYPE_SEQUENCE, 107 .utype = V_ASN1_SEQUENCE, 108 .templates = PKCS8_PRIV_KEY_INFO_seq_tt, 109 .tcount = sizeof(PKCS8_PRIV_KEY_INFO_seq_tt) / sizeof(ASN1_TEMPLATE), 110 .funcs = &PKCS8_PRIV_KEY_INFO_aux, 111 .size = sizeof(PKCS8_PRIV_KEY_INFO), 112 .sname = "PKCS8_PRIV_KEY_INFO", 113 }; 114 115 116 PKCS8_PRIV_KEY_INFO * 117 d2i_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO **a, const unsigned char **in, long len) 118 { 119 return (PKCS8_PRIV_KEY_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 120 &PKCS8_PRIV_KEY_INFO_it); 121 } 122 123 int 124 i2d_PKCS8_PRIV_KEY_INFO(PKCS8_PRIV_KEY_INFO *a, unsigned char **out) 125 { 126 return ASN1_item_i2d((ASN1_VALUE *)a, out, &PKCS8_PRIV_KEY_INFO_it); 127 } 128 129 PKCS8_PRIV_KEY_INFO * 130 PKCS8_PRIV_KEY_INFO_new(void) 131 { 132 return (PKCS8_PRIV_KEY_INFO *)ASN1_item_new(&PKCS8_PRIV_KEY_INFO_it); 133 } 134 135 void 136 PKCS8_PRIV_KEY_INFO_free(PKCS8_PRIV_KEY_INFO *a) 137 { 138 ASN1_item_free((ASN1_VALUE *)a, &PKCS8_PRIV_KEY_INFO_it); 139 } 140 141 int 142 PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj, int version, 143 int ptype, void *pval, unsigned char *penc, int penclen) 144 { 145 if (version >= 0) { 146 if (!ASN1_INTEGER_set(priv->version, version)) 147 return 0; 148 } 149 if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval)) 150 return 0; 151 if (penc != NULL) 152 ASN1_STRING_set0(priv->pkey, penc, penclen); 153 return 1; 154 } 155 156 int 157 PKCS8_pkey_get0(const ASN1_OBJECT **ppkalg, const unsigned char **pk, 158 int *ppklen, const X509_ALGOR **pa, const PKCS8_PRIV_KEY_INFO *p8) 159 { 160 if (ppkalg != NULL) 161 *ppkalg = p8->pkeyalg->algorithm; 162 if (pk != NULL) { 163 *pk = ASN1_STRING_data(p8->pkey); 164 *ppklen = ASN1_STRING_length(p8->pkey); 165 } 166 if (pa != NULL) 167 *pa = p8->pkeyalg; 168 return 1; 169 } 170 171 const STACK_OF(X509_ATTRIBUTE) * 172 PKCS8_pkey_get0_attrs(const PKCS8_PRIV_KEY_INFO *p8) 173 { 174 return p8->attributes; 175 } 176 177 int 178 PKCS8_pkey_add1_attr_by_NID(PKCS8_PRIV_KEY_INFO *p8, int nid, int type, 179 const unsigned char *bytes, int len) 180 { 181 if (X509at_add1_attr_by_NID(&p8->attributes, nid, type, bytes, 182 len) != NULL) 183 return 1; 184 return 0; 185 } 186 187