ZMath / Zero Boundary Algebra

Automatic Shield vault protection.

CallChat Shield is the ZMath-powered vault layer for protected files, attachments, and private notes. On callchat.org, Shield is included as the free hosted showcase. Other servers can enable the proprietary Shield layer through a paid ZMath license.

Open CallChat View licensing Download PDF

Hosted benefit

CallChat users do not manage extra Shield secrets manually.

The hosted experience is automatic: the compatible CallChat app/module creates, stores, and uses the needed Shield material locally for normal vault actions. Users see a clean protected-file workflow instead of being asked to invent extra pattern/password material for every file.

Standard Matrix chat remains free. Shield is additive: it protects selected vault files and attachments without turning normal messages into a locked paid feature.

callchat.orgAutomatic Shield showcase included for active hosted accounts.

Other serversZMath Shield requires a paid license and approved deployment.

Element fallbackElement can still use normal chat and download protected containers.

How Shield is presented to users

01 Select content A file, attachment, or vault note is marked for Shield protection.

02 Auto protect The CallChat module manages local Shield material and produces a protected container.

03 Send or store The protected .zme1 container travels through Matrix as an attachment.

Public pages do not contain the premium encryption implementation. They describe behaviour, pricing, and safety boundaries only. The private ZMath engine stays in protected modules, not public website JavaScript.

Hosted

CallChat

Free hosted showcase for active callchat.org accounts, including automatic Shield vault direction.

$0 Start with CallChat

Individual

External Shield

Personal ZMath Shield access for users outside the hosted CallChat showcase.

$5/month Pay with PayPal

Business

Team Shield

Up to 10 users for secure rooms, vault workflows, and private rollout guidance.

$55/month Request business

Self-hosted

Server License

One approved self-hosted deployment with unlimited users and protected premium source boundary.

$55/month Request self-hosted

What license buyers get

Automatic user flow

Users get a clean Shield workflow where vault protection is handled by the compatible app/module.

Policy entitlement

Licensed servers can use approved entitlement checks for business or self-hosted Shield access.

Protected source boundary

Licensing grants use of the premium layer, not republication of private ZMath source code.

Clear fallback

Normal Matrix messaging remains usable; Shield files appear as protected containers to clients without Shield tooling.