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
  27         /* Message digest - the digest of the Content Data (or NULL) */
  28         const void      *msgdigest;
  29         unsigned        msgdigest_len;
  30
  31         /* Authenticated Attribute data (or NULL) */
  32         unsigned        authattrs_len;
  33         const void      *authattrs;
  34         unsigned long   aa_set;
  35 #define sinfo_has_content_type          0
  36 #define sinfo_has_signing_time          1
  37 #define sinfo_has_message_digest        2
  38 #define sinfo_has_smime_caps            3
  39 #define sinfo_has_ms_opus_info          4
  40 #define sinfo_has_ms_statement_type     5
  41         time64_t        signing_time;
  42
  43         /* Message signature.
  44          *
  45          * This contains the generated digest of _either_ the Content Data or
  46          * the Authenticated Attributes [RFC2315 9.3].  If the latter, one of
  47          * the attributes contains the digest of the the Content Data within
  48          * it.
  49          *
  50          * THis also contains the issuing cert serial number and issuer's name
  51          * [PKCS#7 or CMS ver 1] or issuing cert's SKID [CMS ver 3].
  52          */
  53         struct public_key_signature *sig;
  54 };
  55
  56 struct pkcs7_message {
  57         struct x509_certificate *certs; /* Certificate list */
  58         struct x509_certificate *crl;   /* Revocation list */
  59         struct pkcs7_signed_info *signed_infos;
  60         u8              version;        /* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */
  61         bool            have_authattrs; /* T if have authattrs */
  62
  63         /* Content Data (or NULL) */
  64         enum OID        data_type;      /* Type of Data */
  65         size_t          data_len;       /* Length of Data */
  66         size_t          data_hdrlen;    /* Length of Data ASN.1 header */
  67         const void      *data;          /* Content Data (or 0) */
  68 };