mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-27 01:48:17 +00:00
99 lines
3.9 KiB
C
99 lines
3.9 KiB
C
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under TREZOR License
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* see LICENSE file for details
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*/
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#include "py/objstr.h"
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#include "trezor-crypto/bip39.h"
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typedef struct _mp_obj_Bip39_t {
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mp_obj_base_t base;
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} mp_obj_Bip39_t;
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STATIC mp_obj_t mod_TrezorCrypto_Bip39_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 0, 0, false);
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mp_obj_Bip39_t *o = m_new_obj(mp_obj_Bip39_t);
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o->base.type = type;
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return MP_OBJ_FROM_PTR(o);
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}
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/// def trezor.crypto.bip39.generate(strength: int) -> str
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///
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/// Generate a mnemonic of given strength (128, 160, 192, 224 and 256 bits)
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///
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STATIC mp_obj_t mod_TrezorCrypto_Bip39_generate(mp_obj_t self, mp_obj_t strength) {
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int bits = mp_obj_get_int(strength);
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if (bits % 32 || bits < 128 || bits > 256) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid bit strength (only 128, 160, 192, 224 and 256 values are allowed)"));
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}
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const char *mnemo = mnemonic_generate(bits);
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vstr_t vstr;
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vstr_init_len(&vstr, strlen(mnemo));
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strcpy(vstr.buf, mnemo);
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return mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Bip39_generate_obj, mod_TrezorCrypto_Bip39_generate);
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/// def trezor.crypto.bip39.from_data(data: bytes) -> str
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///
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/// Generate a mnemonic from given data (of 16, 20, 24, 28 and 32 bytes)
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///
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STATIC mp_obj_t mod_TrezorCrypto_Bip39_from_data(mp_obj_t self, mp_obj_t data) {
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mp_buffer_info_t bin;
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mp_get_buffer_raise(data, &bin, MP_BUFFER_READ);
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if (bin.len % 4 || bin.len < 16 || bin.len > 32) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid data length (only 16, 20, 24, 28 and 32 bytes are allowed)"));
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}
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const char *mnemo = mnemonic_from_data(bin.buf, bin.len);
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vstr_t vstr;
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vstr_init_len(&vstr, strlen(mnemo));
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strcpy(vstr.buf, mnemo);
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return mp_obj_new_str_from_vstr(&mp_type_str, &vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Bip39_from_data_obj, mod_TrezorCrypto_Bip39_from_data);
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/// def trezor.crypto.bip39.check(mnemonic: str) -> bool
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///
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/// Check whether given mnemonic is valid
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///
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STATIC mp_obj_t mod_TrezorCrypto_Bip39_check(mp_obj_t self, mp_obj_t mnemonic) {
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mp_buffer_info_t text;
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mp_get_buffer_raise(mnemonic, &text, MP_BUFFER_READ);
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return mnemonic_check(text.buf) ? mp_const_true : mp_const_false;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorCrypto_Bip39_check_obj, mod_TrezorCrypto_Bip39_check);
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/// def trezor.crypto.bip39.seed(mnemonic: str, passphrase: str) -> bytes
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///
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/// Generate seed from mnemonic and passphrase
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///
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STATIC mp_obj_t mod_TrezorCrypto_Bip39_seed(mp_obj_t self, mp_obj_t mnemonic, mp_obj_t passphrase) {
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mp_buffer_info_t mnemo;
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mp_buffer_info_t phrase;
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mp_get_buffer_raise(mnemonic, &mnemo, MP_BUFFER_READ);
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mp_get_buffer_raise(passphrase, &phrase, MP_BUFFER_READ);
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vstr_t vstr;
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vstr_init_len(&vstr, 64);
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mnemonic_to_seed(mnemo.buf, phrase.buf, (uint8_t *)vstr.buf, NULL); // no callback for now
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return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorCrypto_Bip39_seed_obj, mod_TrezorCrypto_Bip39_seed);
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STATIC const mp_rom_map_elem_t mod_TrezorCrypto_Bip39_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_generate), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_generate_obj) },
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{ MP_ROM_QSTR(MP_QSTR_from_data), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_from_data_obj) },
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{ MP_ROM_QSTR(MP_QSTR_check), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_check_obj) },
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{ MP_ROM_QSTR(MP_QSTR_seed), MP_ROM_PTR(&mod_TrezorCrypto_Bip39_seed_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(mod_TrezorCrypto_Bip39_locals_dict, mod_TrezorCrypto_Bip39_locals_dict_table);
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STATIC const mp_obj_type_t mod_TrezorCrypto_Bip39_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Bip39,
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.make_new = mod_TrezorCrypto_Bip39_make_new,
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.locals_dict = (void*)&mod_TrezorCrypto_Bip39_locals_dict,
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};
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