In spite of OpenPGP’s value, the one thing that has stymied its widespread adoption is ease-of-use.
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Many software companies will include a PGP digital signature along with their software’s installer that customers can check to verify the integrity of a download, and help ensure it hasn’t been tampered with or compromised to include malicious code. In addition, OpenPGP also helps individuals to verify the authenticity and integrity of a message or encrypted file thanks to the included digital signature.
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When you first install an OpenPGP client, you’re prompted to create a key-pair set and upload your public key to key servers, allowing people to search for it by your name or associated email address. With public-key cryptography, once data is encrypted with a public key, only the corresponding private key can decrypt it. This kind of cryptography uses a public/private key-pair to encrypt and decrypt data. How It WorksĪt its core, OpenPGP is a public-key cryptography system. It is just these kind of situations that makes OpenPGP an important tool for anyone concerned with privacy and security. While this is of little concern when sharing a cute pet video, or your favorite new recipe, the stakes become much higher when it’s family members discussing financial issues or health concerns, an executive discussing an internal corporate policy, a programmer sharing source code with another developer, or any number of legitimate situations where it’s important to be able to communicate and share information, or even files, in a secure and private manner.
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