Open Pretty Good Privacy For E-mails.
Also called OPGP, is a program that is used to encrypt and decrypt emails, texts and files.
The original PGP is based on a system of private and public keys. Anyone who wants to send an encrypted message to a person uses their public key. The recipient then uses his private key to decrypt the message. In English, PKI, Public Key Infrastructure technology is called. PKI is also used to establish encrypted connections over the Internet.