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Questions tagged [ios]

iOS is Apple's operating system for the iPhone, iPad and iPod Touch.

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1 vote
0 answers
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Secure two-factor authentication app for iOS

I'm working on an open source iOS-native (both UX- and implementation-wise) 2FA app. Two of primary goals for the project are ensuring security and simple backups. Addressing these two areas is the ...
Greg Navis's user avatar
3 votes
2 answers
83 views

Can I prove my app uses randomness right way?

We are developing an iOS app which employs Shamir Secret Sharing algorithm. We made all possible steps users can trust us. We can't remember their secrets nor we can save encoded fragments. But they ...
tomikk's user avatar
  • 31
1 vote
1 answer
1k views

Why does Apple use One-Pass Diffie-Hellman for file encryption?

I was reading the iOS Security Guide (snapshot) and stumbled upon the following file protection class on page 15: (NSFileProtectionCompleteUnlessOpen): Some files may need to be written while the ...
edigaryev's user avatar
  • 111
3 votes
1 answer
356 views

How does authentication work for SSH login with a public key?

For SSH public key authentication in Cisco IOS it is sufficient to add RSA public key hash instead of content of that public key. For example: ...
sharlino's user avatar
1 vote
0 answers
369 views

Which cryptographic operations can be optimized with a GPU? When shouldn't it be done?

I'm under the impression that GPUs are only used to optimize some (not all) of a given cryptographic operation. Furthermore, I've only seen this GPU optimization done in Bitcoin. This observation ...
makerofthings7's user avatar