include/linux/digsig.h

   1 /*
   2  * Copyright (C) 2011 Nokia Corporation
   3  * Copyright (C) 2011 Intel Corporation
   4  *
   5  * Author:
   6  * Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
   7  *                 <dmitry.kasatkin@intel.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation, version 2 of the License.
  12  *
  13  */
  14
  15 #ifndef _DIGSIG_H
  16 #define _DIGSIG_H
  17
  18 #include <linux/key.h>
  19
  20 enum pubkey_algo {
  21         PUBKEY_ALGO_RSA,
  22         PUBKEY_ALGO_MAX,
  23 };
  24
  25 enum digest_algo {
  26         DIGEST_ALGO_SHA1,
  27         DIGEST_ALGO_SHA256,
  28         DIGEST_ALGO_MAX
  29 };
  30
  31 struct pubkey_hdr {
  32         uint8_t         version;        /* key format version */
  33         uint32_t        timestamp;      /* key made, always 0 for now */
  34         uint8_t         algo;
  35         uint8_t         nmpi;
  36         char            mpi[0];
  37 } __packed;
  38
  39 struct signature_hdr {
  40         uint8_t         version;        /* signature format version */
  41         uint32_t        timestamp;      /* signature made */
  42         uint8_t         algo;
  43         uint8_t         hash;
  44         uint8_t         keyid[8];
  45         uint8_t         nmpi;
  46         char            mpi[0];
  47 } __packed;
  48
  49 #if defined(CONFIG_SIGNATURE) || defined(CONFIG_SIGNATURE_MODULE)
  50
  51 int digsig_verify(struct key *keyring, const char *sig, int siglen,
  52                                         const char *digest, int digestlen);
  53
  54 #else
  55
  56 static inline int digsig_verify(struct key *keyring, const char *sig,
  57                                 int siglen, const char *digest, int digestlen)
  58 {
  59         return -EOPNOTSUPP;
  60 }
  61
  62 #endif /* CONFIG_SIGNATURE */
  63
  64 #endif /* _DIGSIG_H */