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GPGTools is currently free, but plans to charge a very modest fee for its email plug-in at some point to help support development costs. The EFF has very nice step-by-step instructions for installing GPGTools to allow it to be used directly with either Apple Mail or Mozilla Thunderbird for email the tools are also available via the application Services menu wherever you can manipulate or select text. (PGP is a trademark, and GPG coined to get around it, but you’ll often see PGP used generically to refer to this method of using public keys.)
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It lets you build a directory of other people’s public keys, while also letting you carry out encryption, decryption, signing, and verifying.
#Best pgp software for mac free
PGP is available for the Mac via GPGTools, a version of the free software GPG (GNU Privacy Guard). ( How PGP works is described in Part 1.)Ĭomposing a message in Mail to a recipient whose key is in your local GPG Keychain, the lock icon can be clicked to encrypt the message when sent. The service’s messaging and calling options received scores of 7 out of 7 in the Electronic Frontier Foundation’s secure messaging scorecard.īut most of us don’t live in a walled garden, and one of the company’s founders, Phil Zimmermann, is responsible nearly 25 years ago for turning public-key cryptography into what he called PGP, for Pretty Good Privacy. It starts at $10 per month for unlimited text, calls, video chat, and file transfers among its users. Silent Circle has one of the best options that embeds public-key cryptography, if you can convince all the people with whom you need to communicate to opt in. The easiest way to solve both problems is to use an end-to-end proprietary ecosystem, but that gets us back, more or less, to iMessage or something similar.