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/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "py/objstr.h"
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#include "embed/extmod/trezorobj.h"
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#include "elligator2.h"
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/// package: trezorcrypto.elligator2
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/// def map_to_curve25519(input: bytes) -> bytes:
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/// """
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/// Maps a 32-byte input to a curve25519 point.
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/// """
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mp_obj_t mod_trezorcrypto_elligator2_map_to_curve25519(mp_obj_t input) {
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mp_buffer_info_t input_buffer_info = {0};
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mp_get_buffer_raise(input, &input_buffer_info, MP_BUFFER_READ);
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if (input_buffer_info.len != 32) {
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mp_raise_ValueError("Invalid input length");
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}
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vstr_t output_vstr = {0};
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vstr_init_len(&output_vstr, 32);
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int res = map_to_curve_elligator2_curve25519(input_buffer_info.buf,
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(uint8_t *)output_vstr.buf);
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if (res != true) {
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mp_raise_ValueError(NULL);
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}
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return mp_obj_new_str_from_vstr(&mp_type_bytes, &output_vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(
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mod_trezorcrypto_elligator2_map_to_curve25519_obj,
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mod_trezorcrypto_elligator2_map_to_curve25519);
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STATIC const mp_rom_map_elem_t mod_trezorcrypto_elligator2_globals_table[] = {
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{MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_elligator2)},
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{MP_ROM_QSTR(MP_QSTR_map_to_curve25519),
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MP_ROM_PTR(&mod_trezorcrypto_elligator2_map_to_curve25519_obj)},
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};
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STATIC MP_DEFINE_CONST_DICT(mod_trezorcrypto_elligator2_globals,
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mod_trezorcrypto_elligator2_globals_table);
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STATIC const mp_obj_module_t mod_trezorcrypto_elligator2_module = {
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.base = {&mp_type_module},
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.globals = (mp_obj_dict_t *)&mod_trezorcrypto_elligator2_globals,
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};
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from typing import *
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# extmod/modtrezorcrypto/modtrezorcrypto-elligator2.h
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def map_to_curve25519(input: bytes) -> bytes:
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"""
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Maps a 32-byte input to a curve25519 point.
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"""
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