Bugfixes

CHANGELOG.md

@@ -1,3 +1,12 @@
+# Version 23.09.1 - November 18, 2023
+This release contain bugfixes:
+
+Encrypted Mnemonic QR codes would fail to decrypt if PBKDF2 iterations settings was changed to non multiple of 10,000.
+
+QR code transcription helpers that highlight regions could crash on edges of some QR code sizes.
+
+Address navigation "previous" menu option wouldn't show correct number.
+
 # Version 23.09.0 - September 12, 2023
 After a long year, new features are finally coming out of beta and making their way into a stable release. Also @jreesun appointed @odudex as the new lead maintainer of the project.
 

docs/getting-started/settings.en.md

@@ -27,6 +27,8 @@ When you enter a encryption key it is not directly used to encrypt your data. As
 
 If you increase this value it will make the encryption harder, at the cost of taking longer to encrypt and decrypt your mnemonics
 
+Values must be multiple of 10,000. This was done to save data space on QR codes, also, intermediary values wouldn't significantly affect safety or computation time.
+
 <div style="clear: both"></div>
 
 #### Encryption Mode

i18n/translations/de-DE.json

@@ -225,6 +225,7 @@
     "Use camera's entropy to create a new mnemonic": "Verwende die Entropie der Kamera, um eine neue Mnemonic zu erstellen",
     "Used: ": "Belegt: ",
     "Value %s out of range: [%s, %s]": "Wert %S außerhalb  des Bereichs: [ %s, %s]",
+    "Value must be multiple of %s": "Der Wert muss ein Vielfaches von %s sein",
     "Via Camera": "Via Kamera",
     "Via D20": "Via D20",
     "Via D6": "Via D6",

i18n/translations/es-MX.json

@@ -225,6 +225,7 @@
     "Use camera's entropy to create a new mnemonic": "Use la entropía de la cámara para crear una nueva mnemónica",
     "Used: ": "Usado: ",
     "Value %s out of range: [%s, %s]": "Valor %s fuera del rango: [ %s, %s]",
+    "Value must be multiple of %s": "El valor debe ser múltiple de %s",
     "Via Camera": "Vía cámara",
     "Via D20": "Via D20",
     "Via D6": "Via D6",

i18n/translations/fr-FR.json

@@ -225,6 +225,7 @@
     "Use camera's entropy to create a new mnemonic": "Utilisez l'entropie de la caméra pour créer un nouveau mnémonique",
     "Used: ": "Utilisé: ",
     "Value %s out of range: [%s, %s]": "Valeur% s hors de portée: [% s,% s]",
+    "Value must be multiple of %s": "La valeur doit être multiple de% s",
     "Via Camera": "Par caméra",
     "Via D20": "Via D20",
     "Via D6": "Via D6",

i18n/translations/nl-NL.json

@@ -225,6 +225,7 @@
     "Use camera's entropy to create a new mnemonic": "Gebruik de camera als entropie voor het aanmaken van een nieuwe geheugensteun",
     "Used: ": "Gebruikt: ",
     "Value %s out of range: [%s, %s]": "Waarde %s is buiten bereik: [%s, %s]",
+    "Value must be multiple of %s": "Waarde moet meerdere van %s zijn",
     "Via Camera": "Via camera",
     "Via D20": "Via D20",
     "Via D6": "Via D6",

i18n/translations/pt-BR.json

@@ -225,6 +225,7 @@
     "Use camera's entropy to create a new mnemonic": "Use a entropia da câmera para criar um novo mnemônico",
     "Used: ": "Usado: ",
     "Value %s out of range: [%s, %s]": "Valor %s fora do alcance: [ %s, %s]",
+    "Value must be multiple of %s": "O valor deve ser múltiplo de %s",
     "Via Camera": "Pela Câmera",
     "Via D20": "Via D20",
     "Via D6": "Via D6",

i18n/translations/vi-VN.json

@@ -225,6 +225,7 @@
     "Use camera's entropy to create a new mnemonic": "Sử dụng entropy của máy ảnh để tạo ra một bản ghi âm mới",
     "Used: ": "Đã sử dụng: ",
     "Value %s out of range: [%s, %s]": "Giá trị %s ngoài phạm vi: [ %s, %s]",
+    "Value must be multiple of %s": "Giá trị phải là bội của %s",
     "Via Camera": "Qua máy ảnh",
     "Via D20": "Qua D20",
     "Via D6": "Qua D6",

pyproject.toml

@@ -22,7 +22,7 @@
 
 [tool.poetry]
 name = "krux"
-version = "23.09.0"
+version = "23.09.1"
 description = "Open-source signing device firmware for Bitcoin"
 authors = ["Jeff S <[email protected]>"]
 

src/krux/encryption.py

@@ -46,6 +46,8 @@
     "AES-CBC": PBKDF2_HMAC_CBC,
 }
 
+QR_CODE_ITER_MULTIPLE = 10000
+
 
 class AESCipher:
     """Helper for AES encrypt/decrypt"""
@@ -214,12 +216,22 @@ def create(self, key, mnemonic_id, mnemonic, i_vector=None):
         """Joins necessary data and creates encrypted mnemonic QR codes"""
         name_lenght = len(mnemonic_id.encode())
         version = VERSION_NUMBER[Settings().encryption.version]
-        key_iterations = Settings().encryption.pbkdf2_iterations
+        ten_k_iterations = Settings().encryption.pbkdf2_iterations
+
+        # Divide iterations by a Multiple(10,000) to save space
+        ten_k_iterations //= QR_CODE_ITER_MULTIPLE
+
+        # Add public data bytes
         qr_code_data = name_lenght.to_bytes(1, "big")
         qr_code_data += mnemonic_id.encode()
         qr_code_data += version.to_bytes(1, "big")
-        qr_code_data += (key_iterations // 10000).to_bytes(3, "big")
-        encryptor = AESCipher(key, mnemonic_id, Settings().encryption.pbkdf2_iterations)
+        qr_code_data += ten_k_iterations.to_bytes(3, "big")
+
+        # Restore the iterations value assuring is a multiple of 10,000
+        ten_k_iterations *= QR_CODE_ITER_MULTIPLE
+
+        # Encrypted data
+        encryptor = AESCipher(key, mnemonic_id, ten_k_iterations)
         mode = VERSION_MODE[Settings().encryption.version]
         words = mnemonic.split(" ")
         checksum_bits = 8 if len(words) == 24 else 4
@@ -231,7 +243,10 @@ def create(self, key, mnemonic_id, mnemonic, i_vector=None):
         bytes_to_encrypt += hashlib.sha256(bytes_to_encrypt).digest()[:16]
         base64_encrypted = encryptor.encrypt(bytes_to_encrypt, mode, i_vector)
         bytes_encrypted = base_decode(base64_encrypted, 64)
+
+        # Add encrypted data bytes
         qr_code_data += bytes_encrypted
+
         return qr_code_data
 
     def public_data(self, data):

src/krux/metadata.py

@@ -19,5 +19,5 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
-VERSION = "23.09.0"
+VERSION = "23.09.1"
 SIGNER_PUBKEY = "03339e883157e45891e61ca9df4cd3bb895ef32d475b8e793559ea10a36766689b"

src/krux/pages/addresses.py

@@ -94,7 +94,8 @@ def list_address_type(self, addr_type=0):
                 if num_checked + 1 > LIST_ADDRESS_QTD:
                     items.append(
                         (
-                            "%d..%d" % (num_checked - LIST_ADDRESS_QTD, num_checked),
+                            "%d..%d"
+                            % (num_checked - LIST_ADDRESS_QTD + 1, num_checked),
                             lambda: MENU_EXIT,
                         )
                     )

src/krux/pages/qr_view.py

@@ -111,24 +111,27 @@
         offset = (self.ctx.display.width() - qr_width) // 2
         for y in range(reg_height):  # vertical blocks loop
             for x in range(reg_width):  # horizontal blocks loop
-                xy_index = (reg_y + y + 1) * (size + 1)
-                xy_index += reg_x + x + 1
-                if code[xy_index] == "0":
-                    self.ctx.display.fill_rectangle(
-                        offset + (offset_x + x) * scale,
-                        offset + (offset_y + y) * scale,
-                        scale,
-                        scale,
-                        WHITE,
-                    )
-                else:
-                    self.ctx.display.fill_rectangle(
-                        offset + (offset_x + x) * scale,
-                        offset + (offset_y + y) * scale,
-                        scale,
-                        scale,
-                        BLACK,
-                    )
+                y_index = reg_y + y + 1
+                x_index = reg_x + x + 1
+                xy_index = y_index * (size + 1)
+                xy_index += x_index
+                if y_index < size and x_index < size:
+                    if code[xy_index] == "0":
+                        self.ctx.display.fill_rectangle(
+                            offset + (offset_x + x) * scale,
+                            offset + (offset_y + y) * scale,
+                            scale,
+                            scale,
+                            WHITE,
+                        )
+                    else:
+                        self.ctx.display.fill_rectangle(
+                            offset + (offset_x + x) * scale,
+                            offset + (offset_y + y) * scale,
+                            scale,
+                            scale,
+                            BLACK,
+                        )
 
     def _region_legend(self, row, column):
         region_char = chr(65 + row)
@@ -235,29 +238,38 @@
                 ),
             )
             line_offset = grid_pad * row * self.region_size
-            colunm_offset = grid_pad * column * self.region_size
+            column_offset = grid_pad * column * self.region_size
+            draw_limit = grid_offset + self.qr_size * grid_pad
             for i in range(self.region_size + 1):
-                x_position = grid_offset + colunm_offset
-                x_lenght = self.region_size * grid_pad + 1
-                display_transpose = x_position + x_lenght - self.ctx.display.width()
-                if display_transpose > 0:
-                    x_lenght -= display_transpose
+                x_position = grid_offset + column_offset
+                x_length = self.region_size * grid_pad + 1
+                transposed = x_position + x_length - draw_limit
+                if transposed > 0:
+                    x_length -= transposed
+                y_position = grid_offset + i * grid_pad + line_offset
+                if y_position > draw_limit:
+                    break
                 self.ctx.display.fill_rectangle(
                     x_position,
-                    grid_offset + i * grid_pad + line_offset,
-                    x_lenght,
+                    y_position,
+                    x_length,
                     grid_size,
                     theme.highlight_color,
                 )
             for i in range(self.region_size + 1):
-                x_position = grid_offset + i * grid_pad + colunm_offset
-                if x_position > self.ctx.display.width():
+                x_position = grid_offset + i * grid_pad + column_offset
+                if x_position > draw_limit:
                     break
+                y_position = grid_offset + line_offset
+                y_length = self.region_size * grid_pad + 1
+                transposed = y_position + y_length - draw_limit
+                if transposed > 0:
+                    y_length -= transposed
                 self.ctx.display.fill_rectangle(
                     x_position,
-                    grid_offset + line_offset,
+                    y_position,
                     grid_size,
-                    self.region_size * grid_pad + 1,
+                    y_length,
                     theme.highlight_color,
                 )
             self._region_legend(row, column)

src/krux/pages/settings_page.py

@@ -35,10 +35,11 @@
     BitcoinSettings,
     TouchSettings,
     EncoderSettings,
+    t,
 )
 from ..input import BUTTON_ENTER, BUTTON_PAGE, BUTTON_PAGE_PREV, BUTTON_TOUCH
-from ..krux_settings import t
 from ..sd_card import SDHandler
+from ..encryption import QR_CODE_ITER_MULTIPLE
 from ..display import FLASH_MSG_TIME
 from . import (
     Page,
@@ -334,7 +335,16 @@
 
         new_value = setting.numtype(new_value)
         if setting.value_range[0] <= new_value <= setting.value_range[1]:
-            setting.__set__(settings_namespace, new_value)
+            if (
+                setting.attr == "pbkdf2_iterations"
+                and (new_value % QR_CODE_ITER_MULTIPLE) != 0
+            ):
+                self.ctx.display.flash_text(
+                    t("Value must be multiple of %s") % QR_CODE_ITER_MULTIPLE,
+                    theme.error_color,
+                )
+            else:
+                setting.__set__(settings_namespace, new_value)
         else:
             self.ctx.display.flash_text(
                 t("Value %s out of range: [%s, %s]")