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Side by Side Diff: firmware/lib/vboot_firmware.c

Issue 3027009: Added size param to VerifyData() (Closed) Base URL: ssh://gitrw.chromium.org/vboot_reference.git
Patch Set: Created 10 years, 5 months ago
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1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. 1 /* Copyright (c) 2010 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 * High-level firmware API for loading and verifying rewritable firmware. 5 * High-level firmware API for loading and verifying rewritable firmware.
6 * (Firmware portion) 6 * (Firmware portion)
7 */ 7 */
8 8
9 #include "load_firmware_fw.h" 9 #include "load_firmware_fw.h"
10 #include "rollback_index.h" 10 #include "rollback_index.h"
(...skipping 106 matching lines...) Expand 10 before | Expand all | Expand 10 after
117 /* Get the key for preamble/data verification from the key block. */ 117 /* Get the key for preamble/data verification from the key block. */
118 data_key = PublicKeyToRSA(&key_block->data_key); 118 data_key = PublicKeyToRSA(&key_block->data_key);
119 if (!data_key) { 119 if (!data_key) {
120 VBDEBUG(("Unable to parse data key.\n")); 120 VBDEBUG(("Unable to parse data key.\n"));
121 continue; 121 continue;
122 } 122 }
123 123
124 /* Verify the preamble, which follows the key block. */ 124 /* Verify the preamble, which follows the key block. */
125 preamble = (VbFirmwarePreambleHeader*)((uint8_t*)key_block + 125 preamble = (VbFirmwarePreambleHeader*)((uint8_t*)key_block +
126 key_block->key_block_size); 126 key_block->key_block_size);
127 if ((0 != VerifyFirmwarePreamble2(preamble, 127 if ((0 != VerifyFirmwarePreamble(preamble,
128 vblock_size - key_block->key_block_size, 128 vblock_size - key_block->key_block_size,
129 data_key))) { 129 data_key))) {
130 VBDEBUG(("Preamble verfication failed.\n")); 130 VBDEBUG(("Preamble verfication failed.\n"));
131 RSAPublicKeyFree(data_key); 131 RSAPublicKeyFree(data_key);
132 continue; 132 continue;
133 } 133 }
134 134
135 /* Check for rollback of firmware version. */ 135 /* Check for rollback of firmware version. */
136 if (key_version == tpm_key_version && 136 if (key_version == tpm_key_version &&
137 preamble->firmware_version < tpm_fw_version) { 137 preamble->firmware_version < tpm_fw_version) {
138 VBDEBUG(("Firmware version rollback detected.\n")); 138 VBDEBUG(("Firmware version rollback detected.\n"));
139 RSAPublicKeyFree(data_key); 139 RSAPublicKeyFree(data_key);
(...skipping 117 matching lines...) Expand 10 before | Expand all | Expand 10 after
257 257
258 /* Success */ 258 /* Success */
259 VBDEBUG(("Will boot firmware index %d\n", (int)params->firmware_index)); 259 VBDEBUG(("Will boot firmware index %d\n", (int)params->firmware_index));
260 return LOAD_FIRMWARE_SUCCESS; 260 return LOAD_FIRMWARE_SUCCESS;
261 } 261 }
262 262
263 /* If we're still here, no good firmware, so go to recovery mode. */ 263 /* If we're still here, no good firmware, so go to recovery mode. */
264 VBDEBUG(("Alas, no good firmware.\n")); 264 VBDEBUG(("Alas, no good firmware.\n"));
265 return LOAD_FIRMWARE_RECOVERY; 265 return LOAD_FIRMWARE_RECOVERY;
266 } 266 }
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