tests/vb21_api_tests.c - platform/external/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_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);


            	vb2_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 *ctx)

            
            {

            
            	return retval_vb21_load_fw_keyblock;

            
            }


            int vb21_load_fw_preamble(struct vb2_context *ctx)

            
            {

            
            	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_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);

	vb2_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 *ctx)
	{
	return retval_vb21_load_fw_keyblock;
	}

	int vb21_load_fw_preamble(struct vb2_context *ctx)
	{
	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;
	}