mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-24 15:28:10 +00:00
153 lines
5.4 KiB
C
153 lines
5.4 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 "pbkdf2.h"
|
|
#include "memzero.h"
|
|
|
|
#define PRF_HMAC_SHA256 256
|
|
#define PRF_HMAC_SHA512 512
|
|
|
|
/// package: trezorcrypto.__init__
|
|
|
|
/// class Pbkdf2:
|
|
/// '''
|
|
/// PBKDF2 context.
|
|
/// '''
|
|
typedef struct _mp_obj_Pbkdf2_t {
|
|
mp_obj_base_t base;
|
|
union {
|
|
PBKDF2_HMAC_SHA256_CTX ctx256;
|
|
PBKDF2_HMAC_SHA512_CTX ctx512;
|
|
};
|
|
uint32_t prf;
|
|
} mp_obj_Pbkdf2_t;
|
|
|
|
STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_update(mp_obj_t self, mp_obj_t data);
|
|
|
|
/// def __init__(self, prf: int, password: bytes, salt: bytes, iterations: int = None, blocknr: int = 1) -> None:
|
|
/// '''
|
|
/// Create a PBKDF2 context.
|
|
/// '''
|
|
STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_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, 3, 4, false);
|
|
mp_obj_Pbkdf2_t *o = m_new_obj(mp_obj_Pbkdf2_t);
|
|
o->base.type = type;
|
|
|
|
mp_buffer_info_t password;
|
|
mp_get_buffer_raise(args[1], &password, MP_BUFFER_READ);
|
|
mp_buffer_info_t salt;
|
|
mp_get_buffer_raise(args[2], &salt, MP_BUFFER_READ);
|
|
|
|
if (password.len == 0) {
|
|
password.buf = "";
|
|
}
|
|
if (salt.len == 0) {
|
|
salt.buf = "";
|
|
}
|
|
|
|
uint32_t blocknr = 1;
|
|
if (n_args > 4) { // blocknr is set
|
|
blocknr = trezor_obj_get_uint(args[4]);
|
|
}
|
|
|
|
o->prf = trezor_obj_get_uint(args[0]);
|
|
if (o->prf == PRF_HMAC_SHA256) {
|
|
pbkdf2_hmac_sha256_Init(&(o->ctx256), password.buf, password.len, salt.buf, salt.len, blocknr);
|
|
} else
|
|
if (o->prf == PRF_HMAC_SHA512) {
|
|
pbkdf2_hmac_sha512_Init(&(o->ctx512), password.buf, password.len, salt.buf, salt.len, blocknr);
|
|
} else {
|
|
mp_raise_ValueError("Invalid PRF");
|
|
}
|
|
// constructor called with iterations as fourth parameter
|
|
if (n_args > 3) {
|
|
mod_trezorcrypto_Pbkdf2_update(MP_OBJ_FROM_PTR(o), args[3]);
|
|
}
|
|
return MP_OBJ_FROM_PTR(o);
|
|
}
|
|
|
|
/// def update(self, iterations: int) -> None:
|
|
/// '''
|
|
/// Update a PBKDF2 context.
|
|
/// '''
|
|
STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_update(mp_obj_t self, mp_obj_t iterations) {
|
|
mp_obj_Pbkdf2_t *o = MP_OBJ_TO_PTR(self);
|
|
uint32_t iter = trezor_obj_get_uint(iterations);
|
|
if (o->prf == PRF_HMAC_SHA256) {
|
|
pbkdf2_hmac_sha256_Update(&(o->ctx256), iter);
|
|
}
|
|
if (o->prf == PRF_HMAC_SHA512) {
|
|
pbkdf2_hmac_sha512_Update(&(o->ctx512), iter);
|
|
}
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorcrypto_Pbkdf2_update_obj, mod_trezorcrypto_Pbkdf2_update);
|
|
|
|
/// def key(self) -> bytes:
|
|
/// '''
|
|
/// Retrieve derived key.
|
|
/// '''
|
|
STATIC mp_obj_t mod_trezorcrypto_Pbkdf2_key(mp_obj_t self) {
|
|
mp_obj_Pbkdf2_t *o = MP_OBJ_TO_PTR(self);
|
|
if (o->prf == PRF_HMAC_SHA256) {
|
|
PBKDF2_HMAC_SHA256_CTX ctx;
|
|
memcpy(&ctx, &(o->ctx256), sizeof(PBKDF2_HMAC_SHA256_CTX));
|
|
uint8_t out[SHA256_DIGEST_LENGTH];
|
|
pbkdf2_hmac_sha256_Final(&ctx, out);
|
|
memzero(&ctx, sizeof(PBKDF2_HMAC_SHA256_CTX));
|
|
return mp_obj_new_bytes(out, sizeof(out));
|
|
}
|
|
if (o->prf == PRF_HMAC_SHA512) {
|
|
PBKDF2_HMAC_SHA512_CTX ctx;
|
|
memcpy(&ctx, &(o->ctx512), sizeof(PBKDF2_HMAC_SHA512_CTX));
|
|
uint8_t out[SHA512_DIGEST_LENGTH];
|
|
pbkdf2_hmac_sha512_Final(&ctx, out);
|
|
memzero(&ctx, sizeof(PBKDF2_HMAC_SHA512_CTX));
|
|
return mp_obj_new_bytes(out, sizeof(out));
|
|
}
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_Pbkdf2_key_obj, mod_trezorcrypto_Pbkdf2_key);
|
|
|
|
STATIC mp_obj_t mod_trezorcrypto_Pbkdf2___del__(mp_obj_t self) {
|
|
mp_obj_Pbkdf2_t *o = MP_OBJ_TO_PTR(self);
|
|
memzero(&(o->ctx256), sizeof(PBKDF2_HMAC_SHA256_CTX));
|
|
memzero(&(o->ctx512), sizeof(PBKDF2_HMAC_SHA512_CTX));
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_Pbkdf2___del___obj, mod_trezorcrypto_Pbkdf2___del__);
|
|
|
|
STATIC const mp_rom_map_elem_t mod_trezorcrypto_Pbkdf2_locals_dict_table[] = {
|
|
{ MP_ROM_QSTR(MP_QSTR_update), MP_ROM_PTR(&mod_trezorcrypto_Pbkdf2_update_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_key), MP_ROM_PTR(&mod_trezorcrypto_Pbkdf2_key_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&mod_trezorcrypto_Pbkdf2___del___obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_HMAC_SHA256), MP_OBJ_NEW_SMALL_INT(PRF_HMAC_SHA256) },
|
|
{ MP_ROM_QSTR(MP_QSTR_HMAC_SHA512), MP_OBJ_NEW_SMALL_INT(PRF_HMAC_SHA512) },
|
|
};
|
|
STATIC MP_DEFINE_CONST_DICT(mod_trezorcrypto_Pbkdf2_locals_dict, mod_trezorcrypto_Pbkdf2_locals_dict_table);
|
|
|
|
STATIC const mp_obj_type_t mod_trezorcrypto_Pbkdf2_type = {
|
|
{ &mp_type_type },
|
|
.name = MP_QSTR_Pbkdf2,
|
|
.make_new = mod_trezorcrypto_Pbkdf2_make_new,
|
|
.locals_dict = (void*)&mod_trezorcrypto_Pbkdf2_locals_dict,
|
|
};
|