Post-Quantum Invoice Management — secure, offline-first, and just like magic.
Majik Buwiz helps freelancers, consultants, and small business owners create, sign, share, and manage invoices — while keeping full control of their data and privacy. Every invoice is sealed with next-generation cryptography. Your data never leaves your device unless you choose to share it.
Read more about Majik Buwiz here
Click the image to try Majik Buwiz live.
Also available on Microsoft Store for free.
- Majik Buwiz
Most invoicing tools store your data on someone else's servers. Majik Buwiz works the other way around.
- Offline-first — your invoices live on your device by default. No account required. No internet needed for full functionality.
- Secure by design — every invoice is digitally signed for authenticity and can be optionally encrypted for private sharing.
- Future-proof cryptography — uses both well-established and post-quantum algorithms to protect your invoices against current and emerging threats.
- No payment processing — Majik Buwiz is strictly an invoicing and secure communication tool. It does not handle payments.
- Free — no subscriptions, no usage limits, no hidden fees.
- Custom invoice builder with line items, notes, tags, and reference attachments
- Multi-layer tax system — supports VAT, EWT, percentage-based, additive, and withholding taxes
- Automatic calculation of totals, balances, and net payable amounts
- Full invoice lifecycle:
Draft → Issued → Sent → Paid → Voidand more - Batch operations with advanced filtering and pagination
- Recipient and business contact management
- Revenue overview: gross, collected, and outstanding
- Tax breakdown: output tax, withholding tax, and effective tax rate
- Overdue alerts and upcoming due date monitoring
- Average payment time tracking
- Invoice size distribution: average, median, largest, smallest
- Client and recipient revenue analytics
- Financial segmentation by invoice status
- PDF export for professional sharing and printing
- CSV export for accounting tools and bookkeeping imports
- Notes, tags, and reference attachments per invoice
- All data stored locally by default — no forced cloud
- User-controlled cryptographic keys, generated and stored on your device
- Tamper-proof invoice sealing via dual digital signatures
- Optional full encryption for confidential invoice sharing
- Secure local identity protected by passphrase hashing
Majik Buwiz uses a hybrid cryptographic architecture that combines classical and post-quantum algorithms — the same class of security recommended by NIST for long-term data protection.
| Algorithm | Type | Purpose |
|---|---|---|
| Ed25519 | Classical | Trusted standard for fast, reliable signing |
| ML-DSA-87 (FIPS-204) | Post-Quantum | Forgery-resistant signing for quantum-resilient authenticity |
| Algorithm | Type | Purpose |
|---|---|---|
| ML-KEM-768 | Post-Quantum | Key encapsulation for secure key exchange |
| AES-256-GCM | Classical | Symmetric encryption of invoice content |
- Keys are generated and stored locally on your device
- Protected using Argon2id passphrase hashing
- Keys are never transmitted unless you explicitly export them
⚠️ Important: Keep a secure backup of your passphrase and key export. Without it, you may permanently lose access to signed or encrypted content.
Windows (Microsoft Store) Search for "Majik Buwiz" in the Microsoft Store and follow the install prompts.
Web App (coming soon) https://buwiz.majikah.solutions — access Majik Buwiz from any modern browser.
- Open the app and create or unlock your Majik identity — protect it with a strong passphrase.
- Create an invoice: add line items, taxes, notes, and recipient details.
- Sign the invoice locally, then export as PDF or CSV — or send it securely to a recipient via the built-in exchange.
Invoices are fully editable while in Draft status and move through states as your workflow progresses.
- Export invoice PDFs for professional sharing, printing, or email delivery
- Export CSV files for spreadsheets and accounting software imports
- Back up your keys and invoice exports to a secure location (encrypted cloud storage or offline drive)
Majik Buwiz includes a built-in encrypted invoice exchange network:
- Send and receive invoices directly between Majik Buwiz users
- All payloads are end-to-end encrypted before transmission
- Uses a zero-knowledge relay — the relay service cannot read your invoice contents
- Encrypted invoice data is retained temporarily and automatically deleted after 30 days unless updated by participants
- No payment processing — this is strictly a secure communication layer
Majik Buwiz is part of the broader Majikah ecosystem of cryptographic libraries.
Domain model for invoices with an optional cryptographic envelope. Provides two interoperable classes:
GeneralInvoice— pure accounting model with line items, taxes, totals, and projectionsMajikInvoice— wrapper that signs and/or encrypts aGeneralInvoice
Seed phrase account library — required peer dependency for signing.
Hybrid post-quantum content signing and verification library. Combines Ed25519 and ML-DSA-87 (FIPS-204) into a dual-algorithm architecture that produces tamper-proof, forgery-resistant signatures for any content format — plaintext, JSON, PDF, audio, video, or binary.
Core cryptographic engine for the Majikah platform. Provides a post-quantum secure envelope format handling message encryption, multi-recipient key encapsulation, and transparent compression using NIST-standardized algorithms.
Contributions are welcome — whether that's bug reports, feature suggestions, or help expanding platform support.
Reach out via email to get involved: business@thezelijah.world
Apache-2.0 — free for personal and commercial use.
Made with 💙 by @thezelijah
| Developer | Josef Elijah Fabian |
| GitHub | https://github.com/jedlsf |
| Repository | https://github.com/Majikah/majik-buwiz |
| Website | https://www.thezelijah.world |
| Business Email | business@thezelijah.world |