async def add_dice_rolls(count, seed, judge_them):
from main import dis
from display import FontTiny, FontLarge
md = tcc.sha256(seed)
pr = PressRelease()
# fixed parts of screen
dis.clear()
y = 38
dis.text(0, y, "Press 1-6 for each dice")
y += 13
dis.text(0, y, "roll to mix in.")
dis.save()
while 1:
# Note: cannot scroll this msg because 5=up arrow
dis.restore()
dis.text(None, 0, '%d rolls' % count, FontLarge)
hx = str(b2a_hex(md.digest()), 'ascii')
dis.text(0, 20, hx[0:32], FontTiny)
dis.text(0, 20 + 7, hx[32:], FontTiny)
dis.show()
ch = await pr.wait()
if ch in '123456':
count += 1
dis.restore()
dis.text(None, 0, '%d rolls' % count, FontLarge)
dis.show()
# this is slow enough to see
md.update(ch)
elif ch == 'x':
# Because the change (roll) has already been applied,
# only let them abort if it's early still
if count < 10 and judge_them:
return 0, seed
elif ch == 'y':
if count < 99 and judge_them:
if not count:
return 0, seed
ok = await ux_confirm('''\
You only provided %d dice rolls, and each roll adds only 2.585 bits of entropy. \
For 128-bit security, which is considered the minimum, you need 50 rolls, and \
for 256-bits of security, 99 rolls.''' % count)
if not ok: continue
break
if count:
seed = md.digest()
return count, seed
async def add_numbers(self, *a):
# collect a series of digits
from main import dis
from display import FontTiny, FontSmall
global pp_sofar
# allow key repeat on X only
press = PressRelease('1234567890y')
footer = "X to DELETE, or OK when DONE."
lx = 6
y = 16
here = ''
dis.clear()
dis.text(None, -1, footer, FontTiny)
dis.save()
while 1:
dis.restore()
# text centered
msg = here
by = y
bx = dis.text(lx, y, msg[0:16])
dis.text(lx, y - 9,
str(pp_sofar, 'ascii').replace(' ', '_'), FontTiny)
if len(msg) > 16:
# second line when needed (left just)
by += 15
bx = dis.text(lx, by, msg[16:])
if len(here) < 32:
dis.icon(bx, by - 2, 'sm_box')
dis.show()
ch = await press.wait()
if ch == 'y':
pp_sofar += here
self.check_length()
return
elif ch == 'x':
if here:
here = here[0:-1]
else:
# quit if they press X on empty screen
return
else:
if len(here) < 32:
here += ch
def show_pin(self, show_hint=False):
filled = len(self.pin)
if show_hint:
filled -= 1
hint = self.pin[-1] if not version.has_membrane else None
dis.clear()
if not self.pin_prefix:
prompt="Enter PIN Prefix"
else:
prompt="Enter rest of PIN"
if self.subtitle:
dis.text(None, 0, self.subtitle)
dis.text(None, 16, prompt, FontTiny)
else:
dis.text(None, 4, prompt)
y = 27
w = 18
x = 12
for idx in range(filled):
dis.icon(x, y, 'xbox')
x += w
if show_hint:
if not version.has_membrane:
dis.text(x+1, y+1, hint, FontLarge)
dis.icon(x, y, 'box')
else:
dis.icon(x, y, 'tbox')
else:
if len(self.pin) != MAX_PIN_PART_LEN:
dis.icon(x, y, 'box')
# BTW: √ also works here, but looks like square root, not a checkmark
if self.footer:
footer = self.footer
elif self.is_repeat:
footer = "CONFIRM PIN VALUE"
elif not self.pin_prefix:
footer = "X to CANCEL, or OK when DONE"
else:
footer = "X to CANCEL, or OK to CONTINUE"
dis.text(None, -1, footer, FontTiny)
dis.show()
def redraw(self):
# Redraw screen.
from main import dis
from display import FontSmall, FontTiny
# what we are showing inside the QR
msg = self.addrs[self.idx]
# make the QR, if needed.
if not self.qr_data:
dis.busy_bar(True)
self.render_qr(msg)
# draw display
dis.clear()
w = 29 # because version=3
XO, YO = 7, 3 # offsets
if not self.invert:
dis.dis.fill_rect(XO - YO, 0, 64, 64, 1)
data = self.qr_data
inv = self.invert
for x in range(w):
for y in range(w):
px = data[x][y]
X = (x * 2) + XO
Y = (y * 2) + YO
dis.dis.fill_rect(X, Y, 2, 2, px if inv else (not px))
x, y = 73, 0 if self.is_alnum else 2
sidebar, ll = self.sidebar or (msg, 7)
for i in range(0, len(sidebar), ll):
dis.text(x, y, sidebar[i:i + ll], FontSmall)
y += 10 if self.is_alnum else 12
if not inv and len(self.addrs) > 1:
# show path number, very tiny
ai = str(self.start_n + self.idx)
if len(ai) == 1:
dis.text(0, 30, ai[0], FontTiny)
else:
dis.text(0, 27, ai[0], FontTiny)
dis.text(0, 27 + 7, ai[1], FontTiny)
dis.busy_bar(False) # includes show
async def do_delay(self, pa):
# show # of failures and implement the delay, which could be
# very long.
dis.clear()
dis.text(None, 0, "Please Wait", FontLarge)
dis.text(None, 24, pretty_delay(pa.delay_required * pa.seconds_per_tick))
dis.text(None, 40, "# of failures: %d" % pa.num_fails)
while pa.is_delay_needed():
dis.progress_bar(pa.delay_achieved / pa.delay_required)
dis.show()
pa.delay()
ch = ux_poll_once('x')
if ch == 'x':
return False
return True