Photo and File Encryption in Chat: How Does an Attachment Key Work?
How a file is encrypted, its key is delivered and it is opened on the recipient’s device—and how a per-file key differs from viewing once or saving to a gallery.
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THE LIVARA BLOG / PRIVACY & TECHNOLOGY
A more private internet. A little more understood.
Ideas, explainers, and useful questions about encryption, private messaging, and the technology in your everyday life.
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THE READING ROOM
AES-GCM
Message Integrity: Can the Server Alter an Encrypted Chat?
Understand tampering, authorized edits and message replay. What does AES-GCM authenticate, and why is encryption neither immutable history nor legal evidence?
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