diff --git a/keyserver/src/creators/invite-link-creator.js b/keyserver/src/creators/invite-link-creator.js
--- a/keyserver/src/creators/invite-link-creator.js
+++ b/keyserver/src/creators/invite-link-creator.js
@@ -2,6 +2,7 @@
 
 import Filter from 'bad-words';
 
+import { inviteLinkBlobHash } from 'lib/shared/invite-links.js';
 import type {
   CreateOrUpdatePublicLinkRequest,
   InviteLink,
@@ -152,7 +153,7 @@
 async function getInviteLinkBlob(
   request: CreateOrUpdatePublicLinkRequest,
 ): Promise<BlobDownloadResult> {
-  const hash = `invite_${request.name}`;
+  const hash = inviteLinkBlobHash(request.name);
   return download(hash);
 }
 
diff --git a/keyserver/src/deleters/link-deleters.js b/keyserver/src/deleters/link-deleters.js
--- a/keyserver/src/deleters/link-deleters.js
+++ b/keyserver/src/deleters/link-deleters.js
@@ -1,5 +1,6 @@
 // @flow
 
+import { inviteLinkBlobHash } from 'lib/shared/invite-links.js';
 import type { DisableInviteLinkRequest } from 'lib/types/link-types.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import { ServerError } from 'lib/utils/errors.js';
@@ -31,7 +32,7 @@
   const [[row]] = await dbQuery(query);
   if (row?.blobHolder) {
     await deleteBlob({
-      hash: `invite_${request.name}`,
+      hash: inviteLinkBlobHash(request.name),
       holder: row.blobHolder,
     });
   }
diff --git a/lib/shared/invite-links.js b/lib/shared/invite-links.js
--- a/lib/shared/invite-links.js
+++ b/lib/shared/invite-links.js
@@ -11,4 +11,8 @@
 
 const defaultErrorMessage = 'Unknown error.';
 
-export { inviteLinkErrorMessages, defaultErrorMessage };
+function inviteLinkBlobHash(secret: string): string {
+  return `invite_${secret}`;
+}
+
+export { inviteLinkErrorMessages, defaultErrorMessage, inviteLinkBlobHash };