@digitalshieldfe/airgap-pin-kdf

Native PBKDF2-HMAC-SHA256 for React Native cold wallets (iOS CommonCrypto / Android).

Used by ColdVault via installPinKdf / createColdVault({ pinKdf: nativePinKdf }) so PIN stretching does not run in JS.

Link

Autolinking via react-native.config.js / podspec:

yarn
yarn workspace @digitalshieldfe/example pods   # iOS

API

import {
  nativePinKdf,
  isNativePinKdfAvailable,
} from "@digitalshieldfe/airgap-pin-kdf";
import { installPinKdf } from "@digitalshieldfe/airgap-keyring";

if (isNativePinKdfAvailable()) {
  installPinKdf(nativePinKdf);
}

nativePinKdf(pin, salt, iterations) returns a 32-byte key (Uint8Array).

Errors

Throws AirGapError with NATIVE_PIN_KDF_NOT_LINKED when the native module is missing — rebuild the app after adding the dependency.

See root README §12.