What is PGP?

PGP (Pretty) is a program that allows your e-mail (e-mail) to have a confidential function. This allows you to encrypt your message (Encrypt), and no one else can read it except those you want to see. Once encrypted, the message looks like a bunch of meaningless garbled characters (Random Characters). PGP provides a strong protection function, even the most advanced decoding analysis technology can not read (Decrypt) encrypted text. PGP encryption and decryption, unlike other traditional methods of encryption, is based on the so-called public Key cryptography (cryptology). For example, when you are sending a confidential letter or file to the author, you must first obtain the author's public key, and add it to your public keyring, and then use the author's public key to encrypt the letter. When the author receives your encrypted letter, the author must use its relative private key (Secret key) to decrypt. Therefore, you cannot unlock a letter that you encrypt unless someone else has the author's private key. At the same time, the author in the use of private key decryption, but also must enter the passcode (pass Phrase), so that the encrypted message after a layer of protection. PGP can also provide PGP-specific signatures at the end of the message (Digital Signature; The exclusive signature is the hope that the reader does not confuse the signature in the e-mail message) without encrypting the content. This is usually when you are publicly delivering messages (such as speaking in a Usenet news discussion group), you don't want to hide what you say, but you want to let others know that the message is actually sent by you. Once the signature is added, PGP can be detected by anyone who changes the message itself or the signature. Although PGP is so easy to use, it can also lead to leaks because of misuse. You should try to familiarize yourself with the numerous instructions in PGP and use it to send important messages. For example, when you pgp-sa this command, this will only sign the message without encrypting it. Although the result seems to be encrypted, it is not, anyone in the world can restore it to the original text. To force (0 Votes) Tempted (0 Votes) nonsense (0 Votes) Professional (0 Votes) title Party (0 Votes) passing (0 Votes) Text: What is PGP? Back to network security home