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seed: add progress callback to bip39.from_seed, draw loader

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Jan Pochyla 2019-01-14 14:54:48 +01:00 committed by Pavol Rusnak
parent a0c8e977a2
commit d2aef38bd8
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GPG Key ID: 91F3B339B9A02A3D
2 changed files with 33 additions and 14 deletions
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29
embed/extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
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@ -17,6 +17,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "py/runtime.h"
#include "py/objstr.h"
#include "bip39.h"
@ -110,22 +111,38 @@ STATIC mp_obj_t mod_trezorcrypto_bip39_check(mp_obj_t mnemonic) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_bip39_check_obj, mod_trezorcrypto_bip39_check);
/// def seed(mnemonic: str, passphrase: str) -> bytes:
STATIC mp_obj_t ui_wait_callback = mp_const_none;
STATIC void wrapped_ui_wait_callback(uint32_t current, uint32_t total) {
if (mp_obj_is_callable(ui_wait_callback)) {
mp_call_function_2_protected(ui_wait_callback, mp_obj_new_int(current), mp_obj_new_int(total));
}
}
/// def seed(mnemonic: str, passphrase: str, callback: (int, int -> None)=None) -> bytes:
/// '''
/// Generate seed from mnemonic and passphrase.
/// '''
STATIC mp_obj_t mod_trezorcrypto_bip39_seed(mp_obj_t mnemonic, mp_obj_t passphrase) {
STATIC mp_obj_t mod_trezorcrypto_bip39_seed(size_t n_args, const mp_obj_t *args) {
mp_buffer_info_t mnemo;
mp_buffer_info_t phrase;
mp_get_buffer_raise(mnemonic, &mnemo, MP_BUFFER_READ);
mp_get_buffer_raise(passphrase, &phrase, MP_BUFFER_READ);
mp_get_buffer_raise(args[0], &mnemo, MP_BUFFER_READ);
mp_get_buffer_raise(args[1], &phrase, MP_BUFFER_READ);
uint8_t seed[64];
const char *pmnemonic = mnemo.len > 0 ? mnemo.buf : "";
const char *ppassphrase = phrase.len > 0 ? phrase.buf : "";
mnemonic_to_seed(pmnemonic, ppassphrase, seed, NULL); // no callback for now
if (n_args > 2) {
// generate with a progress callback
ui_wait_callback = args[2];
mnemonic_to_seed(pmnemonic, ppassphrase, seed, wrapped_ui_wait_callback);
ui_wait_callback = mp_const_none;
} else {
// generate without callback
mnemonic_to_seed(pmnemonic, ppassphrase, seed, NULL);
}
return mp_obj_new_bytes(seed, sizeof(seed));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorcrypto_bip39_seed_obj, mod_trezorcrypto_bip39_seed);
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorcrypto_bip39_seed_obj, 2, 3, mod_trezorcrypto_bip39_seed);
STATIC const mp_rom_map_elem_t mod_trezorcrypto_bip39_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_bip39) },

18
src/apps/common/seed.py
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@ -1,6 +1,5 @@
from trezor import ui, wire
from trezor.crypto import bip32, bip39
from trezor.ui.text import Text
from apps.common import cache, storage
from apps.common.request_passphrase import protect_by_passphrase
@ -62,19 +61,22 @@ async def get_keychain(ctx: wire.Context, namespaces: list) -> Keychain:
if passphrase is None:
passphrase = await protect_by_passphrase(ctx)
cache.set_passphrase(passphrase)
await layout_waiting_screen()
seed = bip39.seed(storage.get_mnemonic(), passphrase)
_start_bip39_progress()
seed = bip39.seed(storage.get_mnemonic(), passphrase, _render_bip39_progress)
cache.set_seed(seed)
keychain = Keychain(seed, namespaces)
return keychain
@ui.layout
async def layout_waiting_screen():
text = Text("Deriving seed")
text.bold("Please wait...")
text.render()
def _start_bip39_progress():
ui.display.clear()
ui.header("Please wait")
def _render_bip39_progress(progress: int, total: int):
p = int(1000 * progress / total)
ui.display.loader(p, 18, ui.WHITE, ui.BG)
def derive_node_without_passphrase(