Zondax HW wallet support: from 0 to Hero
summary
Zondax delivers a working Ledger app and desktop integration that lets Zecwallet Lite create and broadcast shielded Zcash transactions: heavy tasks (note decryption and zk-proof generation) run on the host while the Ledger keeps the signing key and supplies randomness and proof material for verification. Implementation fits tight device flash (320 KB on Nano S) with clever packing so support shifts to Nano S+ only, required a patch to Sapling signature formatting (public‑key prefix before sighash), and the demo broadcasts real transactions—single spends take ~1–2 minutes, five spends ~7 minutes.
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chapters (5)
- 0:00Start
- 1:55Hardware wallets
- 5:13Step 1: Z-addresses in the Ledger hardware wallet Limited memory & computational power
- 14:43Step 2: Integrating the app with a wallet
- 20:06Transparent signature
