646 lines
18 KiB
C
646 lines
18 KiB
C
/* crypto/pkcs7/pk7_lib.c */
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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 "cryptlib.h"
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include "asn1_locl.h"
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long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
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{
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int nid;
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long ret;
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nid = OBJ_obj2nid(p7->type);
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switch (cmd) {
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/* NOTE(emilia): does not support detached digested data. */
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case PKCS7_OP_SET_DETACHED_SIGNATURE:
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if (nid == NID_pkcs7_signed) {
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ret = p7->detached = (int)larg;
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if (ret && PKCS7_type_is_data(p7->d.sign->contents)) {
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ASN1_OCTET_STRING *os;
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os = p7->d.sign->contents->d.data;
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ASN1_OCTET_STRING_free(os);
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p7->d.sign->contents->d.data = NULL;
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}
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} else {
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PKCS7err(PKCS7_F_PKCS7_CTRL,
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PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
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ret = 0;
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}
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break;
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case PKCS7_OP_GET_DETACHED_SIGNATURE:
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if (nid == NID_pkcs7_signed) {
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if (!p7->d.sign || !p7->d.sign->contents->d.ptr)
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ret = 1;
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else
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ret = 0;
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p7->detached = ret;
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} else {
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PKCS7err(PKCS7_F_PKCS7_CTRL,
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PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
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ret = 0;
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}
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_CTRL, PKCS7_R_UNKNOWN_OPERATION);
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ret = 0;
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}
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return (ret);
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}
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int PKCS7_content_new(PKCS7 *p7, int type)
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{
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PKCS7 *ret = NULL;
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if ((ret = PKCS7_new()) == NULL)
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goto err;
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if (!PKCS7_set_type(ret, type))
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goto err;
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if (!PKCS7_set_content(p7, ret))
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goto err;
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return (1);
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err:
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if (ret != NULL)
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PKCS7_free(ret);
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return (0);
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}
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int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
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{
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int i;
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i = OBJ_obj2nid(p7->type);
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switch (i) {
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case NID_pkcs7_signed:
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if (p7->d.sign->contents != NULL)
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PKCS7_free(p7->d.sign->contents);
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p7->d.sign->contents = p7_data;
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break;
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case NID_pkcs7_digest:
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if (p7->d.digest->contents != NULL)
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PKCS7_free(p7->d.digest->contents);
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p7->d.digest->contents = p7_data;
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break;
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case NID_pkcs7_data:
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case NID_pkcs7_enveloped:
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case NID_pkcs7_signedAndEnveloped:
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case NID_pkcs7_encrypted:
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default:
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PKCS7err(PKCS7_F_PKCS7_SET_CONTENT, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
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goto err;
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}
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return (1);
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err:
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return (0);
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}
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int PKCS7_set_type(PKCS7 *p7, int type)
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{
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ASN1_OBJECT *obj;
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/*
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* PKCS7_content_free(p7);
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*/
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obj = OBJ_nid2obj(type); /* will not fail */
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switch (type) {
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case NID_pkcs7_signed:
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p7->type = obj;
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if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL)
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goto err;
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if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) {
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PKCS7_SIGNED_free(p7->d.sign);
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p7->d.sign = NULL;
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goto err;
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}
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break;
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case NID_pkcs7_data:
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p7->type = obj;
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if ((p7->d.data = M_ASN1_OCTET_STRING_new()) == NULL)
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goto err;
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break;
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case NID_pkcs7_signedAndEnveloped:
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p7->type = obj;
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if ((p7->d.signed_and_enveloped = PKCS7_SIGN_ENVELOPE_new())
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== NULL)
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goto err;
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ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1);
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if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1))
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goto err;
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p7->d.signed_and_enveloped->enc_data->content_type
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= OBJ_nid2obj(NID_pkcs7_data);
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break;
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case NID_pkcs7_enveloped:
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p7->type = obj;
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if ((p7->d.enveloped = PKCS7_ENVELOPE_new())
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== NULL)
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goto err;
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if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0))
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goto err;
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p7->d.enveloped->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
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break;
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case NID_pkcs7_encrypted:
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p7->type = obj;
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if ((p7->d.encrypted = PKCS7_ENCRYPT_new())
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== NULL)
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goto err;
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if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0))
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goto err;
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p7->d.encrypted->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data);
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break;
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case NID_pkcs7_digest:
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p7->type = obj;
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if ((p7->d.digest = PKCS7_DIGEST_new())
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== NULL)
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goto err;
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if (!ASN1_INTEGER_set(p7->d.digest->version, 0))
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goto err;
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_SET_TYPE, PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
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goto err;
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}
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return (1);
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err:
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return (0);
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}
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int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
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{
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p7->type = OBJ_nid2obj(type);
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p7->d.other = other;
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return 1;
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}
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int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
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{
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int i, j, nid;
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X509_ALGOR *alg;
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STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
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STACK_OF(X509_ALGOR) *md_sk;
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i = OBJ_obj2nid(p7->type);
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switch (i) {
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case NID_pkcs7_signed:
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signer_sk = p7->d.sign->signer_info;
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md_sk = p7->d.sign->md_algs;
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break;
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case NID_pkcs7_signedAndEnveloped:
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signer_sk = p7->d.signed_and_enveloped->signer_info;
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md_sk = p7->d.signed_and_enveloped->md_algs;
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, PKCS7_R_WRONG_CONTENT_TYPE);
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return (0);
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}
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nid = OBJ_obj2nid(psi->digest_alg->algorithm);
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/* If the digest is not currently listed, add it */
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j = 0;
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for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) {
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alg = sk_X509_ALGOR_value(md_sk, i);
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if (OBJ_obj2nid(alg->algorithm) == nid) {
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j = 1;
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break;
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}
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}
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if (!j) { /* we need to add another algorithm */
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if (!(alg = X509_ALGOR_new())
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|| !(alg->parameter = ASN1_TYPE_new())) {
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X509_ALGOR_free(alg);
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PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER, ERR_R_MALLOC_FAILURE);
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return (0);
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}
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alg->algorithm = OBJ_nid2obj(nid);
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alg->parameter->type = V_ASN1_NULL;
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if (!sk_X509_ALGOR_push(md_sk, alg)) {
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X509_ALGOR_free(alg);
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return 0;
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}
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}
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if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi))
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return 0;
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return (1);
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}
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int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
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{
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int i;
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STACK_OF(X509) **sk;
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i = OBJ_obj2nid(p7->type);
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switch (i) {
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case NID_pkcs7_signed:
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sk = &(p7->d.sign->cert);
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break;
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case NID_pkcs7_signedAndEnveloped:
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sk = &(p7->d.signed_and_enveloped->cert);
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, PKCS7_R_WRONG_CONTENT_TYPE);
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return (0);
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}
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if (*sk == NULL)
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*sk = sk_X509_new_null();
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if (*sk == NULL) {
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PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
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if (!sk_X509_push(*sk, x509)) {
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X509_free(x509);
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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 PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
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{
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int i;
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STACK_OF(X509_CRL) **sk;
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i = OBJ_obj2nid(p7->type);
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switch (i) {
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case NID_pkcs7_signed:
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sk = &(p7->d.sign->crl);
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break;
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case NID_pkcs7_signedAndEnveloped:
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sk = &(p7->d.signed_and_enveloped->crl);
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break;
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default:
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PKCS7err(PKCS7_F_PKCS7_ADD_CRL, PKCS7_R_WRONG_CONTENT_TYPE);
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return (0);
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}
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if (*sk == NULL)
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*sk = sk_X509_CRL_new_null();
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if (*sk == NULL) {
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PKCS7err(PKCS7_F_PKCS7_ADD_CRL, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
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if (!sk_X509_CRL_push(*sk, crl)) {
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X509_CRL_free(crl);
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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 PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
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const EVP_MD *dgst)
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{
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int ret;
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/* We now need to add another PKCS7_SIGNER_INFO entry */
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if (!ASN1_INTEGER_set(p7i->version, 1))
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goto err;
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if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
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X509_get_issuer_name(x509)))
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goto err;
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/*
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* because ASN1_INTEGER_set is used to set a 'long' we will do things the
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* ugly way.
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*/
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M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
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if (!(p7i->issuer_and_serial->serial =
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M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
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goto err;
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/* lets keep the pkey around for a while */
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CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
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p7i->pkey = pkey;
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/* Set the algorithms */
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X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_type(dgst)),
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V_ASN1_NULL, NULL);
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if (pkey->ameth && pkey->ameth->pkey_ctrl) {
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ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, 0, p7i);
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if (ret > 0)
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return 1;
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if (ret != -2) {
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PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
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PKCS7_R_SIGNING_CTRL_FAILURE);
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return 0;
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}
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}
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PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SET,
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PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
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err:
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return 0;
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}
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PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
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const EVP_MD *dgst)
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{
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PKCS7_SIGNER_INFO *si = NULL;
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if (dgst == NULL) {
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int def_nid;
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if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0)
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goto err;
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dgst = EVP_get_digestbynid(def_nid);
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if (dgst == NULL) {
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PKCS7err(PKCS7_F_PKCS7_ADD_SIGNATURE, PKCS7_R_NO_DEFAULT_DIGEST);
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goto err;
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}
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}
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if ((si = PKCS7_SIGNER_INFO_new()) == NULL)
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goto err;
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if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst))
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goto err;
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if (!PKCS7_add_signer(p7, si))
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goto err;
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return (si);
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err:
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if (si)
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PKCS7_SIGNER_INFO_free(si);
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return (NULL);
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}
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int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
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{
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if (PKCS7_type_is_digest(p7)) {
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if (!(p7->d.digest->md->parameter = ASN1_TYPE_new())) {
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PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, ERR_R_MALLOC_FAILURE);
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return 0;
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}
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p7->d.digest->md->parameter->type = V_ASN1_NULL;
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p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
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return 1;
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}
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PKCS7err(PKCS7_F_PKCS7_SET_DIGEST, PKCS7_R_WRONG_CONTENT_TYPE);
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return 1;
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}
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STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
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{
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if (p7 == NULL || p7->d.ptr == NULL)
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return NULL;
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if (PKCS7_type_is_signed(p7)) {
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return (p7->d.sign->signer_info);
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} else if (PKCS7_type_is_signedAndEnveloped(p7)) {
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return (p7->d.signed_and_enveloped->signer_info);
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} else
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return (NULL);
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}
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void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk,
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X509_ALGOR **pdig, X509_ALGOR **psig)
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{
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if (pk)
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*pk = si->pkey;
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if (pdig)
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*pdig = si->digest_alg;
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if (psig)
|
|
*psig = si->digest_enc_alg;
|
|
}
|
|
|
|
void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc)
|
|
{
|
|
if (penc)
|
|
*penc = ri->key_enc_algor;
|
|
}
|
|
|
|
PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
|
|
{
|
|
PKCS7_RECIP_INFO *ri;
|
|
|
|
if ((ri = PKCS7_RECIP_INFO_new()) == NULL)
|
|
goto err;
|
|
if (!PKCS7_RECIP_INFO_set(ri, x509))
|
|
goto err;
|
|
if (!PKCS7_add_recipient_info(p7, ri))
|
|
goto err;
|
|
return ri;
|
|
err:
|
|
if (ri)
|
|
PKCS7_RECIP_INFO_free(ri);
|
|
return NULL;
|
|
}
|
|
|
|
int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
|
|
{
|
|
int i;
|
|
STACK_OF(PKCS7_RECIP_INFO) *sk;
|
|
|
|
i = OBJ_obj2nid(p7->type);
|
|
switch (i) {
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
sk = p7->d.signed_and_enveloped->recipientinfo;
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
sk = p7->d.enveloped->recipientinfo;
|
|
break;
|
|
default:
|
|
PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,
|
|
PKCS7_R_WRONG_CONTENT_TYPE);
|
|
return (0);
|
|
}
|
|
|
|
if (!sk_PKCS7_RECIP_INFO_push(sk, ri))
|
|
return 0;
|
|
return (1);
|
|
}
|
|
|
|
int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
|
|
{
|
|
int ret;
|
|
EVP_PKEY *pkey = NULL;
|
|
if (!ASN1_INTEGER_set(p7i->version, 0))
|
|
return 0;
|
|
if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
|
|
X509_get_issuer_name(x509)))
|
|
return 0;
|
|
|
|
M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
|
|
if (!(p7i->issuer_and_serial->serial =
|
|
M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
|
|
return 0;
|
|
|
|
pkey = X509_get_pubkey(x509);
|
|
|
|
if (!pkey || !pkey->ameth || !pkey->ameth->pkey_ctrl) {
|
|
PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
|
|
PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
|
|
goto err;
|
|
}
|
|
|
|
ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, 0, p7i);
|
|
if (ret == -2) {
|
|
PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
|
|
PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
|
|
goto err;
|
|
}
|
|
if (ret <= 0) {
|
|
PKCS7err(PKCS7_F_PKCS7_RECIP_INFO_SET,
|
|
PKCS7_R_ENCRYPTION_CTRL_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
EVP_PKEY_free(pkey);
|
|
|
|
CRYPTO_add(&x509->references, 1, CRYPTO_LOCK_X509);
|
|
p7i->cert = x509;
|
|
|
|
return 1;
|
|
|
|
err:
|
|
if (pkey)
|
|
EVP_PKEY_free(pkey);
|
|
return 0;
|
|
}
|
|
|
|
X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
|
|
{
|
|
if (PKCS7_type_is_signed(p7))
|
|
return (X509_find_by_issuer_and_serial(p7->d.sign->cert,
|
|
si->issuer_and_serial->issuer,
|
|
si->
|
|
issuer_and_serial->serial));
|
|
else
|
|
return (NULL);
|
|
}
|
|
|
|
int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
|
|
{
|
|
int i;
|
|
PKCS7_ENC_CONTENT *ec;
|
|
|
|
i = OBJ_obj2nid(p7->type);
|
|
switch (i) {
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
ec = p7->d.signed_and_enveloped->enc_data;
|
|
break;
|
|
case NID_pkcs7_enveloped:
|
|
ec = p7->d.enveloped->enc_data;
|
|
break;
|
|
default:
|
|
PKCS7err(PKCS7_F_PKCS7_SET_CIPHER, PKCS7_R_WRONG_CONTENT_TYPE);
|
|
return (0);
|
|
}
|
|
|
|
/* Check cipher OID exists and has data in it */
|
|
i = EVP_CIPHER_type(cipher);
|
|
if (i == NID_undef) {
|
|
PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,
|
|
PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
|
|
return (0);
|
|
}
|
|
|
|
ec->cipher = cipher;
|
|
return 1;
|
|
}
|
|
|
|
int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
|
|
{
|
|
ASN1_OCTET_STRING *os = NULL;
|
|
|
|
switch (OBJ_obj2nid(p7->type)) {
|
|
case NID_pkcs7_data:
|
|
os = p7->d.data;
|
|
break;
|
|
|
|
case NID_pkcs7_signedAndEnveloped:
|
|
os = p7->d.signed_and_enveloped->enc_data->enc_data;
|
|
if (os == NULL) {
|
|
os = M_ASN1_OCTET_STRING_new();
|
|
p7->d.signed_and_enveloped->enc_data->enc_data = os;
|
|
}
|
|
break;
|
|
|
|
case NID_pkcs7_enveloped:
|
|
os = p7->d.enveloped->enc_data->enc_data;
|
|
if (os == NULL) {
|
|
os = M_ASN1_OCTET_STRING_new();
|
|
p7->d.enveloped->enc_data->enc_data = os;
|
|
}
|
|
break;
|
|
|
|
case NID_pkcs7_signed:
|
|
os = p7->d.sign->contents->d.data;
|
|
break;
|
|
|
|
default:
|
|
os = NULL;
|
|
break;
|
|
}
|
|
|
|
if (os == NULL)
|
|
return 0;
|
|
|
|
os->flags |= ASN1_STRING_FLAG_NDEF;
|
|
*boundary = &os->data;
|
|
|
|
return 1;
|
|
}
|