CrossDrop
protocol
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CrossDrop
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LocalSend: Open-source, cross-platform file sharing to nearby devices
> I wish quick share (né nearby share) was available on linux (even if via chrome).
I made NearDrop, which is a macOS implementation of Nearby Share: https://github.com/grishka/NearDrop
And of course, someone tried to reimplement it for other OSes: https://github.com/PlutoHDDev/CrossDrop
protocol
- LocalSend: Open-source, cross-platform file sharing to nearby devices
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Localsend: Open-Source Airdrop Alternative
Not the fort-knox implementation it claims on the tin.
'LocalSend uses a secure communication protocol that allows devices to communicate with each other using a REST API. All data is sent securely over HTTPS, and the TLS/SSL certificate is generated on the fly on each device, ensuring maximum security.'
How do they achieve maximum security while generating X.509 certs on device?
Let's look; 'https://github.com/localsend/protocol#2-fingerprint'
'When encryption is on (HTTPS), then the fingerprint is the SHA-256 hash of the certificate'
Confusingly there is a HTTP non encrypted mode, and the docs claim the fingerprint only used to avoid discovery collisions.
Out-of-band [visual comparison / QR code scanning step] sharing of fingerprints COULD be acceptable to prevent 'man in the middle' attacks, however the documentation doesn't seem to indicate that this detail is surfaced or shared with the user.