What is PGP or Pretty Good Privacy?

by | Feb 13, 2017 | Data Breaches and Prevention, Data Security, Email Security, Encryption, End Point Protection, PGP and GPG, Privacy

What is PGP

PGP stands for Pretty Good Privacy. It was created by Phil Zimmermann in 1991. PGP is a data encryption and decryption program that can be used for signing, encryption, and decryption of texts, emails, files, directories, or even whole disks (What is Full Disk Encryption?).

PGP uses public-key cryptography (What is public-key cryptography?). A user first generates a key pair consisting of a private and a public key. The private key is kept secret to the user, while the public key may be shared with someone who wants to communicate with the user.

When the user wants to share any message with a recipient, the user encrypts the message with the recipient’s public key and sends it across. The recipient decrypts it with her private key and retrieves the message.

On the other hand, signing a text certifies and timestamps a document. Before sending a document to the recipient, the user can sign the document using her private key. After receiving the document, the recipient can verify the signature using the public key of the signer. If the verification fails …

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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