How to create a shared secret using Scalarmult? about libsodium_dart_bindings HOT 6 CLOSED

My bad, looks like I have a "tunnel vision"- I was always thinking about obtaining "Sodium" instance, and not "SodiumSumo".
Sorry for that, now I get it where I was wrong. And thanks a lot for your help!

from libsodium_dart_bindings.

Please refer to the official libsodium documentation on how to use certain APIs.

This library mimics those APIs, so all you need to do is follow the README for sodium (or sodium_libs when using flutter) and then translate the original C-Calls to dart by replacing _ with . and camelCasing. There is also the dart documentation

For the simple example of using crypto_scalarmult, it would look something like this:

final sodium = // See READMEs on how to obtain an instance. You will need the sumo variant, as documented in the README
final secretKey = // obtain secret key
final publicKey = // obtain public key
final result = sodium.crypto.scalarmult(secretKey, publicKey);

You can also have a look at the scalarmult integration test case for a full example: https://github.com/Skycoder42/libsodium_dart_bindings/blob/main/packages/sodium/test/integration/cases/scalarmult_test_case.dart

from libsodium_dart_bindings.

Thanks for the quick reply!
I've tried different approaches, but the sculurmult is
not accessible from crypto, box or secretBox.
Pls check the screenshot

from libsodium_dart_bindings.

As stated before, you need to use the sumo variant of the library. Change your initialization to

final sod = await SodiumSumoInit.init();

from libsodium_dart_bindings.

Tried with SodiumSumo as well, not working.

from libsodium_dart_bindings.

Well, if you cast it to a Sodium instance, of cause it won't work. Change sd.Sodium to final and dart will auto detect the correct type. Optionally you can set the type to sd.SodiumSumo to make it explicit. Again, simply check the documentation of these methods!

from libsodium_dart_bindings.