RNG API Reference
RNG
-
typedef wm_hal_rng_cfg_t wm_drv_rng_cfg_t
-
wm_device_t *wm_drv_rng_init(const char *dev_name)
Initialize RNG driver.
Note
This API must be called before all other RNG API can be called
- Parameters:
dev_name – RNG device name
- Returns:
NULL: failed
others: RNG driver device
-
int wm_drv_rng_deinit(wm_device_t *dev)
Release access to GPSEC hardware and deinitialize RNG driver.
- Parameters:
dev – RNG driver device
- Returns:
WM_ERR_SUCCESS: succeed
WM_ERR_INVALID_PARAM: invalid argument
others: failed
-
uint32_t wm_drv_rng_read(wm_device_t *dev)
Get one random from hardware RNG.
- Parameters:
dev – [in] Pointer to the RNG device structure.
- Returns:
Random value
-
int wm_drv_rng_read_bytes(wm_device_t *dev, void *buf, uint32_t len)
Fill a buffer with random from hardware RNG.
- Parameters:
dev – [in] Pointer to the RNG device structure.
buf – [in] Pointer to buffer to fill with random numbers.
len – [in] Length of buffer in bytes
- Returns:
WM_ERR_SUCCESS: succeed
WM_ERR_INVALID_PARAM: invalid argument
others: failed
-
int wm_drv_fill_random(void *buf, uint32_t len)
Fill a buffer with random from hardware RNG.
- Parameters:
buf – [in] Pointer to buffer to fill with random numbers.
len – [in] Length of buffer in bytes
- Returns:
WM_ERR_SUCCESS: succeed
others: failed