MSC4101: Hashes for unencrypted media #4101
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turt2live
changed the title
turt2live
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ara4n
reviewed
Feb 20, 2024
| to clients. Clients will believe these changes in most cases because they do not have the capability | ||
| to validate the DAG itself. | ||
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| This proposal does *not* attempt to fix either tampering issue for unencrypted media. Encrypting events |
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I'm surprised we're not mentioning MSC #2757 (https://github.com/Sorunome/matrix-doc/blob/soru/sign-events/proposals/2757-sign-events.md ) here, which /does/ try to fix the tampering issue for unencrypted media (and is kinda the sister-proposal to this, but for events rather than media)
kegsay
reviewed
Jan 13, 2025
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| ## Alternatives | ||
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| No alternatives identified. |
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Can't the hash just go into the MXC URI e.g "thumbnail_url": "mxc://example.org/$hash"?
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If we have an MSC3911 world, no. The media ID would need to be unique.
We'd also find it harder to update or change the algorithm in future, but not impossible.
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In line with matrix-org/matrix-spec#1700, the following disclosure applies:
I am Director of Standards Development at The Matrix.org Foundation C.I.C., Matrix Spec Core Team (SCT) member, employed by Element, and operate the t2bot.io service. This proposal is written and published as a member of the SCT working in the area of media authentication and linking.
Implementation requirements: