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Security

Built for paranoia-level security

SacraKey is designed from the ground up so that no one — not even us — can access your files. Here's how.

End-to-End Encryption

All files are encrypted in your browser using AES-256-GCM before they ever leave your device. Only you and your intended recipients hold the keys.

Zero-Knowledge Architecture

SacraKey cannot read your files — ever. Our servers only store ciphertext. Even if compelled, we have nothing to hand over.

Client-Side Key Management

Encryption keys are generated and stored on your device. Your master key never leaves your browser, ensuring total control.

Per-File Encryption Keys

Every file is encrypted with a unique File Encryption Key (FEK), limiting the blast radius of any single compromise to that file alone.

Automatic Expiry & Revocation

Set custom expiration dates and download limits. Shared links can be revoked at any time, instantly cutting off access.

Encrypted at Rest & in Transit

Data is encrypted on our servers at rest (AES-256) and in transit (TLS 1.3). Double layers of protection, on top of your E2EE.

Audit Logging

Every file access, share event, and download is logged. Monitor who accessed what and when through your security dashboard.

Open & Transparent

Our encryption protocols are openly documented. We believe security through obscurity is no security at all.

How it works

Your BrowserEncrypts with AES-256
SacraKey ServerStores only ciphertext
RecipientDecrypts with their key