crypto/asymmetric_keys/pkcs7_parser.h

   1 /* PKCS#7 crypto data parser internal definitions
   2  *
   3  * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11
  12 #include <linux/oid_registry.h>
  13 #include <crypto/pkcs7.h>
  14 #include "x509_parser.h"
  15
  16 #define kenter(FMT, ...) \
  17         pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__)
  18 #define kleave(FMT, ...) \
  19         pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
  20
  21 struct pkcs7_signed_info {
  22         struct pkcs7_signed_info *next;
  23         struct x509_certificate *signer; /* Signing certificate (in msg->certs) */
  24         unsigned        index;
  25         bool            unsupported_crypto;     /* T if not usable due to missing crypto */
  26         bool            blacklisted;
  27
  28         /* Message digest - the digest of the Content Data (or NULL) */
  29         const void      *msgdigest;
  30         unsigned        msgdigest_len;
  31
  32         /* Authenticated Attribute data (or NULL) */
  33         unsigned        authattrs_len;
  34         const void      *authattrs;
  35         unsigned long   aa_set;
  36 #define sinfo_has_content_type          0
  37 #define sinfo_has_signing_time          1
  38 #define sinfo_has_message_digest        2
  39 #define sinfo_has_smime_caps            3
  40 #define sinfo_has_ms_opus_info          4
  41 #define sinfo_has_ms_statement_type     5
  42         time64_t        signing_time;
  43
  44         /* Message signature.
  45          *
  46          * This contains the generated digest of _either_ the Content Data or
  47          * the Authenticated Attributes [RFC2315 9.3].  If the latter, one of
  48          * the attributes contains the digest of the the Content Data within
  49          * it.
  50          *
  51          * THis also contains the issuing cert serial number and issuer's name
  52          * [PKCS#7 or CMS ver 1] or issuing cert's SKID [CMS ver 3].
  53          */
  54         struct public_key_signature *sig;
  55 };
  56
  57 struct pkcs7_message {
  58         struct x509_certificate *certs; /* Certificate list */
  59         struct x509_certificate *crl;   /* Revocation list */
  60         struct pkcs7_signed_info *signed_infos;
  61         u8              version;        /* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */
  62         bool            have_authattrs; /* T if have authattrs */
  63
  64         /* Content Data (or NULL) */
  65         enum OID        data_type;      /* Type of Data */
  66         size_t          data_len;       /* Length of Data */
  67         size_t          data_hdrlen;    /* Length of Data ASN.1 header */
  68         const void      *data;          /* Content Data (or 0) */
  69 };