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| 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 | |
| 3 * found in the LICENSE file. | |
| 4 * | |
| 5 * Utility for signing boot firmware images. | |
| 6 */ | |
| 7 | |
| 8 #include <stdio.h> | |
| 9 #include <stdlib.h> | |
| 10 #include <unistd.h> | |
| 11 | |
| 12 #include "file_keys.h" | |
| 13 #include "utility.h" | |
| 14 #include "host_key.h" | |
| 15 #include "host_signature.h" | |
| 16 #include "host_common.h" | |
| 17 | |
| 18 static void usage() | |
| 19 { | |
| 20 static char* help_mesg = | |
| 21 "Usage: sign_image <fw_version> <fw_key_block> <signing_key> " | |
| 22 "<kernel_public_key> <firmware_file> <output_file>\n"; | |
| 23 printf("%s", help_mesg); | |
| 24 } | |
| 25 | |
| 26 int SignAndWriteImage(uint64_t fw_version, VbKeyBlockHeader* wrapper_kb, | |
| 27 VbPrivateKey* signing_key, | |
| 28 VbPublicKey* nested_pubkey, | |
| 29 uint8_t* image, uint64_t image_size, | |
| 30 FILE* out_file) | |
| 31 { | |
| 32 VbFirmwarePreambleHeader* fw_preamble = NULL; | |
| 33 int rv = 1; | |
| 34 do { /* to be able to bail out anywhere */ | |
| 35 VbSignature* firmware_sig; | |
| 36 | |
| 37 /* sign the firmware first */ | |
| 38 firmware_sig = CalculateSignature(image, image_size, signing_key); | |
| 39 | |
| 40 /* write the original keyblock */ | |
| 41 if (fwrite(wrapper_kb, wrapper_kb->key_block_size, 1, out_file) != 1) { | |
| 42 debug("failed writing key block\n"); | |
| 43 break; | |
| 44 } | |
| 45 | |
| 46 fw_preamble = CreateFirmwarePreamble(fw_version, nested_pubkey, | |
| 47 firmware_sig, signing_key); | |
| 48 | |
| 49 if (!fw_preamble) { | |
| 50 debug("failed creating preamble\n"); | |
| 51 break; | |
| 52 } | |
| 53 | |
| 54 /* write the preamble */ | |
| 55 if (fwrite(fw_preamble, fw_preamble->preamble_size, 1, out_file) != 1) { | |
| 56 debug("failed writing fw preamble\n"); | |
| 57 break; | |
| 58 } | |
| 59 | |
| 60 /* write the image */ | |
| 61 if (fwrite(image, image_size, 1, out_file) != 1) { | |
| 62 debug("failed writing image\n"); | |
| 63 break; | |
| 64 } | |
| 65 rv = 0; | |
| 66 } while(0); | |
| 67 | |
| 68 if (fw_preamble) { | |
| 69 Free(fw_preamble); | |
| 70 } | |
| 71 | |
| 72 return rv; | |
| 73 } | |
| 74 | |
| 75 int main(int argc, char* argv[]) { | |
| 76 VbKeyBlockHeader* firmware_kb; | |
| 77 VbPublicKey* kernel_pubk; | |
| 78 uint8_t* firmware; | |
| 79 uint64_t fw_size; | |
| 80 uint64_t version; | |
| 81 VbPrivateKey* signing_key = NULL; | |
| 82 FILE* out_file; | |
| 83 int rv; | |
| 84 | |
| 85 if (argc != 7) { | |
| 86 usage(); | |
| 87 exit(1); | |
| 88 } | |
| 89 | |
| 90 version = strtoul(argv[1], 0, 0); | |
| 91 firmware_kb = KeyBlockRead(argv[2]); | |
| 92 kernel_pubk = PublicKeyRead(argv[4]); | |
| 93 firmware = BufferFromFile(argv[5], &fw_size); | |
| 94 if (firmware_kb) { | |
| 95 signing_key = PrivateKeyRead(argv[3], firmware_kb->data_key.algorithm); | |
| 96 } | |
| 97 if (!firmware_kb || !kernel_pubk || !firmware || ! signing_key) { | |
| 98 return 1; | |
| 99 } | |
| 100 | |
| 101 out_file = fopen(argv[6], "wb"); | |
| 102 if (!out_file) { | |
| 103 debug("could not open %s for writing\n"); | |
| 104 return 1; | |
| 105 } | |
| 106 | |
| 107 rv = SignAndWriteImage(version, firmware_kb, signing_key, | |
| 108 kernel_pubk, firmware, fw_size, out_file); | |
| 109 | |
| 110 fclose(out_file); | |
| 111 if (rv) { | |
| 112 unlink(argv[6]); | |
| 113 } | |
| 114 return rv; | |
| 115 } | |
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Chromium Code Reviews
Issue 2815011:
Remove unused files, and tidy the directory structure of the remaining ones. (Closed)
Base URL: ssh://gitrw.chromium.org/vboot_reference.git