{"id":72,"date":"2022-01-16T14:10:24","date_gmt":"2022-01-16T14:10:24","guid":{"rendered":"https:\/\/yohost.org\/library\/?p=72"},"modified":"2022-11-07T17:47:46","modified_gmt":"2022-11-07T17:47:46","slug":"sending-encrypted-e-mails-with-pgp","status":"publish","type":"post","link":"https:\/\/yohost.org\/library\/sending-encrypted-e-mails-with-pgp\/","title":{"rendered":"Sending encrypted e-mails with PGP"},"content":{"rendered":"\n

PGP stands for Pretty Good Privacy – encryption software which uses a combination of hashing, symmetric-key and public-key cryptography for secure data communication. The first version of PGP was created in 1991 by Phil Zimmermann. Read more about PGP in Wikipedia<\/a>.<\/p>\n\n\n\n

How it works in simple words<\/h2>\n\n\n\n

PGP works by creating a key pair – public and private. Public key is shared among the senders and used to encrypt messages\/files. Private key is used to decrypt emails and files encrypted with the public key. For example, Mike wants to receive an encrypted email from Joe. For this, Mike creates a key pair and shares his public key with Joe. Then Joe creates a message, encrypt it with Mike’s public key and sends it. Mike receives an encrypted message and decrypts it with his private key.<\/p>\n\n\n\n

How encrypted email looks like?<\/h2>\n\n\n\n

On the Picture 1<\/em> below you can see how encrypted email sent to Gmail looks like. This email consist of two parts – one part is not encrypted and another part is encrypted. One cannot know the content of encrypted part without private key of the intended recipient.<\/p>\n\n\n\n

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