Increase MAX_LIST_SIZE to 67108864 (2^26`).

Author: dlongley

CHANGELOG.md

@@ -1,5 +1,11 @@
 # bedrock-vc-status ChangeLog
 
+## 1.1.0 - 2025-mm-dd
+
+### Changed
+- Increase `MAX_LIST_SIZE` to accommodate lists of up to size `2^26`, which is
+  how large terse bitstring status lists are by default.
+
 ## 1.0.0 - 2024-08-02
 
 ### Added

lib/constants.js

@@ -1,5 +1,5 @@
 /*!
- * Copyright (c) 2024 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2024-2025 Digital Bazaar, Inc. All rights reserved.
  */
 // matching status list type => status entry type
 export const LIST_TYPE_TO_ENTRY_TYPE = new Map([
@@ -8,6 +8,12 @@ export const LIST_TYPE_TO_ENTRY_TYPE = new Map([
   ['StatusList2021', 'StatusList2021Entry']
 ]);
 
-export const MAX_LIST_SIZE = 131072;
+// max list size is 2^26, which is the largest size a totally random,
+// unencrypted list can be (8MiB) without breaking the max 10MiB storage
+// barrier for a single VC -- leaving 2MiB of space for other information
+// beyond the list in a status list credential
+// 2^26/2^3/2^10/2^10=2^3 = 8
+// 67108864 bits / 8 / 1024 / 1024 = 8MiB
+export const MAX_LIST_SIZE = 67108864;
 
 export const serviceType = 'vc-status';

test/mocha/20-status.js

@@ -1,5 +1,5 @@
 /*!
- * Copyright (c) 2020-2024 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2020-2025 Digital Bazaar, Inc. All rights reserved.
  */
 import * as helpers from './helpers.js';
 import {v4 as uuid} from 'uuid';
@@ -64,7 +64,7 @@ describe('status APIs', () => {
       ]);
     });
 
-    it('creates a "BitstringStatusList" status list', async () => {
+    it('creates a "BitstringStatusList" status list size=2^17', async () => {
       const statusListId = `${statusInstanceId}/status-lists/${uuid()}`;
       const statusListOptions = {
         credentialId: statusListId,
@@ -102,6 +102,44 @@ describe('status APIs', () => {
       ]);
     });
 
+    it('creates a "BitstringStatusList" status list size=2^26', async () => {
+      const statusListId = `${statusInstanceId}/status-lists/${uuid()}`;
+      const statusListOptions = {
+        credentialId: statusListId,
+        type: 'BitstringStatusList',
+        indexAllocator: `urn:uuid:${uuid()}`,
+        length: 67108864,
+        statusPurpose: 'revocation'
+      };
+      let error;
+      let result;
+      try {
+        result = await helpers.createStatusList({
+          url: statusListId,
+          capabilityAgent,
+          capability: statusInstanceRootZcap,
+          statusListOptions
+        });
+      } catch(e) {
+        error = e;
+      }
+      assertNoError(error);
+      should.exist(result.id);
+      result.id.should.equal(statusListId);
+
+      // get status list and make assertions on it
+      const slc = await helpers.getStatusListCredential({statusListId});
+      should.exist(slc);
+      slc.should.include.keys([
+        'id', 'credentialSubject', 'validFrom', 'validUntil'
+      ]);
+      slc.id.should.equal(statusListOptions.credentialId);
+      slc.id.should.equal(statusListId);
+      slc.credentialSubject.should.include.keys([
+        'id', 'type', 'encodedList', 'statusPurpose'
+      ]);
+    });
+
     it('creates a status list with non-equal credential ID', async () => {
       // suffix must match
       const suffix = `/status-lists/${uuid()}`;