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Code Issues Releases Wiki Activity

storage: Add storage_ensure_not_wipe_code().

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This commit is contained in:
Andrew Kozlik 2020-03-16 23:38:48 +01:00 committed by Andrew Kozlik
parent e51ed5bf05
commit bfd834d1de
4 changed files with 31 additions and 6 deletions
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14
core/embed/extmod/modtrezorconfig/modtrezorconfig.c
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@ -173,6 +173,18 @@ STATIC mp_obj_t mod_trezorconfig_change_pin(size_t n_args,
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorconfig_change_pin_obj, 4,
4, mod_trezorconfig_change_pin);
/// def ensure_not_wipe_code(pin: int) -> None:
/// """
/// Wipes the device if the entered PIN is the wipe code.
/// """
STATIC mp_obj_t mod_trezorconfig_ensure_not_wipe_code(mp_obj_t pin) {
uint32_t pin_i = trezor_obj_get_uint(pin);
storage_ensure_not_wipe_code(pin_i);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorconfig_ensure_not_wipe_code_obj,
mod_trezorconfig_ensure_not_wipe_code);
/// def has_wipe_code() -> bool:
/// """
/// Returns True if storage has a configured wipe code, False otherwise.
@ -367,6 +379,8 @@ STATIC const mp_rom_map_elem_t mp_module_trezorconfig_globals_table[] = {
MP_ROM_PTR(&mod_trezorconfig_get_pin_rem_obj)},
{MP_ROM_QSTR(MP_QSTR_change_pin),
MP_ROM_PTR(&mod_trezorconfig_change_pin_obj)},
{MP_ROM_QSTR(MP_QSTR_ensure_not_wipe_code),
MP_ROM_PTR(&mod_trezorconfig_ensure_not_wipe_code_obj)},
{MP_ROM_QSTR(MP_QSTR_has_wipe_code),
MP_ROM_PTR(&mod_trezorconfig_has_wipe_code_obj)},
{MP_ROM_QSTR(MP_QSTR_change_wipe_code),

7
core/mocks/generated/trezorconfig.pyi
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@ -60,6 +60,13 @@ def change_pin(
"""
# extmod/modtrezorconfig/modtrezorconfig.c
def ensure_not_wipe_code(pin: int) -> None:
"""
Wipes the device if the entered PIN is the wipe code.
"""
# extmod/modtrezorconfig/modtrezorconfig.c
def has_wipe_code() -> bool:
"""

15
storage/storage.c
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@ -950,12 +950,7 @@ static secbool unlock(uint32_t pin, const uint8_t *ext_salt) {
return secfalse;
}
// Check whether the user entered the wipe code.
if (sectrue != is_not_wipe_code(pin)) {
storage_wipe();
error_shutdown("You have entered the", "wipe code. All private",
"data has been erased.", NULL);
}
storage_ensure_not_wipe_code(pin);
// Get the pin failure counter
uint32_t ctr = 0;
@ -1339,6 +1334,14 @@ secbool storage_change_pin(uint32_t oldpin, uint32_t newpin,
return ret;
}
void storage_ensure_not_wipe_code(uint32_t pin) {
if (sectrue != is_not_wipe_code(pin)) {
storage_wipe();
error_shutdown("You have entered the", "wipe code. All private",
"data has been erased.", NULL);
}
}
secbool storage_has_wipe_code(void) {
if (sectrue != initialized || sectrue != unlocked) {
return secfalse;

1
storage/storage.h
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@ -52,6 +52,7 @@ uint32_t storage_get_pin_rem(void);
secbool storage_change_pin(uint32_t oldpin, uint32_t newpin,
const uint8_t *old_ext_salt,
const uint8_t *new_ext_salt);
void storage_ensure_not_wipe_code(uint32_t pin);
secbool storage_has_wipe_code(void);
secbool storage_change_wipe_code(uint32_t pin, const uint8_t *ext_salt,
uint32_t wipe_code);