/* SPDX-License-Identifier: BSD-2-Clause */ /*********************************************************************** * Copyright (c) 2017-2018, Intel Corporation * * All rights reserved. ***********************************************************************/ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #include "tss2_mu.h" #include "tss2_sys.h" #define LOGMODULE test #include "util/log.h" #include "test-esapi.h" #include "test.h" #include "sapi-util.h" int test_invoke (TSS2_SYS_CONTEXT *sapi_context) { TSS2_RC rc; TPM2B_ENCRYPTED_SECRET encrypted_salt = { 0 }; TPMI_SH_AUTH_SESSION session_handle = 0; TPMT_SYM_DEF symmetric = { .algorithm = TPM2_ALG_NULL }; TSS2L_SYS_AUTH_COMMAND cmd_auth = { .count = 1, .auths = {{ .sessionHandle = TPM2_RS_PW, }}, }; TSS2L_SYS_AUTH_RESPONSE rsp_auth = { 0 }; TPM2B_NONCE nonce_caller = { .size = TPM2_SHA256_DIGEST_SIZE, .buffer = { 0 } }; TPM2B_NONCE nonce_tpm = { .size = TPM2_SHA256_DIGEST_SIZE, .buffer = { 0 } }; /* First start a policy session */ LOG_INFO("Calling StartAuthSession policy session"); rc = Tss2_Sys_StartAuthSession (sapi_context, TPM2_RH_NULL, /* tpmKey */ TPM2_RH_NULL, /* bind */ NULL, /* cmdAuthsArray */ &nonce_caller, /* nonceCaller */ &encrypted_salt, /* encryptedSalt */ TPM2_SE_POLICY, /* sessionType */ &symmetric, /* symmetric */ TPM2_ALG_SHA256, /* authHash */ &session_handle, /* sessionHandle */ &nonce_tpm, /* nonceTPM */ NULL /* rspAuthsArray */ ); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("StartAuthSession failed: 0x%" PRIx32, rc); exit(1); } LOG_INFO("StartAuthSession TPM2_SE_POLICY success! Session handle: " "0x%" PRIx32, session_handle); /* * Then create an NV space where the digest required for PolicyAuthorizeNV * will be stored. */ TPM2B_NV_PUBLIC nv_public = { 0 }; TPM2B_AUTH nv_auth = { .size = TPM2_SHA256_DIGEST_SIZE, }; TPMI_RH_NV_INDEX nv_index = TPM2_HR_NV_INDEX | 0x01; nv_public.nvPublic.nvIndex = nv_index; nv_public.nvPublic.nameAlg = TPM2_ALG_SHA256; nv_public.nvPublic.attributes = TPMA_NV_PPREAD; nv_public.nvPublic.attributes |= TPMA_NV_PPWRITE; nv_public.nvPublic.attributes |= TPMA_NV_WRITE_STCLEAR; nv_public.nvPublic.attributes |= TPMA_NV_ORDERLY; nv_public.nvPublic.attributes |= TPMA_NV_OWNERREAD; nv_public.nvPublic.attributes |= TPMA_NV_OWNERWRITE; nv_public.nvPublic.authPolicy.size = 0; nv_public.nvPublic.dataSize = sizeof(TPMT_HA); cmd_auth.count = 1; cmd_auth.auths[0].sessionHandle = TPM2_RS_PW; cmd_auth.auths[0].hmac.size = 0; LOG_INFO("Calling NV_DefineSpace"); rc = Tss2_Sys_NV_DefineSpace (sapi_context, TPM2_RH_OWNER, &cmd_auth, &nv_auth, &nv_public, &rsp_auth); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("NV_DefineSpace failed: 0x%" PRIx32, rc); exit(1); } LOG_INFO("NV_DefineSpace success!, NV_index: 0x%x", nv_index); TPM2B_MAX_NV_BUFFER nv_data = { .size = 32 + 2, }; rc = Tss2_MU_INT16_Marshal(TPM2_ALG_SHA256, nv_data.buffer, TPM2_MAX_DIGEST_BUFFER, NULL); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_MU_INT16_Marshal failed: 0x%" PRIx32, rc); exit(1); } /* Write the empty policy session to the NV index */ LOG_INFO("Calling NV_Write"); rc = Tss2_Sys_NV_Write(sapi_context, TPM2_RH_OWNER, nv_index, &cmd_auth, &nv_data, 0, &rsp_auth); if (rc != TPM2_RC_SUCCESS) { LOG_ERROR("Sys_NV_Write FAILED! Response Code : 0x%x", rc); exit(1); } LOG_INFO("Sys_NV_Write success!"); /* Authorize the policy using the NV index */ LOG_INFO("Calling PolicyAuthorizeNV"); rc = Tss2_Sys_PolicyAuthorizeNV(sapi_context, TPM2_RH_OWNER, nv_index, session_handle, &cmd_auth, &rsp_auth); if (rc != TPM2_RC_SUCCESS) { LOG_ERROR("PolicyAuthorizeNV FAILED! Response Code : 0x%x", rc); exit(1); } LOG_INFO("PolicyAuthorizeNV success!"); /* Create a symmetric encryption key using the password session */ TPM2B_SENSITIVE_CREATE in_sensitive = { 0 }; TPMT_PUBLIC in_public = { 0 }; TPM2B_TEMPLATE public_template = { 0 }; TPM2B_PRIVATE out_private = { 0 }; TPM2B_PUBLIC out_public = { 0 }; TPM2B_NAME name = TPM2B_NAME_INIT; TPM2_HANDLE object_handle = 0; /* Use precomputed authPolicy for simplicity */ char auth[] = {0x06, 0x3a, 0x24, 0xdc, 0x2f, 0xc9, 0x32, 0xc3, 0xb8, 0xa0, 0x85, 0xca, 0x67, 0x27, 0x3c, 0x03, 0xa6, 0x7c, 0x11, 0x39, 0x8f, 0x2a, 0x4a, 0x13, 0xbd, 0x05, 0x37, 0xf8, 0x5f, 0x47, 0x56, 0xcb}; memcpy(in_public.authPolicy.buffer, auth, TPM2_SHA256_DIGEST_SIZE); in_public.type = TPM2_ALG_SYMCIPHER; in_public.nameAlg = TPM2_ALG_SHA256; in_public.objectAttributes |= TPMA_OBJECT_USERWITHAUTH; in_public.objectAttributes |= TPMA_OBJECT_DECRYPT; in_public.objectAttributes |= TPMA_OBJECT_SIGN_ENCRYPT; in_public.objectAttributes |= TPMA_OBJECT_FIXEDTPM; in_public.objectAttributes |= TPMA_OBJECT_FIXEDPARENT; in_public.objectAttributes |= TPMA_OBJECT_SENSITIVEDATAORIGIN; in_public.parameters.symDetail.sym.algorithm = TPM2_ALG_AES; in_public.parameters.symDetail.sym.keyBits.sym = 128; in_public.parameters.symDetail.sym.mode.sym = TPM2_ALG_CFB; in_public.authPolicy.size = TPM2_SHA256_DIGEST_SIZE; uint8_t public_buf[sizeof(in_public)] = {0}; size_t offset = 0; rc = Tss2_MU_TPMT_PUBLIC_Marshal(&in_public, public_buf, sizeof(in_public), &offset); if (rc != TPM2_RC_SUCCESS) { LOG_ERROR("Tss2_MU_TPMT_PUBLIC_Marshal FAILED! Response Code: 0x%x", rc); exit(1); } public_template.size = offset; memcpy(public_template.buffer, public_buf, offset); cmd_auth.count = 1; cmd_auth.auths[0].sessionHandle = TPM2_RS_PW; cmd_auth.auths[0].hmac.size = TPM2_SHA256_DIGEST_SIZE; /* Create a symmetric encryption key using the password session */ LOG_INFO("Calling CreateLoaded"); rc = Tss2_Sys_CreateLoaded (sapi_context, TPM2_RH_OWNER, &cmd_auth, &in_sensitive, &public_template, &object_handle, &out_private, &out_public, &name, &rsp_auth); if (rc != TPM2_RC_SUCCESS) { LOG_ERROR("CreateLoaded FAILED! Response Code: 0x%x", rc); exit(1); } LOG_INFO("success object handle: 0x%x", object_handle); TPM2B_MAX_BUFFER data_in = TPM2B_MAX_BUFFER_INIT; TPM2B_MAX_BUFFER data_out = TPM2B_MAX_BUFFER_INIT; TPM2B_IV iv_in = TPM2B_IV_INIT; TPM2B_IV iv_out = TPM2B_IV_INIT; if (RAND_bytes(data_in.buffer, TPM2_MAX_DIGEST_BUFFER) != 1) { LOG_ERROR("RAND_bytes FAILED!"); exit(1); } /* Call encrypt using the key object using the password session */ LOG_INFO("Calling EncryptDecrypt using password session 0x%x", TPM2_RS_PW); LOGBLOB_DEBUG(data_in.buffer, 32, "%s", "First 32 bytes of plain text:"); rc = TSS2_RETRY_EXP(Tss2_Sys_EncryptDecrypt (sapi_context, object_handle, &cmd_auth, NO, /* encrypt */ TPM2_ALG_NULL, &iv_in, &data_in, &data_out, &iv_out, &rsp_auth)); if (rc == TPM2_RC_COMMAND_CODE) { LOG_WARNING("Encrypt/Decrypt not supported by TPM"); rc = Tss2_Sys_NV_UndefineSpace(sapi_context, TPM2_RH_OWNER, nv_index, &cmd_auth, &rsp_auth); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_Sys_NV_UndefineSpace failed: 0x%"PRIx32, rc); return 99; /* fatal error */ } rc = Tss2_Sys_FlushContext(sapi_context, object_handle); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_Sys_FlushContext failed with 0x%"PRIx32, rc); return 99; /* fatal error */ } rc = Tss2_Sys_FlushContext(sapi_context, session_handle); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_Sys_FlushContext failed with 0x%"PRIx32, rc); return 99; /* fatal error */ } return EXIT_SKIP; } if (rc != TPM2_RC_SUCCESS) { LOG_ERROR("EncryptDecrypt FAILED! Response Code : 0x%x", rc); exit(1); } LOG_INFO("EncryptDecrypt success!"); LOGBLOB_DEBUG(data_out.buffer, 32, "%s", "First 32 bytes of cypher text:"); cmd_auth.auths[0].sessionAttributes |= TPMA_SESSION_CONTINUESESSION; cmd_auth.auths[0].sessionHandle = session_handle; cmd_auth.auths[0].hmac.size = 0; memset(data_out.buffer, '\0', TPM2_MAX_DIGEST_BUFFER); /* Call encrypt using the key object using the policy session * This should pass because we allowed it with the PolicyAuthorizeNV call */ LOG_INFO("Calling EncryptDecrypt using policy session 0x%x", session_handle); rc = TSS2_RETRY_EXP(Tss2_Sys_EncryptDecrypt (sapi_context, object_handle, &cmd_auth, NO, /* encrypt */ TPM2_ALG_NULL, &iv_in, &data_in, &data_out, &iv_out, &rsp_auth)); if (rc != TPM2_RC_SUCCESS) { LOG_INFO("EncryptDecrypt Failed rc: 0x%x", rc); exit(1); } LOG_INFO("EncryptDecrypt success!"); cmd_auth.auths[0].sessionHandle = TPM2_RS_PW; cmd_auth.auths[0].hmac.size = 0; /* Kill the NV index - this should invalidate the policy */ rc = Tss2_Sys_NV_UndefineSpace(sapi_context, TPM2_RH_OWNER, nv_index, &cmd_auth, &rsp_auth); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_Sys_NV_UndefineSpace failed: 0x%" PRIx32, rc); exit(1); } LOG_INFO("Tss2_Sys_NV_UndefineSpace for NV index 0x%" PRIx32 " success!", nv_index); /* Call encrypt using the key object using the policy session again. * This should fail because the NV index is destroyed */ cmd_auth.auths[0].sessionHandle = session_handle; memset(data_out.buffer, '\0', TPM2_MAX_DIGEST_BUFFER); LOG_INFO("Calling EncryptDecrypt again with policy session after destroying" " the NV index This should fail with RC_POLICY_FAIL"); rc = TSS2_RETRY_EXP(Tss2_Sys_EncryptDecrypt(sapi_context, object_handle, &cmd_auth, NO, /* encrypt */ TPM2_ALG_NULL, &iv_in, &data_in, &data_out, &iv_out, &rsp_auth)); if (rc != TPM2_RC_1 + TPM2_RC_S + TPM2_RC_POLICY_FAIL) { LOG_INFO("EncryptDecrypt passes unexpectedly rc: 0x%x", rc); exit(1); } LOG_INFO("EncryptDecrypt failed as expected!"); /* Clean up the session and key*/ rc = Tss2_Sys_FlushContext (sapi_context, object_handle); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_Sys_FlushContext failed: 0x%" PRIx32, rc); exit(1); } LOG_INFO("Flushed context for object handle: 0x%" PRIx32 " success!", object_handle); rc = Tss2_Sys_FlushContext (sapi_context, session_handle); if (rc != TSS2_RC_SUCCESS) { LOG_ERROR("Tss2_Sys_FlushContext failed: 0x%" PRIx32, rc); exit(1); } LOG_INFO("Flushed context for session handle: 0x%" PRIx32 " success!", session_handle); return 0; }