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widget: use ephemeral addresses for penumbra #1

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widget: use ephemeral addresses for penumbra #1

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27 changes: 7 additions & 20 deletions packages/widget/src/hooks/useCreateCosmosWallets.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ import { useAtom, useAtomValue } from "jotai";
import { createPenumbraClient } from "@penumbra-zone/client";
import { ViewService } from "@penumbra-zone/protobuf";
import { bech32mAddress } from "@penumbra-zone/bech32m/penumbra";
import { TransparentAddressRequest } from "@penumbra-zone/protobuf/penumbra/view/v1/view_pb";
import { Chain, ChainType } from "@skip-go/client";
import {
getCosmosWalletInfo,
Expand Down Expand Up @@ -285,37 +284,25 @@ const handlePenumbraNetwork = (
throw new Error("Prax wallet is not supported");
},
getAddress: async ({ praxWallet }) => {
const penumbraWalletIndex = praxWallet?.index;
const sourceChainID = praxWallet?.sourceChainID;
const penumbraSubaccountIndex = praxWallet?.index;
const prax_id = "lkpmkhpnhknhmibgnmmhdhgdilepfghe";
const prax_origin = `chrome-extension://${prax_id}`;
const client = createPenumbraClient(prax_origin);
try {
await client.connect();
const viewService = client.service(ViewService);
// To deposit into penumbra, we generate an ephemeral address
// this is a randomized address that is generated for each deposit.
//
// Noble Mainnet is the exception to this rule.
// If the chain is noble-1, we use a transparent address.
// This means that the address is the same for all deposits.
//
// Note: once Noble upgrades their network, this special casing can be removed.
// And all addresses can be ephemeral with bech32m encoding.
if (sourceChainID === "noble-1") {
const address = await viewService.transparentAddress(new TransparentAddressRequest({}));
if (!address.address) throw new Error("No address found");
// The view service did the work of encoding the address for us.
return { address: address.encoding };
} else {
// To deposit into penumbra, we generate an "ephemeral address",
// this is an address that is generated for each deposit,
// randomized each time, but tied to the same wallet.
const ephemeralAddress = await viewService.ephemeralAddress({
addressIndex: {
account: penumbraWalletIndex ? penumbraWalletIndex : 0,
// This is the subaccount of the wallet.
// Default is zero.
account: penumbraSubaccountIndex ? penumbraSubaccountIndex : 0,
},
});
if (!ephemeralAddress.address) throw new Error("No address found");
return { address: bech32mAddress(ephemeralAddress.address) };
}
} catch (error) {
console.error(error);
throw error;
Expand Down