]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
47f9c279 SG |
2 | #ifndef __TRUSTED_TPM_H |
3 | #define __TRUSTED_TPM_H | |
4 | ||
5 | #include <keys/trusted-type.h> | |
6 | #include <linux/tpm_command.h> | |
d00a1c72 MZ |
7 | |
8 | /* implementation specific TPM constants */ | |
e1ea9f86 | 9 | #define MAX_BUF_SIZE 1024 |
d00a1c72 | 10 | #define TPM_GETRANDOM_SIZE 14 |
d00a1c72 MZ |
11 | #define TPM_SIZE_OFFSET 2 |
12 | #define TPM_RETURN_OFFSET 6 | |
13 | #define TPM_DATA_OFFSET 10 | |
14 | ||
15 | #define LOAD32(buffer, offset) (ntohl(*(uint32_t *)&buffer[offset])) | |
16 | #define LOAD32N(buffer, offset) (*(uint32_t *)&buffer[offset]) | |
17 | #define LOAD16(buffer, offset) (ntohs(*(uint16_t *)&buffer[offset])) | |
18 | ||
d00a1c72 MZ |
19 | struct osapsess { |
20 | uint32_t handle; | |
21 | unsigned char secret[SHA1_DIGEST_SIZE]; | |
22 | unsigned char enonce[TPM_NONCE_SIZE]; | |
23 | }; | |
24 | ||
25 | /* discrete values, but have to store in uint16_t for TPM use */ | |
26 | enum { | |
27 | SEAL_keytype = 1, | |
28 | SRK_keytype = 4 | |
29 | }; | |
30 | ||
e1ea9f86 DK |
31 | int TSS_authhmac(unsigned char *digest, const unsigned char *key, |
32 | unsigned int keylen, unsigned char *h1, | |
be24b37e | 33 | unsigned char *h2, unsigned int h3, ...); |
e1ea9f86 DK |
34 | int TSS_checkhmac1(unsigned char *buffer, |
35 | const uint32_t command, | |
36 | const unsigned char *ononce, | |
37 | const unsigned char *key, | |
38 | unsigned int keylen, ...); | |
39 | ||
40 | int trusted_tpm_send(unsigned char *cmd, size_t buflen); | |
c6f61e59 | 41 | int oiap(struct tpm_buf *tb, uint32_t *handle, unsigned char *nonce); |
e1ea9f86 | 42 | |
2e19e101 SG |
43 | int tpm2_seal_trusted(struct tpm_chip *chip, |
44 | struct trusted_key_payload *payload, | |
45 | struct trusted_key_options *options); | |
46 | int tpm2_unseal_trusted(struct tpm_chip *chip, | |
47 | struct trusted_key_payload *payload, | |
48 | struct trusted_key_options *options); | |
49 | ||
d00a1c72 MZ |
50 | #define TPM_DEBUG 0 |
51 | ||
52 | #if TPM_DEBUG | |
53 | static inline void dump_options(struct trusted_key_options *o) | |
54 | { | |
55 | pr_info("trusted_key: sealing key type %d\n", o->keytype); | |
56 | pr_info("trusted_key: sealing key handle %0X\n", o->keyhandle); | |
57 | pr_info("trusted_key: pcrlock %d\n", o->pcrlock); | |
58 | pr_info("trusted_key: pcrinfo %d\n", o->pcrinfo_len); | |
59 | print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE, | |
60 | 16, 1, o->pcrinfo, o->pcrinfo_len, 0); | |
61 | } | |
62 | ||
63 | static inline void dump_payload(struct trusted_key_payload *p) | |
64 | { | |
65 | pr_info("trusted_key: key_len %d\n", p->key_len); | |
66 | print_hex_dump(KERN_INFO, "key ", DUMP_PREFIX_NONE, | |
67 | 16, 1, p->key, p->key_len, 0); | |
68 | pr_info("trusted_key: bloblen %d\n", p->blob_len); | |
69 | print_hex_dump(KERN_INFO, "blob ", DUMP_PREFIX_NONE, | |
70 | 16, 1, p->blob, p->blob_len, 0); | |
71 | pr_info("trusted_key: migratable %d\n", p->migratable); | |
72 | } | |
73 | ||
74 | static inline void dump_sess(struct osapsess *s) | |
75 | { | |
76 | print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE, | |
77 | 16, 1, &s->handle, 4, 0); | |
78 | pr_info("trusted-key: secret:\n"); | |
79 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, | |
80 | 16, 1, &s->secret, SHA1_DIGEST_SIZE, 0); | |
81 | pr_info("trusted-key: enonce:\n"); | |
82 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, | |
83 | 16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0); | |
84 | } | |
85 | ||
86 | static inline void dump_tpm_buf(unsigned char *buf) | |
87 | { | |
88 | int len; | |
89 | ||
90 | pr_info("\ntrusted-key: tpm buffer\n"); | |
91 | len = LOAD32(buf, TPM_SIZE_OFFSET); | |
92 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0); | |
93 | } | |
94 | #else | |
95 | static inline void dump_options(struct trusted_key_options *o) | |
96 | { | |
97 | } | |
98 | ||
99 | static inline void dump_payload(struct trusted_key_payload *p) | |
100 | { | |
101 | } | |
102 | ||
103 | static inline void dump_sess(struct osapsess *s) | |
104 | { | |
105 | } | |
106 | ||
107 | static inline void dump_tpm_buf(unsigned char *buf) | |
108 | { | |
109 | } | |
110 | #endif | |
d00a1c72 | 111 | #endif |