Share Confidential Documents. Leave Zero Trace.
When you send your Aadhaar, bank statements, or tax records to printing shops via WhatsApp or pen drives, they remain permanently on their hard drives. SafePrint prevents data leaks through self-expiring encrypted links, browser-only print stations, and automatic cryptographic key shredding.
The Real-World Threat
Why Traditional Printing Workflows Leak Confidential Data
- Permanent Disk Persistence: Downloads folder, browser cache, and desktop retain unencrypted copies indefinitely.
- Scraping & Identity Theft: Next customer on a cyber cafe terminal can open recently downloaded government IDs.
- Zero Revocation: Once sent via chat, you cannot wipe the shop owner's computer remotely.
- Envelope Encryption: Unique 256-bit AES-GCM key per document. Stored independently from ciphertext.
- Zero-Storage Viewer: Recipient opens in browser with
Cache-Control: no-store. No download button. - Cryptographic Shredding: Once expired or printed, DEK is zeroed and purged from database. File becomes mathematically unrecoverable.
- Dynamic Watermarking: Stamps session ID & time to deter unauthorized mobile photography.
Engineered for Zero Trust
End-to-End Privacy Protection Flow
1. Upload & PII Detection
Magic-byte validator verifies true file type. Algorithmic scanner detects Aadhaar (Verhoeff checksum), PAN, and phone numbers before you share.
2. Fragment-Token QR Sharing
Bearer tokens are delivered strictly in the URL #fragment. The token never touches server access logs or HTTP referrer headers.
3. Self-Destruct & Report
Timer hits 0 or single print ends? The encryption key is shredded in memory and storage objects are overwritten with zeroes. Generates verifiable audit receipt.