Building a Bitcoin Hardware Wallet with Golang and a Raspberry Pi Zero
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The document details the process of building a Bitcoin hardware wallet using Golang and a Raspberry Pi Zero, discussing different types of Bitcoin wallets, their security features, and risks. It covers the specifications of the Raspberry Pi Zero and the advantages of using the Go programming language for this project. Additionally, it outlines steps for implementation, potential risks, and solutions for securing the wallet.
Building a Bitcoin Hardware Wallet with Golang and a Raspberry Pi Zero
- 1. Building a Bitcoin Hardware Wallet with Golang and a Raspberry Pi Zero Nic Raboy | @nraboy Tracy Developer Meetup Organizer
- 2. Disclaimer I am not an expert in cryptocurrency and encryption.
- 3. Agenda 1. A Background on the Various Bitcoin Wallets 2. What is the Raspberry Pi Zero 3. Open Ledger Micro Demo 4. Interacting with Bitcoin with the Go Programming Language 5. Understanding the Risks and Limitations
- 4. A Background on the Various Bitcoin Wallets
- 5. Exchange Wallets â Coinbase, Binance, Kraken, etc. â Conveniently managed by a third party. â As secure as the exchange. â Mt.Gox, Bitfinex, Coincheck, etc. â The exchange is in control of any and all currency.
- 6. Software Wallets â Exodus, Electrum, Bitcoin Core, etc. â You control your cryptocurrency data. â Risk of a malicious remote attack is decreased. â As secure as your computer. â Risk of malware attacks. â Risk of hard disk failure.
- 7. Paper Wallets â QR Codes, Plaintext, Barcodes, etc. â Cyberattacks are eliminated. â Risk of elemental damage such as fire. â Risk of theft from burglary.
- 8. Hardware Wallets â Ledger Nano S, Trezor, etc. â Encrypted and disconnected from the internet. â Accessible from a single host machine at any given time.
- 9. What is the Raspberry Pi Zero
- 10. Raspberry Pi and Raspberry Pi Zero
- 11. Raspberry Pi 3 - $35.00 â 1.4 GHz Quad-Core CPU â 1 GB RAM â WiFi and BLE â HDMI â 4x USB â Gigabit Ethernet
- 12. Raspberry Pi Zero - $5.00 â 1 GHz Single-Core CPU â 512 MB RAM â Mini HDMI â Micro USB On-the-Go (OTG)
- 14. Open Ledger Micro Demo
- 15. Interacting with Bitcoin with the Go Programming Language
- 16. The Go Programming Language â Create dependency free application binaries. â Cross-compile to nearly any CPU architecture and operating system. â Great for networking and concurrency. â In-demand programming language. â Mild learning curve.
- 17. Project Dependencies â github.com/GeertJohan/go.rice â github.com/gorilla/mux â github.com/btcsuite/btcutil â github.com/btcsuite/btcd
- 19. High Level Plan â Must create an encrypted database file. â Must be able to decrypt a database file. â Must be able to add coin data to a database file. â Must be able to generate signed transactions.
- 20. Data Structures
- 22. Generate Private Keys and Public Addresses
- 24. Encrypt and Decrypt Binary Data
- 25. Encrypt and Decrypt Files
- 26. Import Coin Into Wallet
- 27. Get Addresses without Private Keys
- 28. Transactions
- 31. Create Wallet API Endpoint
- 32. Create Coin API Endpoint
- 33. Import Coin API Endpoint
- 34. Get Addresses API Endpoint
- 35. Create Transaction API Endpoint
- 36. Understanding the Risks and Limitations
- 37. Risks and Limitations 1. Wallet password can be brute forced from host machine 2. Passwords can be compromised from malware on host machine 3. Hard disk corruption or failure on the Raspberry Pi Zero
- 38. Possible Solutions 1. Set retry timeout or wipe Raspberry Pi Zero after X failed attempts 2. Hardware buttons 3. Airgap with QR codes and cameras 4. Backups
- 39. Whatâs Next?
- 40. Tutorial and Code In-Depth Tutorial: https://www.thepolyglotdeveloper.com/2018/03/create-bitcoin-hardware-wallet- golang-raspberry-pi-zero/ Source Code: https://github.com/nraboy/open-ledger-micro