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))
   8 extern struct key *request_trusted_key(const char *trusted_desc,
   9                                        const u8 **master_key, size_t *master_keylen);
  10 #else
  11 static 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
  20 static 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
  26 static 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
  33 static 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
  40 static 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
  49 static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
  50 {
  51 }
  52
  53 static inline void dump_decrypted_data(struct encrypted_key_payload *epayload)
  54 {
  55 }
  56
  57 static inline void dump_encrypted_data(struct encrypted_key_payload *epayload,
  58                                        unsigned int encrypted_datalen)
  59 {
  60 }
  61
  62 static inline void dump_hmac(const char *str, const u8 *digest,
  63                              unsigned int hmac_size)
  64 {
  65 }
  66 #endif
  67 #endif