simple.dart

import 'dart:typed_data';

import 'package:webpush_encryption/webpush_encryption.dart';

Future<void> main(List<String> arguments) async {
  var keyz = await WebPushKeySet.newKeyPair();
  keyz.serialize; // store this to shared preferences or whatever storage mechanism you want to use

  print(keyz.publicKey.p256dh); //send these to the application server
  print(keyz.publicKey.auth); // both are already encoded to base64Url

//then you can import it back into an object  (this is a different set of keys to demonstrate)
  keyz = await WebPushKeySet.deserialize(
      "BGviCUiE9bL6HqxXZRLKb3pmHYGq24acYDoE-Hy2aZM9h2gIx0jrQTWh2ksIaFegv6yUQLkpbV7984w0IpvlT-Y=+AAAAAAAAAAAAAAAAAAAAAA==+MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQga-gpVIxZJHJ_uUx9ON45Lm5Owp5qbM3o7u0p0qrmoZqhRANCAARr4glIhPWy-h6sV2USym96Zh2BqtuGnGA6BPh8tmmTPYdoCMdI60E1odpLCGhXoL-slEC5KW1e_fOMNCKb5U_m");

  var decrypted = await WebPush().decrypt(
    keyz, // you private keys
    myPresetMessage, // the message bytes that were received from the server
  );

//decrypted contains bytes, but you can access the message as a string if you'd like using `String.fromCharCodes`
  print(String.fromCharCodes(decrypted));
}

// let's pretend the server received this request body
Uint8List myPresetMessage = Uint8List.fromList([
  27,
  100,
  138,
  108,
  205,
  174,
  43,
  77,
  156,
  207,
  31,
  166,
  34,
  94,
  196,
  48,
  0,
  0,
  16,
  0,
  65,
  4,
  212,
  131,
  148,
  232,
  78,
  42,
  128,
  199,
  141,
  210,
  117,
  62,
  163,
  104,
  1,
  82,
  175,
  199,
  199,
  62,
  174,
  165,
  237,
  129,
  19,
  67,
  135,
  170,
  33,
  37,
  58,
  240,
  209,
  32,
  140,
  195,
  249,
  226,
  138,
  20,
  113,
  23,
  0,
  24,
  104,
  194,
  252,
  142,
  252,
  92,
  91,
  175,
  51,
  65,
  39,
  65,
  117,
  138,
  83,
  17,
  97,
  240,
  69,
  97,
  183,
  180,
  169,
  135,
  138,
  31,
  121,
  23,
  221,
  244,
  254,
  125,
  253,
  236,
  41,
  79,
  36,
  233,
  227
]);