How to implement TOTP authentication that is compatible with java and objective-c

Asked Feb 28 '19 at 16:37

Active Feb 28 '19 at 22:52

Viewed 1,042 times

I have a problem with TOTP authentification.

My server (java) generates a secret key and transmits it to my android and ios applications. At the time of authentication, my mobile application runs the TOTP algorithm, taking the secret key as parameter and sending the result to the server. The server also takes this secret key and executes the TOTP algorithm and checks if the result is identical. My current problem is that the java-side algorithm returns a different result from the iOS-rated algorithm (objective-c). Do you have an algorithm running on both sides or a solution to be able to have an identical result please?

edited Feb 28 '19 at 22:52

Steve Vinoski

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asked Feb 28 '19 at 16:37

Tuncay mzd

Share some code or names of libraries please. – ThE uSeFuL Feb 28 '19 at 17:40
I use this implementation : "https://github.com/shashankvaibhav/TOTPImplementationIOS/tree/master/TOTP/Classes" but I can not find a compatible algo in java. – Tuncay mzd Mar 01 '19 at 09:08
I changed the implementation and that solved my problem : https://github.com/google/google-authenticator/tree/master/mobile/ios – Tuncay mzd Mar 06 '19 at 13:34
What is the library you used for java server side – Saeed Sep 17 '22 at 22:23

How to implement TOTP authentication that is compatible with java and objective-c

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