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1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 1 /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
2 * Use of this source code is governed by a BSD-style license that can be | 2 * Use of this source code is governed by a BSD-style license that can be |
3 * found in the LICENSE file. | 3 * found in the LICENSE file. |
4 * | 4 * |
5 * Common functions between firmware and kernel verified boot. | 5 * Common functions between firmware and kernel verified boot. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef VBOOT_REFERENCE_VBOOT_COMMON_H_ | 8 #ifndef VBOOT_REFERENCE_VBOOT_COMMON_H_ |
9 #define VBOOT_REFERENCE_VBOOT_COMMON_H_ | 9 #define VBOOT_REFERENCE_VBOOT_COMMON_H_ |
10 | 10 |
11 #include "cryptolib.h" | 11 #include "cryptolib.h" |
12 #include "vboot_struct.h" | 12 #include "vboot_struct.h" |
13 | 13 |
14 /* Error Codes for all common functions. */ | 14 /* Error Codes for all common functions. */ |
15 enum { | 15 enum { |
16 VBOOT_SUCCESS = 0, | 16 VBOOT_SUCCESS = 0, |
17 VBOOT_KEY_BLOCK_INVALID, /* Key block internal structure is | 17 VBOOT_KEY_BLOCK_INVALID, /* Key block internal structure is |
18 * invalid, or not a key block */ | 18 * invalid, or not a key block */ |
19 VBOOT_KEY_BLOCK_SIGNATURE, /* Key block signature check failed */ | 19 VBOOT_KEY_BLOCK_SIGNATURE, /* Key block signature check failed */ |
20 VBOOT_KEY_BLOCK_HASH, /* Key block hash check failed */ | 20 VBOOT_KEY_BLOCK_HASH, /* Key block hash check failed */ |
21 VBOOT_PUBLIC_KEY_INVALID, /* Invalid public key passed to a | 21 VBOOT_PUBLIC_KEY_INVALID, /* Invalid public key passed to a |
22 * signature verficiation function. */ | 22 * signature verficiation function. */ |
23 VBOOT_PREAMBLE_INVALID, /* Preamble internal structure is | 23 VBOOT_PREAMBLE_INVALID, /* Preamble internal structure is |
24 * invalid */ | 24 * invalid */ |
25 VBOOT_PREAMBLE_SIGNATURE, /* Preamble signature check failed */ | 25 VBOOT_PREAMBLE_SIGNATURE, /* Preamble signature check failed */ |
| 26 VBOOT_SHARED_DATA_INVALID, /* Shared data is invalid. */ |
26 VBOOT_ERROR_MAX, | 27 VBOOT_ERROR_MAX, |
27 }; | 28 }; |
28 extern char* kVbootErrors[VBOOT_ERROR_MAX]; | 29 extern char* kVbootErrors[VBOOT_ERROR_MAX]; |
29 | 30 |
30 | 31 |
31 /* Return offset of ptr from base. */ | 32 /* Return offset of ptr from base. */ |
32 uint64_t OffsetOf(const void* base, const void* ptr); | 33 uint64_t OffsetOf(const void* base, const void* ptr); |
33 | 34 |
34 | 35 |
35 /* Helper functions to get data pointed to by a public key or signature. */ | 36 /* Helper functions to get data pointed to by a public key or signature. */ |
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100 | 101 |
101 | 102 |
102 /* Checks the sanity of a kernel preamble of size [size] bytes, | 103 /* Checks the sanity of a kernel preamble of size [size] bytes, |
103 * using public key [key]. | 104 * using public key [key]. |
104 * | 105 * |
105 * Returns VBOOT_SUCCESS if successful. */ | 106 * Returns VBOOT_SUCCESS if successful. */ |
106 int VerifyKernelPreamble(const VbKernelPreambleHeader* preamble, | 107 int VerifyKernelPreamble(const VbKernelPreambleHeader* preamble, |
107 uint64_t size, const RSAPublicKey* key); | 108 uint64_t size, const RSAPublicKey* key); |
108 | 109 |
109 | 110 |
| 111 /* Initialize a verified boot shared data structure. |
| 112 * |
| 113 * Returns 0 if success, non-zero if error. */ |
| 114 int VbSharedDataInit(VbSharedDataHeader* header, uint64_t size); |
| 115 |
| 116 /* Reserve [size] bytes of the shared data area. Returns the offset of the |
| 117 * reserved data from the start of the shared data buffer, or 0 if error. */ |
| 118 uint64_t VbSharedDataReserve(VbSharedDataHeader* header, uint64_t size); |
| 119 |
| 120 /* Copy the kernel subkey into the shared data. |
| 121 * |
| 122 * Returns 0 if success, non-zero if error. */ |
| 123 int VbSharedDataSetKernelKey(VbSharedDataHeader* header, |
| 124 const VbPublicKey* src); |
110 | 125 |
111 | 126 |
112 #endif /* VBOOT_REFERENCE_VBOOT_COMMON_H_ */ | 127 #endif /* VBOOT_REFERENCE_VBOOT_COMMON_H_ */ |
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