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https://blog.beeper.com/p/how-beeper-mini-works https://blog.beeper.com/p/how-beeper-mini-works > SMS access is used to send an SMS text message from your numb
by cbsks 3y ago
https://blog.beeper.com/p/how-beeper-mini-works https://blog.beeper.com/p/how-beeper-mini-works
> SMS access is used to send an SMS text message from your number to Apple’s “Gateway” service. The gateway sends a response via SMS, and the contents from that SMS response are sent to Apple to register your phone number as a blue bubble. Your SMS chat history is also used to determine if any of your recent SMS chats were with people who have iPhones. If so, these chats are shown in the inbox.
Does this mean that Apple is sent the phone number of every person you have ever sent or received an SMS with?
Very cool program, by the way. It’s refreshing to see a company take privacy seriously.
- asadm 3y agoseems likely? or atleast a hash of it.
- cbsks 3y agoA hash of a phone number would be trivial to brute force.
- aqfamnzc 3y agoHmm, could it be salted somehow?
- freedomben 3y agoNot sure why downvoted, this is a reasonable question. No, even a gigantic salt wouldn't help because the input data is too low entropy - only 10 digits that are 0-9. Salts are only helpful to prevent rainbow table attacks by making the size of the pre-computed output space too large to fit on a drive. The salt has to be stored in plain text in order for the verifying algorithm to compute the hash of the input and compare it, so if you have the hash you also have the salt and can brute-force old school and crack all of them in short order.
- aqfamnzc 3y agoThat makes sense. Thanks.
- erohead 3y agoBeeper Mini checks only the last 50 contacts and determines if any are on iMessage.
- cbsks 3y agoThanks for answering. Any plans to make the check optional? Some people may not want to send that info to Apple.