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416 lines
11 KiB
416 lines
11 KiB
4 months ago
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/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Tests for misc library
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*/
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#include <stdio.h>
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#include "2sysincludes.h"
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#include "2api.h"
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#include "2misc.h"
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#include "2nvstorage.h"
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#include "2rsa.h"
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#include "2secdata.h"
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#include "vb2_common.h"
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#include "test_common.h"
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/* Common context for tests */
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static uint8_t workbuf[VB2_WORKBUF_RECOMMENDED_SIZE]
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__attribute__ ((aligned (VB2_WORKBUF_ALIGN)));
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static struct vb2_context cc;
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static struct vb2_shared_data *sd;
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const char mock_body[320] = "Mock body";
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const int mock_body_size = sizeof(mock_body);
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const int mock_algorithm = VB2_ALG_RSA2048_SHA256;
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const int mock_hash_alg = VB2_HASH_SHA256;
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const int mock_sig_size = 64;
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/* Mocked function data */
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static enum {
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HWCRYPTO_DISABLED,
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HWCRYPTO_ENABLED,
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HWCRYPTO_FORBIDDEN,
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} hwcrypto_state;
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static int retval_vb2_load_fw_keyblock;
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static int retval_vb2_load_fw_preamble;
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static int retval_vb2_digest_finalize;
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static int retval_vb2_verify_digest;
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/* Type of test to reset for */
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enum reset_type {
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FOR_MISC,
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FOR_EXTEND_HASH,
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FOR_CHECK_HASH,
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};
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static void reset_common_data(enum reset_type t)
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{
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struct vb2_fw_preamble *pre;
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struct vb2_packed_key *k;
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memset(workbuf, 0xaa, sizeof(workbuf));
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memset(&cc, 0, sizeof(cc));
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cc.workbuf = workbuf;
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cc.workbuf_size = sizeof(workbuf);
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vb2_init_context(&cc);
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sd = vb2_get_sd(&cc);
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vb2_nv_init(&cc);
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vb2_secdata_create(&cc);
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vb2_secdata_init(&cc);
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retval_vb2_load_fw_keyblock = VB2_SUCCESS;
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retval_vb2_load_fw_preamble = VB2_SUCCESS;
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retval_vb2_digest_finalize = VB2_SUCCESS;
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retval_vb2_verify_digest = VB2_SUCCESS;
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sd->workbuf_preamble_offset = cc.workbuf_used;
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sd->workbuf_preamble_size = sizeof(*pre);
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cc.workbuf_used = sd->workbuf_preamble_offset
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+ sd->workbuf_preamble_size;
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pre = (struct vb2_fw_preamble *)
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(cc.workbuf + sd->workbuf_preamble_offset);
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pre->body_signature.data_size = mock_body_size;
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pre->body_signature.sig_size = mock_sig_size;
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if (hwcrypto_state == HWCRYPTO_FORBIDDEN)
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pre->flags = VB2_FIRMWARE_PREAMBLE_DISALLOW_HWCRYPTO;
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else
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pre->flags = 0;
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sd->workbuf_data_key_offset = cc.workbuf_used;
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sd->workbuf_data_key_size = sizeof(*k) + 8;
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cc.workbuf_used = sd->workbuf_data_key_offset +
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sd->workbuf_data_key_size;
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k = (struct vb2_packed_key *)
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(cc.workbuf + sd->workbuf_data_key_offset);
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k->algorithm = mock_algorithm;
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if (t == FOR_EXTEND_HASH || t == FOR_CHECK_HASH)
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vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, NULL);
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if (t == FOR_CHECK_HASH)
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vb2api_extend_hash(&cc, mock_body, mock_body_size);
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};
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/* Mocked functions */
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int vb2_load_fw_keyblock(struct vb2_context *ctx)
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{
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return retval_vb2_load_fw_keyblock;
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}
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int vb2_load_fw_preamble(struct vb2_context *ctx)
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{
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return retval_vb2_load_fw_preamble;
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}
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int vb2_unpack_key(struct vb2_public_key *key,
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const uint8_t *buf,
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uint32_t size)
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{
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struct vb2_packed_key *k = (struct vb2_packed_key *)buf;
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if (size != sizeof(*k) + 8)
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return VB2_ERROR_UNPACK_KEY_SIZE;
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key->sig_alg = vb2_crypto_to_signature(k->algorithm);
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key->hash_alg = vb2_crypto_to_hash(k->algorithm);
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return VB2_SUCCESS;
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}
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int vb2ex_hwcrypto_digest_init(enum vb2_hash_algorithm hash_alg,
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uint32_t data_size)
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{
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switch (hwcrypto_state) {
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case HWCRYPTO_DISABLED:
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return VB2_ERROR_EX_HWCRYPTO_UNSUPPORTED;
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case HWCRYPTO_ENABLED:
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if (hash_alg != mock_hash_alg)
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return VB2_ERROR_SHA_INIT_ALGORITHM;
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else
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return VB2_SUCCESS;
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case HWCRYPTO_FORBIDDEN:
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default:
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return VB2_ERROR_UNKNOWN;
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}
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}
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int vb2ex_hwcrypto_digest_extend(const uint8_t *buf,
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uint32_t size)
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{
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if (hwcrypto_state != HWCRYPTO_ENABLED)
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return VB2_ERROR_UNKNOWN;
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return VB2_SUCCESS;
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}
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int vb2ex_hwcrypto_digest_finalize(uint8_t *digest,
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uint32_t digest_size)
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{
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if (hwcrypto_state != HWCRYPTO_ENABLED)
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return VB2_ERROR_UNKNOWN;
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return retval_vb2_digest_finalize;
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}
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int vb2_digest_init(struct vb2_digest_context *dc,
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enum vb2_hash_algorithm hash_alg)
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{
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if (hwcrypto_state == HWCRYPTO_ENABLED)
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return VB2_ERROR_UNKNOWN;
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if (hash_alg != mock_hash_alg)
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return VB2_ERROR_SHA_INIT_ALGORITHM;
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dc->hash_alg = hash_alg;
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dc->using_hwcrypto = 0;
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return VB2_SUCCESS;
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}
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int vb2_digest_extend(struct vb2_digest_context *dc,
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const uint8_t *buf,
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uint32_t size)
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{
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if (hwcrypto_state == HWCRYPTO_ENABLED)
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return VB2_ERROR_UNKNOWN;
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if (dc->hash_alg != mock_hash_alg)
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return VB2_ERROR_SHA_EXTEND_ALGORITHM;
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return VB2_SUCCESS;
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}
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int vb2_digest_finalize(struct vb2_digest_context *dc,
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uint8_t *digest,
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uint32_t digest_size)
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{
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if (hwcrypto_state == HWCRYPTO_ENABLED)
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return VB2_ERROR_UNKNOWN;
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return retval_vb2_digest_finalize;
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}
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uint32_t vb2_rsa_sig_size(enum vb2_signature_algorithm sig_alg)
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{
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return mock_sig_size;
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}
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int vb2_rsa_verify_digest(const struct vb2_public_key *key,
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uint8_t *sig,
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const uint8_t *digest,
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const struct vb2_workbuf *wb)
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{
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return retval_vb2_verify_digest;
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}
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/* Tests */
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static void phase3_tests(void)
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{
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reset_common_data(FOR_MISC);
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TEST_SUCC(vb2api_fw_phase3(&cc), "phase3 good");
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reset_common_data(FOR_MISC);
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retval_vb2_load_fw_keyblock = VB2_ERROR_MOCK;
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TEST_EQ(vb2api_fw_phase3(&cc), VB2_ERROR_MOCK, "phase3 keyblock");
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TEST_EQ(vb2_nv_get(&cc, VB2_NV_RECOVERY_REQUEST),
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VB2_RECOVERY_RO_INVALID_RW, " recovery reason");
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reset_common_data(FOR_MISC);
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retval_vb2_load_fw_preamble = VB2_ERROR_MOCK;
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TEST_EQ(vb2api_fw_phase3(&cc), VB2_ERROR_MOCK, "phase3 keyblock");
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TEST_EQ(vb2_nv_get(&cc, VB2_NV_RECOVERY_REQUEST),
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VB2_RECOVERY_RO_INVALID_RW, " recovery reason");
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}
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static void init_hash_tests(void)
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{
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struct vb2_packed_key *k;
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int wb_used_before;
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uint32_t size;
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/* For now, all we support is body signature hash */
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reset_common_data(FOR_MISC);
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wb_used_before = cc.workbuf_used;
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TEST_SUCC(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, &size),
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"init hash good");
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TEST_EQ(sd->workbuf_hash_offset,
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(wb_used_before + (VB2_WORKBUF_ALIGN - 1)) &
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~(VB2_WORKBUF_ALIGN - 1),
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"hash context offset");
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TEST_EQ(sd->workbuf_hash_size, sizeof(struct vb2_digest_context),
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"hash context size");
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TEST_EQ(cc.workbuf_used,
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sd->workbuf_hash_offset + sd->workbuf_hash_size,
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"hash uses workbuf");
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TEST_EQ(sd->hash_tag, VB2_HASH_TAG_FW_BODY, "hash tag");
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TEST_EQ(sd->hash_remaining_size, mock_body_size, "hash remaining");
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wb_used_before = cc.workbuf_used;
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TEST_SUCC(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, NULL),
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"init hash again");
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TEST_EQ(cc.workbuf_used, wb_used_before, "init hash reuses context");
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reset_common_data(FOR_MISC);
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_INVALID, &size),
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VB2_ERROR_API_INIT_HASH_TAG, "init hash invalid tag");
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reset_common_data(FOR_MISC);
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sd->workbuf_preamble_size = 0;
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, &size),
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VB2_ERROR_API_INIT_HASH_PREAMBLE, "init hash preamble");
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reset_common_data(FOR_MISC);
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY + 1, &size),
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VB2_ERROR_API_INIT_HASH_TAG, "init hash unknown tag");
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reset_common_data(FOR_MISC);
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cc.workbuf_used =
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cc.workbuf_size - sizeof(struct vb2_digest_context) + 8;
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, &size),
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VB2_ERROR_API_INIT_HASH_WORKBUF, "init hash workbuf");
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reset_common_data(FOR_MISC);
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sd->workbuf_data_key_size = 0;
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, &size),
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VB2_ERROR_API_INIT_HASH_DATA_KEY, "init hash data key");
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reset_common_data(FOR_MISC);
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sd->workbuf_data_key_size--;
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, &size),
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VB2_ERROR_UNPACK_KEY_SIZE, "init hash data key size");
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reset_common_data(FOR_MISC);
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k = (struct vb2_packed_key *)(cc.workbuf + sd->workbuf_data_key_offset);
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k->algorithm--;
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TEST_EQ(vb2api_init_hash(&cc, VB2_HASH_TAG_FW_BODY, &size),
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VB2_ERROR_SHA_INIT_ALGORITHM, "init hash algorithm");
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}
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static void extend_hash_tests(void)
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{
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struct vb2_digest_context *dc;
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reset_common_data(FOR_EXTEND_HASH);
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TEST_SUCC(vb2api_extend_hash(&cc, mock_body, 32),
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"hash extend good");
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TEST_EQ(sd->hash_remaining_size, mock_body_size - 32,
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"hash extend remaining");
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TEST_SUCC(vb2api_extend_hash(&cc, mock_body, mock_body_size - 32),
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"hash extend again");
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TEST_EQ(sd->hash_remaining_size, 0, "hash extend remaining 2");
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reset_common_data(FOR_EXTEND_HASH);
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sd->workbuf_hash_size = 0;
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TEST_EQ(vb2api_extend_hash(&cc, mock_body, mock_body_size),
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VB2_ERROR_API_EXTEND_HASH_WORKBUF, "hash extend no workbuf");
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reset_common_data(FOR_EXTEND_HASH);
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TEST_EQ(vb2api_extend_hash(&cc, mock_body, mock_body_size + 1),
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VB2_ERROR_API_EXTEND_HASH_SIZE, "hash extend too much");
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reset_common_data(FOR_EXTEND_HASH);
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TEST_EQ(vb2api_extend_hash(&cc, mock_body, 0),
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VB2_ERROR_API_EXTEND_HASH_SIZE, "hash extend empty");
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if (hwcrypto_state != HWCRYPTO_ENABLED) {
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reset_common_data(FOR_EXTEND_HASH);
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dc = (struct vb2_digest_context *)
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(cc.workbuf + sd->workbuf_hash_offset);
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dc->hash_alg = mock_hash_alg + 1;
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TEST_EQ(vb2api_extend_hash(&cc, mock_body, mock_body_size),
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VB2_ERROR_SHA_EXTEND_ALGORITHM, "hash extend fail");
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}
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}
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static void check_hash_tests(void)
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{
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struct vb2_fw_preamble *pre;
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reset_common_data(FOR_CHECK_HASH);
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TEST_SUCC(vb2api_check_hash(&cc), "check hash good");
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reset_common_data(FOR_CHECK_HASH);
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sd->workbuf_preamble_size = 0;
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TEST_EQ(vb2api_check_hash(&cc),
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VB2_ERROR_API_CHECK_HASH_PREAMBLE, "check hash preamble");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
sd->workbuf_hash_size = 0;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
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(&cc),
|
||
|
|
VB2_ERROR_API_CHECK_HASH_SIZE, "check hash size");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
cc.workbuf_used = cc.workbuf_size;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
VB2_ERROR_API_CHECK_HASH_WORKBUF_DIGEST, "check hash workbuf");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
retval_vb2_digest_finalize = VB2_ERROR_MOCK;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc), VB2_ERROR_MOCK, "check hash finalize");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
sd->hash_tag = VB2_HASH_TAG_INVALID;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
VB2_ERROR_API_CHECK_HASH_TAG, "check hash tag");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
sd->workbuf_data_key_size = 0;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
VB2_ERROR_API_CHECK_HASH_DATA_KEY, "check hash data key");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
sd->workbuf_data_key_size--;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
VB2_ERROR_UNPACK_KEY_SIZE, "check hash data key size");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
pre = (struct vb2_fw_preamble *)
|
||
|
|
(cc.workbuf + sd->workbuf_preamble_offset);
|
||
|
|
pre->body_signature.sig_size++;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
VB2_ERROR_VDATA_SIG_SIZE, "check hash sig size");
|
||
|
|
|
||
|
|
reset_common_data(FOR_CHECK_HASH);
|
||
|
|
retval_vb2_digest_finalize = VB2_ERROR_RSA_VERIFY_DIGEST;
|
||
|
|
TEST_EQ(vb2api_check_hash(&cc),
|
||
|
|
VB2_ERROR_RSA_VERIFY_DIGEST, "check hash finalize");
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|