The Maix Cube now has its first official release. This affordable and compact cube-shaped device, equipped with a built-in battery, is an excellent choice for those seeking a discreet option.
Krux now runs cross-compiled (frozen) Python code instead of real-time compiled code. The Python real-time compiler and REPL have been disabled.
Beyond Native Segwit, users can now load Legacy, Nested Segwit, and Taproot script type wallets.
Users can now use custom account derivation indexes.
New workflow to load wallets, faster for default settings and with more options when custom settings are needed. Wallet's network, script type, single/multisig, and account can be changed during and after loading a wallet.
Generate, export, and load BIP85 child mnemonics.
Krux now has a tool to load a trusted wallet descriptor to view addresses without the need for private keys.
Scan and export PSBTs and wallet descriptors in the compact and efficient BBQr format.
Embit updated to 0.8.
The device will automatically shut down at a configurable time if left on.
Disable backup tools and hide private key data when a wallet is loaded.
Detect and warn the user if the PSBT path differs from the loaded wallet's path. This is useful for users who use multiple script types with the same key, ensuring they use the correct account when sending transactions.
Ensure you are signing for the correct multisig setup by inspecting PSBT's fingerprints if the wallet descriptor is not loaded. If the descriptor is loaded, verification is done by Krux.
The loaded key's fingerprint is now shown in the status bar.
Show the transaction's fee as a proportion of the transaction cost, warning if it is greater than 10%.
PSBT now displays an accurate estimation of the transaction’s feerate.
Adjust backlight intensity for better viewing and scanning from your Cube or M5stickV.
Hold the NEXT or PREVIOUS buttons when navigating among letters while typing text to fast forward or backward.
Add more display settings for Amigo to allow different display models to work properly.
The time to scan or display wallet addresses is now less than half compared to the previous version.
Krux will now sign PSBTs even if a fingerprint is not properly set on the coordinator. Krux will still warn the user to set it correctly or use Krux-exported public keys to set their coordinators.
Krux warns the user if it suspects there are patterns within the actual rolls
Better suited for large transactions, SD card signing is now more RAM efficient, allowing transactions with +100 inputs to be signed in less than a minute.
As required in BIP174, signed PSBT QR codes and SD card files now contain all the required data to verify the signatures without needing the original, unsigned PSBT.
Recent Yahboom K210 devices (ver:1.1) come with the GC2145 camera instead of the OV2640 (ver:1.0). Optimizations and features, such as anti-glare, have been added for the new camera.
Simulator can now run as M5stickV, Amigo, Dock, Yahboom, and Cube.
The SD file explorer now sorts files in ascending order, showing directories first.
Address explorer now shows receive and change address starting at index 0 instead of number 1.
Bugfixes, optimizations and code refactoring.
Option on tools to wipe the device, permanently removing settings and stored encrypted mnemonics by erasing every single bit of user's flash space.
When deleting an encrypted mnemonic from an SD card, Krux will now overwrite the memory area making it impossible to recover the previously stored data.
Create or load from a wallet output descriptor file on an SD card. The backup file format is compatible with most coordinators.
Sign messages from Sparrow and Specter, via QR code, also attesting a Bitcoin address belongs to you.
To enhance the reproducibility of firmware builds, random variables such as file write timestamps have been removed from the build process. As a result, builds from developers' computers, those built within GitHub Actions from published code, and those you compile locally are more likely to be identical and have the same hash checksum as the official and beta releases. This change ensures greater consistency and traceability across all builds.
Entropy quality estimators, like Shannon's entropy, were added to mnemonic generation through dice rolls and camera snapshot.
Button and touch presses are now detected by the application through IO interrupts. Meaning inputs events will be registered and handled even if they happened when other tasks were being executed by the processor, resulting in a better UX.
Option to restore the device's settings to its factory state.
Device's storage is now used more efficiently, data is stored less frequently, only in case a setting is changed from defaults.
The power management behavior for the Amigo device has been standardized. Previously, some devices would not wake up from shutdown or sleep mode. Now, these devices will fully shut down when the shutdown option is selected from the menu, and they will always power on when the power button is pressed for 1 second.
Icons, information text boxes, and rounded shapes are now present at the GUI.
To match the input options, export mnemonics as decimal, hexadecimal, or octal numbers. When loading from numbers, a new numbers confirmation screen was added.
QR codes rendering is faster and uses less RAM.
Some QR codes can be exported as images to SD card.
Optional screensaver to reduce pixels' burn-in and grab the attention of the user when the device is left powered on.
More receive and change addresses per page are shown on bigger screens.
Use the latest Embit release.
Now Krux PC simulator can also run in Maix Dock mode, mimicking appearance and characteristics of the most DIY Krux device.
The Yahboom Aimotion K210 module, a compact touchscreen device, now has its first official firmware release.
Users will be able to flash a single firmware and change display settings if their device was shipped with a display different from standard TFT.
Many other small fixes and optimizations under the hood.
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.
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.
Check battery status of M5stickV or Maix Amigo on top right of the screen.
Use camera as a source of entropy to quickly create a mnemonic.
Import and export a binary representation of your mnemonic, in a format popularized by Tiny Seed metal plates. BIP39 mnemonic words number, ranging from 1 to 2048 are punched in binary format on a rectangular grid. Krux will automatically convert a mnemonic to Tiny Seed format allowing to print or transcript it. You can also load a tiny seed toggling word bits on screen, or make use of machine vision capabilities of K210 chip to directly scan a Tiny Seed mnemonic backup stored on metal or paper.
Without needing tools, guides or dictionaries, import and export another metal plate backup format, where each of the four digits of the word's number is a sum of marked (punched) numbers 1,2,4 and 8.
Also available in some metal plate backup formats, you could load your mnemonic words from its decimal BIP39 word number (1-2048), now you can also load from its hexadecimal(0x1-0x800) or octal(01-04000) word number.
Conveniently store your mnemonics on device's internal flash memory or removable SD card, protecting them with encryption. It is now possible to export encrypted QR codes too.
Beyond verifying your wallet's receive addresses, you can now also list, export and print receive and change addresses.
SD cards can now be inserted and removed at any time, making it easier to use it for signing transactions, messages and storing encrypted mnemonics.
Different visualization modes which make it easier to transcript QR codes.
When signing a transaction, more information is presented, ensuring that the user sees all details before signing.
Check if the SD card is detected and explore its content.
Delete any stored encrypted mnemonic, on device's internal flash memory or SD card.
Quickly print a test QR code to check and optimize your printer setup.
Enter a text input to create, print or transcript a QR code that can be later used as an encryption key or as a passphrase.
Choose your color theme according to your preference.
More mnemonic export formats and tools to create and print generic QR codes to be used as passphrases or encryption keys. You can also export QR codes to gcode files and save them in SD cards, allowing you to machine them GRBL compatible CNCs without the need of computers and CAD tools.
Choose where you want to store your settings, on internal flash memory or SD card.
If your device has touchscreen you can change the touch detection threshold.
Dutch translations were added.
Small changes to optimize user experience.
Small bugfixes, optimizations and code refactoring, targeting better compatibility with coordinator softwares, faster boot and better RAM management.
This patch release reverts the zpub QR code format, once again including key origin derivation info which is necessary for BlueWallet to use when preparing PSBTs for signing with single-key wallets.
It is recommended to update to this version if you are using a single-key "Imported Watch-only" wallet with BlueWallet and are seeing a "cannot sign" error message when trying to send an outgoing transaction. If so, please do the following:
- Upgrade Krux to this new release
- Delete the affected wallet in BlueWallet (funds are safu as long as you have your mnemonic)
- Create a new wallet in BlueWallet by importing from the new zpub QR code that Krux now displays.
- Open the wallet in BlueWallet and pull down to fetch the old wallet's transaction history.
- Create a new outgoing transaction and scan the QR code with Krux.
- Krux should display the tx information and allow you to sign.
- Display the signed QR back to BlueWallet.
- Broadcast!
This release is to fix a bug that would have prevented Amigos from performing airgapped upgrades to the next release.
This latest version of Krux is brought to you by @odudex, who tirelessly worked for months to get Krux working on three new devices: the Maix Amigo, Maix Bit, and Maix Dock. Thank you for all your hard work!
Many other improvements to Krux were made along the way which will be listed below.
Enjoy!
For instructions on how to install this release, please follow the Getting Started guide on https://selfcustody.github.io/krux/.
To perform an airgapped upgrade (with a microSD card) from a previous signed release, please follow the directions here: https://selfcustody.github.io/krux/getting-started/installing/#upgrade-via-microsd-card
Krux now supports three new devices: Maix Amigo, Maix Bit, and Maix Dock. The Amigo is an all-in-one device with a touchscreen display, while the Dock and Bit are more DIY-focused kits where some assembly is required.
Along with being usable on multiple devices now, Krux also has native touchscreen support and many refinements to its UI to make better use of the screen space it has. More work has gone into improving UX including the ability to escape out of the mnemonic loading or creation screens at any point.
Krux now includes translations in the firmware due to using a more space-efficient font format. With this change, the rendering issues with Vietnamese characters have also been fixed. A new Portuguese translation has been added.
The Krux Simulator, which lets you simulate on your PC what it would be like to run Krux on a device, was updated to support the Amigo. There is also now a PC option if you want to run Krux "natively" on your PC (NOTE: This is a toy for fun and is not recommended for real usage).
Support for scanning SeedSigner’s newer "CompactSeedQR" QR codes
Support has been added for BIP39 passphrases. After loading a mnemonic, you will be asked if you want to "Add a passphrase?" to it.
You can now save a signed PSBT to microSD which should help users having trouble getting their webcams to read the tiny QR codes on the M5StickV. Furthermore, Krux supports loading a PSBT from microSD as well if you want to forgo QR codes entirely.
The flow for entering rolls has been streamlined to allow more rapid input, with your string of rolls now being visible along the top of the screen as you go. We also introduced a change to how the D6 roll string is built, no longer including "-" between rolls prior to hashing to have consistency with ColdCard and SeedSigner.
Note: We continue to use a "-" separator between D20 rolls to avoid reducing state space due to collisions (e.g., rolling 1-17 and 11-7 would result in the same 117 string without a separator, and would thus have the same hash)
All devices, even the M5StickV, support moving backward in the UI now. The left-side power button on the M5StickV no longer does one-press resets and instead acts as a third input button. Note: You can still shutdown the device by holding it down for 5 seconds.
Support for using a rotary encoder as the previous and next buttons has also been added. Check out @odudex’s open source case design with instructions on how to use one with the Dock: https://github.com/odudex/DockEncoderCase
Just to note, he also has a case design for the Bit:
https://github.com/odudex/MaixBitCase
The Github Pages site has been updated with new documentation and screenshots for the Amigo.
A new internationalization (i18n) framework has been added by @qlrd that will allow the website to be easily translated to other languages so we can eventually have documentation for every language that Krux supports!
@qlrd is also working on a graphical installer we hope to start making use of in the future when it’s ready. Keep tabs on it here: https://github.com/qlrd/krux-installer
Finally, after much TODO, the first official release of Krux is out!
Krux will be following a calendar version release schedule similar to Ubuntu, hence the first release is version (20)22.03.0. If any glaring security issues or important bugfixes come up, they will make their way into point releases such as 22.03.1, 22.03.2, etc. All new work will go toward major releases which will get a new year and month combo.
Thank you to everyone who contributed their time and effort toward this release. It's been very cool to see people take an interest in the project! Also, a special thank you is due to @stepansnigirev for creating the embit library that Krux leans so heavily on.
For instructions on how to install this release, please follow the Getting Started guide on https://selfcustody.github.io/krux/.