Based on this, the OpenPGP standard was created in 1997, enabling anyone to write implementations that are compatible and interoperable with other software that uses OpenPGP. Invented by software engineer Phil Zimmermann as freeware in 1991, PGP encryption later became proprietary software and is now owned by Symantec.īut Zimmermann also shared the message format used by PGP with the wider community. OpenPGP is an open standard of PGP encryption that’s free for public use. At Proton, we not only use OpenPGP, we also help to maintain and develop it. Third, PGP evolved into OpenPGP (new window), an open standard that the cryptographic community is constantly improving. This increases security and ease of use because you can send an encrypted message to someone without sharing a secret key in advance. Second, PGP uses both symmetric-key (new window) and public-key (new window) encryption, as we explain below. That’s why privacy-focused email providers like Proton Mail use PGP for their end-to-end encryption. Send a message using PGP, and no one can intercept and read it in transit. Since then, as cryptography has advanced, several factors have helped PGP become one of the main standards for email encryption.įirst, PGP is now highly secure if implemented correctly with strong encryption. When PGP was created in the 1990s, the publicly available cryptography was limited, and PGP gave you privacy that was “pretty good”. By providing a way to digitally “sign” encrypted emails, PGP lets you check that the message is from the person claiming to be the sender and verify that it wasn’t tampered with in transit. Only the recipient has the key to convert the text back into a readable message on their device. When you send an email using PGP, the message is converted into unreadable ciphertext (new window) on your device before it passes over the internet. It’s commonly used to encrypt emails, but it can also be used to encrypt files and other data. PGP is an encryption method that lets you communicate privately online. What is PGP encryption? What does PGP stand for? What is OpenPGP? How does PGP work? Public-key encryption Public-key and symmetric encryption Why does PGP use two encryption methods? Digital signatures Address verification OpenPGP CA How secure is PGP encryption? How to use PGP encryption Proton Mail Third-party PGP plugins Other PGP clients Easy PGP email encryption What is PGP encryption? We explain all you need to know about PGP and how to easily secure your communications with this robust encryption method. Over the years, thousands around the world have turned to PGP to protect themselves online, from whistleblowers to ordinary people defending their right to privacy. When Edward Snowden secretly communicated (new window) his surveillance revelations to journalists in 2013, he used PGP encryption. Learn what PGP encryption is, how it works, and the simplest way to secure your emails with PGP. Last update on JPublished on August 8, 2019
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