| /* Copyright (c) 2014 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Tests for api library, new style structs |
| */ |
| |
| #include <stdio.h> |
| |
| #include "2sysincludes.h" |
| #include "2api.h" |
| #include "2common.h" |
| #include "2misc.h" |
| #include "2nvstorage.h" |
| #include "2rsa.h" |
| #include "2secdata.h" |
| |
| #include "vb2_common.h" |
| |
| #include "host_key2.h" |
| #include "host_signature2.h" |
| |
| #include "test_common.h" |
| |
| /* Common context for tests */ |
| static uint8_t workbuf[VB2_WORKBUF_RECOMMENDED_SIZE] |
| __attribute__ ((aligned (VB2_WORKBUF_ALIGN))); |
| static struct vb2_context ctx; |
| static struct vb2_shared_data *sd; |
| |
| static const uint8_t mock_body[320] = "Mock body"; |
| static const int mock_body_size = sizeof(mock_body); |
| static const int mock_hash_alg = VB2_HASH_SHA256; |
| static int mock_sig_size; |
| |
| static const struct vb2_guid test_guid[4] = { |
| {.raw = {0x11}}, |
| {.raw = {0x22}}, |
| {.raw = {0x33}}, |
| {.raw = {0x44}}, |
| }; |
| |
| /* Mocked function data */ |
| |
| static enum { |
| HWCRYPTO_DISABLED, |
| HWCRYPTO_ENABLED, |
| HWCRYPTO_FORBIDDEN, |
| } hwcrypto_state; |
| |
| static struct vb2_digest_context hwcrypto_emulation_dc; |
| |
| static int retval_hwcrypto; |
| static int retval_vb2_load_fw_keyblock; |
| static int retval_vb2_load_fw_preamble; |
| |
| /* Type of test to reset for */ |
| enum reset_type { |
| FOR_MISC, |
| FOR_EXTEND_HASH, |
| FOR_CHECK_HASH, |
| }; |
| |
| static void reset_common_data(enum reset_type t) |
| { |
| const struct vb2_private_key *hash_key; |
| struct vb2_fw_preamble *pre; |
| struct vb2_signature *sig; |
| uint32_t sig_offset; |
| |
| int i; |
| |
| memset(workbuf, 0xaa, sizeof(workbuf)); |
| |
| memset(&ctx, 0, sizeof(ctx)); |
| ctx.workbuf = workbuf; |
| ctx.workbuf_size = sizeof(workbuf); |
| |
| vb2_init_context(&ctx); |
| sd = vb2_get_sd(&ctx); |
| |
| vb2_nv_init(&ctx); |
| |
| vb2_secdata_create(&ctx); |
| vb2_secdata_init(&ctx); |
| |
| memset(&hwcrypto_emulation_dc, 0, sizeof(hwcrypto_emulation_dc)); |
| retval_hwcrypto = VB2_SUCCESS; |
| retval_vb2_load_fw_keyblock = VB2_SUCCESS; |
| retval_vb2_load_fw_preamble = VB2_SUCCESS; |
| |
| vb2_private_key_hash(&hash_key, mock_hash_alg); |
| |
| sd->workbuf_preamble_offset = ctx.workbuf_used; |
| pre = (struct vb2_fw_preamble *) |
| (ctx.workbuf + sd->workbuf_preamble_offset); |
| pre->hash_count = 3; |
| pre->hash_offset = sig_offset = sizeof(*pre); |
| if (hwcrypto_state == HWCRYPTO_FORBIDDEN) |
| pre->flags = VB2_FIRMWARE_PREAMBLE_DISALLOW_HWCRYPTO; |
| else |
| pre->flags = 0; |
| |
| for (i = 0; i < 3; i++) { |
| vb2_sign_data(&sig, mock_body, mock_body_size - 16 * i, |
| hash_key, NULL); |
| memcpy(&sig->guid, test_guid + i, sizeof(sig->guid)); |
| memcpy((uint8_t *)pre + sig_offset, sig, sig->c.total_size); |
| sig_offset += sig->c.total_size; |
| mock_sig_size = sig->c.total_size; |
| free(sig); |
| } |
| |
| sd->workbuf_preamble_size = sig_offset; |
| ctx.workbuf_used = sd->workbuf_preamble_offset |
| + sd->workbuf_preamble_size; |
| |
| if (t == FOR_EXTEND_HASH || t == FOR_CHECK_HASH) |
| vb2api_init_hash2(&ctx, test_guid, NULL); |
| |
| if (t == FOR_CHECK_HASH) |
| vb2api_extend_hash(&ctx, mock_body, mock_body_size); |
| }; |
| |
| /* Mocked functions */ |
| |
| int vb2_load_fw_keyblock(struct vb2_context *ctx) |
| { |
| return retval_vb2_load_fw_keyblock; |
| } |
| |
| int vb2_load_fw_preamble(struct vb2_context *ctx) |
| { |
| return retval_vb2_load_fw_preamble; |
| } |
| |
| int vb2ex_hwcrypto_digest_init(enum vb2_hash_algorithm hash_alg, |
| uint32_t data_size) |
| { |
| vb2_digest_init(&hwcrypto_emulation_dc, hash_alg); |
| |
| switch (hwcrypto_state) { |
| case HWCRYPTO_DISABLED: |
| return VB2_ERROR_EX_HWCRYPTO_UNSUPPORTED; |
| case HWCRYPTO_ENABLED: |
| if (hash_alg != mock_hash_alg) |
| return VB2_ERROR_SHA_INIT_ALGORITHM; |
| else |
| return retval_hwcrypto; |
| case HWCRYPTO_FORBIDDEN: |
| default: |
| return VB2_ERROR_UNKNOWN; |
| } |
| } |
| |
| int vb2ex_hwcrypto_digest_extend(const uint8_t *buf, |
| uint32_t size) |
| { |
| vb2_digest_extend(&hwcrypto_emulation_dc, buf, size); |
| |
| if (hwcrypto_state != HWCRYPTO_ENABLED) |
| return VB2_ERROR_UNKNOWN; |
| |
| return retval_hwcrypto; |
| } |
| |
| int vb2ex_hwcrypto_digest_finalize(uint8_t *digest, |
| uint32_t digest_size) |
| { |
| vb2_digest_finalize(&hwcrypto_emulation_dc, digest, digest_size); |
| |
| if (hwcrypto_state != HWCRYPTO_ENABLED) |
| return VB2_ERROR_UNKNOWN; |
| |
| return retval_hwcrypto; |
| } |
| |
| /* Tests */ |
| |
| static void phase3_tests(void) |
| { |
| reset_common_data(FOR_MISC); |
| TEST_SUCC(vb2api_fw_phase3(&ctx), "phase3 good"); |
| |
| reset_common_data(FOR_MISC); |
| retval_vb2_load_fw_keyblock = VB2_ERROR_MOCK; |
| TEST_EQ(vb2api_fw_phase3(&ctx), VB2_ERROR_MOCK, "phase3 keyblock"); |
| TEST_EQ(vb2_nv_get(&ctx, VB2_NV_RECOVERY_REQUEST), |
| VB2_RECOVERY_RO_INVALID_RW, " recovery reason"); |
| |
| reset_common_data(FOR_MISC); |
| retval_vb2_load_fw_preamble = VB2_ERROR_MOCK; |
| TEST_EQ(vb2api_fw_phase3(&ctx), VB2_ERROR_MOCK, "phase3 keyblock"); |
| TEST_EQ(vb2_nv_get(&ctx, VB2_NV_RECOVERY_REQUEST), |
| VB2_RECOVERY_RO_INVALID_RW, " recovery reason"); |
| } |
| |
| static void init_hash_tests(void) |
| { |
| struct vb2_fw_preamble *pre; |
| struct vb2_signature *sig; |
| int wb_used_before; |
| uint32_t size; |
| |
| reset_common_data(FOR_MISC); |
| pre = (struct vb2_fw_preamble *) |
| (ctx.workbuf + sd->workbuf_preamble_offset); |
| sig = (struct vb2_signature *)((uint8_t *)pre + pre->hash_offset); |
| |
| wb_used_before = ctx.workbuf_used; |
| TEST_SUCC(vb2api_init_hash2(&ctx, test_guid, &size), |
| "init hash good"); |
| TEST_EQ(sd->workbuf_hash_offset, |
| (wb_used_before + (VB2_WORKBUF_ALIGN - 1)) & |
| ~(VB2_WORKBUF_ALIGN - 1), |
| "hash context offset"); |
| TEST_EQ(sd->workbuf_hash_size, sizeof(struct vb2_digest_context), |
| "hash context size"); |
| TEST_EQ(ctx.workbuf_used, |
| sd->workbuf_hash_offset + sd->workbuf_hash_size, |
| "hash uses workbuf"); |
| TEST_EQ(sd->hash_tag, |
| sd->workbuf_preamble_offset + pre->hash_offset, |
| "hash signature offset"); |
| TEST_EQ(sd->hash_remaining_size, mock_body_size, "hash remaining"); |
| |
| wb_used_before = ctx.workbuf_used; |
| TEST_SUCC(vb2api_init_hash2(&ctx, test_guid + 2, NULL), |
| "init hash again"); |
| TEST_EQ(ctx.workbuf_used, wb_used_before, "init hash reuses context"); |
| TEST_EQ(sd->hash_tag, |
| sd->workbuf_preamble_offset + pre->hash_offset + |
| 2 * mock_sig_size, |
| "hash signature offset 2"); |
| |
| reset_common_data(FOR_MISC); |
| TEST_EQ(vb2api_init_hash2(&ctx, test_guid + 3, &size), |
| VB2_ERROR_API_INIT_HASH_GUID, "init hash invalid guid"); |
| |
| reset_common_data(FOR_MISC); |
| sd->workbuf_preamble_size = 0; |
| TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size), |
| VB2_ERROR_API_INIT_HASH_PREAMBLE, "init hash preamble"); |
| |
| reset_common_data(FOR_MISC); |
| ctx.workbuf_used = |
| ctx.workbuf_size - sizeof(struct vb2_digest_context) + 8; |
| TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size), |
| VB2_ERROR_API_INIT_HASH_WORKBUF, "init hash workbuf"); |
| |
| reset_common_data(FOR_MISC); |
| sig->hash_alg = VB2_HASH_INVALID; |
| TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size), |
| VB2_ERROR_SHA_INIT_ALGORITHM, "init hash algorithm"); |
| |
| if (hwcrypto_state == HWCRYPTO_ENABLED) { |
| reset_common_data(FOR_MISC); |
| retval_hwcrypto = VB2_ERROR_MOCK; |
| TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size), |
| VB2_ERROR_MOCK, "init hash use hwcrypto"); |
| } |
| } |
| |
| static void extend_hash_tests(void) |
| { |
| struct vb2_digest_context *dc; |
| |
| reset_common_data(FOR_EXTEND_HASH); |
| TEST_SUCC(vb2api_extend_hash(&ctx, mock_body, 32), |
| "hash extend good"); |
| TEST_EQ(sd->hash_remaining_size, mock_body_size - 32, |
| "hash extend remaining"); |
| TEST_SUCC(vb2api_extend_hash(&ctx, mock_body, mock_body_size - 32), |
| "hash extend again"); |
| TEST_EQ(sd->hash_remaining_size, 0, "hash extend remaining 2"); |
| |
| reset_common_data(FOR_EXTEND_HASH); |
| sd->workbuf_hash_size = 0; |
| TEST_EQ(vb2api_extend_hash(&ctx, mock_body, mock_body_size), |
| VB2_ERROR_API_EXTEND_HASH_WORKBUF, "hash extend no workbuf"); |
| |
| reset_common_data(FOR_EXTEND_HASH); |
| TEST_EQ(vb2api_extend_hash(&ctx, mock_body, mock_body_size + 1), |
| VB2_ERROR_API_EXTEND_HASH_SIZE, "hash extend too much"); |
| |
| reset_common_data(FOR_EXTEND_HASH); |
| TEST_EQ(vb2api_extend_hash(&ctx, mock_body, 0), |
| VB2_ERROR_API_EXTEND_HASH_SIZE, "hash extend empty"); |
| |
| if (hwcrypto_state == HWCRYPTO_ENABLED) { |
| reset_common_data(FOR_EXTEND_HASH); |
| retval_hwcrypto = VB2_ERROR_MOCK; |
| TEST_EQ(vb2api_extend_hash(&ctx, mock_body, mock_body_size), |
| VB2_ERROR_MOCK, "hash extend use hwcrypto"); |
| } else { |
| reset_common_data(FOR_EXTEND_HASH); |
| dc = (struct vb2_digest_context *) |
| (ctx.workbuf + sd->workbuf_hash_offset); |
| dc->hash_alg = VB2_HASH_INVALID; |
| TEST_EQ(vb2api_extend_hash(&ctx, mock_body, mock_body_size), |
| VB2_ERROR_SHA_EXTEND_ALGORITHM, "hash extend fail"); |
| } |
| } |
| |
| static void check_hash_tests(void) |
| { |
| struct vb2_fw_preamble *pre; |
| struct vb2_signature *sig; |
| struct vb2_digest_context *dc; |
| |
| reset_common_data(FOR_CHECK_HASH); |
| pre = (struct vb2_fw_preamble *) |
| (ctx.workbuf + sd->workbuf_preamble_offset); |
| sig = (struct vb2_signature *)((uint8_t *)pre + pre->hash_offset); |
| dc = (struct vb2_digest_context *) |
| (ctx.workbuf + sd->workbuf_hash_offset); |
| |
| TEST_SUCC(vb2api_check_hash(&ctx), "check hash good"); |
| |
| reset_common_data(FOR_CHECK_HASH); |
| sd->hash_tag = 0; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_API_CHECK_HASH_TAG, "check hash tag"); |
| |
| reset_common_data(FOR_CHECK_HASH); |
| sd->workbuf_hash_size = 0; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_API_CHECK_HASH_WORKBUF, "check hash no workbuf"); |
| |
| reset_common_data(FOR_CHECK_HASH); |
| sd->hash_remaining_size = 1; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_API_CHECK_HASH_SIZE, "check hash size"); |
| |
| reset_common_data(FOR_CHECK_HASH); |
| ctx.workbuf_used = ctx.workbuf_size; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_API_CHECK_HASH_WORKBUF_DIGEST, "check hash workbuf"); |
| |
| reset_common_data(FOR_CHECK_HASH); |
| *((uint8_t *)sig + sig->sig_offset) ^= 0x55; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_API_CHECK_HASH_SIG, "check hash sig"); |
| |
| if (hwcrypto_state == HWCRYPTO_ENABLED) { |
| reset_common_data(FOR_CHECK_HASH); |
| retval_hwcrypto = VB2_ERROR_MOCK; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_MOCK, "check hash use hwcrypto"); |
| } else { |
| reset_common_data(FOR_CHECK_HASH); |
| dc->hash_alg = VB2_HASH_INVALID; |
| *((uint8_t *)sig + sig->sig_offset) ^= 0x55; |
| TEST_EQ(vb2api_check_hash(&ctx), |
| VB2_ERROR_SHA_FINALIZE_ALGORITHM, "check hash finaliz"); |
| } |
| } |
| |
| int main(int argc, char* argv[]) |
| { |
| phase3_tests(); |
| |
| fprintf(stderr, "Running hash API tests without hwcrypto support...\n"); |
| hwcrypto_state = HWCRYPTO_DISABLED; |
| init_hash_tests(); |
| extend_hash_tests(); |
| check_hash_tests(); |
| |
| fprintf(stderr, "Running hash API tests with hwcrypto support...\n"); |
| hwcrypto_state = HWCRYPTO_ENABLED; |
| init_hash_tests(); |
| extend_hash_tests(); |
| check_hash_tests(); |
| |
| fprintf(stderr, "Running hash API tests with forbidden hwcrypto...\n"); |
| hwcrypto_state = HWCRYPTO_FORBIDDEN; |
| init_hash_tests(); |
| extend_hash_tests(); |
| check_hash_tests(); |
| |
| return gTestSuccess ? 0 : 255; |
| } |