Share in shadows.
Control in light.
Encrypt files, control how they're accessed, choose who can download them, and automatically expire access—all without creating an account.
AES-256-GCM
Zero Knowledge
No Account Required
All File Types
Instant Processing
Privacy First
Why HellSecure?
How It Works
1
Upload Your File
Select any file up to 500MB.
2
Set Protection
Choose view-only or download mode, and set usage limits.
3
Share Package
Send the encrypted .hell file and key separately.
4
Recipient Decrypts
They use the key to access the file securely.
The Zero-Knowledge Split-Key Architecture
1. 100% Local Encryption
Your browser generates a Master Key and encrypts the file. The plaintext file never leaves your device.
2. The Split
The Master Key is split in half. Key A stays with you. Key B goes to our server along with your security rules.
3. Server-Enforced Rules
Your friend needs both halves. Our server only releases Key B if your strict rules (e.g., time limits) allow it.