Fapi_GetRandom - Fapi_GetRandom
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)
FAPI functions to invoke GetRandom either as one-call or in an
asynchronous manner.
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
context The FAPI_CONTEXT
numBytes The number of bytes requested from the TPM
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.
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
context The FAPI_CONTEXT
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.
Asynchronous finish function for Fapi_GetRandom
This function should be called after a previous
Fapi_GetRandom_Async.
Parameters
context The FAPI_CONTEXT
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.
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