lib/crypto/x509_parser.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* X.509 certificate 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 #ifndef _X509_PARSER_H
   9 #define _X509_PARSER_H
  10
  11 #include <linux/time.h>
  12 #include <crypto/public_key.h>
  13 #include <keys/asymmetric-type.h>
  14
  15 struct x509_certificate {
  16         struct x509_certificate *next;
  17         struct x509_certificate *signer;        /* Certificate that signed this one */
  18         struct public_key *pub;                 /* Public key details */
  19         struct public_key_signature *sig;       /* Signature parameters */
  20         char            *issuer;                /* Name of certificate issuer */
  21         char            *subject;               /* Name of certificate subject */
  22         struct asymmetric_key_id *id;           /* Issuer + Serial number */
  23         struct asymmetric_key_id *skid;         /* Subject + subjectKeyId (optional) */
  24         time64_t        valid_from;
  25         time64_t        valid_to;
  26         const void      *tbs;                   /* Signed data */
  27         unsigned        tbs_size;               /* Size of signed data */
  28         unsigned        raw_sig_size;           /* Size of sigature */
  29         const void      *raw_sig;               /* Signature data */
  30         const void      *raw_serial;            /* Raw serial number in ASN.1 */
  31         unsigned        raw_serial_size;
  32         unsigned        raw_issuer_size;
  33         const void      *raw_issuer;            /* Raw issuer name in ASN.1 */
  34         const void      *raw_subject;           /* Raw subject name in ASN.1 */
  35         unsigned        raw_subject_size;
  36         unsigned        raw_skid_size;
  37         const void      *raw_skid;              /* Raw subjectKeyId in ASN.1 */
  38         unsigned        index;
  39         bool            seen;                   /* Infinite recursion prevention */
  40         bool            verified;
  41         bool            self_signed;            /* T if self-signed (check unsupported_sig too) */
  42         bool            unsupported_key;        /* T if key uses unsupported crypto */
  43         bool            unsupported_sig;        /* T if signature uses unsupported crypto */
  44         bool            blacklisted;
  45 };
  46
  47 /*
  48  * x509_cert_parser.c
  49  */
  50 extern void x509_free_certificate(struct x509_certificate *cert);
  51 extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen);
  52 extern int x509_decode_time(time64_t *_t,  size_t hdrlen,
  53                             unsigned char tag,
  54                             const unsigned char *value, size_t vlen);
  55
  56 /*
  57  * x509_public_key.c
  58  */
  59 extern int x509_get_sig_params(struct x509_certificate *cert);
  60 extern int x509_check_for_self_signed(struct x509_certificate *cert);
  61 #endif /* _X509_PARSER_H */