What is End-to-End Encryption?
E2EE
End-to-end encryption is a security scheme that only the ends read.
Definition and Word Origin
Data is locked on the device, unlocked on the destination. The carrier and server cannot see the content. It is the basic shield of privacy. WhatsApp and Signal are known examples.
How to Know and Use in Daily Life?
Message: Private chats.
File: Secure transmission.
Spare: Encrypted copy.
Technical Depth and Architecture
Order:
Key pair: Public and private key.
Verification: Identity of the other party.
Transmission privacy: The session key is refreshed.
Rule: The backup is kept encrypted, the key is stored separately. Recovery code required in case of device loss.
Frequently Mixed Things
It is thought to be TLS. TLS protects the path, the server sees it. When it's end-to-end, even the server can't see it. One is courier armor, the other is sealed envelope.
Use in Different Disciplines
Locked box: The carrier cannot see the content.
Seal: An envelope that is obvious when opened.
Closed circuit: Closed line to outside.
Questions and answers
If it is stolen, can it be read?
No. The key is in the ends, the stolen pile is meaningless.
Is it available in every application?
No. It is controlled from the settings, no assumptions are made.
How to backup?
Encrypted backup and recovery code required. There is no return without code.
Is it corporate appropriate?
It is balanced by the need for recording and auditing. Policy is determined.
Related terms
Related tools
This explanation was written in plain language for TreScout with AI and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →