bitwarden-estensione-browser/apps/browser/src/services/browserCrypto.service.ts

import { KeySuffixOptions } from "@bitwarden/common/enums/keySuffixOptions";
import { CryptoService } from "@bitwarden/common/services/crypto.service";

export class BrowserCryptoService extends CryptoService {
  protected async retrieveKeyFromStorage(keySuffix: KeySuffixOptions) {
    if (keySuffix === "biometric") {
      await this.platformUtilService.authenticateBiometric();
      return (await this.getKey())?.keyB64;
    }

    return await super.retrieveKeyFromStorage(keySuffix);
  }
}