Use Cases
How to Send Confidential Legal Documents Securely?
Quick Answer
Use zkChat's encrypted file drop — documents are encrypted with AES-256-GCM in your browser before upload. The server never sees the unencrypted document. No account needed.
Detailed Explanation
Legal documents require the highest level of confidentiality. Standard email, even with TLS, is not sufficient because the email provider can access attachments. Cloud services like Google Drive or Dropbox have access to your files. For truly confidential document sharing: (1) Use zkChat's file drop at zkchat.org/file — files are encrypted in your browser with AES-256-GCM before upload. (2) The encryption key is in the URL fragment and never reaches the server. (3) Share the link with the recipient through a separate secure channel. (4) The file auto-expires after the session. (5) No account or registration needed — no trail of who sent what. This approach satisfies attorney-client privilege requirements because no third party (including zkChat) can access the document content.
Related Questions
How to Send Files Securely Online?
Use zkChat's encrypted file drop — files are encrypted in your browser with AES-256-GCM before upload. The server never sees the unencrypted file.
How to Send a Password Securely?
Never send passwords over email or regular chat. Use zkChat's One-Time Message feature — the password is encrypted, and the link self-destructs after one view.
What Is Zero-Knowledge Encryption?
Zero-knowledge encryption means the service provider is technically unable to access your data — not just promising not to, but cryptographically prevented from doing so.
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