What Is PGP?

PGP stands for pretty good privacy. It is an encryption system for sending and managing encrypted emails and files. Encrypting the data and content of emails makes this method of communication more private, which is why those dealing with sensitive information typically use PGP. You can also use PGP to decrypt emails, ensuring only the recipient can interpret the message sent directly to them. 

PGP combines public and private features of cryptosystems, enabling users to send and receive encrypted emails. First, PGP generates a random one-time-use session key. After generating the session key, the recipient's public key encrypts it. As the public key connects to that user’s identity, other users can send them messages with that key. The sender will send their encrypted PGP key to the recipient, and the recipient can then decrypt the message using their private key. 

PGP protects sensitive data by combining public, private, and random keys. It builds on standard encryption forms using symmetric and public key encryption. The random key generation tactic prevents different users from using the same key and potentially accessing information not intended for them. 

Uses of PGP encryption

People often use PGP to send and receive confidential messages or data. However, the following are some additional use cases: 

• Create digital signatures

• To confirm that an email has reached the intended recipient

• To authenticate messages

• Provide a sense of security and comfort when sending messages and data 

Who works with PGPs?

If you work in the information technology field as an IT technician or computer security analyst, you are responsible for protecting sensitive information using firewalls or data encryption. You may develop security standards for your organisation, including assisting employees with installing and using PGP, allowing them to transmit essential information securely. 

Related terms

• IT project manager

• Malware

• Firewall

• ITIL

• Cybersecurity

• Cryptographer

Get started in IT support.

Pretty good privacy (PGP) makes it possible to send, receive, and manage encrypted emails and files, protecting sensitive data. Individuals and organisations use PGP  to send and receive confidential messages or data.

Continue learning about PGP and other IT-related technologies with the Google IT Support Professional Certificate. This beginner-friendly course can help you learn how to install various coding programs, develop customer support skills, and identify any issues with the technological programs. Upon completion, you’ll also gain exclusive access to career resources like CV review, interview prep, and more.