| # zx_cprng_add_entropy |
| |
| ## NAME |
| |
| zx_cprng_add_entropy - Add entropy to the kernel CPRNG |
| |
| ## SYNOPSIS |
| |
| ``` |
| #include <zircon/syscalls.h> |
| |
| zx_status_t zx_cprng_add_entropy(const void* buffer, size_t buffer_size); |
| ``` |
| |
| ## DESCRIPTION |
| |
| **zx_cprng_add_entropy**() mixes the given entropy into the kernel CPRNG. |
| a privileged operation. It will accept at most **ZX_CPRNG_ADD_ENTROPY_MAX_LEN** |
| bytes of entropy at a time. |
| |
| ## RIGHTS |
| |
| TODO(ZX-2399) |
| |
| ## RETURN VALUE |
| |
| **zx_cprng_add_entropy**() returns **ZX_OK** on success. |
| |
| ## ERRORS |
| |
| **ZX_ERR_INVALID_ARGS** *buffer_size* is too large, or *buffer* is not a valid |
| userspace pointer. |
| |
| ## BUGS |
| |
| This syscall should be very privileged. |
