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