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# Notes on OpenPGP
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2023-09-14 21:30:43 +02:00
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2023-09-15 11:14:06 +02:00
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An introduction to the concepts of OpenPGP, aimed mainly at software
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developers who are looking to use OpenPGP functionality in their projects.
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2023-09-14 21:30:43 +02:00
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2023-09-15 11:14:06 +02:00
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This document describes
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[OpenPGP version 6](https://datatracker.ietf.org/doc/draft-ietf-openpgp-crypto-refresh/),
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with occasional remarks about differences to earlier versions.
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This text is *not* intended as a guide for end-users who use OpenPGP-related software.
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## What is OpenPGP?
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OpenPGP is an open standard for cryptographic operations.
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It has grown out of the
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["Pretty Good Privacy (PGP)"](https://en.wikipedia.org/wiki/Pretty_Good_Privacy)
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software.
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OpenPGP is an open standard, there are many widely used
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(and [interoperable](https://tests.sequoia-pgp.org/)) implementations.
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