Commit | Line | Data |
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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 | ||
5d0682be SG |
19 | extern struct trusted_key_ops trusted_key_tpm_ops; |
20 | ||
d00a1c72 MZ |
21 | struct osapsess { |
22 | uint32_t handle; | |
23 | unsigned char secret[SHA1_DIGEST_SIZE]; | |
24 | unsigned char enonce[TPM_NONCE_SIZE]; | |
25 | }; | |
26 | ||
27 | /* discrete values, but have to store in uint16_t for TPM use */ | |
28 | enum { | |
29 | SEAL_keytype = 1, | |
30 | SRK_keytype = 4 | |
31 | }; | |
32 | ||
e1ea9f86 DK |
33 | int TSS_authhmac(unsigned char *digest, const unsigned char *key, |
34 | unsigned int keylen, unsigned char *h1, | |
be24b37e | 35 | unsigned char *h2, unsigned int h3, ...); |
e1ea9f86 DK |
36 | int TSS_checkhmac1(unsigned char *buffer, |
37 | const uint32_t command, | |
38 | const unsigned char *ononce, | |
39 | const unsigned char *key, | |
40 | unsigned int keylen, ...); | |
41 | ||
42 | int trusted_tpm_send(unsigned char *cmd, size_t buflen); | |
c6f61e59 | 43 | int oiap(struct tpm_buf *tb, uint32_t *handle, unsigned char *nonce); |
e1ea9f86 | 44 | |
2e19e101 SG |
45 | int tpm2_seal_trusted(struct tpm_chip *chip, |
46 | struct trusted_key_payload *payload, | |
47 | struct trusted_key_options *options); | |
48 | int tpm2_unseal_trusted(struct tpm_chip *chip, | |
49 | struct trusted_key_payload *payload, | |
50 | struct trusted_key_options *options); | |
51 | ||
d00a1c72 MZ |
52 | #define TPM_DEBUG 0 |
53 | ||
54 | #if TPM_DEBUG | |
55 | static inline void dump_options(struct trusted_key_options *o) | |
56 | { | |
5d0682be SG |
57 | pr_info("sealing key type %d\n", o->keytype); |
58 | pr_info("sealing key handle %0X\n", o->keyhandle); | |
59 | pr_info("pcrlock %d\n", o->pcrlock); | |
60 | pr_info("pcrinfo %d\n", o->pcrinfo_len); | |
d00a1c72 MZ |
61 | print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE, |
62 | 16, 1, o->pcrinfo, o->pcrinfo_len, 0); | |
63 | } | |
64 | ||
d00a1c72 MZ |
65 | static inline void dump_sess(struct osapsess *s) |
66 | { | |
67 | print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE, | |
68 | 16, 1, &s->handle, 4, 0); | |
5d0682be | 69 | pr_info("secret:\n"); |
d00a1c72 MZ |
70 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, |
71 | 16, 1, &s->secret, SHA1_DIGEST_SIZE, 0); | |
72 | pr_info("trusted-key: enonce:\n"); | |
73 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, | |
74 | 16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0); | |
75 | } | |
76 | ||
77 | static inline void dump_tpm_buf(unsigned char *buf) | |
78 | { | |
79 | int len; | |
80 | ||
5d0682be | 81 | pr_info("\ntpm buffer\n"); |
d00a1c72 MZ |
82 | len = LOAD32(buf, TPM_SIZE_OFFSET); |
83 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0); | |
84 | } | |
85 | #else | |
86 | static inline void dump_options(struct trusted_key_options *o) | |
87 | { | |
88 | } | |
89 | ||
d00a1c72 MZ |
90 | static inline void dump_sess(struct osapsess *s) |
91 | { | |
92 | } | |
93 | ||
94 | static inline void dump_tpm_buf(unsigned char *buf) | |
95 | { | |
96 | } | |
97 | #endif | |
d00a1c72 | 98 | #endif |