4 ms·
The Contacts permission is completely optional, and contact information is never stored: https://signal.org/blog/private-contact-discovery/ https://signal.org/b
by jlund 8y ago
The Contacts permission is completely optional, and contact information is never stored: https://signal.org/blog/private-contact-discovery/ https://signal.org/blog/private-contact-discovery/
- ppjet6 8y agoThis seems like smoke and mirrors to me: Traditionally, in Signal that process has looked like: The client calculates the truncated SHA256 hash of each phone number in the device’s address book. The client transmits those truncated hashes to the service. The service does a lookup from a set of hashed registered users. The service returns the intersection of registered users. The phone number space is really not this big.
- detaro 8y agoThey acknowledge that in literally the next paragraph, and the entire post is about how they improved on that old state of things. How is that "smoke and mirrors"?