diff --git a/lib/types/crypto-types.js b/lib/types/crypto-types.js
index 4b6b0d56a..754fc4e7c 100644
--- a/lib/types/crypto-types.js
+++ b/lib/types/crypto-types.js
@@ -1,123 +1,129 @@
 // @flow
 
 import t, { type TInterface } from 'tcomb';
 
 import { tShape } from '../utils/validation-utils.js';
 
 export type OLMIdentityKeys = {
   +ed25519: string,
   +curve25519: string,
 };
 const olmIdentityKeysValidator: TInterface<OLMIdentityKeys> =
   tShape<OLMIdentityKeys>({
     ed25519: t.String,
     curve25519: t.String,
   });
 
 export type OLMPrekey = {
   +curve25519: {
     +id: string,
     +key: string,
   },
 };
 
 export type SignedPrekeys = {
   +contentPrekey: string,
   +contentPrekeySignature: string,
   +notifPrekey: string,
   +notifPrekeySignature: string,
 };
 
 export const signedPrekeysValidator: TInterface<SignedPrekeys> =
   tShape<SignedPrekeys>({
     contentPrekey: t.String,
     contentPrekeySignature: t.String,
     notifPrekey: t.String,
     notifPrekeySignature: t.String,
   });
 
 export type OLMOneTimeKeys = {
   +curve25519: { +[string]: string },
 };
 
 export type OneTimeKeysResult = {
   +contentOneTimeKeys: OLMOneTimeKeys,
   +notificationsOneTimeKeys: OLMOneTimeKeys,
 };
 
 export type OneTimeKeysResultValues = {
   +contentOneTimeKeys: $ReadOnlyArray<string>,
   +notificationsOneTimeKeys: $ReadOnlyArray<string>,
 };
 
 export type PickledOLMAccount = {
   +picklingKey: string,
   +pickledAccount: string,
 };
 
 export type CryptoStore = {
   +primaryAccount: PickledOLMAccount,
   +primaryIdentityKeys: OLMIdentityKeys,
   +notificationAccount: PickledOLMAccount,
   +notificationIdentityKeys: OLMIdentityKeys,
 };
 
 export type CryptoStoreContextType = {
   +getInitializedCryptoStore: () => Promise<CryptoStore>,
 };
 
 export type NotificationsOlmDataType = {
   +mainSession: string,
   +picklingKey: string,
   +pendingSessionUpdate: string,
   +updateCreationTimestamp: number,
 };
 
 export type IdentityKeysBlob = {
   +primaryIdentityPublicKeys: OLMIdentityKeys,
   +notificationIdentityPublicKeys: OLMIdentityKeys,
 };
 export const identityKeysBlobValidator: TInterface<IdentityKeysBlob> =
   tShape<IdentityKeysBlob>({
     primaryIdentityPublicKeys: olmIdentityKeysValidator,
     notificationIdentityPublicKeys: olmIdentityKeysValidator,
   });
 
 export type SignedIdentityKeysBlob = {
   +payload: string,
   +signature: string,
 };
 export const signedIdentityKeysBlobValidator: TInterface<SignedIdentityKeysBlob> =
   tShape<SignedIdentityKeysBlob>({
     payload: t.String,
     signature: t.String,
   });
 
 export type UserDetail = {
   +username: string,
   +userID: string,
 };
 
 // This type should not be changed without making equivalent changes to
 // `Message` in Identity service's `reserved_users` module
 export type ReservedUsernameMessage =
   | {
       +statement: 'Add the following usernames to reserved list',
       +payload: $ReadOnlyArray<UserDetail>,
       +issuedAt: string,
     }
   | {
       +statement: 'Remove the following username from reserved list',
       +payload: string,
       +issuedAt: string,
     }
   | {
       +statement: 'This user is the owner of the following username and user ID',
       +payload: UserDetail,
       +issuedAt: string,
     };
 
 export const olmEncryptedMessageTypes = Object.freeze({
   PREKEY: 0,
   TEXT: 1,
 });
+
+export type OlmAPI = {
+  +initializeCryptoAccount: () => Promise<void>,
+  +encrypt: (content: string, deviceID: string) => Promise<string>,
+  +decrypt: (encryptedContent: string, deviceID: string) => Promise<string>,
+};
diff --git a/lib/utils/config.js b/lib/utils/config.js
index 81272c67d..de9c60ff2 100644
--- a/lib/utils/config.js
+++ b/lib/utils/config.js
@@ -1,47 +1,49 @@
 // @flow
 
 import invariant from 'invariant';
 
 import type { CallSingleKeyserverEndpoint } from './call-single-keyserver-endpoint.js';
 import type {
   DispatchRecoveryAttempt,
   CallKeyserverEndpoint,
 } from '../keyserver-conn/keyserver-conn-types.js';
 import type { InitialNotifMessageOptions } from '../shared/crypto-utils.js';
 import type { LogInActionSource } from '../types/account-types.js';
+import type { OlmAPI } from '../types/crypto-types.js';
 import type { PlatformDetails } from '../types/device-types.js';
 
 export type Config = {
   +resolveKeyserverSessionInvalidationUsingNativeCredentials: ?(
     callSingleKeyserverEndpoint: CallSingleKeyserverEndpoint,
     callKeyserverEndpoint: CallKeyserverEndpoint,
     dispatchRecoveryAttempt: DispatchRecoveryAttempt,
     logInActionSource: LogInActionSource,
     keyserverID: string,
     getInitialNotificationsEncryptedMessage?: (
       keyserverID: string,
       options?: ?InitialNotifMessageOptions,
     ) => Promise<string>,
   ) => Promise<void>,
   +setSessionIDOnRequest: boolean,
   +calendarRangeInactivityLimit: ?number,
   +platformDetails: PlatformDetails,
   +authoritativeKeyserverID: string,
+  +olmAPI: OlmAPI,
 };
 
 let registeredConfig: ?Config = null;
 
 const registerConfig = (config: Config) => {
   registeredConfig = { ...registeredConfig, ...config };
 };
 
 const getConfig = (): Config => {
   invariant(registeredConfig, 'config should be set');
   return registeredConfig;
 };
 
 const hasConfig = (): boolean => {
   return !!registeredConfig;
 };
 
 export { registerConfig, getConfig, hasConfig };
diff --git a/native/config.js b/native/config.js
index 750cac0da..02fb29423 100644
--- a/native/config.js
+++ b/native/config.js
@@ -1,21 +1,23 @@
 // @flow
 
 import { Platform } from 'react-native';
 
 import { registerConfig } from 'lib/utils/config.js';
 
 import { resolveKeyserverSessionInvalidationUsingNativeCredentials } from './account/legacy-recover-keyserver-session.js';
 import { authoritativeKeyserverID } from './authoritative-keyserver.js';
+import { olmAPI } from './crypto/olm-api.js';
 import { persistConfig, codeVersion } from './redux/persist.js';
 
 registerConfig({
   resolveKeyserverSessionInvalidationUsingNativeCredentials,
   setSessionIDOnRequest: false,
   calendarRangeInactivityLimit: 15 * 60 * 1000,
   platformDetails: {
     platform: Platform.OS,
     codeVersion,
     stateVersion: persistConfig.version,
   },
   authoritativeKeyserverID,
+  olmAPI,
 });
diff --git a/native/crypto/olm-api.js b/native/crypto/olm-api.js
new file mode 100644
index 000000000..69329ad5d
--- /dev/null
+++ b/native/crypto/olm-api.js
@@ -0,0 +1,15 @@
+// @flow
+
+import type { OlmAPI } from 'lib/types/crypto-types';
+
+import { commCoreModule } from '../native-modules.js';
+
+const olmAPI: OlmAPI = {
+  async initializeCryptoAccount(): Promise<void> {
+    await commCoreModule.initializeCryptoAccount();
+  },
+  encrypt: commCoreModule.encrypt,
+  decrypt: commCoreModule.decrypt,
+};
+
+export { olmAPI };
diff --git a/web/app.react.js b/web/app.react.js
index 5db1f5cdb..25dd8d83a 100644
--- a/web/app.react.js
+++ b/web/app.react.js
@@ -1,432 +1,434 @@
 // @flow
 
 import 'basscss/css/basscss.min.css';
 import './theme.css';
 import { config as faConfig } from '@fortawesome/fontawesome-svg-core';
 import classnames from 'classnames';
 import _isEqual from 'lodash/fp/isEqual.js';
 import * as React from 'react';
 import { DndProvider } from 'react-dnd';
 import { HTML5Backend } from 'react-dnd-html5-backend';
 import { WagmiConfig } from 'wagmi';
 
 import {
   fetchEntriesActionTypes,
   updateCalendarQueryActionTypes,
 } from 'lib/actions/entry-actions.js';
 import { ChatMentionContextProvider } from 'lib/components/chat-mention-provider.react.js';
 import { EditUserAvatarProvider } from 'lib/components/edit-user-avatar-provider.react.js';
 import {
   ModalProvider,
   useModalContext,
 } from 'lib/components/modal-provider.react.js';
 import { StaffContextProvider } from 'lib/components/staff-provider.react.js';
 import {
   createLoadingStatusSelector,
   combineLoadingStatuses,
 } from 'lib/selectors/loading-selectors.js';
 import { isLoggedIn } from 'lib/selectors/user-selectors.js';
 import { extractMajorDesktopVersion } from 'lib/shared/version-utils.js';
 import { TunnelbrokerProvider } from 'lib/tunnelbroker/tunnelbroker-context.js';
 import type { LoadingStatus } from 'lib/types/loading-types.js';
 import type { WebNavInfo } from 'lib/types/nav-types.js';
 import type { Dispatch } from 'lib/types/redux-types.js';
 import { getConfig, registerConfig } from 'lib/utils/config.js';
 import { useDispatch } from 'lib/utils/redux-utils.js';
 import { infoFromURL } from 'lib/utils/url-utils.js';
 import { AlchemyENSCacheProvider, wagmiConfig } from 'lib/utils/wagmi-utils.js';
 
 import QrCodeLogin from './account/qr-code-login.react.js';
 import AppThemeWrapper from './app-theme-wrapper.react.js';
 import { authoritativeKeyserverID } from './authoritative-keyserver.js';
 import WebEditThreadAvatarProvider from './avatars/web-edit-thread-avatar-provider.react.js';
 import Calendar from './calendar/calendar.react.js';
 import Chat from './chat/chat.react.js';
 import { EditModalProvider } from './chat/edit-message-provider.js';
 import { MemberListSidebarProvider } from './chat/member-list-sidebar/member-list-sidebar-provider.react.js';
 import NavigationArrows from './components/navigation-arrows.react.js';
+import { olmAPI } from './crypto/olm-api.js';
 import { initOpaque } from './crypto/opaque-utils.js';
 import { getDatabaseModule } from './database/database-module-provider.js';
 import electron from './electron.js';
 import InputStateContainer from './input/input-state-container.react.js';
 import InviteLinkHandler from './invite-links/invite-link-handler.react.js';
 import InviteLinksRefresher from './invite-links/invite-links-refresher.react.js';
 import LoadingIndicator from './loading-indicator.react.js';
 import { MenuProvider } from './menu-provider.react.js';
 import UpdateModalHandler from './modals/update-modal.react.js';
 import SettingsSwitcher from './navigation-panels/settings-switcher.react.js';
 import Topbar from './navigation-panels/topbar.react.js';
 import useBadgeHandler from './push-notif/badge-handler.react.js';
 import { PushNotificationsHandler } from './push-notif/push-notifs-handler.js';
 import { updateNavInfoActionType } from './redux/action-types.js';
 import DisconnectedBar from './redux/disconnected-bar.js';
 import FocusHandler from './redux/focus-handler.react.js';
 import { KeyserverReachabilityHandler } from './redux/keyserver-reachability-handler.js';
 import { persistConfig } from './redux/persist.js';
 import PolicyAcknowledgmentHandler from './redux/policy-acknowledgment-handler.js';
 import { useSelector } from './redux/redux-utils.js';
 import VisibilityHandler from './redux/visibility-handler.react.js';
 import history from './router-history.js';
 import { MessageSearchStateProvider } from './search/message-search-state-provider.react.js';
 import { createTunnelbrokerInitMessage } from './selectors/tunnelbroker-selectors.js';
 import AccountSettings from './settings/account-settings.react.js';
 import DangerZone from './settings/danger-zone.react.js';
 import KeyserverSelectionList from './settings/keyserver-selection-list.react.js';
 import CommunityPicker from './sidebar/community-picker.react.js';
 import Splash from './splash/splash.react.js';
 import './typography.css';
 import css from './style.css';
 import { TooltipProvider } from './tooltips/tooltip-provider.js';
 import { canonicalURLFromReduxState, navInfoFromURL } from './url-utils.js';
 
 void initOpaque();
 
 // We want Webpack's css-loader and style-loader to handle the Fontawesome CSS,
 // so we disable the autoAddCss logic and import the CSS file. Otherwise every
 // icon flashes huge for a second before the CSS is loaded.
 import '@fortawesome/fontawesome-svg-core/styles.css';
 
 faConfig.autoAddCss = false;
 const desktopDetails = electron?.version
   ? { majorDesktopVersion: extractMajorDesktopVersion(electron?.version) }
   : null;
 
 registerConfig({
   // We can't securely cache credentials on web
   resolveKeyserverSessionInvalidationUsingNativeCredentials: null,
   setSessionIDOnRequest: true,
   // Never reset the calendar range
   calendarRangeInactivityLimit: null,
   platformDetails: {
     platform: electron?.platform ?? 'web',
     codeVersion: 71,
     stateVersion: persistConfig.version,
     ...desktopDetails,
   },
   authoritativeKeyserverID,
+  olmAPI,
 });
 
 const versionBroadcast = new BroadcastChannel('comm_version');
 versionBroadcast.postMessage(getConfig().platformDetails.codeVersion);
 versionBroadcast.onmessage = (event: MessageEvent) => {
   if (event.data && event.data !== getConfig().platformDetails.codeVersion) {
     location.reload();
   }
 };
 
 // Start initializing the database immediately
 void getDatabaseModule();
 
 type BaseProps = {
   +location: {
     +pathname: string,
     ...
   },
 };
 type Props = {
   ...BaseProps,
   // Redux state
   +navInfo: WebNavInfo,
   +entriesLoadingStatus: LoadingStatus,
   +loggedIn: boolean,
   +activeThreadCurrentlyUnread: boolean,
   // Redux dispatch functions
   +dispatch: Dispatch,
   +modals: $ReadOnlyArray<React.Node>,
 };
 
 class App extends React.PureComponent<Props> {
   componentDidMount() {
     const {
       navInfo,
       location: { pathname },
       loggedIn,
     } = this.props;
     const newURL = canonicalURLFromReduxState(navInfo, pathname, loggedIn);
     if (pathname !== newURL) {
       history.replace(newURL);
     }
   }
 
   componentDidUpdate(prevProps: Props) {
     const {
       navInfo,
       location: { pathname },
       loggedIn,
     } = this.props;
     if (!_isEqual(navInfo)(prevProps.navInfo)) {
       const newURL = canonicalURLFromReduxState(navInfo, pathname, loggedIn);
       if (newURL !== pathname) {
         history.push(newURL);
       }
     } else if (pathname !== prevProps.location.pathname) {
       const urlInfo = infoFromURL(pathname);
       const newNavInfo = navInfoFromURL(urlInfo, { navInfo });
       if (!_isEqual(newNavInfo)(navInfo)) {
         this.props.dispatch({
           type: updateNavInfoActionType,
           payload: newNavInfo,
         });
       }
     } else if (loggedIn !== prevProps.loggedIn) {
       const newURL = canonicalURLFromReduxState(navInfo, pathname, loggedIn);
       if (newURL !== pathname) {
         history.replace(newURL);
       }
     }
     if (loggedIn !== prevProps.loggedIn) {
       electron?.clearHistory();
     }
   }
 
   onWordmarkClicked = () => {
     this.props.dispatch({
       type: updateNavInfoActionType,
       payload: { tab: 'chat' },
     });
   };
 
   render(): React.Node {
     let content;
     if (this.props.loggedIn) {
       content = (
         <>
           <WebEditThreadAvatarProvider>
             <EditUserAvatarProvider>
               <StaffContextProvider>
                 <MemberListSidebarProvider>
                   {this.renderMainContent()}
                   {this.props.modals}
                 </MemberListSidebarProvider>
               </StaffContextProvider>
             </EditUserAvatarProvider>
           </WebEditThreadAvatarProvider>
         </>
       );
     } else {
       content = (
         <>
           {this.renderLoginPage()}
           {this.props.modals}
         </>
       );
     }
     return (
       <DndProvider backend={HTML5Backend}>
         <EditModalProvider>
           <MenuProvider>
             <WagmiConfig config={wagmiConfig}>
               <AlchemyENSCacheProvider>
                 <TooltipProvider>
                   <MessageSearchStateProvider>
                     <ChatMentionContextProvider>
                       <FocusHandler />
                       <VisibilityHandler />
                       <PolicyAcknowledgmentHandler />
                       <PushNotificationsHandler />
                       <InviteLinkHandler />
                       <InviteLinksRefresher />
                       {content}
                     </ChatMentionContextProvider>
                   </MessageSearchStateProvider>
                 </TooltipProvider>
               </AlchemyENSCacheProvider>
             </WagmiConfig>
           </MenuProvider>
         </EditModalProvider>
       </DndProvider>
     );
   }
 
   onHeaderDoubleClick = (): void => electron?.doubleClickTopBar();
   stopDoubleClickPropagation: ?(SyntheticEvent<HTMLAnchorElement>) => void =
     electron ? e => e.stopPropagation() : null;
 
   renderLoginPage(): React.Node {
     const { loginMethod } = this.props.navInfo;
 
     if (loginMethod === 'qr-code') {
       return <QrCodeLogin />;
     }
 
     return <Splash />;
   }
 
   renderMainContent(): React.Node {
     const mainContent = this.getMainContentWithSwitcher();
 
     let navigationArrows = null;
     if (electron) {
       navigationArrows = <NavigationArrows />;
     }
 
     const headerClasses = classnames({
       [css.header]: true,
       [css['electron-draggable']]: electron,
     });
 
     const wordmarkClasses = classnames({
       [css.wordmark]: true,
       [css['electron-non-draggable']]: electron,
       [css['wordmark-macos']]: electron?.platform === 'macos',
     });
 
     return (
       <div className={css.layout}>
         <KeyserverReachabilityHandler />
         <DisconnectedBar />
         <UpdateModalHandler />
         <header
           className={headerClasses}
           onDoubleClick={this.onHeaderDoubleClick}
         >
           <div className={css['main-header']}>
             <h1 className={wordmarkClasses}>
               <a
                 title="Comm Home"
                 aria-label="Go to Comm Home"
                 onClick={this.onWordmarkClicked}
                 onDoubleClick={this.stopDoubleClickPropagation}
               >
                 Comm
               </a>
             </h1>
             {navigationArrows}
             <div className={css['upper-right']}>
               <LoadingIndicator
                 status={this.props.entriesLoadingStatus}
                 size="medium"
                 loadingClassName={css['page-loading']}
                 errorClassName={css['page-error']}
               />
             </div>
           </div>
         </header>
         <InputStateContainer>{mainContent}</InputStateContainer>
         <div className={css.sidebar}>
           <CommunityPicker />
         </div>
       </div>
     );
   }
 
   getMainContentWithSwitcher(): React.Node {
     const { tab, settingsSection } = this.props.navInfo;
     let mainContent: React.Node;
 
     if (tab === 'settings') {
       if (settingsSection === 'account') {
         mainContent = <AccountSettings />;
       } else if (settingsSection === 'friend-list') {
         mainContent = null;
       } else if (settingsSection === 'block-list') {
         mainContent = null;
       } else if (settingsSection === 'keyservers') {
         mainContent = <KeyserverSelectionList />;
       } else if (settingsSection === 'build-info') {
         mainContent = null;
       } else if (settingsSection === 'danger-zone') {
         mainContent = <DangerZone />;
       }
       return (
         <div className={css['main-content-container']}>
           <div className={css.switcher}>
             <SettingsSwitcher />
           </div>
           <div className={css['main-content']}>{mainContent}</div>
         </div>
       );
     }
 
     if (tab === 'calendar') {
       mainContent = <Calendar url={this.props.location.pathname} />;
     } else if (tab === 'chat') {
       mainContent = <Chat />;
     }
 
     const mainContentClass = classnames(
       css['main-content-container'],
       css['main-content-container-column'],
     );
     return (
       <div className={mainContentClass}>
         <Topbar />
         <div className={css['main-content']}>{mainContent}</div>
       </div>
     );
   }
 }
 
 const fetchEntriesLoadingStatusSelector = createLoadingStatusSelector(
   fetchEntriesActionTypes,
 );
 const updateCalendarQueryLoadingStatusSelector = createLoadingStatusSelector(
   updateCalendarQueryActionTypes,
 );
 
 const ConnectedApp: React.ComponentType<BaseProps> = React.memo<BaseProps>(
   function ConnectedApp(props) {
     const activeChatThreadID = useSelector(
       state => state.navInfo.activeChatThreadID,
     );
     const navInfo = useSelector(state => state.navInfo);
 
     const fetchEntriesLoadingStatus = useSelector(
       fetchEntriesLoadingStatusSelector,
     );
     const updateCalendarQueryLoadingStatus = useSelector(
       updateCalendarQueryLoadingStatusSelector,
     );
     const entriesLoadingStatus = combineLoadingStatuses(
       fetchEntriesLoadingStatus,
       updateCalendarQueryLoadingStatus,
     );
 
     const loggedIn = useSelector(isLoggedIn);
     const activeThreadCurrentlyUnread = useSelector(
       state =>
         !activeChatThreadID ||
         !!state.threadStore.threadInfos[activeChatThreadID]?.currentUser.unread,
     );
 
     useBadgeHandler();
 
     const dispatch = useDispatch();
     const modalContext = useModalContext();
     const modals = React.useMemo(
       () =>
         modalContext.modals.map(([modal, key]) => (
           <React.Fragment key={key}>{modal}</React.Fragment>
         )),
       [modalContext.modals],
     );
 
     const tunnelbrokerInitMessage = useSelector(createTunnelbrokerInitMessage);
 
     return (
       <AppThemeWrapper>
         <TunnelbrokerProvider initMessage={tunnelbrokerInitMessage}>
           <App
             {...props}
             navInfo={navInfo}
             entriesLoadingStatus={entriesLoadingStatus}
             loggedIn={loggedIn}
             activeThreadCurrentlyUnread={activeThreadCurrentlyUnread}
             dispatch={dispatch}
             modals={modals}
           />
         </TunnelbrokerProvider>
       </AppThemeWrapper>
     );
   },
 );
 
 function AppWithProvider(props: BaseProps): React.Node {
   return (
     <ModalProvider>
       <ConnectedApp {...props} />
     </ModalProvider>
   );
 }
 
 export default AppWithProvider;
diff --git a/web/crypto/olm-api.js b/web/crypto/olm-api.js
new file mode 100644
index 000000000..1a5f6cb9b
--- /dev/null
+++ b/web/crypto/olm-api.js
@@ -0,0 +1,47 @@
+// @flow
+
+import olm from '@commapp/olm';
+import type { Account, Session } from '@commapp/olm';
+
+import {
+  type OlmAPI,
+  olmEncryptedMessageTypes,
+} from 'lib/types/crypto-types.js';
+
+// methods below are just mocks to SQLite API
+// implement proper methods tracked in ENG-6462
+// eslint-disable-next-line no-unused-vars
+function getOlmAccount(): Account {
+  return new olm.Account();
+}
+// eslint-disable-next-line no-unused-vars
+function getOlmSession(deviceID: string): Session {
+  return new olm.Session();
+}
+// eslint-disable-next-line no-unused-vars
+function storeOlmAccount(account: Account): void {}
+// eslint-disable-next-line no-unused-vars
+function storeOlmSession(session: Session): void {}
+
+const olmAPI: OlmAPI = {
+  async initializeCryptoAccount(): Promise<void> {
+    await olm.init();
+  },
+  async encrypt(content: string, deviceID: string): Promise<string> {
+    const session = getOlmSession(deviceID);
+    const { body } = session.encrypt(content);
+    storeOlmSession(session);
+    return body;
+  },
+  async decrypt(encryptedContent: string, deviceID: string): Promise<string> {
+    const session = getOlmSession(deviceID);
+    const result = session.decrypt(
+      olmEncryptedMessageTypes.TEXT,
+      encryptedContent,
+    );
+    storeOlmSession(session);
+    return result;
+  },
+};
+
+export { olmAPI };