diff options
| -rw-r--r-- | ports/alif/modos.c | 49 | ||||
| -rw-r--r-- | ports/alif/mpconfigport.h | 2 |
2 files changed, 51 insertions, 0 deletions
diff --git a/ports/alif/modos.c b/ports/alif/modos.c new file mode 100644 index 000000000..9c8c84268 --- /dev/null +++ b/ports/alif/modos.c @@ -0,0 +1,49 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2024 OpenMV LLC. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "py/runtime.h" +#include "se_services.h" + +#if MICROPY_PY_OS_URANDOM +static mp_obj_t mp_os_urandom(mp_obj_t num) { + mp_int_t n = mp_obj_get_int(num); + vstr_t vstr; + vstr_init_len(&vstr, n); + uint64_t rnd = 0; + size_t rnd_bits = 0; + for (int i = 0; i < n; i++) { + if (rnd_bits == 0) { + rnd = se_services_rand64(); + rnd_bits = 64; + } + vstr.buf[i] = rnd; + rnd >>= 8; + rnd_bits -= 8; + } + return mp_obj_new_bytes_from_vstr(&vstr); +} +static MP_DEFINE_CONST_FUN_OBJ_1(mp_os_urandom_obj, mp_os_urandom); +#endif diff --git a/ports/alif/mpconfigport.h b/ports/alif/mpconfigport.h index 2d8e3b2a0..74cfe8eda 100644 --- a/ports/alif/mpconfigport.h +++ b/ports/alif/mpconfigport.h @@ -87,10 +87,12 @@ // Extended modules #define MICROPY_EPOCH_IS_1970 (1) +#define MICROPY_PY_OS_INCLUDEFILE "ports/alif/modos.c" #define MICROPY_PY_OS_DUPTERM (1) #define MICROPY_PY_OS_SEP (1) #define MICROPY_PY_OS_SYNC (1) #define MICROPY_PY_OS_UNAME (1) +#define MICROPY_PY_OS_URANDOM (1) #define MICROPY_PY_TIME (1) #define MICROPY_PY_MACHINE (1) #define MICROPY_PY_MACHINE_INCLUDEFILE "ports/alif/modmachine.c" |