mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-21 05:48:23 +00:00
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under Microsoft Reference Source License (Ms-RSL)
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* see LICENSE.md file for details
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*/
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#include "trezor-crypto/base58.h"
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// class Base58(object):
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typedef struct _mp_obj_Base58_t {
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mp_obj_base_t base;
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} mp_obj_Base58_t;
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// def Base58.__init__(self)
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STATIC mp_obj_t mod_TrezorCrypto_Base58_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_obj_Base58_t *o = m_new_obj(mp_obj_Base58_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 Base58.encode(self, data: bytes) -> str
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STATIC mp_obj_t mod_TrezorCrypto_Base58_encode(mp_obj_t self, mp_obj_t data) {
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mp_buffer_info_t databuf;
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mp_get_buffer_raise(data, &databuf, MP_BUFFER_READ);
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vstr_t vstr;
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vstr_init_len(&vstr, databuf.len * 8000 / 5857 + 1); // 256 = 2^8 ; 58 > 2^5.857
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bool r = b58enc(vstr.buf, &vstr.len, databuf.buf, databuf.len);
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if (!r) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid input"));
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}
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vstr.len--; // b58enc returns length including the trailing zero
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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_Base58_encode_obj, mod_TrezorCrypto_Base58_encode);
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// def Base58.decode(self, string: str) -> bytes
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STATIC mp_obj_t mod_TrezorCrypto_Base58_decode(mp_obj_t self, mp_obj_t string) {
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mp_buffer_info_t stringbuf;
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mp_get_buffer_raise(string, &stringbuf, MP_BUFFER_READ);
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vstr_t vstr;
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vstr_init_len(&vstr, stringbuf.len * 5858 / 8000 + 1); // 256 = 2^8 ; 58 < 2^5.858
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bool r = b58tobin(vstr.buf, &vstr.len, stringbuf.buf);
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if (!r) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid input"));
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}
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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_2(mod_TrezorCrypto_Base58_decode_obj, mod_TrezorCrypto_Base58_decode);
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// Base58 stuff
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STATIC const mp_rom_map_elem_t mod_TrezorCrypto_Base58_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_encode), MP_ROM_PTR(&mod_TrezorCrypto_Base58_encode_obj) },
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{ MP_ROM_QSTR(MP_QSTR_decode), MP_ROM_PTR(&mod_TrezorCrypto_Base58_decode_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(mod_TrezorCrypto_Base58_locals_dict, mod_TrezorCrypto_Base58_locals_dict_table);
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STATIC const mp_obj_type_t mod_TrezorCrypto_Base58_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Base58,
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.make_new = mod_TrezorCrypto_Base58_make_new,
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.locals_dict = (void*)&mod_TrezorCrypto_Base58_locals_dict,
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};
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