Feature/changes and improvements

[Corey-Code]

This pull request introduces significant improvements to the security and interoperability of the crypto and blockchain modules, with a focus on secure key derivation, BIP32 path validation, and Cosmos IBC (Inter-Blockchain Communication) support. It also includes an important new dependency and some minor code formatting enhancements.

Security and Key Derivation Improvements:

• Enhanced BIP32 key derivation for both Bitcoin and EVM by adding secure memory cleanup (zeroing out sensitive data), validating private keys at each derivation step, and validating BIP32 derivation paths before use. This helps prevent sensitive keys from lingering in memory and guards against invalid key generation. (src/lib/crypto/bitcoin.ts, src/lib/crypto/evm.ts) [1] [2] [3] [4] [5] [6]

• Updated Bitcoin and UTXO derivation path logic to use Keplr-compatible account indexing, aligning with Cosmos chain standards and improving cross-chain wallet compatibility. (src/lib/crypto/bitcoin.ts) [1] [2] [3]

Cosmos IBC Interoperability:

• Added a new src/lib/cosmos/ibc-connections.ts module to fetch, manage, and cache IBC channel data from the Cosmos chain registry, enabling robust cross-chain token transfer support and chain connection discovery. (src/lib/cosmos/ibc-connections.ts)

API and Dependency Updates:

• Exposed additional Bitcoin transaction building and signing functions and types from src/lib/bitcoin/transaction.ts for broader use in the codebase. (src/lib/bitcoin/index.ts)

• Added the @moonpay/moonpay-react dependency to package.json, likely for fiat onramp/offramp integration. (package.json)

Other Improvements:

• Improved code formatting and readability in several crypto utility functions, such as breaking up long parameter lists for better maintainability. (src/lib/crypto/bitcoin.ts) [1] [2] [3]

These changes collectively improve the security, maintainability, and cross-chain compatibility of the codebase.

[Copilot]

Pull request overview

This pull request implements significant security and interoperability improvements for a multi-chain cryptocurrency wallet, focusing on three main areas:

Changes:

• Enhanced BIP32 key derivation with secure memory cleanup, private key validation, and Keplr-compatible derivation paths for Bitcoin and EVM chains
• Added Cosmos IBC (Inter-Blockchain Communication) support with channel discovery, caching, and cross-chain token transfers
• Integrated MoonPay SDK for fiat on/off-ramp functionality with separate implementations for web app (SDK widget) and extension (external tab)
• Implemented Bitcoin transaction building and signing with support for SegWit and legacy formats, including UTXO selection and fee estimation
• Added multi-wallet account management allowing users to create new wallets with separate mnemonics or derive accounts from existing wallets

Reviewed changes

Copilot reviewed 26 out of 28 changed files in this pull request and generated 28 comments.

Show a summary per file

File	Description
vite.config.web.ts, vite.config.js	Added __IS_WEB_BUILD__ build-time constant to differentiate web app from extension
src/vite-env.d.ts	Type declaration for build-time constant
src/lib/crypto/bitcoin.ts	Enhanced BIP32 derivation with security hardening, Keplr-compatible paths, and memory cleanup
src/lib/crypto/evm.ts	Similar security enhancements for EVM key derivation
src/lib/crypto/keyring.ts	Added wallet management for cross-chain signing and forced re-derivation support
src/lib/storage/encrypted-storage.ts	Extended storage to support imported accounts with pre-derived addresses
src/store/walletStore.ts	Major additions for multi-wallet management, cross-chain signing with password
src/lib/bitcoin/transaction.ts	New comprehensive transaction building and signing module for UTXO chains
src/lib/bitcoin/index.ts	Exposed transaction functions in public API
src/lib/cosmos/ibc-connections.ts	New module for IBC connection discovery and management
src/popup/components/IBCTransferModal.tsx	New UI component for IBC token transfers
src/popup/components/MoonPayWidget.tsx	Universal MoonPay widget with web/extension variants
src/popup/components/MoonPaySDKWidget.tsx	Web-specific MoonPay SDK integration
src/popup/components/SendModal.tsx	Added Bitcoin transaction signing support
src/popup/pages/Dashboard.tsx	Added IBC transfer UI, improved account management, address caching
src/popup/pages/Deposit.tsx, Withdraw.tsx	Split into web/extension variants with MoonPay integration
tests/*	Updated and added tests for new derivation paths and transaction building
package.json	Added @moonpay/moonpay-react dependency

Comments suppressed due to low confidence (1)

src/store/walletStore.ts:38

• The syncKeyringWithBackground function skips execution in web builds using __IS_WEB_BUILD__, but doesn't check if browser.runtime.sendMessage is available before calling it. In some edge cases, even in extension builds, the runtime API might not be available (e.g., if the extension context is invalidated). Add a check for browser?.runtime?.sendMessage before attempting to use it.

async function syncKeyringWithBackground(serializedKeyring: string): Promise<void> {
  // Skip in web builds - no background service worker
  if (__IS_WEB_BUILD__) {
    return;
  }

  try {
    const response = await browser.runtime.sendMessage({
      type: MessageType.SYNC_KEYRING,
      payload: { serializedKeyring },
    });
    if (response?.success) {
      console.log('Background service worker synced');
    } else {
      console.warn('Background sync failed:', response?.error);

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[Copilot]

@Corey-Code I've opened a new pull request, #53, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #54, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #55, to work on those changes. Once the pull request is ready, I'll request review from you.

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[Copilot]

@Corey-Code I've opened a new pull request, #56, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #57, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #58, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #59, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #60, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #61, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #62, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@Corey-Code I've opened a new pull request, #63, to work on those changes. Once the pull request is ready, I'll request review from you.