Fapi_GetRandom

Functions
TSS2_RC	Fapi_GetRandom (FAPI_CONTEXT *context, size_t numBytes, uint8_t **data)
TSS2_RC	Fapi_GetRandom_Async (FAPI_CONTEXT *context, size_t numBytes)
TSS2_RC	Fapi_GetRandom_Finish (FAPI_CONTEXT *context, uint8_t **data)

Detailed Description

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

Function Documentation

Fapi_GetRandom()

TSS2_RC Fapi_GetRandom	(	FAPI_CONTEXT *	context,
		size_t	numBytes,
		uint8_t **	data )

One-Call function for Fapi_GetRandom

Creates an array with a specified number of bytes. May execute the underlying TPM command multiple times if the requested number of bytes is too big.

Parameters

[in,out]	context	The FAPI_CONTEXT
[in]	numBytes	The number of bytes requested from the TPM
[out]	data	The array of random bytes returned from the TPM

Return values

TSS2_RC_SUCCESS	if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE	if context or data is NULL.
TSS2_FAPI_RC_BAD_CONTEXT	if context corruption is detected.
TSS2_FAPI_RC_BAD_VALUE	if numBytes is 0.
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_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.
TSS2_FAPI_RC_BAD_PATH	if the path is used in inappropriate context or contains illegal characters.

Fapi_GetRandom_Async()

TSS2_RC Fapi_GetRandom_Async	(	FAPI_CONTEXT *	context,
		size_t	numBytes )

Asynchronous function for Fapi_GetRandom

Creates an array with a specified number of bytes. May execute the underlying TPM command multiple times if the requested number of bytes is too big.

Call Fapi_GetRandom_Finish to finish the execution of this command.

Parameters

[in,out]	context	The FAPI_CONTEXT
[in]	numBytes	The number of bytes requested from the TPM

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_VALUE	if numBytes is 0.
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_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.
TSS2_FAPI_RC_BAD_PATH	if the path is used in inappropriate context or contains illegal characters.

Fapi_GetRandom_Finish()

TSS2_RC Fapi_GetRandom_Finish	(	FAPI_CONTEXT *	context,
		uint8_t **	data )

Asynchronous finish function for Fapi_GetRandom

This function should be called after a previous Fapi_GetRandom_Async.

Parameters

[in,out]	context	The FAPI_CONTEXT
[out]	data	The array of random bytes returned from the TPM

Return values

TSS2_RC_SUCCESS	if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE	if context or data 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_GENERAL_FAILURE	if an internal error occurred.
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_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.