End-to-end encryption is a system that allows Alice and Bob to exchange encrypted messages over an open communication channel, while third parties can not access their correspondence. End-to-end encryption is used in most modern instant messengers , such as WhatsApp and Telegram.
End-to-end encryption is based on an asymmetric algorithm in which each party has two keys: public and private. Alice tells Bob and the world his public key, which is used to encrypt messages addressed to Alice. In this case, Alice has a private key, which is known only to her, and with which you can decrypt messages encrypted with a public key.
End-to-end encryption is in the list: Computers