text: /* SPDX-License-Identifier: BSD-2-Clause */
  /*******************************************************************************
   * Copyright 2017-2018, Fraunhofer SIT sponsored by Infineon Technologies AG
   * All rights reserved.
   *******************************************************************************/
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  #include <stdlib.h>
  
  #include "tss2_esys.h"
  
  #include "esys_iutil.h"
  #include "test-esapi.h"
  #define LOGMODULE test
  #include "util/log.h"
  #include "util/aux_util.h"
  
  /** This test is intended to test Esys_ECDH_ZGen.
   *
   * The test is based on an ECC key created with Esys_CreatePrimary
   * and data produced by the command Esys_EC_Ephemeral.
   *
   * Tested ESAPI commands:
   *  - Esys_CreatePrimary() (M)
   *  - Esys_ECDH_ZGen() (M)
   *  - Esys_EC_Ephemeral() (F)
   *  - Esys_FlushContext() (M)
   *  - Esys_StartAuthSession() (M)
   *  - Esys_ZGen_2Phase() (O)
   *
   * @param[in,out] esys_context The ESYS_CONTEXT.
   * @retval EXIT_FAILURE
   * @retval EXIT_SKIP
   * @retval EXIT_SUCCESS
   */
  
  int
  test_esys_zgen_2phase(ESYS_CONTEXT * esys_context)
  {
      TSS2_RC r;
      ESYS_TR eccHandle = ESYS_TR_NONE;
      int failure_return = EXIT_FAILURE;
      ESYS_TR session = ESYS_TR_NONE;
      TPMT_SYM_DEF symmetric = {
          .algorithm = TPM2_ALG_AES,
          .keyBits = { .aes = 128 },
          .mode = {.aes = TPM2_ALG_CFB}
      };
      TPMA_SESSION sessionAttributes;
      TPM2B_NONCE nonceCaller = {
          .size = 20,
          .buffer = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
                     11, 12, 13, 14, 15, 16, 17, 18, 19, 20}
      };
  
      memset(&sessionAttributes, 0, sizeof sessionAttributes);
  
      r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE,
                                ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
                                &nonceCaller,
                                TPM2_SE_HMAC, &symmetric, TPM2_ALG_SHA1,
                                &session);
      goto_if_error(r, "Error: During initialization of session", error);
  
      TPM2B_SENSITIVE_CREATE inSensitive = {
          .size = 0,
          .sensitive = {
              .userAuth = {
                   .size = 0,
                   .buffer = {0}
               },
              .data = {
                   .size = 0,
                   .buffer = {0}
               }
          }
      };
      TPM2B_PUBLIC inPublicECC = {
          .size = 0,
          .publicArea = {
              .type = TPM2_ALG_ECC,
              .nameAlg = TPM2_ALG_SHA1,
              .objectAttributes = (TPMA_OBJECT_USERWITHAUTH |
                                   TPMA_OBJECT_DECRYPT |
                                   TPMA_OBJECT_FIXEDTPM |
                                   TPMA_OBJECT_FIXEDPARENT |
                                   TPMA_OBJECT_SENSITIVEDATAORIGIN),
              .authPolicy = {
                   .size = 0,
               },
              .parameters.eccDetail = {
                   .symmetric = {
                       .algorithm = TPM2_ALG_NULL,
                       .keyBits.aes = 128,
                       .mode.aes = TPM2_ALG_CFB,
                   },
                   .scheme = {
                        .scheme = TPM2_ALG_ECDH,
                        .details = {.ecdh = {.hashAlg = TPM2_ALG_SHA1}
                        }
                    },
                   .curveID = TPM2_ECC_NIST_P256,
                   .kdf = {.scheme = TPM2_ALG_NULL }
               },
              .unique.ecc = {
                   .x = {.size = 0,.buffer = {}},
                   .y = {.size = 0,.buffer = {}}
               }
              ,
          }
      };
      LOG_INFO("\nECC key will be created.");
      TPM2B_PUBLIC inPublic = inPublicECC;
  
      TPM2B_DATA outsideInfo = {
          .size = 0,
          .buffer = {}
          ,
      };
  
      TPML_PCR_SELECTION creationPCR = {
          .count = 0,
      };
  
      TPM2B_AUTH authValue = {
          .size = 0,
          .buffer = {}
      };
  
      r = Esys_TR_SetAuth(esys_context, ESYS_TR_RH_OWNER, &authValue);
      goto_if_error(r, "Error: TR_SetAuth", error);
  
      TPM2B_PUBLIC *outPublic;
      TPM2B_CREATION_DATA *creationData;
      TPM2B_DIGEST *creationHash;
      TPMT_TK_CREATION *creationTicket;
  
      r = Esys_CreatePrimary(esys_context, ESYS_TR_RH_OWNER, session,
                             ESYS_TR_NONE, ESYS_TR_NONE, &inSensitive, &inPublic,
                             &outsideInfo, &creationPCR, &eccHandle,
                             &outPublic, &creationData, &creationHash,
                             &creationTicket);
      goto_if_error(r, "Error esapi create primary", error);
  
      TPMI_ECC_CURVE curveID = TPM2_ECC_NIST_P256;
      TPM2B_ECC_POINT *Q;
      UINT16 counter;
  
      r = Esys_EC_Ephemeral(
          esys_context,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          curveID,
          &Q,
          &counter);
  
      if ((r == TPM2_RC_COMMAND_CODE) ||
          (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_RC_LAYER)) ||
          (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_TPM_RC_LAYER))) {
          LOG_WARNING("Command TPM2_Ephemeral not supported by TPM.");
          failure_return = EXIT_SKIP;
          goto error;
      }
  
      goto_if_error(r, "Error: EC_Ephemeral", error);
  
      TPM2B_ECC_POINT inQsB = {
          .size = 0,
          .point = outPublic->publicArea.unique.ecc
      };
      TPM2B_ECC_POINT inQeB = *Q;
      TPMI_ECC_KEY_EXCHANGE inScheme = TPM2_ALG_ECDH;
      TPM2B_ECC_POINT *outZ1;
      TPM2B_ECC_POINT *outZ2;
  
      r = Esys_ZGen_2Phase(
          esys_context,
          eccHandle,
          ESYS_TR_PASSWORD,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          &inQsB,
          &inQeB,
          inScheme,
          counter,
          &outZ1,
          &outZ2);
  
      if ((r == TPM2_RC_COMMAND_CODE) ||
          (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_RC_LAYER)) ||
          (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_TPM_RC_LAYER))) {
          LOG_WARNING("Command TPM2_ZGen_2Phase not supported by TPM.");
          failure_return = EXIT_SKIP;
          goto error;
      }
  
      goto_if_error(r, "Error: ZGen_2Phase", error);
  
      r = Esys_FlushContext(esys_context, eccHandle);
      goto_if_error(r, "Flushing context", error);
  
      r = Esys_FlushContext(esys_context, session);
      goto_if_error(r, "Flushing context", error);
  
      return EXIT_SUCCESS;
  
   error:
      LOG_ERROR("\nError Code: %x\n", r);
  
      if (eccHandle != ESYS_TR_NONE) {
          if (Esys_FlushContext(esys_context, eccHandle) != TSS2_RC_SUCCESS) {
              LOG_ERROR("Cleanup eccHandle failed.");
          }
      }
  
      if (session != ESYS_TR_NONE) {
          if (Esys_FlushContext(esys_context, session) != TSS2_RC_SUCCESS) {
              LOG_ERROR("Cleanup session failed.");
          }
      }
  
      return failure_return;
  }
  
  int
  test_invoke_esapi(ESYS_CONTEXT * esys_context) {
      return test_esys_zgen_2phase(esys_context);
  }
  