589 lines
15 KiB
C
589 lines
15 KiB
C
/*
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* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include "crypto/asn1.h"
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#include "crypto/evp.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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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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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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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 = 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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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()) == NULL
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|| (alg->parameter = ASN1_TYPE_new()) == NULL) {
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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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X509_up_ref(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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X509_CRL_up_ref(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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ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
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if (!(p7i->issuer_and_serial->serial =
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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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EVP_PKEY_up_ref(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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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()) == NULL) {
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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)
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*psig = si->digest_enc_alg;
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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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}
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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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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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PKCS7_RECIP_INFO_free(ri);
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return NULL;
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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;
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return 1;
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}
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int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
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{
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int ret;
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EVP_PKEY *pkey = NULL;
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if (!ASN1_INTEGER_set(p7i->version, 0))
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return 0;
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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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return 0;
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ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
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if (!(p7i->issuer_and_serial->serial =
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ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
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return 0;
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pkey = X509_get0_pubkey(x509);
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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;
|
|
}
|
|
|
|
X509_up_ref(x509);
|
|
p7i->cert = x509;
|
|
|
|
return 1;
|
|
|
|
err:
|
|
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 = 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 = 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;
|
|
}
|