NAME

       Fapi_ChangeAuth - Fapi_ChangeAuth

SYNOPSIS

   Functions
       TSS2_RC Fapi_ChangeAuth (FAPI_CONTEXT *context, char const *entityPath, char const
           *authValue)
       TSS2_RC Fapi_ChangeAuth_Async (FAPI_CONTEXT *context, char const *entityPath, char const
           *authValue)
       TSS2_RC Fapi_ChangeAuth_Finish (FAPI_CONTEXT *context)

Detailed Description

       FAPI functions to invoke ChangeAuth either as one-call or in an asynchronous manner.

Function Documentation

   Fapi_ChangeAuth (FAPI_CONTEXT * context, char const * entityPath, char const * authValue)
       One-Call function for Fapi_ChangeAuth

       Changes the Authorization data of an entity found at keyPath. The parameter authValue is a
       0-terminated UTF-8 encoded password. If it is longer than the digest size of the entity's
       nameAlg, it will be hashed according the the TPM specification part 1, rev 138, section
       19.6.4.3.

       Parameters
           context The FAPI_CONTEXT
           entityPath The path to the entity to modify
           authValue The new 0-terminated password to set for the entity. May be NULL

       Return values
           TSS2_RC_SUCCESS if the function call was a success.
           TSS2_FAPI_RC_BAD_REFERENCE if context or entityPath is NULL.
           TSS2_FAPI_RC_BAD_CONTEXT if context corruption is detected.
           TSS2_FAPI_RC_BAD_PATH if entityPath does not map to a FAPI entity.
           TSS2_FAPI_RC_BAD_SEQUENCE if the context has an asynchronous operation already
           pending.
           TSS2_FAPI_RC_IO_ERROR if the data cannot be saved.
           TSS2_FAPI_RC_MEMORY if the FAPI cannot allocate enough memory for internal operations
           or return parameters.
           TSS2_FAPI_RC_NO_TPM if FAPI was initialized in no-TPM-mode via its config file.
           TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into the function.
           TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found during authorization.
           TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found.
           TSS2_FAPI_RC_TRY_AGAIN if an I/O operation is not finished yet and this function needs
           to be called again.
           TSS2_FAPI_RC_GENERAL_FAILURE if an internal error occurred.
           TSS2_FAPI_RC_AUTHORIZATION_UNKNOWN if a required authorization callback is not set.
           TSS2_FAPI_RC_AUTHORIZATION_FAILED if the authorization attempt fails.
           TSS2_FAPI_RC_POLICY_UNKNOWN if policy search for a certain policy digest was not
           successful.
           TSS2_ESYS_RC_* possible error codes of ESAPI.
           TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned.

   Fapi_ChangeAuth_Async (FAPI_CONTEXT * context, char const * entityPath, char const *
       authValue)
       Asynchronous function for Fapi_ChangeAuth

       Changes the Authorization data of an entity found at keyPath. The parameter authValue is a
       0-terminated UTF-8 encoded password. If it is longer than the digest size of the entity's
       nameAlg, it will be hashed according the the TPM specification part 1, rev 138, section
       19.6.4.3.

       Call Fapi_ChangeAuth_Finish to finish the execution of this command.

       Parameters
           context The FAPI_CONTEXT
           entityPath The path to the entity to modify
           authValue The new 0-terminated password to set for the entity. May be NULL

       Return values
           TSS2_RC_SUCCESS if the function call was a success.
           TSS2_FAPI_RC_BAD_REFERENCE if context or entityPath is NULL.
           TSS2_FAPI_RC_BAD_CONTEXT if context corruption is detected.
           TSS2_FAPI_RC_BAD_PATH if entityPath does not map to a FAPI entity.
           TSS2_FAPI_RC_BAD_SEQUENCE if the context has an asynchronous operation already
           pending.
           TSS2_FAPI_RC_IO_ERROR if the data cannot be saved.
           TSS2_FAPI_RC_MEMORY if the FAPI cannot allocate enough memory for internal operations
           or return parameters.
           TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into the function.
           TSS2_FAPI_RC_NO_TPM if FAPI was initialized in no-TPM-mode via its config file.
           TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found during authorization.
           TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found.
           TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned.

   Fapi_ChangeAuth_Finish (FAPI_CONTEXT * context)
       Asynchronous finish function for Fapi_ChangeAuth

       This function should be called after a previous Fapi_ChangeAuth_Async.

       Parameters
           context The FAPI_CONTEXT

       Return values
           TSS2_RC_SUCCESS if the function call was a success.
           TSS2_FAPI_RC_BAD_REFERENCE if context is NULL.
           TSS2_FAPI_RC_BAD_CONTEXT if context corruption is detected.
           TSS2_FAPI_RC_BAD_SEQUENCE if the context has an asynchronous operation already
           pending.
           TSS2_FAPI_RC_IO_ERROR if the data cannot be saved.
           TSS2_FAPI_RC_MEMORY if the FAPI cannot allocate enough memory for internal operations
           or return parameters.
           TSS2_FAPI_RC_TRY_AGAIN if the asynchronous operation is not yet complete. Call this
           function again later.
           TSS2_FAPI_RC_BAD_VALUE if an invalid value was passed into the function.
           TSS2_FAPI_RC_GENERAL_FAILURE if an internal error occurred.
           TSS2_FAPI_RC_PATH_NOT_FOUND if a FAPI object path was not found during authorization.
           TSS2_FAPI_RC_KEY_NOT_FOUND if a key was not found.
           TSS2_FAPI_RC_AUTHORIZATION_UNKNOWN if a required authorization callback is not set.
           TSS2_FAPI_RC_AUTHORIZATION_FAILED if the authorization attempt fails.
           TSS2_FAPI_RC_POLICY_UNKNOWN if policy search for a certain policy digest was not
           successful.
           TSS2_ESYS_RC_* possible error codes of ESAPI.
           TSS2_FAPI_RC_NOT_PROVISIONED FAPI was not provisioned.
           TSS2_FAPI_RC_BAD_PATH if the path is used in inappropriate context or contains illegal
           characters.

Author

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