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Cake day: August 20th, 2024

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  • Yes, any time you can store and recover encrypted cloud archives across devices, without needing to transfer keys between devices, it implies that there is a key archive somewhere in the cloud. Even Signal struggles to get this both user friendly and properly secure without compromising forward secrecy. I believe they still actually make you explicitly do a local key transfer to populate a new device, even though they have cloud archives now. Whatsapp doesn’t do that. And the app also clearly leaks some amount of unencrypted data anyway, archives or not.


















  • Just to add that proper mesh systems are distinct from extenders as they will use separate mesh channels for back haul. They also have the “travel AP” things which act as extenders but form a new network on a different channel. You can actually do this with many Android phones as well.