def setup_dialog(self, window):
self.update_wallet_name(window.parent().parent().wallet)
self.user_input = False
self.noise_seed = False
self.d = WindowModalDialog(window, "Revealer")
self.d.setMinimumWidth(420)
vbox = QVBoxLayout(self.d)
vbox.addSpacing(21)
logo = QLabel()
vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
vbox.addSpacing(42)
self.load_noise = ScanQRTextEdit()
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
vbox.addWidget(
WWLabel("<b>" + _("Enter your physical revealer code:") + "<b>"))
vbox.addWidget(self.load_noise)
vbox.addSpacing(11)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setDefault(True)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(
partial(self.cypherseed_dialog, window))
vbox.addSpacing(21)
vbox.addWidget(WWLabel(_("or, alternatively: ")))
bcreate = QPushButton(_("Create a digital Revealer"))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
traceback.print_exc(file=sys.stdout)
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
vbox.addWidget(bcreate)
vbox.addSpacing(11)
vbox.addWidget(
QLabel(''.join([
"<b>" + _("WARNING") + "</b>:" +
_("Printing a revealer and encrypted seed"),
'<br/>',
_("on the same printer is not trustless towards the printer."),
'<br/>',
])))
vbox.addSpacing(11)
vbox.addLayout(Buttons(CloseButton(self.d)))
return bool(self.d.exec_())
def cypherseed_dialog(self, window):
self.warn_old_revealer()
d = WindowModalDialog(window, "Encryption Dialog")
d.setMinimumWidth(500)
d.setMinimumHeight(210)
d.setMaximumHeight(450)
d.setContentsMargins(11, 11, 1, 1)
self.c_dialog = d
hbox = QHBoxLayout(d)
self.vbox = QVBoxLayout()
logo = QLabel()
hbox.addWidget(logo)
logo.setPixmap(QPixmap(icon_path('revealer.png')))
logo.setAlignment(Qt.AlignLeft)
hbox.addSpacing(16)
self.vbox.addWidget(
WWLabel("<b>" + _("Revealer Secret Backup Plugin") + "</b><br>" +
_("Ready to encrypt for revealer {}").format(
self.versioned_seed.version + '_' +
self.versioned_seed.checksum)))
self.vbox.addSpacing(11)
hbox.addLayout(self.vbox)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Encrypt {}'s seed").format(self.wallet_name))
cprint.setMaximumWidth(250)
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(1)
self.vbox.addWidget(
WWLabel("<b>" + _("OR") + "</b> " +
_("type a custom alphanumerical secret below:")))
self.text = ScanQRTextEdit(config=self.config)
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel(
"<font color='red'>" +
_("This version supports a maximum of {} characters.").format(
self.MAX_PLAINTEXT_LEN) + "</font>")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Encrypt custom secret"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addLayout(Buttons(CloseButton(d)))
return bool(d.exec_())
def setup_dialog(self, window):
self.wallet = window.parent().wallet
self.update_wallet_name(self.wallet)
self.user_input = False
self.d = WindowModalDialog(window, "Setup Dialog")
self.d.setMinimumWidth(500)
self.d.setMinimumHeight(210)
self.d.setMaximumHeight(320)
self.d.setContentsMargins(11,11,1,1)
self.hbox = QHBoxLayout(self.d)
vbox = QVBoxLayout()
logo = QLabel()
self.hbox.addWidget(logo)
logo.setPixmap(QPixmap(icon_path('revealer.png')))
logo.setAlignment(Qt.AlignLeft)
self.hbox.addSpacing(16)
vbox.addWidget(WWLabel("<b>"+_("Revealer Secret Backup Plugin")+"</b><br>"
+_("To encrypt your backup, first we need to load some noise.")+"<br/>"))
vbox.addSpacing(7)
bcreate = QPushButton(_("Create a new Revealer"))
bcreate.setMaximumWidth(181)
bcreate.setDefault(True)
vbox.addWidget(bcreate, Qt.AlignCenter)
self.load_noise = ScanQRTextEdit()
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
self.hbox.addLayout(vbox)
vbox.addWidget(WWLabel(_("or type an existing revealer code below and click 'next':")))
vbox.addWidget(self.load_noise)
vbox.addSpacing(3)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(partial(self.cypherseed_dialog, window))
vbox.addWidget(
QLabel("<b>" + _("Warning") + "</b>: " + _("Each revealer should be used only once.")
+"<br>"+_("more information at <a href=\"https://revealer.cc/faq\">https://revealer.cc/faq</a>")))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
traceback.print_exc(file=sys.stdout)
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
return bool(self.d.exec_())
def setup_dialog(self, window):
self.wallet = window.parent().wallet
self.update_wallet_name(self.wallet)
self.user_input = False
self.d = WindowModalDialog(window, "Setup Dialog")
self.d.setMinimumWidth(500)
self.d.setMinimumHeight(210)
self.d.setMaximumHeight(320)
self.d.setContentsMargins(11,11,1,1)
self.hbox = QHBoxLayout(self.d)
vbox = QVBoxLayout()
logo = QLabel()
self.hbox.addWidget(logo)
logo.setPixmap(QPixmap(icon_path('revealer.png')))
logo.setAlignment(Qt.AlignLeft)
self.hbox.addSpacing(16)
vbox.addWidget(WWLabel("<b>"+_("Revealer Visual Cryptography Plugin")+"</b><br><br>"
+_("To encrypt a secret, first create or load noise.")+"<br/>"))
vbox.addSpacing(7)
bcreate = QPushButton(_("Create a new Revealer"))
bcreate.setMaximumWidth(181)
bcreate.setDefault(True)
vbox.addWidget(bcreate, Qt.AlignCenter)
self.load_noise = ScanQRTextEdit(config=self.config)
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
self.hbox.addLayout(vbox)
vbox.addWidget(WWLabel(_("or type an existing revealer code below and click 'next':")))
vbox.addWidget(self.load_noise)
vbox.addSpacing(3)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(partial(self.cypherseed_dialog, window))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
self.logger.exception('')
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
return bool(self.d.exec_())
def cypherseed_dialog(self, window):
d = WindowModalDialog(window, "Revealer")
d.setMinimumWidth(420)
self.c_dialog = d
self.vbox = QVBoxLayout(d)
self.vbox.addSpacing(21)
logo = QLabel()
self.vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
self.vbox.addSpacing(42)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Generate encrypted seed backup"))
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(14)
self.vbox.addWidget(WWLabel(_("OR type any secret below:")))
self.text = ScanQRTextEdit()
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel("<font color='red'>" + _("This version supports a maximum of 216 characters.")+"</font>")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Generate custom secret encrypted backup"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addWidget(
QLabel(''.join(["<b>" + _("WARNING") + "</b>: " + _("Revealer is a one-time-pad and should be used only once."), '<br/>',
_("Multiple secrets encrypted for the same Revealer can be attacked."), '<br/>',
])))
self.vbox.addSpacing(11)
self.vbox.addSpacing(21)
self.vbox.addLayout(Buttons(CloseButton(d)))
return bool(d.exec_())
def setup_dialog(self, window):
self.update_wallet_name(window.parent().parent().wallet)
self.user_input = False
self.noise_seed = False
self.d = WindowModalDialog(window, "Revealer")
self.d.setMinimumWidth(420)
vbox = QVBoxLayout(self.d)
vbox.addSpacing(21)
logo = QLabel()
vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
vbox.addSpacing(42)
self.load_noise = ScanQRTextEdit()
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
vbox.addWidget(WWLabel("<b>"+_("Enter your physical revealer code:")+"<b>"))
vbox.addWidget(self.load_noise)
vbox.addSpacing(11)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setDefault(True)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(partial(self.cypherseed_dialog, window))
vbox.addSpacing(21)
vbox.addWidget(WWLabel(_("or, alternatively: ")))
bcreate = QPushButton(_("Create a digital Revealer"))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
traceback.print_exc(file=sys.stdout)
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
vbox.addWidget(bcreate)
vbox.addSpacing(11)
vbox.addWidget(QLabel(''.join([ "<b>"+_("WARNING")+ "</b>:" + _("Printing a revealer and encrypted seed"), '<br/>',
_("on the same printer is not trustless towards the printer."), '<br/>',
])))
vbox.addSpacing(11)
vbox.addLayout(Buttons(CloseButton(self.d)))
return bool(self.d.exec_())
class Plugin(BasePlugin):
def __init__(self, parent, config, name):
BasePlugin.__init__(self, parent, config, name)
self.base_dir = config.electrum_path() + '/revealer/'
if self.config.get('calibration_h') is None:
self.config.set_key('calibration_h', 0)
if self.config.get('calibration_v') is None:
self.config.set_key('calibration_v', 0)
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
self.version = '1'
self.size = (159, 97)
self.f_size = QSize(1014 * 2, 642 * 2)
self.abstand_h = 21
self.abstand_v = 34
self.calibration_noise = int('10' * 128)
self.rawnoise = False
make_dir(self.base_dir)
@hook
def set_seed(self, seed, has_extension, parent):
self.cseed = seed.upper()
self.has_extension = has_extension
parent.addButton(':icons/revealer.png',
partial(self.setup_dialog, parent),
"Revealer" + _(" secret backup utility"))
def requires_settings(self):
return True
def settings_widget(self, window):
return EnterButton(_('Printer Calibration'),
partial(self.calibration_dialog, window))
def setup_dialog(self, window):
self.update_wallet_name(window.parent().parent().wallet)
self.user_input = False
self.noise_seed = False
self.d = WindowModalDialog(window, "Revealer")
self.d.setMinimumWidth(420)
vbox = QVBoxLayout(self.d)
vbox.addSpacing(21)
logo = QLabel()
vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
vbox.addSpacing(42)
self.load_noise = ScanQRTextEdit()
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
vbox.addWidget(
WWLabel("<b>" + _("Enter your physical revealer code:") + "<b>"))
vbox.addWidget(self.load_noise)
vbox.addSpacing(11)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setDefault(True)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(
partial(self.cypherseed_dialog, window))
vbox.addSpacing(21)
vbox.addWidget(WWLabel(_("or, alternatively: ")))
bcreate = QPushButton(_("Create a digital Revealer"))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
traceback.print_exc(file=sys.stdout)
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
vbox.addWidget(bcreate)
vbox.addSpacing(11)
vbox.addWidget(
QLabel(''.join([
"<b>" + _("WARNING") + "</b>:" +
_("Printing a revealer and encrypted seed"),
'<br/>',
_("on the same printer is not trustless towards the printer."),
'<br/>',
])))
vbox.addSpacing(11)
vbox.addLayout(Buttons(CloseButton(self.d)))
return bool(self.d.exec_())
def get_noise(self):
text = self.load_noise.text()
return ''.join(text.split()).lower()
def on_edit(self):
s = self.get_noise()
b = self.is_noise(s)
if b:
self.noise_seed = s[1:-3]
self.user_input = True
self.next_button.setEnabled(b)
def code_hashid(self, txt):
x = to_bytes(txt, 'utf8')
hash = sha256(x).hexdigest()
return hash[-3:].upper()
def is_noise(self, txt):
if (len(txt) >= 34):
try:
int(txt, 16)
except:
self.user_input = False
return False
else:
id = self.code_hashid(txt[:-3])
if (txt[-3:].upper() == id.upper()):
self.code_id = id
self.user_input = True
return True
else:
return False
else:
if (len(txt) > 0 and txt[0] == '0'):
self.d.show_message(''.join([
"<b>",
_("Warning: "), "</b>",
_("Revealers starting with 0 had a vulnerability and are not supported."
)
]))
self.user_input = False
return False
def make_digital(self, dialog):
self.make_rawnoise(True)
self.bdone(dialog)
self.d.close()
def bcrypt(self, dialog):
self.rawnoise = False
dialog.show_message(''.join([
_("{} encrypted for Revealer {}_{} saved as PNG and PDF at:"
).format(self.was, self.version, self.code_id), "<br/>", "<b>",
self.base_dir + self.filename + self.version + "_" + self.code_id,
"</b>"
]))
dialog.close()
def ext_warning(self, dialog):
dialog.show_message(''.join([
"<b>",
_("Warning: "), "</b>",
_("your seed extension will not be included in the encrypted backup."
)
]))
dialog.close()
def bdone(self, dialog):
dialog.show_message(''.join([
_("Digital Revealer ({}_{}) saved as PNG and PDF at:").format(
self.version, self.code_id), "<br/>", "<b>",
self.base_dir + 'revealer_' + self.version + '_' + self.code_id,
'</b>'
]))
def customtxt_limits(self):
txt = self.text.text()
self.max_chars.setVisible(False)
self.char_count.setText("(" + str(len(txt)) + "/216)")
if len(txt) > 0:
self.ctext.setEnabled(True)
if len(txt) > 216:
self.text.setPlainText(self.text.toPlainText()[:216])
self.max_chars.setVisible(True)
def t(self):
self.txt = self.text.text()
self.seed_img(is_seed=False)
def cypherseed_dialog(self, window):
d = WindowModalDialog(window, "Revealer")
d.setMinimumWidth(420)
self.c_dialog = d
self.vbox = QVBoxLayout(d)
self.vbox.addSpacing(21)
logo = QLabel()
self.vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
self.vbox.addSpacing(42)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Generate encrypted seed backup"))
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(14)
self.vbox.addWidget(WWLabel(_("OR type any secret below:")))
self.text = ScanQRTextEdit()
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel(
"<font color='red'>" +
_("This version supports a maximum of 216 characters.") +
"</font>")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Generate custom secret encrypted backup"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addWidget(
QLabel(''.join([
"<b>" + _("WARNING") + "</b>: " +
_("Revealer is a one-time-pad and should be used only once."),
'<br/>',
_("Multiple secrets encrypted for the same Revealer can be attacked."
),
'<br/>',
])))
self.vbox.addSpacing(11)
self.vbox.addSpacing(21)
self.vbox.addLayout(Buttons(CloseButton(d)))
return bool(d.exec_())
def update_wallet_name(self, name):
self.wallet_name = str(name)
self.base_name = self.base_dir + self.wallet_name
def seed_img(self, is_seed=True):
if not self.cseed and self.txt == False:
return
if is_seed:
txt = self.cseed
else:
txt = self.txt.upper()
img = QImage(self.size[0], self.size[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.white)
painter = QPainter()
painter.begin(bitmap)
QFontDatabase.addApplicationFont(
os.path.join(os.path.dirname(__file__), 'SourceSansPro-Bold.otf'))
if len(txt) < 102:
fontsize = 15
linespace = 15
max_letters = 17
max_lines = 6
max_words = 3
else:
fontsize = 12
linespace = 10
max_letters = 23
max_lines = 9
max_words = int(max_letters / 4)
font = QFont('Source Sans Pro', fontsize, QFont.Bold)
font.setLetterSpacing(QFont.PercentageSpacing, 100)
font.setPixelSize(fontsize)
painter.setFont(font)
seed_array = txt.split(' ')
for n in range(max_lines):
nwords = max_words
temp_seed = seed_array[:nwords]
while len(' '.join(map(str, temp_seed))) > max_letters:
nwords = nwords - 1
temp_seed = seed_array[:nwords]
painter.drawText(
QRect(0, linespace * n, self.size[0], self.size[1]),
Qt.AlignHCenter, ' '.join(map(str, temp_seed)))
del seed_array[:nwords]
painter.end()
img = bitmap.toImage()
if (self.rawnoise == False):
self.make_rawnoise()
self.make_cypherseed(img, self.rawnoise, False, is_seed)
return img
def make_rawnoise(self, create_revealer=False):
w = self.size[0]
h = self.size[1]
rawnoise = QImage(w, h, QImage.Format_Mono)
if (self.noise_seed == False):
self.noise_seed = random.SystemRandom().getrandbits(128)
self.hex_noise = format(self.noise_seed, '032x')
self.hex_noise = self.version + str(self.hex_noise)
if (self.user_input == True):
self.noise_seed = int(self.noise_seed, 16)
self.hex_noise = self.version + str(format(self.noise_seed,
'032x'))
self.code_id = self.code_hashid(self.hex_noise)
self.hex_noise = ' '.join(self.hex_noise[i:i + 4]
for i in range(0, len(self.hex_noise), 4))
entropy = binascii.unhexlify(str(format(self.noise_seed, '032x')))
code_id = binascii.unhexlify(self.version + self.code_id)
drbg = DRBG(entropy + code_id)
noise_array = bin(int.from_bytes(drbg.generate(1929), 'big'))[2:]
i = 0
for x in range(w):
for y in range(h):
rawnoise.setPixel(x, y, int(noise_array[i]))
i += 1
self.rawnoise = rawnoise
if create_revealer == True:
self.make_revealer()
self.noise_seed = False
def make_calnoise(self):
random.seed(self.calibration_noise)
w = self.size[0]
h = self.size[1]
rawnoise = QImage(w, h, QImage.Format_Mono)
for x in range(w):
for y in range(h):
rawnoise.setPixel(x, y, random.randint(0, 1))
self.calnoise = self.pixelcode_2x2(rawnoise)
def make_revealer(self):
revealer = self.pixelcode_2x2(self.rawnoise)
revealer.invertPixels()
revealer = QBitmap.fromImage(revealer)
revealer = revealer.scaled(self.f_size, Qt.KeepAspectRatio)
revealer = self.overlay_marks(revealer)
self.filename = 'Revealer - '
revealer.save(self.base_dir + self.filename + self.version + '_' +
self.code_id + '.png')
self.toPdf(QImage(revealer))
QDesktopServices.openUrl(
QUrl.fromLocalFile(
os.path.abspath(self.base_dir + self.filename + self.version +
'_' + self.code_id + '.pdf')))
def make_cypherseed(self, img, rawnoise, calibration=False, is_seed=True):
img = img.convertToFormat(QImage.Format_Mono)
p = QPainter()
p.begin(img)
p.setCompositionMode(26) #xor
p.drawImage(0, 0, rawnoise)
p.end()
cypherseed = self.pixelcode_2x2(img)
cypherseed = QBitmap.fromImage(cypherseed)
cypherseed = cypherseed.scaled(self.f_size, Qt.KeepAspectRatio)
cypherseed = self.overlay_marks(cypherseed, True, calibration)
if not is_seed:
self.filename = _('custom_secret') + '_'
self.was = _('Custom secret')
else:
self.filename = self.wallet_name + '_' + _('seed') + '_'
self.was = self.wallet_name + ' ' + _('seed')
if self.has_extension:
self.ext_warning(self.c_dialog)
if not calibration:
self.toPdf(QImage(cypherseed))
QDesktopServices.openUrl(
QUrl.fromLocalFile(
os.path.abspath(self.base_dir + self.filename +
self.version + '_' + self.code_id +
'.pdf')))
cypherseed.save(self.base_dir + self.filename + self.version +
'_' + self.code_id + '.png')
self.bcrypt(self.c_dialog)
return cypherseed
def calibration(self):
img = QImage(self.size[0], self.size[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.black)
self.make_calnoise()
img = self.overlay_marks(
self.calnoise.scaledToHeight(self.f_size.height()), False, True)
self.calibration_pdf(img)
QDesktopServices.openUrl(
QUrl.fromLocalFile(
os.path.abspath(self.base_dir + _('calibration') + '.pdf')))
return img
def toPdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.base_dir + self.filename +
self.version + '_' + self.code_id + '.pdf')
printer.setPageMargins(0, 0, 0, 0, 6)
painter = QPainter()
painter.begin(printer)
delta_h = round(image.width() / self.abstand_v)
delta_v = round(image.height() / self.abstand_h)
size_h = 2028 + ((int(self.calibration_h) * 2028 /
(2028 -
(delta_h * 2) + int(self.calibration_h))) / 2)
size_v = 1284 + ((int(self.calibration_v) * 1284 /
(1284 -
(delta_v * 2) + int(self.calibration_v))) / 2)
image = image.scaled(size_h, size_v)
painter.drawImage(553, 533, image)
wpath = QPainterPath()
wpath.addRoundedRect(QRectF(553, 533, size_h, size_v), 19, 19)
painter.setPen(QPen(Qt.black, 1))
painter.drawPath(wpath)
painter.end()
def calibration_pdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.base_dir + _('calibration') + '.pdf')
printer.setPageMargins(0, 0, 0, 0, 6)
painter = QPainter()
painter.begin(printer)
painter.drawImage(553, 533, image)
font = QFont('Source Sans Pro', 10, QFont.Bold)
painter.setFont(font)
painter.drawText(254, 277, _("Calibration sheet"))
font = QFont('Source Sans Pro', 7, QFont.Bold)
painter.setFont(font)
painter.drawText(600, 2077, _("Instructions:"))
font = QFont('Source Sans Pro', 7, QFont.Normal)
painter.setFont(font)
painter.drawText(
700, 2177,
_("1. Place this paper on a flat and well iluminated surface."))
painter.drawText(
700, 2277,
_("2. Align your Revealer borderlines to the dashed lines on the top and left."
))
painter.drawText(
700, 2377,
_("3. Press slightly the Revealer against the paper and read the numbers that best "
"match on the opposite sides. "))
painter.drawText(700, 2477, _("4. Type the numbers in the software"))
painter.end()
def pixelcode_2x2(self, img):
result = QImage(img.width() * 2,
img.height() * 2, QImage.Format_ARGB32)
white = qRgba(255, 255, 255, 0)
black = qRgba(0, 0, 0, 255)
for x in range(img.width()):
for y in range(img.height()):
c = img.pixel(QPoint(x, y))
colors = QColor(c).getRgbF()
if colors[0]:
result.setPixel(x * 2 + 1, y * 2 + 1, black)
result.setPixel(x * 2, y * 2 + 1, white)
result.setPixel(x * 2 + 1, y * 2, white)
result.setPixel(x * 2, y * 2, black)
else:
result.setPixel(x * 2 + 1, y * 2 + 1, white)
result.setPixel(x * 2, y * 2 + 1, black)
result.setPixel(x * 2 + 1, y * 2, black)
result.setPixel(x * 2, y * 2, white)
return result
def overlay_marks(self, img, is_cseed=False, calibration_sheet=False):
border_color = Qt.white
base_img = QImage(self.f_size.width(), self.f_size.height(),
QImage.Format_ARGB32)
base_img.fill(border_color)
img = QImage(img)
painter = QPainter()
painter.begin(base_img)
total_distance_h = round(base_img.width() / self.abstand_v)
dist_v = round(total_distance_h) / 2
dist_h = round(total_distance_h) / 2
img = img.scaledToWidth(base_img.width() - (2 * (total_distance_h)))
painter.drawImage(total_distance_h, total_distance_h, img)
#frame around image
pen = QPen(Qt.black, 2)
painter.setPen(pen)
#horz
painter.drawLine(0, total_distance_h, base_img.width(),
total_distance_h)
painter.drawLine(0,
base_img.height() - (total_distance_h),
base_img.width(),
base_img.height() - (total_distance_h))
#vert
painter.drawLine(total_distance_h, 0, total_distance_h,
base_img.height())
painter.drawLine(base_img.width() - (total_distance_h), 0,
base_img.width() - (total_distance_h),
base_img.height())
#border around img
border_thick = 6
Rpath = QPainterPath()
Rpath.addRect(
QRectF((total_distance_h) + (border_thick / 2),
(total_distance_h) + (border_thick / 2),
base_img.width() - ((total_distance_h) * 2) -
((border_thick) - 1),
(base_img.height() -
((total_distance_h)) * 2) - ((border_thick) - 1)))
pen = QPen(Qt.black, border_thick)
pen.setJoinStyle(Qt.MiterJoin)
painter.setPen(pen)
painter.drawPath(Rpath)
Bpath = QPainterPath()
Bpath.addRect(
QRectF((total_distance_h), (total_distance_h),
base_img.width() - ((total_distance_h) * 2),
(base_img.height() - ((total_distance_h)) * 2)))
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawPath(Bpath)
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawLine(0,
base_img.height() / 2, total_distance_h,
base_img.height() / 2)
painter.drawLine(base_img.width() / 2, 0,
base_img.width() / 2, total_distance_h)
painter.drawLine(base_img.width() - total_distance_h,
base_img.height() / 2, base_img.width(),
base_img.height() / 2)
painter.drawLine(base_img.width() / 2, base_img.height(),
base_img.width() / 2,
base_img.height() - total_distance_h)
#print code
f_size = 37
QFontDatabase.addApplicationFont(
os.path.join(os.path.dirname(__file__), 'DejaVuSansMono-Bold.ttf'))
font = QFont("DejaVu Sans Mono", f_size - 11, QFont.Bold)
font.setPixelSize(35)
painter.setFont(font)
if not calibration_sheet:
if is_cseed: #its a secret
painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0,
base_img.height() - dist_v, base_img.width(),
base_img.height() - (dist_v))
painter.drawLine(base_img.width() - (dist_h), 0,
base_img.width() - (dist_h),
base_img.height())
painter.drawImage(
((total_distance_h)) + 11, ((total_distance_h)) + 11,
QImage(':icons/electrumb.png').scaledToWidth(
2.1 * (total_distance_h), Qt.SmoothTransformation))
painter.setPen(QPen(Qt.white, border_thick * 8))
painter.drawLine(
base_img.width() - ((total_distance_h)) -
(border_thick * 8) / 2 - (border_thick / 2) - 2,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8) / 2) - (border_thick / 2) - 2,
base_img.width() - ((total_distance_h)) -
(border_thick * 8) / 2 - (border_thick / 2) - 2 - 77,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8) / 2) - (border_thick / 2) - 2)
painter.setPen(QColor(0, 0, 0, 255))
painter.drawText(
QRect(
0,
base_img.height() - 107,
base_img.width() - total_distance_h - border_thick -
11,
base_img.height() - total_distance_h - border_thick),
Qt.AlignRight, self.version + '_' + self.code_id)
painter.end()
else: # revealer
painter.setPen(QPen(border_color, 17))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0,
base_img.height() - dist_v, base_img.width(),
base_img.height() - (dist_v))
painter.drawLine(base_img.width() - (dist_h), 0,
base_img.width() - (dist_h),
base_img.height())
painter.setPen(QPen(Qt.black, 2))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0,
base_img.height() - dist_v, base_img.width(),
base_img.height() - (dist_v))
painter.drawLine(base_img.width() - (dist_h), 0,
base_img.width() - (dist_h),
base_img.height())
logo = QImage(':icons/revealer_c.png').scaledToWidth(
1.3 * (total_distance_h))
painter.drawImage((total_distance_h) + (border_thick),
((total_distance_h)) + (border_thick), logo,
Qt.SmoothTransformation)
#frame around logo
painter.setPen(QPen(Qt.black, border_thick))
painter.drawLine(
total_distance_h + border_thick,
total_distance_h + logo.height() + 3 * (border_thick / 2),
total_distance_h + logo.width() + border_thick,
total_distance_h + logo.height() + 3 * (border_thick / 2))
painter.drawLine(
logo.width() + total_distance_h + 3 * (border_thick / 2),
total_distance_h + (border_thick),
total_distance_h + logo.width() + 3 * (border_thick / 2),
total_distance_h + logo.height() + (border_thick))
#frame around code/qr
qr_size = 179
painter.drawLine((base_img.width() - ((total_distance_h)) -
(border_thick / 2) - 2) - qr_size,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8)) - (border_thick / 2) - 2,
(base_img.width() / 2 +
(total_distance_h / 2) - border_thick -
(border_thick * 8) / 2) - qr_size,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8)) - (border_thick / 2) - 2)
painter.drawLine(
(base_img.width() / 2 +
(total_distance_h / 2) - border_thick -
(border_thick * 8) / 2) - qr_size,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8)) - (border_thick / 2) - 2,
base_img.width() / 2 + (total_distance_h / 2) -
border_thick - (border_thick * 8) / 2 - qr_size,
((base_img.height() - ((total_distance_h))) -
(border_thick / 2) - 2))
painter.setPen(QPen(Qt.white, border_thick * 8))
painter.drawLine(
base_img.width() - ((total_distance_h)) -
(border_thick * 8) / 2 - (border_thick / 2) - 2,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8) / 2) - (border_thick / 2) - 2,
base_img.width() / 2 + (total_distance_h / 2) -
border_thick - qr_size,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8) / 2) - (border_thick / 2) - 2)
painter.setPen(QColor(0, 0, 0, 255))
painter.drawText(
QRect(((base_img.width() / 2) + 21) - qr_size,
base_img.height() - 107,
base_img.width() - total_distance_h - border_thick -
93,
base_img.height() - total_distance_h - border_thick),
Qt.AlignLeft, self.hex_noise.upper())
painter.drawText(
QRect(
0,
base_img.height() - 107,
base_img.width() - total_distance_h - border_thick -
3 - qr_size,
base_img.height() - total_distance_h - border_thick),
Qt.AlignRight, self.code_id)
# draw qr code
qr_qt = self.paintQR(self.hex_noise.upper() + self.code_id)
target = QRectF(base_img.width() - 65 - qr_size,
base_img.height() - 65 - qr_size, qr_size,
qr_size)
painter.drawImage(target, qr_qt)
painter.setPen(QPen(Qt.black, 4))
painter.drawLine(base_img.width() - 65 - qr_size,
base_img.height() - 65 - qr_size,
base_img.width() - 65 - qr_size,
(base_img.height() - ((total_distance_h))) -
((border_thick * 8)) - (border_thick / 2) - 4)
painter.drawLine(base_img.width() - 65 - qr_size,
base_img.height() - 65 - qr_size,
base_img.width() - 65,
base_img.height() - 65 - qr_size)
painter.end()
else: # calibration only
painter.end()
cal_img = QImage(self.f_size.width() + 100,
self.f_size.height() + 100, QImage.Format_ARGB32)
cal_img.fill(Qt.white)
cal_painter = QPainter()
cal_painter.begin(cal_img)
cal_painter.drawImage(0, 0, base_img)
#black lines in the middle of border top left only
cal_painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
cal_painter.drawLine(0, dist_v, base_img.width(), dist_v)
cal_painter.drawLine(dist_h, 0, dist_h, base_img.height())
pen = QPen(Qt.black, 2, Qt.DashDotDotLine)
cal_painter.setPen(pen)
n = 15
cal_painter.setFont(QFont("DejaVu Sans Mono", 21, QFont.Bold))
for x in range(-n, n):
#lines on bottom (vertical calibration)
cal_painter.drawLine((((base_img.width()) / (n * 2)) *
(x)) + (base_img.width() / 2) - 13,
x + 2 + base_img.height() - (dist_v),
(((base_img.width()) / (n * 2)) *
(x)) + (base_img.width() / 2) + 13,
x + 2 + base_img.height() - (dist_v))
num_pos = 9
if x > 9: num_pos = 17
if x < 0: num_pos = 20
if x < -9: num_pos = 27
cal_painter.drawText((((base_img.width()) / (n * 2)) *
(x)) + (base_img.width() / 2) - num_pos,
50 + base_img.height() - (dist_v), str(x))
#lines on the right (horizontal calibrations)
cal_painter.drawLine(
x + 2 + (base_img.width() - (dist_h)),
((base_img.height() / (2 * n)) * (x)) +
(base_img.height() / n) + (base_img.height() / 2) - 13,
x + 2 + (base_img.width() - (dist_h)),
((base_img.height() / (2 * n)) * (x)) +
(base_img.height() / n) + (base_img.height() / 2) + 13)
cal_painter.drawText(30 + (base_img.width() - (dist_h)),
((base_img.height() / (2 * n)) *
(x)) + (base_img.height() / 2) + 13,
str(x))
cal_painter.end()
base_img = cal_img
return base_img
def paintQR(self, data):
if not data:
return
qr = qrcode.QRCode()
qr.add_data(data)
matrix = qr.get_matrix()
k = len(matrix)
border_color = Qt.white
base_img = QImage(k * 5, k * 5, QImage.Format_ARGB32)
base_img.fill(border_color)
qrpainter = QPainter()
qrpainter.begin(base_img)
boxsize = 5
size = k * boxsize
left = (base_img.width() - size) / 2
top = (base_img.height() - size) / 2
qrpainter.setBrush(Qt.black)
qrpainter.setPen(Qt.black)
for r in range(k):
for c in range(k):
if matrix[r][c]:
qrpainter.drawRect(left + c * boxsize, top + r * boxsize,
boxsize - 1, boxsize - 1)
qrpainter.end()
return base_img
def calibration_dialog(self, window):
d = WindowModalDialog(window,
_("Revealer - Printer calibration settings"))
d.setMinimumSize(100, 200)
vbox = QVBoxLayout(d)
vbox.addWidget(
QLabel(''.join([
"<br/>",
_("If you have an old printer, or want optimal precision"),
"<br/>",
_("print the calibration pdf and follow the instructions "),
"<br/>",
"<br/>",
])))
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
cprint = QPushButton(_("Open calibration pdf"))
cprint.clicked.connect(self.calibration)
vbox.addWidget(cprint)
vbox.addWidget(QLabel(_('Calibration values:')))
grid = QGridLayout()
vbox.addLayout(grid)
grid.addWidget(QLabel(_('Right side')), 0, 0)
horizontal = QLineEdit()
horizontal.setText(str(self.calibration_h))
grid.addWidget(horizontal, 0, 1)
grid.addWidget(QLabel(_('Bottom')), 1, 0)
vertical = QLineEdit()
vertical.setText(str(self.calibration_v))
grid.addWidget(vertical, 1, 1)
vbox.addStretch()
vbox.addSpacing(13)
vbox.addLayout(Buttons(CloseButton(d), OkButton(d)))
if not d.exec_():
return
self.calibration_h = int(Decimal(horizontal.text()))
self.config.set_key('calibration_h', self.calibration_h)
self.calibration_v = int(Decimal(vertical.text()))
self.config.set_key('calibration_v', self.calibration_v)
def cypherseed_dialog(self, window):
d = WindowModalDialog(window, "Revealer")
d.setMinimumWidth(420)
self.c_dialog = d
self.vbox = QVBoxLayout(d)
self.vbox.addSpacing(21)
logo = QLabel()
self.vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
self.vbox.addSpacing(42)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Generate encrypted seed backup"))
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(14)
self.vbox.addWidget(WWLabel(_("OR type any secret below:")))
self.text = ScanQRTextEdit()
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel(
"<font color='red'>" +
_("This version supports a maximum of 216 characters.") +
"</font>")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Generate custom secret encrypted backup"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addWidget(
QLabel(''.join([
"<b>" + _("WARNING") + "</b>: " +
_("Revealer is a one-time-pad and should be used only once."),
'<br/>',
_("Multiple secrets encrypted for the same Revealer can be attacked."
),
'<br/>',
])))
self.vbox.addSpacing(11)
self.vbox.addSpacing(21)
self.vbox.addLayout(Buttons(CloseButton(d)))
return bool(d.exec_())
class Plugin(RevealerPlugin):
MAX_PLAINTEXT_LEN = 189 # chars
def __init__(self, parent, config, name):
RevealerPlugin.__init__(self, parent, config, name)
self.base_dir = os.path.join(config.electrum_path(), 'revealer')
if self.config.get('calibration_h') is None:
self.config.set_key('calibration_h', 0)
if self.config.get('calibration_v') is None:
self.config.set_key('calibration_v', 0)
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
self.f_size = QSize(1014*2, 642*2)
self.abstand_h = 21
self.abstand_v = 34
self.calibration_noise = int('10' * 128)
self.rawnoise = False
make_dir(self.base_dir)
self.extension = False
@hook
def create_status_bar(self, parent):
b = StatusBarButton(read_QIcon('revealer.png'), "Revealer "+_("Visual Cryptography Plugin"),
partial(self.setup_dialog, parent))
parent.addPermanentWidget(b)
def requires_settings(self):
return True
def settings_widget(self, window):
return EnterButton(_('Printer Calibration'), partial(self.calibration_dialog, window))
def password_dialog(self, msg=None, parent=None):
from electrum_dash.gui.qt.password_dialog import PasswordDialog
parent = parent or self
d = PasswordDialog(parent, msg)
return d.run()
def get_seed(self):
password = None
if self.wallet.has_keystore_encryption():
password = self.password_dialog(parent=self.d.parent())
if not password:
raise UserCancelled()
keystore = self.wallet.get_keystore()
if not keystore or not keystore.has_seed():
return
self.extension = bool(keystore.get_passphrase(password))
return keystore.get_seed(password)
def setup_dialog(self, window):
self.wallet = window.parent().wallet
self.update_wallet_name(self.wallet)
self.user_input = False
self.d = WindowModalDialog(window, "Setup Dialog")
self.d.setMinimumWidth(500)
self.d.setMinimumHeight(210)
self.d.setMaximumHeight(320)
self.d.setContentsMargins(11,11,1,1)
self.hbox = QHBoxLayout(self.d)
vbox = QVBoxLayout()
logo = QLabel()
self.hbox.addWidget(logo)
logo.setPixmap(QPixmap(icon_path('revealer.png')))
logo.setAlignment(Qt.AlignLeft)
self.hbox.addSpacing(16)
vbox.addWidget(WWLabel("<b>"+_("Revealer Visual Cryptography Plugin")+"</b><br><br>"
+_("To encrypt a secret, first create or load noise.")+"<br/>"))
vbox.addSpacing(7)
bcreate = QPushButton(_("Create a new Revealer"))
bcreate.setMaximumWidth(181)
bcreate.setDefault(True)
vbox.addWidget(bcreate, Qt.AlignCenter)
self.load_noise = ScanQRTextEdit(config=self.config)
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
self.hbox.addLayout(vbox)
vbox.addWidget(WWLabel(_("or type an existing revealer code below and click 'next':")))
vbox.addWidget(self.load_noise)
vbox.addSpacing(3)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(partial(self.cypherseed_dialog, window))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
self.logger.exception('')
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
return bool(self.d.exec_())
def get_noise(self):
text = self.load_noise.text()
return ''.join(text.split()).lower()
def on_edit(self):
txt = self.get_noise()
versioned_seed = self.get_versioned_seed_from_user_input(txt)
if versioned_seed:
self.versioned_seed = versioned_seed
self.user_input = bool(versioned_seed)
self.next_button.setEnabled(bool(versioned_seed))
def make_digital(self, dialog):
self.make_rawnoise(True)
self.bdone(dialog)
self.d.close()
def get_path_to_revealer_file(self, ext: str= '') -> str:
version = self.versioned_seed.version
code_id = self.versioned_seed.checksum
filename = self.filename_prefix + version + "_" + code_id + ext
path = os.path.join(self.base_dir, filename)
return os.path.normcase(os.path.abspath(path))
def get_path_to_calibration_file(self):
path = os.path.join(self.base_dir, 'calibration.pdf')
return os.path.normcase(os.path.abspath(path))
def bcrypt(self, dialog):
self.rawnoise = False
version = self.versioned_seed.version
code_id = self.versioned_seed.checksum
dialog.show_message(''.join([_("{} encrypted for Revealer {}_{} saved as PNG and PDF at: ").format(self.was, version, code_id),
"<b>", self.get_path_to_revealer_file(), "</b>", "<br/>",
"<br/>", "<b>", _("Always check your backups.")]),
rich_text=True)
dialog.close()
def ext_warning(self, dialog):
dialog.show_message(''.join(["<b>",_("Warning"), ": </b>",
_("your seed extension will <b>not</b> be included in the encrypted backup.")]),
rich_text=True)
dialog.close()
def bdone(self, dialog):
version = self.versioned_seed.version
code_id = self.versioned_seed.checksum
dialog.show_message(''.join([_("Digital Revealer ({}_{}) saved as PNG and PDF at:").format(version, code_id),
"<br/>","<b>", self.get_path_to_revealer_file(), '</b>']),
rich_text=True)
def customtxt_limits(self):
txt = self.text.text()
self.max_chars.setVisible(False)
self.char_count.setText(f"({len(txt)}/{self.MAX_PLAINTEXT_LEN})")
if len(txt)>0:
self.ctext.setEnabled(True)
if len(txt) > self.MAX_PLAINTEXT_LEN:
self.text.setPlainText(txt[:self.MAX_PLAINTEXT_LEN])
self.max_chars.setVisible(True)
def t(self):
self.txt = self.text.text()
self.seed_img(is_seed=False)
def warn_old_revealer(self):
if self.versioned_seed.version == '0':
link = "https://revealer.cc/revealer-warning-and-upgrade/"
self.d.show_warning(("<b>{warning}: </b>{ver0}<br>"
"{url}<br>"
"{risk}")
.format(warning=_("Warning"),
ver0=_("Revealers starting with 0 are not secure due to a vulnerability."),
url=_("More info at: {}").format(f'<a href="{link}">{link}</a>'),
risk=_("Proceed at your own risk.")),
rich_text=True)
def cypherseed_dialog(self, window):
self.warn_old_revealer()
d = WindowModalDialog(window, "Encryption Dialog")
d.setMinimumWidth(500)
d.setMinimumHeight(210)
d.setMaximumHeight(450)
d.setContentsMargins(11, 11, 1, 1)
self.c_dialog = d
hbox = QHBoxLayout(d)
self.vbox = QVBoxLayout()
logo = QLabel()
hbox.addWidget(logo)
logo.setPixmap(QPixmap(icon_path('revealer.png')))
logo.setAlignment(Qt.AlignLeft)
hbox.addSpacing(16)
self.vbox.addWidget(WWLabel("<b>" + _("Revealer Visual Cryptography Plugin") + "</b><br><br>"
+ _("Ready to encrypt for revealer {}")
.format(self.versioned_seed.version+'_'+self.versioned_seed.checksum)))
self.vbox.addSpacing(11)
hbox.addLayout(self.vbox)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Encrypt {}'s seed").format(self.wallet_name))
cprint.setMaximumWidth(250)
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(1)
self.vbox.addWidget(WWLabel("<b>"+_("OR")+"</b> "+_("type a custom alphanumerical secret below:")))
self.text = ScanQRTextEdit(config=self.config)
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel("<font color='red'>"
+ _("This version supports a maximum of {} characters.").format(self.MAX_PLAINTEXT_LEN)
+"</font>")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Encrypt custom secret"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addLayout(Buttons(CloseButton(d)))
self.vbox.addWidget(
QLabel("<br>"+"<b>" + _("Warning ") + "</b>: " + _("each Revealer is a one-time-pad, use it for a single secret.")))
return bool(d.exec_())
def update_wallet_name(self, name):
self.wallet_name = str(name)
def seed_img(self, is_seed = True):
if is_seed:
try:
cseed = self.get_seed()
except UserCancelled:
return
except InvalidPassword as e:
self.d.show_error(str(e))
return
if not cseed:
self.d.show_message(_("This wallet has no seed"))
return
txt = cseed.upper()
else:
txt = self.txt.upper()
img = QImage(self.SIZE[0], self.SIZE[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.white)
painter = QPainter()
painter.begin(bitmap)
QFontDatabase.addApplicationFont(os.path.join(os.path.dirname(__file__), 'SourceSansPro-Bold.otf'))
if len(txt) < 102 :
fontsize = 15
linespace = 15
max_letters = 17
max_lines = 6
max_words = 3
else:
fontsize = 12
linespace = 10
max_letters = 21
max_lines = 9
max_words = int(max_letters/4)
font = QFont('Source Sans Pro', fontsize, QFont.Bold)
font.setLetterSpacing(QFont.PercentageSpacing, 100)
font.setPixelSize(fontsize)
painter.setFont(font)
seed_array = txt.split(' ')
for n in range(max_lines):
nwords = max_words
temp_seed = seed_array[:nwords]
while len(' '.join(map(str, temp_seed))) > max_letters:
nwords = nwords - 1
temp_seed = seed_array[:nwords]
painter.drawText(QRect(0, linespace*n, self.SIZE[0], self.SIZE[1]), Qt.AlignHCenter, ' '.join(map(str, temp_seed)))
del seed_array[:nwords]
painter.end()
img = bitmap.toImage()
if (self.rawnoise == False):
self.make_rawnoise()
self.make_cypherseed(img, self.rawnoise, False, is_seed)
return img
def make_rawnoise(self, create_revealer=False):
if not self.user_input:
self.versioned_seed = self.gen_random_versioned_seed()
assert self.versioned_seed
w, h = self.SIZE
rawnoise = QImage(w, h, QImage.Format_Mono)
noise_map = self.get_noise_map(self.versioned_seed)
for (x,y), pixel in noise_map.items():
rawnoise.setPixel(x, y, pixel)
self.rawnoise = rawnoise
if create_revealer:
self.make_revealer()
def make_calnoise(self):
random.seed(self.calibration_noise)
w, h = self.SIZE
rawnoise = QImage(w, h, QImage.Format_Mono)
for x in range(w):
for y in range(h):
rawnoise.setPixel(x,y,random.randint(0, 1))
self.calnoise = self.pixelcode_2x2(rawnoise)
def make_revealer(self):
revealer = self.pixelcode_2x2(self.rawnoise)
revealer.invertPixels()
revealer = QBitmap.fromImage(revealer)
revealer = revealer.scaled(self.f_size, Qt.KeepAspectRatio)
revealer = self.overlay_marks(revealer)
self.filename_prefix = 'revealer_'
revealer.save(self.get_path_to_revealer_file('.png'))
self.toPdf(QImage(revealer))
def make_cypherseed(self, img, rawnoise, calibration=False, is_seed = True):
img = img.convertToFormat(QImage.Format_Mono)
p = QPainter()
p.begin(img)
p.setCompositionMode(26) #xor
p.drawImage(0, 0, rawnoise)
p.end()
cypherseed = self.pixelcode_2x2(img)
cypherseed = QBitmap.fromImage(cypherseed)
cypherseed = cypherseed.scaled(self.f_size, Qt.KeepAspectRatio)
cypherseed = self.overlay_marks(cypherseed, True, calibration)
if not is_seed:
self.filename_prefix = 'custom_secret_'
self.was = _('Custom secret')
else:
self.filename_prefix = self.wallet_name + '_seed_'
self.was = self.wallet_name + ' ' + _('seed')
if self.extension:
self.ext_warning(self.c_dialog)
if not calibration:
self.toPdf(QImage(cypherseed))
cypherseed.save(self.get_path_to_revealer_file('.png'))
self.bcrypt(self.c_dialog)
return cypherseed
def calibration(self):
img = QImage(self.SIZE[0], self.SIZE[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.black)
self.make_calnoise()
img = self.overlay_marks(self.calnoise.scaledToHeight(self.f_size.height()), False, True)
self.calibration_pdf(img)
QDesktopServices.openUrl(QUrl.fromLocalFile(self.get_path_to_calibration_file()))
return img
def toPdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.get_path_to_revealer_file('.pdf'))
printer.setPageMargins(0,0,0,0,6)
painter = QPainter()
painter.begin(printer)
delta_h = round(image.width()/self.abstand_v)
delta_v = round(image.height()/self.abstand_h)
size_h = 2028+((int(self.calibration_h)*2028/(2028-(delta_h*2)+int(self.calibration_h)))/2)
size_v = 1284+((int(self.calibration_v)*1284/(1284-(delta_v*2)+int(self.calibration_v)))/2)
image = image.scaled(size_h, size_v)
painter.drawImage(553,533, image)
wpath = QPainterPath()
wpath.addRoundedRect(QRectF(553,533, size_h, size_v), 19, 19)
painter.setPen(QPen(Qt.black, 1))
painter.drawPath(wpath)
painter.end()
def calibration_pdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.get_path_to_calibration_file())
printer.setPageMargins(0,0,0,0,6)
painter = QPainter()
painter.begin(printer)
painter.drawImage(553,533, image)
font = QFont('Source Sans Pro', 10, QFont.Bold)
painter.setFont(font)
painter.drawText(254,277, _("Calibration sheet"))
font = QFont('Source Sans Pro', 7, QFont.Bold)
painter.setFont(font)
painter.drawText(600,2077, _("Instructions:"))
font = QFont('Source Sans Pro', 7, QFont.Normal)
painter.setFont(font)
painter.drawText(700, 2177, _("1. Place this paper on a flat and well iluminated surface."))
painter.drawText(700, 2277, _("2. Align your Revealer borderlines to the dashed lines on the top and left."))
painter.drawText(700, 2377, _("3. Press slightly the Revealer against the paper and read the numbers that best "
"match on the opposite sides. "))
painter.drawText(700, 2477, _("4. Type the numbers in the software"))
painter.end()
def pixelcode_2x2(self, img):
result = QImage(img.width()*2, img.height()*2, QImage.Format_ARGB32)
white = qRgba(255,255,255,0)
black = qRgba(0,0,0,255)
for x in range(img.width()):
for y in range(img.height()):
c = img.pixel(QPoint(x,y))
colors = QColor(c).getRgbF()
if colors[0]:
result.setPixel(x*2+1,y*2+1, black)
result.setPixel(x*2,y*2+1, white)
result.setPixel(x*2+1,y*2, white)
result.setPixel(x*2, y*2, black)
else:
result.setPixel(x*2+1,y*2+1, white)
result.setPixel(x*2,y*2+1, black)
result.setPixel(x*2+1,y*2, black)
result.setPixel(x*2, y*2, white)
return result
def overlay_marks(self, img, is_cseed=False, calibration_sheet=False):
border_color = Qt.white
base_img = QImage(self.f_size.width(),self.f_size.height(), QImage.Format_ARGB32)
base_img.fill(border_color)
img = QImage(img)
painter = QPainter()
painter.begin(base_img)
total_distance_h = round(base_img.width() / self.abstand_v)
dist_v = round(total_distance_h) / 2
dist_h = round(total_distance_h) / 2
img = img.scaledToWidth(base_img.width() - (2 * (total_distance_h)))
painter.drawImage(total_distance_h,
total_distance_h,
img)
#frame around image
pen = QPen(Qt.black, 2)
painter.setPen(pen)
#horz
painter.drawLine(0, total_distance_h, base_img.width(), total_distance_h)
painter.drawLine(0, base_img.height()-(total_distance_h), base_img.width(), base_img.height()-(total_distance_h))
#vert
painter.drawLine(total_distance_h, 0, total_distance_h, base_img.height())
painter.drawLine(base_img.width()-(total_distance_h), 0, base_img.width()-(total_distance_h), base_img.height())
#border around img
border_thick = 6
Rpath = QPainterPath()
Rpath.addRect(QRectF((total_distance_h)+(border_thick/2),
(total_distance_h)+(border_thick/2),
base_img.width()-((total_distance_h)*2)-((border_thick)-1),
(base_img.height()-((total_distance_h))*2)-((border_thick)-1)))
pen = QPen(Qt.black, border_thick)
pen.setJoinStyle (Qt.MiterJoin)
painter.setPen(pen)
painter.drawPath(Rpath)
Bpath = QPainterPath()
Bpath.addRect(QRectF((total_distance_h), (total_distance_h),
base_img.width()-((total_distance_h)*2), (base_img.height()-((total_distance_h))*2)))
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawPath(Bpath)
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawLine(0, base_img.height()/2, total_distance_h, base_img.height()/2)
painter.drawLine(base_img.width()/2, 0, base_img.width()/2, total_distance_h)
painter.drawLine(base_img.width()-total_distance_h, base_img.height()/2, base_img.width(), base_img.height()/2)
painter.drawLine(base_img.width()/2, base_img.height(), base_img.width()/2, base_img.height() - total_distance_h)
#print code
f_size = 37
QFontDatabase.addApplicationFont(os.path.join(os.path.dirname(__file__), 'DejaVuSansMono-Bold.ttf'))
font = QFont("DejaVu Sans Mono", f_size-11, QFont.Bold)
font.setPixelSize(35)
painter.setFont(font)
if not calibration_sheet:
if is_cseed: #its a secret
painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
painter.drawImage(((total_distance_h))+11, ((total_distance_h))+11,
QImage(icon_path('electrumb.png')).scaledToWidth(2.1*(total_distance_h), Qt.SmoothTransformation))
painter.setPen(QPen(Qt.white, border_thick*8))
painter.drawLine(base_img.width()-((total_distance_h))-(border_thick*8)/2-(border_thick/2)-2,
(base_img.height()-((total_distance_h)))-((border_thick*8)/2)-(border_thick/2)-2,
base_img.width()-((total_distance_h))-(border_thick*8)/2-(border_thick/2)-2 - 77,
(base_img.height()-((total_distance_h)))-((border_thick*8)/2)-(border_thick/2)-2)
painter.setPen(QColor(0,0,0,255))
painter.drawText(QRect(0, base_img.height()-107, base_img.width()-total_distance_h - border_thick - 11,
base_img.height()-total_distance_h - border_thick), Qt.AlignRight,
self.versioned_seed.version + '_'+self.versioned_seed.checksum)
painter.end()
else: # revealer
painter.setPen(QPen(border_color, 17))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
painter.setPen(QPen(Qt.black, 2))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
logo = QImage(icon_path('revealer_c.png')).scaledToWidth(1.3*(total_distance_h))
painter.drawImage((total_distance_h)+ (border_thick), ((total_distance_h))+ (border_thick), logo, Qt.SmoothTransformation)
#frame around logo
painter.setPen(QPen(Qt.black, border_thick))
painter.drawLine(total_distance_h+border_thick, total_distance_h+logo.height()+3*(border_thick/2),
total_distance_h+logo.width()+border_thick, total_distance_h+logo.height()+3*(border_thick/2))
painter.drawLine(logo.width()+total_distance_h+3*(border_thick/2), total_distance_h+(border_thick),
total_distance_h+logo.width()+3*(border_thick/2), total_distance_h+logo.height()+(border_thick))
#frame around code/qr
qr_size = 179
painter.drawLine((base_img.width()-((total_distance_h))-(border_thick/2)-2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2,
(base_img.width()/2+(total_distance_h/2)-border_thick-(border_thick*8)/2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2)
painter.drawLine((base_img.width()/2+(total_distance_h/2)-border_thick-(border_thick*8)/2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2,
base_img.width()/2 + (total_distance_h/2)-border_thick-(border_thick*8)/2-qr_size,
((base_img.height()-((total_distance_h)))-(border_thick/2)-2))
painter.setPen(QPen(Qt.white, border_thick * 8))
painter.drawLine(
base_img.width() - ((total_distance_h)) - (border_thick * 8) / 2 - (border_thick / 2) - 2,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8) / 2) - (border_thick / 2) - 2,
base_img.width() / 2 + (total_distance_h / 2) - border_thick - qr_size,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8) / 2) - (border_thick / 2) - 2)
painter.setPen(QColor(0,0,0,255))
painter.drawText(QRect(((base_img.width()/2) +21)-qr_size, base_img.height()-107,
base_img.width()-total_distance_h - border_thick -93,
base_img.height()-total_distance_h - border_thick), Qt.AlignLeft, self.versioned_seed.get_ui_string_version_plus_seed())
painter.drawText(QRect(0, base_img.height()-107, base_img.width()-total_distance_h - border_thick -3 -qr_size,
base_img.height()-total_distance_h - border_thick), Qt.AlignRight, self.versioned_seed.checksum)
# draw qr code
qr_qt = self.paintQR(self.versioned_seed.get_ui_string_version_plus_seed()
+ self.versioned_seed.checksum)
target = QRectF(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
qr_size, qr_size)
painter.drawImage(target, qr_qt)
painter.setPen(QPen(Qt.black, 4))
painter.drawLine(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
base_img.width() - 65 - qr_size,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8)) - (border_thick / 2) - 4
)
painter.drawLine(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
base_img.width() - 65,
base_img.height()-65-qr_size
)
painter.end()
else: # calibration only
painter.end()
cal_img = QImage(self.f_size.width() + 100, self.f_size.height() + 100,
QImage.Format_ARGB32)
cal_img.fill(Qt.white)
cal_painter = QPainter()
cal_painter.begin(cal_img)
cal_painter.drawImage(0,0, base_img)
#black lines in the middle of border top left only
cal_painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
cal_painter.drawLine(0, dist_v, base_img.width(), dist_v)
cal_painter.drawLine(dist_h, 0, dist_h, base_img.height())
pen = QPen(Qt.black, 2, Qt.DashDotDotLine)
cal_painter.setPen(pen)
n=15
cal_painter.setFont(QFont("DejaVu Sans Mono", 21, QFont.Bold))
for x in range(-n,n):
#lines on bottom (vertical calibration)
cal_painter.drawLine((((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)-13,
x+2+base_img.height()-(dist_v),
(((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)+13,
x+2+base_img.height()-(dist_v))
num_pos = 9
if x > 9 : num_pos = 17
if x < 0 : num_pos = 20
if x < -9: num_pos = 27
cal_painter.drawText((((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)-num_pos,
50+base_img.height()-(dist_v),
str(x))
#lines on the right (horizontal calibrations)
cal_painter.drawLine(x+2+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/n)+(base_img.height()/2)-13,
x+2+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/n)+(base_img.height()/2)+13)
cal_painter.drawText(30+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/2)+13, str(x))
cal_painter.end()
base_img = cal_img
return base_img
def paintQR(self, data):
if not data:
return
qr = qrcode.QRCode()
qr.add_data(data)
matrix = qr.get_matrix()
k = len(matrix)
border_color = Qt.white
base_img = QImage(k * 5, k * 5, QImage.Format_ARGB32)
base_img.fill(border_color)
qrpainter = QPainter()
qrpainter.begin(base_img)
boxsize = 5
size = k * boxsize
left = (base_img.width() - size)/2
top = (base_img.height() - size)/2
qrpainter.setBrush(Qt.black)
qrpainter.setPen(Qt.black)
for r in range(k):
for c in range(k):
if matrix[r][c]:
qrpainter.drawRect(left+c*boxsize, top+r*boxsize, boxsize - 1, boxsize - 1)
qrpainter.end()
return base_img
def calibration_dialog(self, window):
d = WindowModalDialog(window, _("Revealer - Printer calibration settings"))
d.setMinimumSize(100, 200)
vbox = QVBoxLayout(d)
vbox.addWidget(QLabel(''.join(["<br/>", _("If you have an old printer, or want optimal precision"),"<br/>",
_("print the calibration pdf and follow the instructions "), "<br/>","<br/>",
])))
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
cprint = QPushButton(_("Open calibration pdf"))
cprint.clicked.connect(self.calibration)
vbox.addWidget(cprint)
vbox.addWidget(QLabel(_('Calibration values:')))
grid = QGridLayout()
vbox.addLayout(grid)
grid.addWidget(QLabel(_('Right side')), 0, 0)
horizontal = QLineEdit()
horizontal.setText(str(self.calibration_h))
grid.addWidget(horizontal, 0, 1)
grid.addWidget(QLabel(_('Bottom')), 1, 0)
vertical = QLineEdit()
vertical.setText(str(self.calibration_v))
grid.addWidget(vertical, 1, 1)
vbox.addStretch()
vbox.addSpacing(13)
vbox.addLayout(Buttons(CloseButton(d), OkButton(d)))
if not d.exec_():
return
self.calibration_h = int(Decimal(horizontal.text()))
self.config.set_key('calibration_h', self.calibration_h)
self.calibration_v = int(Decimal(vertical.text()))
self.config.set_key('calibration_v', self.calibration_v)
class Plugin(BasePlugin):
def __init__(self, parent, config, name):
BasePlugin.__init__(self, parent, config, name)
self.base_dir = config.electrum_path()+'/revealer/'
if self.config.get('calibration_h') is None:
self.config.set_key('calibration_h', 0)
if self.config.get('calibration_v') is None:
self.config.set_key('calibration_v', 0)
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
self.version = '1'
self.size = (159, 97)
self.f_size = QSize(1014*2, 642*2)
self.abstand_h = 21
self.abstand_v = 34
self.calibration_noise = int('10' * 128)
self.rawnoise = False
make_dir(self.base_dir)
@hook
def set_seed(self, seed, has_extension, parent):
self.cseed = seed.upper()
self.has_extension = has_extension
parent.addButton(':icons/revealer.png', partial(self.setup_dialog, parent), "Revealer"+_(" secret backup utility"))
def requires_settings(self):
return True
def settings_widget(self, window):
return EnterButton(_('Printer Calibration'), partial(self.calibration_dialog, window))
def setup_dialog(self, window):
self.update_wallet_name(window.parent().parent().wallet)
self.user_input = False
self.noise_seed = False
self.d = WindowModalDialog(window, "Revealer")
self.d.setMinimumWidth(420)
vbox = QVBoxLayout(self.d)
vbox.addSpacing(21)
logo = QLabel()
vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
vbox.addSpacing(42)
self.load_noise = ScanQRTextEdit()
self.load_noise.setTabChangesFocus(True)
self.load_noise.textChanged.connect(self.on_edit)
self.load_noise.setMaximumHeight(33)
vbox.addWidget(WWLabel("<b>"+_("Enter your physical revealer code:")+"<b>"))
vbox.addWidget(self.load_noise)
vbox.addSpacing(11)
self.next_button = QPushButton(_("Next"), self.d)
self.next_button.setDefault(True)
self.next_button.setEnabled(False)
vbox.addLayout(Buttons(self.next_button))
self.next_button.clicked.connect(self.d.close)
self.next_button.clicked.connect(partial(self.cypherseed_dialog, window))
vbox.addSpacing(21)
vbox.addWidget(WWLabel(_("or, alternatively: ")))
bcreate = QPushButton(_("Create a digital Revealer"))
def mk_digital():
try:
self.make_digital(self.d)
except Exception:
traceback.print_exc(file=sys.stdout)
else:
self.cypherseed_dialog(window)
bcreate.clicked.connect(mk_digital)
vbox.addWidget(bcreate)
vbox.addSpacing(11)
vbox.addWidget(QLabel(''.join([ "<b>"+_("WARNING")+ "</b>:" + _("Printing a revealer and encrypted seed"), '<br/>',
_("on the same printer is not trustless towards the printer."), '<br/>',
])))
vbox.addSpacing(11)
vbox.addLayout(Buttons(CloseButton(self.d)))
return bool(self.d.exec_())
def get_noise(self):
text = self.load_noise.text()
return ''.join(text.split()).lower()
def on_edit(self):
s = self.get_noise()
b = self.is_noise(s)
if b:
self.noise_seed = s[1:-3]
self.user_input = True
self.next_button.setEnabled(b)
def code_hashid(self, txt):
x = to_bytes(txt, 'utf8')
hash = sha256(x).hexdigest()
return hash[-3:].upper()
def is_noise(self, txt):
if (len(txt) >= 34):
try:
int(txt, 16)
except:
self.user_input = False
return False
else:
id = self.code_hashid(txt[:-3])
if (txt[-3:].upper() == id.upper()):
self.code_id = id
self.user_input = True
return True
else:
return False
else:
if (len(txt)>0 and txt[0]=='0'):
self.d.show_message(''.join(["<b>",_("Warning: "), "</b>", _("Revealers starting with 0 had a vulnerability and are not supported.")]))
self.user_input = False
return False
def make_digital(self, dialog):
self.make_rawnoise(True)
self.bdone(dialog)
self.d.close()
def bcrypt(self, dialog):
self.rawnoise = False
dialog.show_message(''.join([_("{} encrypted for Revealer {}_{} saved as PNG and PDF at:").format(self.was, self.version, self.code_id),
"<br/>","<b>", self.base_dir+ self.filename+self.version+"_"+self.code_id,"</b>"]))
dialog.close()
def ext_warning(self, dialog):
dialog.show_message(''.join(["<b>",_("Warning: "), "</b>", _("your seed extension will not be included in the encrypted backup.")]))
dialog.close()
def bdone(self, dialog):
dialog.show_message(''.join([_("Digital Revealer ({}_{}) saved as PNG and PDF at:").format(self.version, self.code_id),
"<br/>","<b>", self.base_dir + 'revealer_' +self.version + '_'+ self.code_id, '</b>']))
def customtxt_limits(self):
txt = self.text.text()
self.max_chars.setVisible(False)
self.char_count.setText("("+str(len(txt))+"/216)")
if len(txt)>0:
self.ctext.setEnabled(True)
if len(txt) > 216:
self.text.setPlainText(self.text.toPlainText()[:216])
self.max_chars.setVisible(True)
def t(self):
self.txt = self.text.text()
self.seed_img(is_seed=False)
def cypherseed_dialog(self, window):
d = WindowModalDialog(window, "Revealer")
d.setMinimumWidth(420)
self.c_dialog = d
self.vbox = QVBoxLayout(d)
self.vbox.addSpacing(21)
logo = QLabel()
self.vbox.addWidget(logo)
logo.setPixmap(QPixmap(':icons/revealer.png'))
logo.setAlignment(Qt.AlignCenter)
self.vbox.addSpacing(42)
grid = QGridLayout()
self.vbox.addLayout(grid)
cprint = QPushButton(_("Generate encrypted seed backup"))
cprint.clicked.connect(partial(self.seed_img, True))
self.vbox.addWidget(cprint)
self.vbox.addSpacing(14)
self.vbox.addWidget(WWLabel(_("OR type any secret below:")))
self.text = ScanQRTextEdit()
self.text.setTabChangesFocus(True)
self.text.setMaximumHeight(70)
self.text.textChanged.connect(self.customtxt_limits)
self.vbox.addWidget(self.text)
self.char_count = WWLabel("")
self.char_count.setAlignment(Qt.AlignRight)
self.vbox.addWidget(self.char_count)
self.max_chars = WWLabel("<font color='red'>" + _("This version supports a maximum of 216 characters.")+"</font>")
self.vbox.addWidget(self.max_chars)
self.max_chars.setVisible(False)
self.ctext = QPushButton(_("Generate custom secret encrypted backup"))
self.ctext.clicked.connect(self.t)
self.vbox.addWidget(self.ctext)
self.ctext.setEnabled(False)
self.vbox.addSpacing(11)
self.vbox.addWidget(
QLabel(''.join(["<b>" + _("WARNING") + "</b>: " + _("Revealer is a one-time-pad and should be used only once."), '<br/>',
_("Multiple secrets encrypted for the same Revealer can be attacked."), '<br/>',
])))
self.vbox.addSpacing(11)
self.vbox.addSpacing(21)
self.vbox.addLayout(Buttons(CloseButton(d)))
return bool(d.exec_())
def update_wallet_name (self, name):
self.wallet_name = str(name)
self.base_name = self.base_dir + self.wallet_name
def seed_img(self, is_seed = True):
if not self.cseed and self.txt == False:
return
if is_seed:
txt = self.cseed
else:
txt = self.txt.upper()
img = QImage(self.size[0],self.size[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.white)
painter = QPainter()
painter.begin(bitmap)
QFontDatabase.addApplicationFont(os.path.join(os.path.dirname(__file__), 'SourceSansPro-Bold.otf') )
if len(txt) < 102 :
fontsize = 15
linespace = 15
max_letters = 17
max_lines = 6
max_words = 3
else:
fontsize = 12
linespace = 10
max_letters = 23
max_lines = 9
max_words = int(max_letters/4)
font = QFont('Source Sans Pro', fontsize, QFont.Bold)
font.setLetterSpacing(QFont.PercentageSpacing, 100)
font.setPixelSize(fontsize)
painter.setFont(font)
seed_array = txt.split(' ')
for n in range(max_lines):
nwords = max_words
temp_seed = seed_array[:nwords]
while len(' '.join(map(str, temp_seed))) > max_letters:
nwords = nwords - 1
temp_seed = seed_array[:nwords]
painter.drawText(QRect(0, linespace*n , self.size[0], self.size[1]), Qt.AlignHCenter, ' '.join(map(str, temp_seed)))
del seed_array[:nwords]
painter.end()
img = bitmap.toImage()
if (self.rawnoise == False):
self.make_rawnoise()
self.make_cypherseed(img, self.rawnoise, False, is_seed)
return img
def make_rawnoise(self, create_revealer=False):
w = self.size[0]
h = self.size[1]
rawnoise = QImage(w, h, QImage.Format_Mono)
if(self.noise_seed == False):
self.noise_seed = random.SystemRandom().getrandbits(128)
self.hex_noise = format(self.noise_seed, '032x')
self.hex_noise = self.version + str(self.hex_noise)
if (self.user_input == True):
self.noise_seed = int(self.noise_seed, 16)
self.hex_noise = self.version + str(format(self.noise_seed, '032x'))
self.code_id = self.code_hashid(self.hex_noise)
self.hex_noise = ' '.join(self.hex_noise[i:i+4] for i in range(0,len(self.hex_noise),4))
entropy = binascii.unhexlify(str(format(self.noise_seed, '032x')))
code_id = binascii.unhexlify(self.version + self.code_id)
drbg = DRBG(entropy + code_id)
noise_array=bin(int.from_bytes(drbg.generate(1929), 'big'))[2:]
i=0
for x in range(w):
for y in range(h):
rawnoise.setPixel(x,y,int(noise_array[i]))
i+=1
self.rawnoise = rawnoise
if create_revealer==True:
self.make_revealer()
self.noise_seed = False
def make_calnoise(self):
random.seed(self.calibration_noise)
w = self.size[0]
h = self.size[1]
rawnoise = QImage(w, h, QImage.Format_Mono)
for x in range(w):
for y in range(h):
rawnoise.setPixel(x,y,random.randint(0, 1))
self.calnoise = self.pixelcode_2x2(rawnoise)
def make_revealer(self):
revealer = self.pixelcode_2x2(self.rawnoise)
revealer.invertPixels()
revealer = QBitmap.fromImage(revealer)
revealer = revealer.scaled(self.f_size, Qt.KeepAspectRatio)
revealer = self.overlay_marks(revealer)
self.filename = 'Revealer - '
revealer.save(self.base_dir + self.filename + self.version+'_'+self.code_id + '.png')
self.toPdf(QImage(revealer))
QDesktopServices.openUrl(QUrl.fromLocalFile(os.path.abspath(self.base_dir + self.filename + self.version+'_'+ self.code_id + '.pdf')))
def make_cypherseed(self, img, rawnoise, calibration=False, is_seed = True):
img = img.convertToFormat(QImage.Format_Mono)
p = QPainter()
p.begin(img)
p.setCompositionMode(26) #xor
p.drawImage(0, 0, rawnoise)
p.end()
cypherseed = self.pixelcode_2x2(img)
cypherseed = QBitmap.fromImage(cypherseed)
cypherseed = cypherseed.scaled(self.f_size, Qt.KeepAspectRatio)
cypherseed = self.overlay_marks(cypherseed, True, calibration)
if not is_seed:
self.filename = _('custom_secret')+'_'
self.was = _('Custom secret')
else:
self.filename = self.wallet_name+'_'+ _('seed')+'_'
self.was = self.wallet_name +' ' + _('seed')
if self.has_extension:
self.ext_warning(self.c_dialog)
if not calibration:
self.toPdf(QImage(cypherseed))
QDesktopServices.openUrl (QUrl.fromLocalFile(os.path.abspath(self.base_dir+self.filename+self.version+'_'+self.code_id+'.pdf')))
cypherseed.save(self.base_dir + self.filename +self.version + '_'+ self.code_id + '.png')
self.bcrypt(self.c_dialog)
return cypherseed
def calibration(self):
img = QImage(self.size[0],self.size[1], QImage.Format_Mono)
bitmap = QBitmap.fromImage(img, Qt.MonoOnly)
bitmap.fill(Qt.black)
self.make_calnoise()
img = self.overlay_marks(self.calnoise.scaledToHeight(self.f_size.height()), False, True)
self.calibration_pdf(img)
QDesktopServices.openUrl (QUrl.fromLocalFile(os.path.abspath(self.base_dir+_('calibration')+'.pdf')))
return img
def toPdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.base_dir+self.filename+self.version + '_'+self.code_id+'.pdf')
printer.setPageMargins(0,0,0,0,6)
painter = QPainter()
painter.begin(printer)
delta_h = round(image.width()/self.abstand_v)
delta_v = round(image.height()/self.abstand_h)
size_h = 2028+((int(self.calibration_h)*2028/(2028-(delta_h*2)+int(self.calibration_h)))/2)
size_v = 1284+((int(self.calibration_v)*1284/(1284-(delta_v*2)+int(self.calibration_v)))/2)
image = image.scaled(size_h, size_v)
painter.drawImage(553,533, image)
wpath = QPainterPath()
wpath.addRoundedRect(QRectF(553,533, size_h, size_v), 19, 19)
painter.setPen(QPen(Qt.black, 1))
painter.drawPath(wpath)
painter.end()
def calibration_pdf(self, image):
printer = QPrinter()
printer.setPaperSize(QSizeF(210, 297), QPrinter.Millimeter)
printer.setResolution(600)
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(self.base_dir+_('calibration')+'.pdf')
printer.setPageMargins(0,0,0,0,6)
painter = QPainter()
painter.begin(printer)
painter.drawImage(553,533, image)
font = QFont('Source Sans Pro', 10, QFont.Bold)
painter.setFont(font)
painter.drawText(254,277, _("Calibration sheet"))
font = QFont('Source Sans Pro', 7, QFont.Bold)
painter.setFont(font)
painter.drawText(600,2077, _("Instructions:"))
font = QFont('Source Sans Pro', 7, QFont.Normal)
painter.setFont(font)
painter.drawText(700, 2177, _("1. Place this paper on a flat and well iluminated surface."))
painter.drawText(700, 2277, _("2. Align your Revealer borderlines to the dashed lines on the top and left."))
painter.drawText(700, 2377, _("3. Press slightly the Revealer against the paper and read the numbers that best "
"match on the opposite sides. "))
painter.drawText(700, 2477, _("4. Type the numbers in the software"))
painter.end()
def pixelcode_2x2(self, img):
result = QImage(img.width()*2, img.height()*2, QImage.Format_ARGB32 )
white = qRgba(255,255,255,0)
black = qRgba(0,0,0,255)
for x in range(img.width()):
for y in range(img.height()):
c = img.pixel(QPoint(x,y))
colors = QColor(c).getRgbF()
if colors[0]:
result.setPixel(x*2+1,y*2+1, black)
result.setPixel(x*2,y*2+1, white)
result.setPixel(x*2+1,y*2, white)
result.setPixel(x*2, y*2, black)
else:
result.setPixel(x*2+1,y*2+1, white)
result.setPixel(x*2,y*2+1, black)
result.setPixel(x*2+1,y*2, black)
result.setPixel(x*2, y*2, white)
return result
def overlay_marks(self, img, is_cseed=False, calibration_sheet=False):
border_color = Qt.white
base_img = QImage(self.f_size.width(),self.f_size.height(), QImage.Format_ARGB32)
base_img.fill(border_color)
img = QImage(img)
painter = QPainter()
painter.begin(base_img)
total_distance_h = round(base_img.width() / self.abstand_v)
dist_v = round(total_distance_h) / 2
dist_h = round(total_distance_h) / 2
img = img.scaledToWidth(base_img.width() - (2 * (total_distance_h)))
painter.drawImage(total_distance_h,
total_distance_h,
img)
#frame around image
pen = QPen(Qt.black, 2)
painter.setPen(pen)
#horz
painter.drawLine(0, total_distance_h, base_img.width(), total_distance_h)
painter.drawLine(0, base_img.height()-(total_distance_h), base_img.width(), base_img.height()-(total_distance_h))
#vert
painter.drawLine(total_distance_h, 0, total_distance_h, base_img.height())
painter.drawLine(base_img.width()-(total_distance_h), 0, base_img.width()-(total_distance_h), base_img.height())
#border around img
border_thick = 6
Rpath = QPainterPath()
Rpath.addRect(QRectF((total_distance_h)+(border_thick/2),
(total_distance_h)+(border_thick/2),
base_img.width()-((total_distance_h)*2)-((border_thick)-1),
(base_img.height()-((total_distance_h))*2)-((border_thick)-1)))
pen = QPen(Qt.black, border_thick)
pen.setJoinStyle (Qt.MiterJoin)
painter.setPen(pen)
painter.drawPath(Rpath)
Bpath = QPainterPath()
Bpath.addRect(QRectF((total_distance_h), (total_distance_h),
base_img.width()-((total_distance_h)*2), (base_img.height()-((total_distance_h))*2)))
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawPath(Bpath)
pen = QPen(Qt.black, 1)
painter.setPen(pen)
painter.drawLine(0, base_img.height()/2, total_distance_h, base_img.height()/2)
painter.drawLine(base_img.width()/2, 0, base_img.width()/2, total_distance_h)
painter.drawLine(base_img.width()-total_distance_h, base_img.height()/2, base_img.width(), base_img.height()/2)
painter.drawLine(base_img.width()/2, base_img.height(), base_img.width()/2, base_img.height() - total_distance_h)
#print code
f_size = 37
QFontDatabase.addApplicationFont(os.path.join(os.path.dirname(__file__), 'DejaVuSansMono-Bold.ttf'))
font = QFont("DejaVu Sans Mono", f_size-11, QFont.Bold)
font.setPixelSize(35)
painter.setFont(font)
if not calibration_sheet:
if is_cseed: #its a secret
painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
painter.drawImage(((total_distance_h))+11, ((total_distance_h))+11,
QImage(':icons/electrumb.png').scaledToWidth(2.1*(total_distance_h), Qt.SmoothTransformation))
painter.setPen(QPen(Qt.white, border_thick*8))
painter.drawLine(base_img.width()-((total_distance_h))-(border_thick*8)/2-(border_thick/2)-2,
(base_img.height()-((total_distance_h)))-((border_thick*8)/2)-(border_thick/2)-2,
base_img.width()-((total_distance_h))-(border_thick*8)/2-(border_thick/2)-2 - 77,
(base_img.height()-((total_distance_h)))-((border_thick*8)/2)-(border_thick/2)-2)
painter.setPen(QColor(0,0,0,255))
painter.drawText(QRect(0, base_img.height()-107, base_img.width()-total_distance_h - border_thick - 11,
base_img.height()-total_distance_h - border_thick), Qt.AlignRight, self.version + '_'+self.code_id)
painter.end()
else: # revealer
painter.setPen(QPen(border_color, 17))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
painter.setPen(QPen(Qt.black, 2))
painter.drawLine(0, dist_v, base_img.width(), dist_v)
painter.drawLine(dist_h, 0, dist_h, base_img.height())
painter.drawLine(0, base_img.height()-dist_v, base_img.width(), base_img.height()-(dist_v))
painter.drawLine(base_img.width()-(dist_h), 0, base_img.width()-(dist_h), base_img.height())
logo = QImage(':icons/revealer_c.png').scaledToWidth(1.3*(total_distance_h))
painter.drawImage((total_distance_h)+ (border_thick), ((total_distance_h))+ (border_thick), logo, Qt.SmoothTransformation)
#frame around logo
painter.setPen(QPen(Qt.black, border_thick))
painter.drawLine(total_distance_h+border_thick, total_distance_h+logo.height()+3*(border_thick/2),
total_distance_h+logo.width()+border_thick, total_distance_h+logo.height()+3*(border_thick/2))
painter.drawLine(logo.width()+total_distance_h+3*(border_thick/2), total_distance_h+(border_thick),
total_distance_h+logo.width()+3*(border_thick/2), total_distance_h+logo.height()+(border_thick))
#frame around code/qr
qr_size = 179
painter.drawLine((base_img.width()-((total_distance_h))-(border_thick/2)-2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2,
(base_img.width()/2+(total_distance_h/2)-border_thick-(border_thick*8)/2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2)
painter.drawLine((base_img.width()/2+(total_distance_h/2)-border_thick-(border_thick*8)/2)-qr_size,
(base_img.height()-((total_distance_h)))-((border_thick*8))-(border_thick/2)-2,
base_img.width()/2 + (total_distance_h/2)-border_thick-(border_thick*8)/2-qr_size,
((base_img.height()-((total_distance_h)))-(border_thick/2)-2))
painter.setPen(QPen(Qt.white, border_thick * 8))
painter.drawLine(
base_img.width() - ((total_distance_h)) - (border_thick * 8) / 2 - (border_thick / 2) - 2,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8) / 2) - (border_thick / 2) - 2,
base_img.width() / 2 + (total_distance_h / 2) - border_thick - qr_size,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8) / 2) - (border_thick / 2) - 2)
painter.setPen(QColor(0,0,0,255))
painter.drawText(QRect(((base_img.width()/2) +21)-qr_size, base_img.height()-107,
base_img.width()-total_distance_h - border_thick -93,
base_img.height()-total_distance_h - border_thick), Qt.AlignLeft, self.hex_noise.upper())
painter.drawText(QRect(0, base_img.height()-107, base_img.width()-total_distance_h - border_thick -3 -qr_size,
base_img.height()-total_distance_h - border_thick), Qt.AlignRight, self.code_id)
# draw qr code
qr_qt = self.paintQR(self.hex_noise.upper() +self.code_id)
target = QRectF(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
qr_size, qr_size )
painter.drawImage(target, qr_qt)
painter.setPen(QPen(Qt.black, 4))
painter.drawLine(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
base_img.width() - 65 - qr_size,
(base_img.height() - ((total_distance_h))) - ((border_thick * 8)) - (border_thick / 2) - 4
)
painter.drawLine(base_img.width()-65-qr_size,
base_img.height()-65-qr_size,
base_img.width() - 65,
base_img.height()-65-qr_size
)
painter.end()
else: # calibration only
painter.end()
cal_img = QImage(self.f_size.width() + 100, self.f_size.height() + 100,
QImage.Format_ARGB32)
cal_img.fill(Qt.white)
cal_painter = QPainter()
cal_painter.begin(cal_img)
cal_painter.drawImage(0,0, base_img)
#black lines in the middle of border top left only
cal_painter.setPen(QPen(Qt.black, 1, Qt.DashDotDotLine))
cal_painter.drawLine(0, dist_v, base_img.width(), dist_v)
cal_painter.drawLine(dist_h, 0, dist_h, base_img.height())
pen = QPen(Qt.black, 2, Qt.DashDotDotLine)
cal_painter.setPen(pen)
n=15
cal_painter.setFont(QFont("DejaVu Sans Mono", 21, QFont.Bold))
for x in range(-n,n):
#lines on bottom (vertical calibration)
cal_painter.drawLine((((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)-13,
x+2+base_img.height()-(dist_v),
(((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)+13,
x+2+base_img.height()-(dist_v))
num_pos = 9
if x > 9 : num_pos = 17
if x < 0 : num_pos = 20
if x < -9: num_pos = 27
cal_painter.drawText((((base_img.width())/(n*2)) *(x))+ (base_img.width()/2)-num_pos,
50+base_img.height()-(dist_v),
str(x))
#lines on the right (horizontal calibrations)
cal_painter.drawLine(x+2+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/n)+(base_img.height()/2)-13,
x+2+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/n)+(base_img.height()/2)+13)
cal_painter.drawText(30+(base_img.width()-(dist_h)),
((base_img.height()/(2*n)) *(x))+ (base_img.height()/2)+13, str(x))
cal_painter.end()
base_img = cal_img
return base_img
def paintQR(self, data):
if not data:
return
qr = qrcode.QRCode()
qr.add_data(data)
matrix = qr.get_matrix()
k = len(matrix)
border_color = Qt.white
base_img = QImage(k * 5, k * 5, QImage.Format_ARGB32)
base_img.fill(border_color)
qrpainter = QPainter()
qrpainter.begin(base_img)
boxsize = 5
size = k * boxsize
left = (base_img.width() - size)/2
top = (base_img.height() - size)/2
qrpainter.setBrush(Qt.black)
qrpainter.setPen(Qt.black)
for r in range(k):
for c in range(k):
if matrix[r][c]:
qrpainter.drawRect(left+c*boxsize, top+r*boxsize, boxsize - 1, boxsize - 1)
qrpainter.end()
return base_img
def calibration_dialog(self, window):
d = WindowModalDialog(window, _("Revealer - Printer calibration settings"))
d.setMinimumSize(100, 200)
vbox = QVBoxLayout(d)
vbox.addWidget(QLabel(''.join(["<br/>", _("If you have an old printer, or want optimal precision"),"<br/>",
_("print the calibration pdf and follow the instructions "), "<br/>","<br/>",
])))
self.calibration_h = self.config.get('calibration_h')
self.calibration_v = self.config.get('calibration_v')
cprint = QPushButton(_("Open calibration pdf"))
cprint.clicked.connect(self.calibration)
vbox.addWidget(cprint)
vbox.addWidget(QLabel(_('Calibration values:')))
grid = QGridLayout()
vbox.addLayout(grid)
grid.addWidget(QLabel(_('Right side')), 0, 0)
horizontal = QLineEdit()
horizontal.setText(str(self.calibration_h))
grid.addWidget(horizontal, 0, 1)
grid.addWidget(QLabel(_('Bottom')), 1, 0)
vertical = QLineEdit()
vertical.setText(str(self.calibration_v))
grid.addWidget(vertical, 1, 1)
vbox.addStretch()
vbox.addSpacing(13)
vbox.addLayout(Buttons(CloseButton(d), OkButton(d)))
if not d.exec_():
return
self.calibration_h = int(Decimal(horizontal.text()))
self.config.set_key('calibration_h', self.calibration_h)
self.calibration_v = int(Decimal(vertical.text()))
self.config.set_key('calibration_v', self.calibration_v)