Right-click the folder—GP Desktop—set encryption method.

Right-click the folder - PGP Desktop - Set the encryption method PGP: Full name: Pretty Good Privacy, which is also the name of a hybrid encryption system. It is usually only understood as a series of software from PGP Company. It can encrypt emails, files, folders, and the entire hard disk, encrypt permissions for the entire network segment, and control access permissions. This article explains how to use PGP encryption and decryption.

The RSA algorithm is the first algorithm that can be used for both encryption and digital signatures. The RSA algorithm can generate public and private key pairs.

Suppose A and B want to communicate, then they need to know each other's public key. If a sends information to b, a first encrypts the information (i.e., signs) with his own private key, and then uses b public key for encryption. When b receives the message, he first decrypts it with his own private key, and then uses a's public key to decrypt it (that is, verifying the signature), and then he can see the plaintext information sent by a.