test/integration/esys-policy-nv-changeauth.int.c

/*******************************************************************************
 * Copyright 2017-2018, Fraunhofer SIT sponsored by Infineon Technologies AG All
 * rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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#define _GNU_SOURCE
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <stdint.h>
#include "tpm20.h"
#define LOGMODULE test
#include "log/log.h"
#include "test.h"
#include "sysapi_util.h"
#include "tss2_esys.h"
#include "esys_types.h"
#include "esys_iutil.h"

/*
 * This test is intended to test the ESAPI commands PolicyAuthValue,
 * PolicyCommandCode, Esys_PolicyGetDigest, and NV_ChangeAuth.
 * First in a trial session the policy value to ensure tha auth value
 * is included in the policy session used for NV_ChangeAuth is
 * computed.
 * A NV ram space with this policy is defined afterwards.
 * With a real policy session  the auth value of this NV ram space
 * will be changed.
 */

int
test_invoke_esapi(ESYS_CONTEXT * esys_context)
{
    uint32_t r = 0;
    /*
     * Firth the policy value for changing the auth value of an NV index has to be
     * determined with a policy trial session.
     */
    ESYS_TR sessionTrial;
    TPMT_SYM_DEF symmetricTrial = {.algorithm = TPM2_ALG_AES,
                                   .keyBits = {.aes = 128},
                                   .mode = {.aes = TPM2_ALG_CFB}
    };
    TPM2B_NONCE *nonceTpmTrial;
    TPM2B_NONCE nonceCallerTrial = {
        .size = 20,
        .buffer = {11, 12, 13, 14, 15, 16, 17, 18, 19, 11,
                   21, 22, 23, 24, 25, 26, 27, 28, 29, 30}
    };

    r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE,
                              ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                              &nonceCallerTrial,
                              TPM2_SE_TRIAL, &symmetricTrial, TPM2_ALG_SHA1, &sessionTrial,
                              &nonceTpmTrial);
    goto_if_error(r, "Error: During initialization of policy trial session", error);

    r = Esys_PolicyAuthValue(esys_context,
                             sessionTrial,
                             ESYS_TR_NONE,
                             ESYS_TR_NONE,
                             ESYS_TR_NONE
                             );
    goto_if_error(r, "Error: PolicyAuthValue", error);

    r = Esys_PolicyCommandCode(esys_context,
                               sessionTrial,
                               ESYS_TR_NONE,
                               ESYS_TR_NONE,
                               ESYS_TR_NONE,
                               TPM2_CC_NV_ChangeAuth
                               );
    goto_if_error(r, "Error: PolicyCommandCode", error);

    TPM2B_DIGEST *policyDigestTrial;
    r = Esys_PolicyGetDigest(esys_context,
                             sessionTrial,
                             ESYS_TR_NONE,
                             ESYS_TR_NONE,
                             ESYS_TR_NONE,
                             &policyDigestTrial
                             );
    goto_if_error(r, "Error: PolicyGetDigest", error);

    ESYS_TR nvHandle_handle;
    TPM2B_AUTH auth = {.size = 20,
                       .buffer={10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
                                20, 21, 22, 23, 24, 25, 26, 27, 28, 29}};

    TPM2B_NV_PUBLIC publicInfo = {
        .size = 0,
        .nvPublic = {
            .nvIndex =TPM2_NV_INDEX_FIRST,
            .nameAlg = TPM2_ALG_SHA1,
            .attributes = (
                TPMA_NV_OWNERWRITE |
                TPMA_NV_AUTHWRITE |
                TPMA_NV_WRITE_STCLEAR |
                TPMA_NV_READ_STCLEAR |
                TPMA_NV_AUTHREAD |
                TPMA_NV_OWNERREAD
                ),
            .authPolicy = *policyDigestTrial,
            .dataSize = 32,
        }
    };

    r = Esys_NV_DefineSpace(esys_context,
                            ESYS_TR_RH_OWNER,
                            ESYS_TR_PASSWORD,
                            ESYS_TR_NONE,
                            ESYS_TR_NONE,
                            &auth,
                            &publicInfo,
                            &nvHandle_handle);

    goto_if_error(r, "Error esys define nv space", error);

    TPM2B_AUTH newAuth = {.size = 20,
                          .buffer={30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
                                   40, 41, 42, 43, 44, 45, 46, 47, 48, 49}};

    ESYS_TR policySession;
    TPMT_SYM_DEF policySymmetric = {.algorithm = TPM2_ALG_AES,
                                    .keyBits = {.aes = 128},
                                    .mode = {.aes = TPM2_ALG_CFB}
    };
    TPM2B_NONCE *policyNonceTpm;
    TPM2B_NONCE policyNonceCaller = {
        .size = 20,
        .buffer = {11, 12, 13, 14, 15, 16, 17, 18, 19, 11,
                   21, 22, 23, 24, 25, 26, 27, 28, 29, 30}
    };

    r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE,
                              ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                              &policyNonceCaller,
                              TPM2_SE_POLICY, &policySymmetric, TPM2_ALG_SHA1, &policySession,
                              &policyNonceTpm);
    goto_if_error(r, "Error: During initialization of policy trial session", error);


    r = Esys_PolicyAuthValue(esys_context,
                             policySession,
                             ESYS_TR_NONE,
                             ESYS_TR_NONE,
                             ESYS_TR_NONE
                             );
    goto_if_error(r, "Error: PolicyAuthValue", error);

    r = Esys_PolicyCommandCode(esys_context,
                               policySession,
                               ESYS_TR_NONE,
                               ESYS_TR_NONE,
                               ESYS_TR_NONE,
                               TPM2_CC_NV_ChangeAuth
                               );
    goto_if_error(r, "Error: PolicyCommandCode", error);

    r = Esys_NV_ChangeAuth(esys_context,
                           nvHandle_handle,
                           policySession,
                           ESYS_TR_NONE,
                           ESYS_TR_NONE,
                           &newAuth
                           );
    goto_if_error(r, "Error: NV_ChangeAuth", error);

    r = Esys_NV_UndefineSpace(esys_context,
                              ESYS_TR_RH_OWNER,
                              nvHandle_handle,
                              ESYS_TR_PASSWORD,
                              ESYS_TR_NONE,
                              ESYS_TR_NONE
                              );
    goto_if_error(r, "Error: NV_UndefineSpace", error);

    return 0;

 error:
    return 1;
}