LXR linux/crypto/asymmetric_keys/pkcs7

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/* PKCS#7 crypto data parser internal definitions
   3 *
   4 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
   5 * Written by David Howells (dhowells@redhat.com)
   6 */
   7
   8#include <linux/oid_registry.h>
   9#include <crypto/pkcs7.h>
  10#include "x509_parser.h"
  11
  12#define kenter(FMT, ...) \
  13        pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__)
  14#define kleave(FMT, ...) \
  15        pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
  16
  17struct pkcs7_signed_info {
  18        struct pkcs7_signed_info *next;
  19        struct x509_certificate *signer; /* Signing certificate (in msg->certs) */
  20        unsigned        index;
  21        bool            unsupported_crypto;     /* T if not usable due to missing crypto */
  22        bool            blacklisted;
  23
  24        /* Message digest - the digest of the Content Data (or NULL) */
  25        const void      *msgdigest;
  26        unsigned        msgdigest_len;
  27
  28        /* Authenticated Attribute data (or NULL) */
  29        unsigned        authattrs_len;
  30        const void      *authattrs;
  31        unsigned long   aa_set;
  32#define sinfo_has_content_type          0
  33#define sinfo_has_signing_time          1
  34#define sinfo_has_message_digest        2
  35#define sinfo_has_smime_caps            3
  36#define sinfo_has_ms_opus_info          4
  37#define sinfo_has_ms_statement_type     5
  38        time64_t        signing_time;
  39
  40        /* Message signature.
  41         *
  42         * This contains the generated digest of _either_ the Content Data or
  43         * the Authenticated Attributes [RFC2315 9.3].  If the latter, one of
  44         * the attributes contains the digest of the the Content Data within
  45         * it.
  46         *
  47         * THis also contains the issuing cert serial number and issuer's name
  48         * [PKCS#7 or CMS ver 1] or issuing cert's SKID [CMS ver 3].
  49         */
  50        struct public_key_signature *sig;
  51};
  52
  53struct pkcs7_message {
  54        struct x509_certificate *certs; /* Certificate list */
  55        struct x509_certificate *crl;   /* Revocation list */
  56        struct pkcs7_signed_info *signed_infos;
  57        u8              version;        /* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */
  58        bool            have_authattrs; /* T if have authattrs */
  59
  60        /* Content Data (or NULL) */
  61        enum OID        data_type;      /* Type of Data */
  62        size_t          data_len;       /* Length of Data */
  63        size_t          data_hdrlen;    /* Length of Data ASN.1 header */
  64        const void      *data;          /* Content Data (or 0) */
  65};
  66