Questions tagged [offline]

11 questions
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1 answer

Sign a document as created with an authorized software build

I'm creating some software that essentially enforces a specific process for creating specific documents, which protects them from being challenged later. Afterwards, the file is signed with the user's key (USB token not related to the software).…
ZOMVID-21
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Best practice to encrypt data on smartphone

What is best practice for the encryption of offline application data? I have an application where multiple users can log in. The user gets data from an internet API, where the user authenticates. I want to store some of the data, for example, a list…
Donatic
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1 answer

What are the security best practices to implement offline login of android apps?

My client has an android application requirement. The users of the application are workers who might have to work at places where internet connectivity is unavailable. So an offline login feature is necessary. At the moment, it is implemented by…
Anonymous Platypus
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How to verify OTP codes offline?

I have a use case to generate one time codes, and need to, in some cases, verify them offline. A use case: On arriving at customers door, the delivery agent needs to verify that they dropped off a letter. Before arriving, they send out a SMS to the…
ohboy21
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How to uses FIDO2 hmac-secret extension for offline authentication?

How hmac-secret extension defined in the CTAP2 Specification is used to help implement offline authentication with an authenticator. Is there any other specification that says how to do this? From the exploration around, it looks like Microsoft is…
1
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1 answer

Standard Protocols or secure mechanism to authenticate users offline

We have a use case wherein a mobile app that can be used by multiple users on the same device needs to authenticate the users in some offline scenarios. We were using Password grant as in OAuth2 to check the password when the user is online and…
0
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2 answers

Offline downloading: Can the website owner know that I’ve saved the page as webarchive while I’m not connected to the internet?

I noticed I can save a webpage as .webarchive file from my iPhone Safari while I’m offline. Basically what I did was to open the website, log in, go to the specific page, then when it’s finished loading, I turned off my internet connection. Then…
Tocchi
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How secure is R and RStudio?

I work at a clinic where we need to pseudonymize patient data. I wrote a small app for this using R (RStudio). R will be installed on computers with access to internet but my idea is to use R offline, i.e. fully blocking it with a firewall in order…
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How to show someone that offline Windows app I'll send is not malicious?

I want to send someone an offline app (but would be streamed online by other app like OBS) to use, while wanting to show him that his PC won't be infected (or similar) by that app. App will rely on some external libraries (seemingly all from trusted…
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1 answer

Debating between architecture options for offline updating of Linux machines in a vertically segregated network

My coworker and I are discussing the pros/cons between two potential architecture options, and I would like to gather feedback on which option is better and why. First, a description of the environment: We have a vertically segmented network into…
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1 answer

General security of offline databases (like SQLite)

I'm writing a small task management program in Java (not for mobile devices btw), and part of it was kind of a 'data service' to encapsulate and reuse database related code - such as connecting to different DBs, CRUD actions and stuff. The program…