Android

17611 readers

224 users here now

The new home of /r/Android on Lemmy and the Fediverse!

Android news, reviews, tips, and discussions about rooting, tutorials, and apps.

💡Content Philosophy:

Content which benefits the community (news, rumours, and discussions) is generally allowed and is valued over content which benefits only the individual (technical questions, help buying/selling, rants, self-promotion, etc.) which will be removed if it's in violation of the rules.

Support, technical, or app related questions belong in: [email protected]

For fresh communities, lemmy apps, and instance updates: [email protected]

💬Matrix Chat

💬Telegram channels / chats

📰Our communities below

Rules

Stay on topic: All posts should be related to the Android OS or ecosystem.
No support questions, recommendation requests, rants, or bug reports: Posts must benefit the community rather than the individual. Please post to [email protected].
Describe images/videos, no memes: Please include a text description when sharing images or videos. Post memes to [email protected].
No self-promotion spam: Active community members can post their apps if they answer any questions in the comments. Please do not post links to your own website, YouTube, blog content, or communities.
No reposts or rehosted content: Share only the original source of an article, unless it's not available in English or requires logging in (like Twitter). Avoid reposting the same topic from other sources.
No editorializing titles: You can add the author or website's name if helpful, but keep article titles unchanged.
No piracy or unverified APKs: Do not share links or direct people to pirated content or unverified APKs, which may contain malicious code.
No unauthorized polls, bots, or giveaways: Do not create polls, use bots, or organize giveaways without first contacting mods for approval.
No offensive or low-effort content: Don't post offensive or unhelpful content. Keep it civil and friendly!
No affiliate links: Posting affiliate links is not allowed.

Quick Links

Our Communities

Lemmy App List

See thread

Chat and More

founded 1 year ago

MODERATORS

[email protected]

Sources: Pixel 8 Pro will keep physical SIM card and add Night Sight for video (9to5google.com)

submitted 1 year ago by [email protected] to c/[email protected]

6 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 1 year ago

Seems like a huge headache with stolen/lost phones, wonder how they handle revokation..

Right maybe should have clarified that. The authentication is facilitated by the trusted middle party aka phone company.

When you log in using this service, you tell using service your phone number. Well their contacted authentication handler (usually one of the phone operators), they forward the request to your operator, who knows to forward it to the phone (as I understand as a network service SMS, like how operators settings updates also get send to the SIM and phone), this service message is handed by the phone cellular interface to the SIM. SIM applet notices "oh this is authentication request". It displays the session ID of authentication (generated at the original authentication session and displayed there also) and then asks to enter security code to approve (or decline the request)

As such revocation is two fold. First your operator will list the certificate/key invalid. Secondly, since operator is handling the message passing anyway, they know to refuse to send the authentication requests in the first place to the compromised SIM. since as the SIM, that also defines where to send the requests. It is both the independent crypto validation, but also the cell network subscriber identity. Compromised sim stops getting any requests, since it is shutout from cellular connection. Can't make calls, can't send and receive texts, since the sim isn't anymore tied to valid subscriber contact.

Plus with crypto system there is always the option of official public revocation server. Which kind of system is what the national ID smart card system uses. Anyone accepting identifying by those signatures gets told "the official key/certificate/revocation server is this one. Regularly check it for listed revocations by the root trust authority"