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0 pointsnix235y ago0 comments

>One really dangerous thing about it is that once you send something it just won't disappear.

That thing is called Internet..Information never goes away, not even in the real world.

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5 comments · 1 top-level

viraptor5y ago· 4 in thread

It's not that black and white. Some communicators for example delete messages after a specified time and don't archive by default. It's not perfect, and it's not supposed to be. But it still raises the bar a bit - if your peer is not compromised, you can at least hope the history goes away.

Same could be done with "permanent" message by rotating shared encryption keys and discarding old ones for example, so you can build something with better privacy on top.

nix23OP5y ago

>It's not that black and white. Some communicators for example delete messages after a specified time and don't archive by default. It's not perfect, and it's not supposed to be

If something is not secure you can forget it by default, there is NO information system than can securely delete and protect it's delivered end user information, no DRM no Snapchat nothing, the consumed and delivered message can always be seen.

fao_5y ago

Scrub the information and rotate encryption keys with enforced deletion.

Sure, this would not get around a dedicated attacker, or screenshotting, but that's the same as printed information, or information transfer over radio. Someone can always listen in if they have enough resources and time. Even closed networks can be infiltrated with enough persistence.

viraptor5y ago

First, that's why I wrote "hope" and mentioned it's not perfect. But "the consumed and delivered message can always be seen" is just incorrect. IF both sides destroy either the message or the encryption keys for it, then no, it can't be seen. (Just the metadata about it being sent)

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qubex5y ago

Isn’t deleting expired encryption keys how Snapchats are ‘disappeared’?

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