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d00a1c72 MZ |
1 | #ifndef __TRUSTED_KEY_H |
2 | #define __TRUSTED_KEY_H | |
3 | ||
4 | /* implementation specific TPM constants */ | |
5 | #define MAX_PCRINFO_SIZE 64 | |
6 | #define MAX_BUF_SIZE 512 | |
7 | #define TPM_GETRANDOM_SIZE 14 | |
8 | #define TPM_OSAP_SIZE 36 | |
9 | #define TPM_OIAP_SIZE 10 | |
10 | #define TPM_SEAL_SIZE 87 | |
11 | #define TPM_UNSEAL_SIZE 104 | |
12 | #define TPM_SIZE_OFFSET 2 | |
13 | #define TPM_RETURN_OFFSET 6 | |
14 | #define TPM_DATA_OFFSET 10 | |
15 | ||
16 | #define LOAD32(buffer, offset) (ntohl(*(uint32_t *)&buffer[offset])) | |
17 | #define LOAD32N(buffer, offset) (*(uint32_t *)&buffer[offset]) | |
18 | #define LOAD16(buffer, offset) (ntohs(*(uint16_t *)&buffer[offset])) | |
19 | ||
20 | struct tpm_buf { | |
21 | int len; | |
22 | unsigned char data[MAX_BUF_SIZE]; | |
23 | }; | |
24 | ||
25 | #define INIT_BUF(tb) (tb->len = 0) | |
26 | ||
27 | struct osapsess { | |
28 | uint32_t handle; | |
29 | unsigned char secret[SHA1_DIGEST_SIZE]; | |
30 | unsigned char enonce[TPM_NONCE_SIZE]; | |
31 | }; | |
32 | ||
33 | /* discrete values, but have to store in uint16_t for TPM use */ | |
34 | enum { | |
35 | SEAL_keytype = 1, | |
36 | SRK_keytype = 4 | |
37 | }; | |
38 | ||
39 | struct trusted_key_options { | |
40 | uint16_t keytype; | |
41 | uint32_t keyhandle; | |
42 | unsigned char keyauth[SHA1_DIGEST_SIZE]; | |
43 | unsigned char blobauth[SHA1_DIGEST_SIZE]; | |
44 | uint32_t pcrinfo_len; | |
45 | unsigned char pcrinfo[MAX_PCRINFO_SIZE]; | |
46 | int pcrlock; | |
47 | }; | |
48 | ||
49 | #define TPM_DEBUG 0 | |
50 | ||
51 | #if TPM_DEBUG | |
52 | static inline void dump_options(struct trusted_key_options *o) | |
53 | { | |
54 | pr_info("trusted_key: sealing key type %d\n", o->keytype); | |
55 | pr_info("trusted_key: sealing key handle %0X\n", o->keyhandle); | |
56 | pr_info("trusted_key: pcrlock %d\n", o->pcrlock); | |
57 | pr_info("trusted_key: pcrinfo %d\n", o->pcrinfo_len); | |
58 | print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE, | |
59 | 16, 1, o->pcrinfo, o->pcrinfo_len, 0); | |
60 | } | |
61 | ||
62 | static inline void dump_payload(struct trusted_key_payload *p) | |
63 | { | |
64 | pr_info("trusted_key: key_len %d\n", p->key_len); | |
65 | print_hex_dump(KERN_INFO, "key ", DUMP_PREFIX_NONE, | |
66 | 16, 1, p->key, p->key_len, 0); | |
67 | pr_info("trusted_key: bloblen %d\n", p->blob_len); | |
68 | print_hex_dump(KERN_INFO, "blob ", DUMP_PREFIX_NONE, | |
69 | 16, 1, p->blob, p->blob_len, 0); | |
70 | pr_info("trusted_key: migratable %d\n", p->migratable); | |
71 | } | |
72 | ||
73 | static inline void dump_sess(struct osapsess *s) | |
74 | { | |
75 | print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE, | |
76 | 16, 1, &s->handle, 4, 0); | |
77 | pr_info("trusted-key: secret:\n"); | |
78 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, | |
79 | 16, 1, &s->secret, SHA1_DIGEST_SIZE, 0); | |
80 | pr_info("trusted-key: enonce:\n"); | |
81 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, | |
82 | 16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0); | |
83 | } | |
84 | ||
85 | static inline void dump_tpm_buf(unsigned char *buf) | |
86 | { | |
87 | int len; | |
88 | ||
89 | pr_info("\ntrusted-key: tpm buffer\n"); | |
90 | len = LOAD32(buf, TPM_SIZE_OFFSET); | |
91 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0); | |
92 | } | |
93 | #else | |
94 | static inline void dump_options(struct trusted_key_options *o) | |
95 | { | |
96 | } | |
97 | ||
98 | static inline void dump_payload(struct trusted_key_payload *p) | |
99 | { | |
100 | } | |
101 | ||
102 | static inline void dump_sess(struct osapsess *s) | |
103 | { | |
104 | } | |
105 | ||
106 | static inline void dump_tpm_buf(unsigned char *buf) | |
107 | { | |
108 | } | |
109 | #endif | |
110 | ||
111 | static inline void store8(struct tpm_buf *buf, const unsigned char value) | |
112 | { | |
113 | buf->data[buf->len++] = value; | |
114 | } | |
115 | ||
116 | static inline void store16(struct tpm_buf *buf, const uint16_t value) | |
117 | { | |
118 | *(uint16_t *) & buf->data[buf->len] = htons(value); | |
119 | buf->len += sizeof value; | |
120 | } | |
121 | ||
122 | static inline void store32(struct tpm_buf *buf, const uint32_t value) | |
123 | { | |
124 | *(uint32_t *) & buf->data[buf->len] = htonl(value); | |
125 | buf->len += sizeof value; | |
126 | } | |
127 | ||
128 | static inline void storebytes(struct tpm_buf *buf, const unsigned char *in, | |
129 | const int len) | |
130 | { | |
131 | memcpy(buf->data + buf->len, in, len); | |
132 | buf->len += len; | |
133 | } | |
134 | #endif |