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
request_trusted_key(const char * trusted_desc,const u8 ** master_key,size_t * master_keylen)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
dump_master_key(const u8 * master_key,size_t master_keylen)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 
dump_decrypted_data(struct encrypted_key_payload * epayload)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 
dump_encrypted_data(struct encrypted_key_payload * epayload,unsigned int encrypted_datalen)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 
dump_hmac(const char * str,const u8 * digest,unsigned int hmac_size)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
dump_master_key(const u8 * master_key,size_t master_keylen)49 static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
50 {
51 }
52 
dump_decrypted_data(struct encrypted_key_payload * epayload)53 static inline void dump_decrypted_data(struct encrypted_key_payload *epayload)
54 {
55 }
56 
dump_encrypted_data(struct encrypted_key_payload * epayload,unsigned int encrypted_datalen)57 static inline void dump_encrypted_data(struct encrypted_key_payload *epayload,
58 				       unsigned int encrypted_datalen)
59 {
60 }
61 
dump_hmac(const char * str,const u8 * digest,unsigned int hmac_size)62 static inline void dump_hmac(const char *str, const u8 *digest,
63 			     unsigned int hmac_size)
64 {
65 }
66 #endif
67 #endif
68