table of contents
| Fapi_GetRandom(3) | tpm2-tss | Fapi_GetRandom(3) |
NAME¶
Fapi_GetRandom - Fapi_GetRandom
SYNOPSIS¶
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 (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
numBytes The number of bytes requested from the TPM
data The array of random bytes returned from the TPM
Return values
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 (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
numBytes The number of bytes requested from the TPM
Return values
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 (FAPI_CONTEXT * context, uint8_t ** data)¶
Asynchronous finish function for Fapi_GetRandom
This function should be called after a previous Fapi_GetRandom_Async.
Parameters
data The array of random bytes returned from the TPM
Return values
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.
Author¶
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| Mon Jul 3 2023 | Version 3.2.2 |