keys/encrypted-keys/encrypted.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __ENCRYPTED_KEY_H
0003 #define __ENCRYPTED_KEY_H
0004
0005 #define ENCRYPTED_DEBUG 0
0006 #if defined(CONFIG_TRUSTED_KEYS) || \
0007   (defined(CONFIG_TRUSTED_KEYS_MODULE) && defined(CONFIG_ENCRYPTED_KEYS_MODULE))
0008 extern struct key *request_trusted_key(const char *trusted_desc,
0009                        const u8 **master_key, size_t *master_keylen);
0010 #else
0011 static inline struct key *request_trusted_key(const char *trusted_desc,
0012                           const u8 **master_key,
0013                           size_t *master_keylen)
0014 {
0015     return ERR_PTR(-EOPNOTSUPP);
0016 }
0017 #endif
0018
0019 #if ENCRYPTED_DEBUG
0020 static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
0021 {
0022     print_hex_dump(KERN_ERR, "master key: ", DUMP_PREFIX_NONE, 32, 1,
0023                master_key, master_keylen, 0);
0024 }
0025
0026 static inline void dump_decrypted_data(struct encrypted_key_payload *epayload)
0027 {
0028     print_hex_dump(KERN_ERR, "decrypted data: ", DUMP_PREFIX_NONE, 32, 1,
0029                epayload->decrypted_data,
0030                epayload->decrypted_datalen, 0);
0031 }
0032
0033 static inline void dump_encrypted_data(struct encrypted_key_payload *epayload,
0034                        unsigned int encrypted_datalen)
0035 {
0036     print_hex_dump(KERN_ERR, "encrypted data: ", DUMP_PREFIX_NONE, 32, 1,
0037                epayload->encrypted_data, encrypted_datalen, 0);
0038 }
0039
0040 static inline void dump_hmac(const char *str, const u8 *digest,
0041                  unsigned int hmac_size)
0042 {
0043     if (str)
0044         pr_info("encrypted_key: %s", str);
0045     print_hex_dump(KERN_ERR, "hmac: ", DUMP_PREFIX_NONE, 32, 1, digest,
0046                hmac_size, 0);
0047 }
0048 #else
0049 static inline void dump_master_key(const u8 *master_key, size_t master_keylen)
0050 {
0051 }
0052
0053 static inline void dump_decrypted_data(struct encrypted_key_payload *epayload)
0054 {
0055 }
0056
0057 static inline void dump_encrypted_data(struct encrypted_key_payload *epayload,
0058                        unsigned int encrypted_datalen)
0059 {
0060 }
0061
0062 static inline void dump_hmac(const char *str, const u8 *digest,
0063                  unsigned int hmac_size)
0064 {
0065 }
0066 #endif
0067 #endif