Technical computing term for encrypting data so that only the communicating users can read it, with no decryption at intermediate points.
This messaging app uses end-to-end encryption.
General term for encryption; 終端間暗号化 specifically means encryption that protects data from sender to receiver without intermediate decryption.
Compound of 終端 (endpoint) + 間 (between) + 暗号化 (encryption), a calque of English 'end-to-end encryption'.