LXR linux/security/keys/encrypted-keys/encrypted.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ENCRYPTED_KEY_H
   3#define __ENCRYPTED_KEY_H
   4
   5#define ENCRYPTED_DEBUG 0
   6#if defined(CONFIG_TRUSTED_KEYS) || \
   7  (defined(CONFIG_TRUSTED_KEYS_MODULE) && defined(CONFIG_ENCRYPTED_KEYS_MODULE))
   8extern struct key *request_trusted_key(const char *trusted_desc,
   9                                       const u8 **master_key, size_t *master_keylen);
  10#else
  11static inline struct key *request_trusted_key(const char *trusted_desc,
  12                                              const u8 **master_key,
  13                                              size_t *master_keylen)
  14{
  15        return ERR_PTR(-EOPNOTSUPP);
  16}
  17#endif
  18
  19#if ENCRYPTED_DEBUG
  20static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
  21{
  22        print_hex_dump(KERN_ERR, "master key: ", DUMP_PREFIX_NONE, 32, 1,
  23                       master_key, master_keylen, 0);
  24}
  25
  26static inline void dump_decrypted_data(struct encrypted_key_payload *epayload)
  27{
  28        print_hex_dump(KERN_ERR, "decrypted data: ", DUMP_PREFIX_NONE, 32, 1,
  29                       epayload->decrypted_data,
  30                       epayload->decrypted_datalen, 0);
  31}
  32
  33static inline void dump_encrypted_data(struct encrypted_key_payload *epayload,
  34                                       unsigned int encrypted_datalen)
  35{
  36        print_hex_dump(KERN_ERR, "encrypted data: ", DUMP_PREFIX_NONE, 32, 1,
  37                       epayload->encrypted_data, encrypted_datalen, 0);
  38}
  39
  40static inline void dump_hmac(const char *str, const u8 *digest,
  41                             unsigned int hmac_size)
  42{
  43        if (str)
  44                pr_info("encrypted_key: %s", str);
  45        print_hex_dump(KERN_ERR, "hmac: ", DUMP_PREFIX_NONE, 32, 1, digest,
  46                       hmac_size, 0);
  47}
  48#else
  49static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
  50{
  51}
  52
  53static inline void dump_decrypted_data(struct encrypted_key_payload *epayload)
  54{
  55}
  56
  57static inline void dump_encrypted_data(struct encrypted_key_payload *epayload,
  58                                       unsigned int encrypted_datalen)
  59{
  60}
  61
  62static inline void dump_hmac(const char *str, const u8 *digest,
  63                             unsigned int hmac_size)
  64{
  65}
  66#endif
  67#endif
  68