Banana Split
Split secrets into QR-code shards using Shamir's Secret Sharing
新版本 0.8.3
• FOSS camera scanner for F-Droid — no more Google ML Kit dependency
• Fix camera activating at app launch instead of only on the Restore tab
• Move fastlane metadata to repo root
• Fix camera activating at app launch instead of only on the Restore tab
• Move fastlane metadata to repo root
Banana Split uses Shamir's Secret Sharing to split secrets into QR-code shards. Any majority of shards can reconstruct the secret — fewer reveal nothing.
How it works
1. Enter your secret (e.g., a seed phrase, private key, password).
2. Choose how many shards to create and how many are required to reconstruct.
3. Use the auto-generated passphrase or enter your own.
4. Banana Split encrypts the secret with the passphrase, then splits the ciphertext into N QR codes using Shamir's scheme.
5. Print or save the QR codes. Write the passphrase by hand on every sheet.
To reconstruct: scan a majority of QR code shards, enter the passphrase, and your secret is restored.
Features
• Offline — all cryptography happens on-device, no server communication
• Save shards as PNGs or PDF with full Unicode font support
• Camera and gallery QR scanning with multi-file import
• Custom or auto-generated passphrases
• User-selectable quorum (how many shards needed)
• 7 languages: English, Russian, Turkish, Belarusian, Georgian, Ukrainian, Polish
• Cross-platform shard compatibility with the Banana Split web app
Security
Encryption: scrypt key derivation + NaCl secretbox (XSalsa20-Poly1305).
Splitting: Shamir's Secret Sharing over GF(256).
No data collection, no analytics, no trackers.
Web App
Also available as a web app — no installation needed: https://nfcarchiver.com/banana/
Shards created in the app and web version are fully compatible.
Open Source
This app is a fork of banana_split by Parity Technologies, licensed under GPLv3.
Source code: https://github.com/mezinster/banana_split
How it works
1. Enter your secret (e.g., a seed phrase, private key, password).
2. Choose how many shards to create and how many are required to reconstruct.
3. Use the auto-generated passphrase or enter your own.
4. Banana Split encrypts the secret with the passphrase, then splits the ciphertext into N QR codes using Shamir's scheme.
5. Print or save the QR codes. Write the passphrase by hand on every sheet.
To reconstruct: scan a majority of QR code shards, enter the passphrase, and your secret is restored.
Features
• Offline — all cryptography happens on-device, no server communication
• Save shards as PNGs or PDF with full Unicode font support
• Camera and gallery QR scanning with multi-file import
• Custom or auto-generated passphrases
• User-selectable quorum (how many shards needed)
• 7 languages: English, Russian, Turkish, Belarusian, Georgian, Ukrainian, Polish
• Cross-platform shard compatibility with the Banana Split web app
Security
Encryption: scrypt key derivation + NaCl secretbox (XSalsa20-Poly1305).
Splitting: Shamir's Secret Sharing over GF(256).
No data collection, no analytics, no trackers.
Web App
Also available as a web app — no installation needed: https://nfcarchiver.com/banana/
Shards created in the app and web version are fully compatible.
Open Source
This app is a fork of banana_split by Parity Technologies, licensed under GPLv3.
Source code: https://github.com/mezinster/banana_split
- 作者: mezinster
- 授權條款: GNU General Public License v3.0 only
- 問題追蹤系統
- 原始碼
- 建置詮釋資料
- 可重現建置狀態
版本
雖然在下方可選擇下載 APK 檔案，但要留意這樣的安裝方式將不會收到更新通知，是一種較不安全的下載方法。建議您先安裝 F-Droid 用戶端使用。
下載 F-Droid-
arm64-v8aarmeabi-v7ax86x86_64此版本需要 Android 5.0 或更高的版本。
此套件包由 F-Droid 建置和簽署，並保證與此原始碼 Tarball 保持一致。
-
arm64-v8aarmeabi-v7ax86x86_64此版本需要 Android 5.0 或更高的版本。
此套件包由 F-Droid 建置和簽署，並保證與此原始碼 Tarball 保持一致。
新版本 0.8.2
• F-Droid preparation — metadata, screenshots, and build recipe
• Fork attribution and source code link on About screen
• Fix scanner state reset on "Start Over"
• Localization fixes and fastlane metadata for all 7 languages
• Fork attribution and source code link on About screen
• Fix scanner state reset on "Start Over"
• Localization fixes and fastlane metadata for all 7 languages