It's because the former employ user-owned identifiers that are part of a social network owned by you - your address book.
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the set isn't always guaranteed to be >N where N is a deep enough set of arbitrary users
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Well, yeah, but you can adjust truncation accordingly.
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It could. But then you need another phase to eliminate those collisions. And that has to involve phones.
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@matthew_d_green these are phone numbers ~2^32 possible in US You'd have to truncate to much smaller than this to get collision@taviso - 3 more replies
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Rather than all kinds of speculation about what the security properties *might* be maybe
@whispersystems tells us? -
Hard to talk technical on twitter. Maybe jump on the community forums or mailing list? Happy to discuss.
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