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