mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-03 04:58:25 +00:00
117 lines
4.1 KiB
C
117 lines
4.1 KiB
C
/*
|
|
* This file is part of the TREZOR project, https://trezor.io/
|
|
*
|
|
* Copyright (c) SatoshiLabs
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "py/objstr.h"
|
|
|
|
#include "blake256.h"
|
|
#include "memzero.h"
|
|
|
|
/// package: trezorcrypto.__init__
|
|
|
|
/// class Blake256:
|
|
/// '''
|
|
/// Blake256 context.
|
|
/// '''
|
|
typedef struct _mp_obj_Blake256_t {
|
|
mp_obj_base_t base;
|
|
BLAKE256_CTX ctx;
|
|
} mp_obj_Blake256_t;
|
|
|
|
STATIC mp_obj_t mod_trezorcrypto_Blake256_update(mp_obj_t self, mp_obj_t data);
|
|
|
|
/// def __init__(self, data: bytes = None) -> None:
|
|
/// '''
|
|
/// Creates a hash context object.
|
|
/// '''
|
|
STATIC mp_obj_t mod_trezorcrypto_Blake256_make_new(const mp_obj_type_t *type,
|
|
size_t n_args, size_t n_kw,
|
|
const mp_obj_t *args) {
|
|
mp_arg_check_num(n_args, n_kw, 0, 1, false);
|
|
mp_obj_Blake256_t *o = m_new_obj(mp_obj_Blake256_t);
|
|
o->base.type = type;
|
|
blake256_Init(&(o->ctx));
|
|
// constructor called with bytes/str as first parameter
|
|
if (n_args == 1) {
|
|
mod_trezorcrypto_Blake256_update(MP_OBJ_FROM_PTR(o), args[0]);
|
|
}
|
|
return MP_OBJ_FROM_PTR(o);
|
|
}
|
|
|
|
/// def update(self, data: bytes) -> None:
|
|
/// '''
|
|
/// Update the hash context with hashed data.
|
|
/// '''
|
|
STATIC mp_obj_t mod_trezorcrypto_Blake256_update(mp_obj_t self, mp_obj_t data) {
|
|
mp_obj_Blake256_t *o = MP_OBJ_TO_PTR(self);
|
|
mp_buffer_info_t msg;
|
|
mp_get_buffer_raise(data, &msg, MP_BUFFER_READ);
|
|
if (msg.len > 0) {
|
|
blake256_Update(&(o->ctx), msg.buf, msg.len);
|
|
}
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorcrypto_Blake256_update_obj,
|
|
mod_trezorcrypto_Blake256_update);
|
|
|
|
/// def digest(self) -> bytes:
|
|
/// '''
|
|
/// Returns the digest of hashed data.
|
|
/// '''
|
|
STATIC mp_obj_t mod_trezorcrypto_Blake256_digest(mp_obj_t self) {
|
|
mp_obj_Blake256_t *o = MP_OBJ_TO_PTR(self);
|
|
uint8_t hash[BLAKE256_DIGEST_LENGTH];
|
|
BLAKE256_CTX ctx;
|
|
memcpy(&ctx, &(o->ctx), sizeof(BLAKE256_CTX));
|
|
blake256_Final(&ctx, hash);
|
|
memzero(&ctx, sizeof(BLAKE256_CTX));
|
|
return mp_obj_new_bytes(hash, sizeof(hash));
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_Blake256_digest_obj,
|
|
mod_trezorcrypto_Blake256_digest);
|
|
|
|
STATIC mp_obj_t mod_trezorcrypto_Blake256___del__(mp_obj_t self) {
|
|
mp_obj_Blake256_t *o = MP_OBJ_TO_PTR(self);
|
|
memzero(&(o->ctx), sizeof(BLAKE256_CTX));
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_Blake256___del___obj,
|
|
mod_trezorcrypto_Blake256___del__);
|
|
|
|
STATIC const mp_rom_map_elem_t mod_trezorcrypto_Blake256_locals_dict_table[] = {
|
|
{MP_ROM_QSTR(MP_QSTR_update),
|
|
MP_ROM_PTR(&mod_trezorcrypto_Blake256_update_obj)},
|
|
{MP_ROM_QSTR(MP_QSTR_digest),
|
|
MP_ROM_PTR(&mod_trezorcrypto_Blake256_digest_obj)},
|
|
{MP_ROM_QSTR(MP_QSTR___del__),
|
|
MP_ROM_PTR(&mod_trezorcrypto_Blake256___del___obj)},
|
|
{MP_ROM_QSTR(MP_QSTR_block_size),
|
|
MP_OBJ_NEW_SMALL_INT(BLAKE256_BLOCK_LENGTH)},
|
|
{MP_ROM_QSTR(MP_QSTR_digest_size),
|
|
MP_OBJ_NEW_SMALL_INT(BLAKE256_DIGEST_LENGTH)},
|
|
};
|
|
STATIC MP_DEFINE_CONST_DICT(mod_trezorcrypto_Blake256_locals_dict,
|
|
mod_trezorcrypto_Blake256_locals_dict_table);
|
|
|
|
STATIC const mp_obj_type_t mod_trezorcrypto_Blake256_type = {
|
|
{&mp_type_type},
|
|
.name = MP_QSTR_Blake256,
|
|
.make_new = mod_trezorcrypto_Blake256_make_new,
|
|
.locals_dict = (void *)&mod_trezorcrypto_Blake256_locals_dict,
|
|
};
|