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-esys.h"
  #define LOGMODULE test
  #include "util/log.h"
  #include "util/aux_util.h"
  
  /** This test is intended to test the ESYS function Esys_EncryptDecrypt.
   *
   * First a primary key is generated. This key will be uses as parent fo a
   * symmetric key, which will be used to encrypt and decrypt a tpm2b. The
   * result will be compared.
   *
   * Tested ESYS commands:
   *  - Esys_Create() (M)
   *  - Esys_CreatePrimary() (M)
   *  - Esys_EncryptDecrypt() (O)
   *  - Esys_FlushContext() (M)
   *  - Esys_Load() (M)
   *
   * @param[in,out] esys_context The ESYS_CONTEXT.
   * @retval EXIT_FAILURE
   * @retval EXIT_SKIP
   * @retval EXIT_SUCCESS
   */
  
  int
  test_esys_encrypt_decrypt(ESYS_CONTEXT * esys_context)
  {
      TSS2_RC r;
      ESYS_TR primaryHandle = ESYS_TR_NONE;
      ESYS_TR loadedKeyHandle = ESYS_TR_NONE;
      int failure_return = EXIT_FAILURE;
  
      TPM2B_PUBLIC *outPublic = NULL;
      TPM2B_CREATION_DATA *creationData = NULL;
      TPM2B_DIGEST *creationHash = NULL;
      TPMT_TK_CREATION *creationTicket = NULL;
      TPM2B_MAX_BUFFER *outData = NULL;
      TPM2B_IV *ivOut = NULL;
  
      TPM2B_PUBLIC *outPublic2 = NULL;
      TPM2B_PRIVATE *outPrivate2 = NULL;
      TPM2B_CREATION_DATA *creationData2 = NULL;
      TPM2B_DIGEST *creationHash2 = NULL;
      TPMT_TK_CREATION *creationTicket2 = NULL;
      TPM2B_MAX_BUFFER *outData2 = NULL;
      TPM2B_IV *ivOut2 = NULL;
  
      TPM2B_AUTH authValuePrimary = {
          .size = 5,
          .buffer = {1, 2, 3, 4, 5}
      };
  
      TPM2B_SENSITIVE_CREATE inSensitivePrimary = {
          .size = 0,
          .sensitive = {
              .userAuth = {
                   .size = 0,
                   .buffer = {0 },
               },
              .data = {
                   .size = 0,
                   .buffer = {0},
               },
          },
      };
  
      inSensitivePrimary.sensitive.userAuth = authValuePrimary;
  
      TPM2B_PUBLIC inPublic = {
          .size = 0,
          .publicArea = {
              .type = TPM2_ALG_RSA,
              .nameAlg = TPM2_ALG_SHA256,
              .objectAttributes = (TPMA_OBJECT_USERWITHAUTH |
                                   TPMA_OBJECT_RESTRICTED |
                                   TPMA_OBJECT_DECRYPT |
                                   TPMA_OBJECT_FIXEDTPM |
                                   TPMA_OBJECT_FIXEDPARENT |
                                   TPMA_OBJECT_SENSITIVEDATAORIGIN),
              .authPolicy = {
                   .size = 0,
               },
              .parameters.rsaDetail = {
                   .symmetric = {
                       .algorithm = TPM2_ALG_AES,
                       .keyBits.aes = 128,
                       .mode.aes = TPM2_ALG_CFB},
                   .scheme = {
                        .scheme = TPM2_ALG_NULL
                    },
                   .keyBits = 2048,
                   .exponent = 0,
               },
              .unique.rsa = {
                   .size = 0,
                   .buffer = {},
               },
          },
      };
  
      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);
  
      r = Esys_CreatePrimary(esys_context, ESYS_TR_RH_OWNER, ESYS_TR_PASSWORD,
                             ESYS_TR_NONE, ESYS_TR_NONE,
                             &inSensitivePrimary, &inPublic,
                             &outsideInfo, &creationPCR, &primaryHandle,
                             &outPublic, &creationData, &creationHash,
                             &creationTicket);
      goto_if_error(r, "Error esys create primary", error);
  
      r = Esys_TR_SetAuth(esys_context, primaryHandle, &authValuePrimary);
      goto_if_error(r, "Error: TR_SetAuth", error);
  
      TPM2B_AUTH authKey2 = {
          .size = 6,
          .buffer = {6, 7, 8, 9, 10, 11}
      };
  
      TPM2B_SENSITIVE_CREATE inSensitive2 = {
          .size = 0,
          .sensitive = {
              .userAuth = {
                   .size = 0,
                   .buffer = {0}
               },
              .data = {
                   .size = 16,
                   .buffer = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16}
               }
          }
      };
  
      inSensitive2.sensitive.userAuth = authKey2;
  
      TPM2B_PUBLIC inPublic2 = {
          .size = 0,
          .publicArea = {
              .type = TPM2_ALG_SYMCIPHER,
              .nameAlg = TPM2_ALG_SHA256,
              .objectAttributes = (TPMA_OBJECT_USERWITHAUTH |
                                   TPMA_OBJECT_SIGN_ENCRYPT |
                                   TPMA_OBJECT_DECRYPT),
  
              .authPolicy = {
                   .size = 0,
               },
              .parameters.symDetail = {
                   .sym = {
                       .algorithm = TPM2_ALG_AES,
                       .keyBits = {.aes = 128},
                       .mode = {.aes = TPM2_ALG_CFB}}
               },
              .unique.sym = {
                   .size = 0,
                   .buffer = {}
               }
          }
      };
  
      TPM2B_DATA outsideInfo2 = {
          .size = 0,
          .buffer = {}
          ,
      };
  
      TPML_PCR_SELECTION creationPCR2 = {
          .count = 0,
      };
  
      r = Esys_Create(esys_context,
                      primaryHandle,
                      ESYS_TR_PASSWORD, ESYS_TR_NONE, ESYS_TR_NONE,
                      &inSensitive2,
                      &inPublic2,
                      &outsideInfo2,
                      &creationPCR2,
                      &outPrivate2,
                      &outPublic2,
                      &creationData2, &creationHash2, &creationTicket2);
  
      if (r == 0x2c2) { /*<< tpm:parameter(2):inconsistent attributes */
          LOG_WARNING("Unsupported symmetric cipher.");
          failure_return = EXIT_SKIP;
          goto error;
      }
      goto_if_error(r, "Error esys create ", error);
  
      LOG_INFO("AES key created.");
  
      r = Esys_Load(esys_context,
                    primaryHandle,
                    ESYS_TR_PASSWORD,
                    ESYS_TR_NONE,
                    ESYS_TR_NONE, outPrivate2, outPublic2, &loadedKeyHandle);
      goto_if_error(r, "Error esys load ", error);
  
      LOG_INFO("AES key loaded.");
  
      r = Esys_TR_SetAuth(esys_context, loadedKeyHandle, &authKey2);
      goto_if_error(r, "Error esys TR_SetAuth ", error);
  
      ESYS_TR keyHandle_handle = loadedKeyHandle;
      TPMI_YES_NO decrypt = TPM2_YES;
      TPMI_YES_NO encrypt = TPM2_NO;
      TPMI_ALG_CIPHER_MODE mode = TPM2_ALG_NULL;
      TPM2B_IV ivIn = {
          .size = 16,
          .buffer = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16}
      };
      TPM2B_MAX_BUFFER inData = {
          .size = 16,
          .buffer = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16}
      };
  
  #ifdef TEST_ENCRYPT_DECRYPT2
      LOG_INFO("Test Esys_EncryptDecrypt2");
      r = Esys_EncryptDecrypt2(
          esys_context,
          keyHandle_handle,
          ESYS_TR_PASSWORD,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          &inData,
          encrypt,
          mode,
          &ivIn,
          &outData,
          &ivOut);
  #else
      LOG_INFO("Test Esys_EncryptDecrypt");
      r = Esys_EncryptDecrypt(
          esys_context,
          keyHandle_handle,
          ESYS_TR_PASSWORD,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          encrypt,
          mode,
          &ivIn,
          &inData,
          &outData,
          &ivOut);
  #endif  /* TEST_ENCRYPT_DECRYPT2 */
  
      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_EncryptDecrypt not supported by TPM.");
          failure_return = EXIT_SKIP;
          goto error;
      }
  
      goto_if_error(r, "Error: EncryptDecrypt", error);
  
  #ifdef TEST_ENCRYPT_DECRYPT2
        r = Esys_EncryptDecrypt2(
          esys_context,
          keyHandle_handle,
          ESYS_TR_PASSWORD,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          outData,
          decrypt,
          mode,
          &ivIn,
          &outData2,
          &ivOut2);
  #else
      r = Esys_EncryptDecrypt(
          esys_context,
          keyHandle_handle,
          ESYS_TR_PASSWORD,
          ESYS_TR_NONE,
          ESYS_TR_NONE,
          decrypt,
          mode,
          &ivIn,
          outData,
          &outData2,
          &ivOut2);
  #endif /* TEST_ENCRYPT_DECRYPT2 */
  
      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_EncryptDecrypt not supported by TPM.");
          failure_return = EXIT_SKIP;
          goto error;
      }
  
      goto_if_error(r, "Error: EncryptDecrypt", error);
  
      LOGBLOB_DEBUG(&outData2->buffer[0], outData2->size, "** Decrypted data **");
  
      if (outData2->size != inData.size ||
          memcmp(&outData2->buffer, &inData.buffer[0], outData2->size) != 0) {
          LOG_ERROR("Error: decrypted text not  equal to origin");
          goto error;
      }
  
      r = Esys_FlushContext(esys_context, primaryHandle);
      goto_if_error(r, "Error during FlushContext", error);
  
      primaryHandle = ESYS_TR_NONE;
  
      r = Esys_FlushContext(esys_context, loadedKeyHandle);
      goto_if_error(r, "Error during FlushContext", error);
  
      Esys_Free(outPublic);
      Esys_Free(creationData);
      Esys_Free(creationHash);
      Esys_Free(creationTicket);
      Esys_Free(outData);
      Esys_Free(ivOut);
  
      Esys_Free(outPublic2);
      Esys_Free(outPrivate2);
      Esys_Free(creationData2);
      Esys_Free(creationHash2);
      Esys_Free(creationTicket2);
      Esys_Free(outData2);
      Esys_Free(ivOut2);
      return EXIT_SUCCESS;
  
   error:
  
      if (primaryHandle != ESYS_TR_NONE) {
          if (Esys_FlushContext(esys_context, primaryHandle) != TSS2_RC_SUCCESS) {
              LOG_ERROR("Cleanup primaryHandle failed.");
          }
      }
  
      if (loadedKeyHandle != ESYS_TR_NONE) {
          if (Esys_FlushContext(esys_context, loadedKeyHandle) != TSS2_RC_SUCCESS) {
              LOG_ERROR("Cleanup loadedKeyHandle failed.");
          }
      }
      Esys_Free(outPublic);
      Esys_Free(creationData);
      Esys_Free(creationHash);
      Esys_Free(creationTicket);
      Esys_Free(outData);
      Esys_Free(ivOut);
  
      Esys_Free(outPublic2);
      Esys_Free(outPrivate2);
      Esys_Free(creationData2);
      Esys_Free(creationHash2);
      Esys_Free(creationTicket2);
      Esys_Free(outData2);
      Esys_Free(ivOut2);
      return failure_return;
  }
  
  int
  test_invoke_esys(ESYS_CONTEXT * esys_context) {
      return test_esys_encrypt_decrypt(esys_context);
  }
  