tests/vb21_api_tests.c - mirrors/cros/chromiumos/platform/vboot_reference - Git at Google

 /* 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 "vb21_common.h"

 #include "host_key2.h"
 #include "host_signature2.h"

 #include "test_common.h"

 /* Common context for tests */
 static uint8_t workbuf[VB2_FIRMWARE_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_id test_id[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_vb21_load_fw_keyblock;
 static int retval_vb21_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 vb21_fw_preamble *pre;
 	struct vb21_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);

 	vb2api_secdata_create(&ctx);
 	vb2_secdata_init(&ctx);

 	memset(&hwcrypto_emulation_dc, 0, sizeof(hwcrypto_emulation_dc));
 	retval_hwcrypto = VB2_SUCCESS;
 	retval_vb21_load_fw_keyblock = VB2_SUCCESS;
 	retval_vb21_load_fw_preamble = VB2_SUCCESS;

 	vb2_private_key_hash(&hash_key, mock_hash_alg);

 	sd->workbuf_preamble_offset = ctx.workbuf_used;
 	pre = (struct vb21_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 = VB21_FIRMWARE_PREAMBLE_DISALLOW_HWCRYPTO;
 	else
 		pre->flags = 0;

 	for (i = 0; i < 3; i++) {
 		vb21_sign_data(&sig, mock_body, mock_body_size - 16 * i,
 			       hash_key, NULL);
 		memcpy(&sig->id, test_id + i, sizeof(sig->id));
 		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 = vb2_wb_round_up(sd->workbuf_preamble_offset +
 					   sd->workbuf_preamble_size);

 	if (t == FOR_EXTEND_HASH || t == FOR_CHECK_HASH)
 		vb21api_init_hash(&ctx, test_id, NULL);

 	if (t == FOR_CHECK_HASH)
 		vb2api_extend_hash(&ctx, mock_body, mock_body_size);
 };

 /* Mocked functions */

 int vb21_load_fw_keyblock(struct vb2_context *c)
 {
 	return retval_vb21_load_fw_keyblock;
 }

 int vb21_load_fw_preamble(struct vb2_context *c)
 {
 	return retval_vb21_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(vb21api_fw_phase3(&ctx), "phase3 good");

 	reset_common_data(FOR_MISC);
 	retval_vb21_load_fw_keyblock = VB2_ERROR_MOCK;
 	TEST_EQ(vb21api_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_vb21_load_fw_preamble = VB2_ERROR_MOCK;
 	TEST_EQ(vb21api_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 vb21_fw_preamble *pre;
 	struct vb21_signature *sig;
 	int wb_used_before;
 	uint32_t size;

 	reset_common_data(FOR_MISC);
 	pre = (struct vb21_fw_preamble *)
 		(ctx.workbuf + sd->workbuf_preamble_offset);
 	sig = (struct vb21_signature *)((uint8_t *)pre + pre->hash_offset);

 	wb_used_before = ctx.workbuf_used;
 	TEST_SUCC(vb21api_init_hash(&ctx, test_id, &size),
 		  "init hash good");
 	TEST_EQ(sd->workbuf_hash_offset, wb_used_before,
 		"hash context offset");
 	TEST_EQ(sd->workbuf_hash_size, sizeof(struct vb2_digest_context),
 		"hash context size");
 	TEST_EQ(ctx.workbuf_used,
 		vb2_wb_round_up(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(vb21api_init_hash(&ctx, test_id + 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(vb21api_init_hash(&ctx, test_id + 3, &size),
 		VB2_ERROR_API_INIT_HASH_ID, "init hash invalid id");

 	reset_common_data(FOR_MISC);
 	sd->workbuf_preamble_size = 0;
 	TEST_EQ(vb21api_init_hash(&ctx, test_id, &size),
 		VB2_ERROR_API_INIT_HASH_PREAMBLE, "init hash preamble");

 	reset_common_data(FOR_MISC);
 	ctx.workbuf_used = ctx.workbuf_size + VB2_WORKBUF_ALIGN -
 			vb2_wb_round_up(sizeof(struct vb2_digest_context));
 	TEST_EQ(vb21api_init_hash(&ctx, test_id, &size),
 		VB2_ERROR_API_INIT_HASH_WORKBUF, "init hash workbuf");

 	reset_common_data(FOR_MISC);
 	sig->hash_alg = VB2_HASH_INVALID;
 	TEST_EQ(vb21api_init_hash(&ctx, test_id, &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(vb21api_init_hash(&ctx, test_id, &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 vb21_fw_preamble *pre;
 	struct vb21_signature *sig;
 	struct vb2_digest_context *dc;

 	reset_common_data(FOR_CHECK_HASH);
 	pre = (struct vb21_fw_preamble *)
 		(ctx.workbuf + sd->workbuf_preamble_offset);
 	sig = (struct vb21_signature *)((uint8_t *)pre + pre->hash_offset);
 	dc = (struct vb2_digest_context *)
 		(ctx.workbuf + sd->workbuf_hash_offset);

 	TEST_SUCC(vb21api_check_hash(&ctx), "check hash good");

 	reset_common_data(FOR_CHECK_HASH);
 	sd->hash_tag = 0;
 	TEST_EQ(vb21api_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(vb21api_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(vb21api_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(vb21api_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(vb21api_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(vb21api_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(vb21api_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;
 }
	/* 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 "vb21_common.h"

	#include "host_key2.h"
	#include "host_signature2.h"

	#include "test_common.h"

	/* Common context for tests */
	static uint8_t workbuf[VB2_FIRMWARE_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_id test_id[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_vb21_load_fw_keyblock;
	static int retval_vb21_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 vb21_fw_preamble *pre;
	struct vb21_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);

	vb2api_secdata_create(&ctx);
	vb2_secdata_init(&ctx);

	memset(&hwcrypto_emulation_dc, 0, sizeof(hwcrypto_emulation_dc));
	retval_hwcrypto = VB2_SUCCESS;
	retval_vb21_load_fw_keyblock = VB2_SUCCESS;
	retval_vb21_load_fw_preamble = VB2_SUCCESS;

	vb2_private_key_hash(&hash_key, mock_hash_alg);

	sd->workbuf_preamble_offset = ctx.workbuf_used;
	pre = (struct vb21_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 = VB21_FIRMWARE_PREAMBLE_DISALLOW_HWCRYPTO;
	else
	pre->flags = 0;

	for (i = 0; i < 3; i++) {
	vb21_sign_data(&sig, mock_body, mock_body_size - 16 * i,
	hash_key, NULL);
	memcpy(&sig->id, test_id + i, sizeof(sig->id));
	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 = vb2_wb_round_up(sd->workbuf_preamble_offset +
	sd->workbuf_preamble_size);

	if (t == FOR_EXTEND_HASH \|\| t == FOR_CHECK_HASH)
	vb21api_init_hash(&ctx, test_id, NULL);

	if (t == FOR_CHECK_HASH)
	vb2api_extend_hash(&ctx, mock_body, mock_body_size);
	};

	/* Mocked functions */

	int vb21_load_fw_keyblock(struct vb2_context *c)
	{
	return retval_vb21_load_fw_keyblock;
	}

	int vb21_load_fw_preamble(struct vb2_context *c)
	{
	return retval_vb21_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(vb21api_fw_phase3(&ctx), "phase3 good");

	reset_common_data(FOR_MISC);
	retval_vb21_load_fw_keyblock = VB2_ERROR_MOCK;
	TEST_EQ(vb21api_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_vb21_load_fw_preamble = VB2_ERROR_MOCK;
	TEST_EQ(vb21api_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 vb21_fw_preamble *pre;
	struct vb21_signature *sig;
	int wb_used_before;
	uint32_t size;

	reset_common_data(FOR_MISC);
	pre = (struct vb21_fw_preamble *)
	(ctx.workbuf + sd->workbuf_preamble_offset);
	sig = (struct vb21_signature )((uint8_t )pre + pre->hash_offset);

	wb_used_before = ctx.workbuf_used;
	TEST_SUCC(vb21api_init_hash(&ctx, test_id, &size),
	"init hash good");
	TEST_EQ(sd->workbuf_hash_offset, wb_used_before,
	"hash context offset");
	TEST_EQ(sd->workbuf_hash_size, sizeof(struct vb2_digest_context),
	"hash context size");
	TEST_EQ(ctx.workbuf_used,
	vb2_wb_round_up(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(vb21api_init_hash(&ctx, test_id + 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(vb21api_init_hash(&ctx, test_id + 3, &size),
	VB2_ERROR_API_INIT_HASH_ID, "init hash invalid id");

	reset_common_data(FOR_MISC);
	sd->workbuf_preamble_size = 0;
	TEST_EQ(vb21api_init_hash(&ctx, test_id, &size),
	VB2_ERROR_API_INIT_HASH_PREAMBLE, "init hash preamble");

	reset_common_data(FOR_MISC);
	ctx.workbuf_used = ctx.workbuf_size + VB2_WORKBUF_ALIGN -
	vb2_wb_round_up(sizeof(struct vb2_digest_context));
	TEST_EQ(vb21api_init_hash(&ctx, test_id, &size),
	VB2_ERROR_API_INIT_HASH_WORKBUF, "init hash workbuf");

	reset_common_data(FOR_MISC);
	sig->hash_alg = VB2_HASH_INVALID;
	TEST_EQ(vb21api_init_hash(&ctx, test_id, &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(vb21api_init_hash(&ctx, test_id, &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 vb21_fw_preamble *pre;
	struct vb21_signature *sig;
	struct vb2_digest_context *dc;

	reset_common_data(FOR_CHECK_HASH);
	pre = (struct vb21_fw_preamble *)
	(ctx.workbuf + sd->workbuf_preamble_offset);
	sig = (struct vb21_signature )((uint8_t )pre + pre->hash_offset);
	dc = (struct vb2_digest_context *)
	(ctx.workbuf + sd->workbuf_hash_offset);

	TEST_SUCC(vb21api_check_hash(&ctx), "check hash good");

	reset_common_data(FOR_CHECK_HASH);
	sd->hash_tag = 0;
	TEST_EQ(vb21api_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(vb21api_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(vb21api_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(vb21api_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(vb21api_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(vb21api_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(vb21api_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;
	}