[OASIS Issue Tracker] (OFFICE-3940) Add OpenPGP-based XML encryption

Thorsten Behrens created OFFICE-3940:
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             Summary: Add OpenPGP-based XML encryption
                 Key: OFFICE-3940
                 URL: https://issues.oasis-open.org/browse/OFFICE-3940
             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
          Issue Type: New Feature
          Components: Packaging
    Affects Versions: ODF 1.3
            Reporter: Thorsten Behrens


Currently ODF supports password-based encryption, using a user-provided string of characters to encrypt an AES session encryption key.

That is not ideal in the context of sharing documents securely with wider audiences, since one always needs a secure sidechannel to distribute the passphrase.

This proposal builds on top of https://www.w3.org/TR/2002/REC-xmlenc-core-20021210/ for XML encryption, and essentially extends the ODF manifest markup with a few nodes to denote OpenPGP key material plus transport encryption for the session key



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