/
modtrezorcrypto-sha512.h
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modtrezorcrypto-sha512.h
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/*
* 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 "memzero.h"
#include "sha2.h"
/// package: trezorcrypto.__init__
/// class sha512:
/// """
/// SHA512 context.
/// """
/// block_size: int
/// digest_size: int
typedef struct _mp_obj_Sha512_t {
mp_obj_base_t base;
SHA512_CTX ctx;
} mp_obj_Sha512_t;
STATIC mp_obj_t mod_trezorcrypto_Sha512_update(mp_obj_t self, mp_obj_t data);
/// def __init__(self, __data: AnyStr | None = None) -> None:
/// """
/// Creates a hash context object.
/// """
STATIC mp_obj_t mod_trezorcrypto_Sha512_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_Sha512_t *o = m_new_obj_with_finaliser(mp_obj_Sha512_t);
o->base.type = type;
sha512_Init(&(o->ctx));
if (n_args == 1) {
mod_trezorcrypto_Sha512_update(MP_OBJ_FROM_PTR(o), args[0]);
}
return MP_OBJ_FROM_PTR(o);
}
/// def update(self, __data: AnyStr) -> None:
/// """
/// Update the hash context with hashed data.
/// """
STATIC mp_obj_t mod_trezorcrypto_Sha512_update(mp_obj_t self, mp_obj_t data) {
mp_obj_Sha512_t *o = MP_OBJ_TO_PTR(self);
mp_buffer_info_t msg = {0};
mp_get_buffer_raise(data, &msg, MP_BUFFER_READ);
if (msg.len > 0) {
sha512_Update(&(o->ctx), msg.buf, msg.len);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorcrypto_Sha512_update_obj,
mod_trezorcrypto_Sha512_update);
/// def digest(self) -> bytes:
/// """
/// Returns the digest of hashed data.
/// """
STATIC mp_obj_t mod_trezorcrypto_Sha512_digest(mp_obj_t self) {
mp_obj_Sha512_t *o = MP_OBJ_TO_PTR(self);
vstr_t hash = {0};
vstr_init_len(&hash, SHA512_DIGEST_LENGTH);
SHA512_CTX ctx = {0};
memcpy(&ctx, &(o->ctx), sizeof(SHA512_CTX));
sha512_Final(&ctx, (uint8_t *)hash.buf);
memzero(&ctx, sizeof(SHA512_CTX));
return mp_obj_new_str_from_vstr(&mp_type_bytes, &hash);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_Sha512_digest_obj,
mod_trezorcrypto_Sha512_digest);
STATIC mp_obj_t mod_trezorcrypto_Sha512___del__(mp_obj_t self) {
mp_obj_Sha512_t *o = MP_OBJ_TO_PTR(self);
memzero(&(o->ctx), sizeof(SHA512_CTX));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_Sha512___del___obj,
mod_trezorcrypto_Sha512___del__);
STATIC const mp_rom_map_elem_t mod_trezorcrypto_Sha512_locals_dict_table[] = {
{MP_ROM_QSTR(MP_QSTR_update),
MP_ROM_PTR(&mod_trezorcrypto_Sha512_update_obj)},
{MP_ROM_QSTR(MP_QSTR_digest),
MP_ROM_PTR(&mod_trezorcrypto_Sha512_digest_obj)},
{MP_ROM_QSTR(MP_QSTR___del__),
MP_ROM_PTR(&mod_trezorcrypto_Sha512___del___obj)},
{MP_ROM_QSTR(MP_QSTR_block_size), MP_ROM_INT(SHA512_BLOCK_LENGTH)},
{MP_ROM_QSTR(MP_QSTR_digest_size), MP_ROM_INT(SHA512_DIGEST_LENGTH)},
};
STATIC MP_DEFINE_CONST_DICT(mod_trezorcrypto_Sha512_locals_dict,
mod_trezorcrypto_Sha512_locals_dict_table);
STATIC const mp_obj_type_t mod_trezorcrypto_Sha512_type = {
{&mp_type_type},
.name = MP_QSTR_Sha512,
.make_new = mod_trezorcrypto_Sha512_make_new,
.locals_dict = (void *)&mod_trezorcrypto_Sha512_locals_dict,
};