diff --git a/web/account/siwe-login-form.react.js b/web/account/siwe-login-form.react.js
--- a/web/account/siwe-login-form.react.js
+++ b/web/account/siwe-login-form.react.js
@@ -36,7 +36,7 @@
 import LoadingIndicator from '../loading-indicator.react.js';
 import { useSelector } from '../redux/redux-utils.js';
 import { webLogInExtraInfoSelector } from '../selectors/account-selectors.js';
-import { signedIdentityKeysBlobSelector } from '../selectors/socket-selectors.js';
+import { getSignedIdentityKeysBlobSelector } from '../selectors/socket-selectors.js';
 
 type SIWELoginFormProps = {
   +cancelSIWEAuthFlow: () => void,
@@ -78,9 +78,26 @@
     state => state.cryptoStore.primaryIdentityKeys,
   );
 
-  const signedIdentityKeysBlob: ?SignedIdentityKeysBlob = useSelector(
-    signedIdentityKeysBlobSelector,
-  );
+  const getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob> =
+    useSelector(getSignedIdentityKeysBlobSelector);
+
+  const [signedIdentityKeysBlob, setSignedIdentityKeysBlob] =
+    React.useState<?SignedIdentityKeysBlob>(null);
+
+  React.useEffect(() => {
+    (async () => {
+      if (
+        getSignedIdentityKeysBlob === null ||
+        getSignedIdentityKeysBlob === undefined
+      ) {
+        setSignedIdentityKeysBlob(null);
+        return;
+      }
+      const resolvedSignedIdentityKeysBlob: SignedIdentityKeysBlob =
+        await getSignedIdentityKeysBlob();
+      setSignedIdentityKeysBlob(resolvedSignedIdentityKeysBlob);
+    })();
+  }, [getSignedIdentityKeysBlob]);
 
   const callSIWEAuthEndpoint = React.useCallback(
     (message: string, signature: string, extraInfo) => {
diff --git a/web/account/traditional-login-form.react.js b/web/account/traditional-login-form.react.js
--- a/web/account/traditional-login-form.react.js
+++ b/web/account/traditional-login-form.react.js
@@ -29,7 +29,7 @@
 import Input from '../modals/input.react.js';
 import { useSelector } from '../redux/redux-utils.js';
 import { webLogInExtraInfoSelector } from '../selectors/account-selectors.js';
-import { signedIdentityKeysBlobSelector } from '../selectors/socket-selectors.js';
+import { getSignedIdentityKeysBlobSelector } from '../selectors/socket-selectors.js';
 
 const loadingStatusSelector = createLoadingStatusSelector(logInActionTypes);
 function TraditionalLoginForm(): React.Node {
@@ -39,9 +39,26 @@
   const dispatchActionPromise = useDispatchActionPromise();
   const modalContext = useModalContext();
 
-  const signedIdentityKeysBlob: ?SignedIdentityKeysBlob = useSelector(
-    signedIdentityKeysBlobSelector,
-  );
+  const getSignedIdentityKeysBlob: ?() => Promise<SignedIdentityKeysBlob> =
+    useSelector(getSignedIdentityKeysBlobSelector);
+
+  const [signedIdentityKeysBlob, setSignedIdentityKeysBlob] =
+    React.useState<?SignedIdentityKeysBlob>(null);
+
+  React.useEffect(() => {
+    (async () => {
+      if (
+        getSignedIdentityKeysBlob === null ||
+        getSignedIdentityKeysBlob === undefined
+      ) {
+        setSignedIdentityKeysBlob(null);
+        return;
+      }
+      const resolvedSignedIdentityKeysBlob: SignedIdentityKeysBlob =
+        await getSignedIdentityKeysBlob();
+      setSignedIdentityKeysBlob(resolvedSignedIdentityKeysBlob);
+    })();
+  }, [getSignedIdentityKeysBlob]);
 
   const usernameInputRef = React.useRef();
   React.useEffect(() => {
diff --git a/web/selectors/socket-selectors.js b/web/selectors/socket-selectors.js
--- a/web/selectors/socket-selectors.js
+++ b/web/selectors/socket-selectors.js
@@ -24,6 +24,7 @@
 } from 'lib/types/session-types.js';
 import type { OneTimeKeyGenerator } from 'lib/types/socket-types.js';
 
+import { initOlm } from '../olm/olm-utils.js';
 import type { AppState } from '../redux/redux-setup.js';
 
 const openSocketSelector: (state: AppState) => () => WebSocket = createSelector(
@@ -38,9 +39,9 @@
   (sessionID: ?string): SessionIdentification => ({ sessionID }),
 );
 
-const signedIdentityKeysBlobSelector: (
+const getSignedIdentityKeysBlobSelector: (
   state: AppState,
-) => ?SignedIdentityKeysBlob = createSelector(
+) => ?() => Promise<SignedIdentityKeysBlob> = createSelector(
   (state: AppState) => state.cryptoStore.primaryAccount,
   (state: AppState) => state.cryptoStore.primaryIdentityKeys,
   (state: AppState) => state.cryptoStore.notificationIdentityKeys,
@@ -53,36 +54,27 @@
       return null;
     }
 
-    const primaryOLMAccount = new olm.Account();
-    primaryOLMAccount.unpickle(
-      primaryAccount.picklingKey,
-      primaryAccount.pickledAccount,
-    );
+    return async () => {
+      await initOlm();
+      const primaryOLMAccount = new olm.Account();
+      primaryOLMAccount.unpickle(
+        primaryAccount.picklingKey,
+        primaryAccount.pickledAccount,
+      );
 
-    const identityKeysBlob: IdentityKeysBlob = {
-      primaryIdentityPublicKeys: primaryIdentityKeys,
-      notificationIdentityPublicKeys: notificationIdentityKeys,
-    };
+      const identityKeysBlob: IdentityKeysBlob = {
+        primaryIdentityPublicKeys: primaryIdentityKeys,
+        notificationIdentityPublicKeys: notificationIdentityKeys,
+      };
 
-    const payloadToBeSigned: string = JSON.stringify(identityKeysBlob);
-    const signedIdentityKeysBlob: SignedIdentityKeysBlob = {
-      payload: payloadToBeSigned,
-      signature: primaryOLMAccount.sign(payloadToBeSigned),
-    };
-
-    return signedIdentityKeysBlob;
-  },
-);
+      const payloadToBeSigned: string = JSON.stringify(identityKeysBlob);
+      const signedIdentityKeysBlob: SignedIdentityKeysBlob = {
+        payload: payloadToBeSigned,
+        signature: primaryOLMAccount.sign(payloadToBeSigned),
+      };
 
-const getSignedIdentityKeysBlobSelector: (
-  state: AppState,
-) => ?() => Promise<SignedIdentityKeysBlob> = createSelector(
-  signedIdentityKeysBlobSelector,
-  (signedIdentityKeysBlob: ?SignedIdentityKeysBlob) => {
-    if (!signedIdentityKeysBlob) {
-      return null;
-    }
-    return async () => signedIdentityKeysBlob;
+      return signedIdentityKeysBlob;
+    };
   },
 );
 
@@ -128,7 +120,7 @@
 export {
   openSocketSelector,
   sessionIdentificationSelector,
-  signedIdentityKeysBlobSelector,
+  getSignedIdentityKeysBlobSelector,
   webGetClientResponsesSelector,
   webSessionStateFuncSelector,
 };