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> I fundamentally distrust any program which claims E2E encryption and is capable of recovering my chat history onto a new device. I would expect a Signal impl
by JoshTriplett 6y ago
> I fundamentally distrust any program which claims E2E encryption and is capable of recovering my chat history onto a new device.
I would expect a Signal implementation of this to allow recovering chat history if you restore a backup onto the new device and if you re-enter your PIN.
- freeone3000 6y agoYour pin is not your key, even through a KDF. That would allow guessing with only 10**4 guesses. Signal exports an unencrypted backup to a formatted text file, which can then be imported by another signal instance.
- JoshTriplett 6y agoI don't mean a network backup. I mean a device-to-device data transfer, for which the device passphrase and the Signal PIN together should be sufficient. (Also, your Signal PIN can be an alphanumeric passphrase.)