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646 lines
18 KiB
646 lines
18 KiB
/* 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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|
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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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|
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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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|
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nid = OBJ_obj2nid(p7->type); |
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|
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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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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/* |
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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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|
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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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|
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/* Set the algorithms */ |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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) |
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*psig = si->digest_enc_alg; |
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} |
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|
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void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc) |
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{ |
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if (penc) |
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*penc = ri->key_enc_algor; |
|
} |
|
|
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PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509) |
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{ |
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PKCS7_RECIP_INFO *ri; |
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|
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if ((ri = PKCS7_RECIP_INFO_new()) == NULL) |
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goto err; |
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if (!PKCS7_RECIP_INFO_set(ri, x509)) |
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goto err; |
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if (!PKCS7_add_recipient_info(p7, ri)) |
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goto err; |
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return ri; |
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err: |
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if (ri) |
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PKCS7_RECIP_INFO_free(ri); |
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return NULL; |
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} |
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|
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int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri) |
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{ |
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int i; |
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STACK_OF(PKCS7_RECIP_INFO) *sk; |
|
|
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i = OBJ_obj2nid(p7->type); |
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switch (i) { |
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case NID_pkcs7_signedAndEnveloped: |
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sk = p7->d.signed_and_enveloped->recipientinfo; |
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break; |
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case NID_pkcs7_enveloped: |
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sk = p7->d.enveloped->recipientinfo; |
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break; |
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default: |
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PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO, |
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PKCS7_R_WRONG_CONTENT_TYPE); |
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return (0); |
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} |
|
|
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if (!sk_PKCS7_RECIP_INFO_push(sk, ri)) |
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return 0; |
|
return (1); |
|
} |
|
|
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int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509) |
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{ |
|
int ret; |
|
EVP_PKEY *pkey = NULL; |
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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; |
|
}
|
|
|