Unable to derive account‐level private key for Cardano (m/1852’/1815’/0’) with Wallet Core

[dimitris-c]

Hi all,

I’m trying to obtain the raw 32-byte Ed25519 private key at the account node m/1852’/1815’/0’ (CIP-1852) using Wallet-Core, but every time I call:

let wallet = HDWallet(mnemonic: "...", passphrase: "")
let extKey = wallet.getKey(coin: .cardano, derivationPath: "m/1852'/1815'/0'")

it crashes with std::invalid_argument: Invalid private key data. After digging into HDWallet.cpp (lines 174–191), it looks like Wallet-Core doesn't allow this.

Is there any plan to expose the raw account‐level Ed25519 seed for m/1852'/1815'/0' in Wallet-Core (without forcing /0/0)?

[dimitris-c]

Nevemind, I forked the repo and provided the required functionality.