Problem making JWT using RSA

[joaoritter]

Bad State: AES engine not initialised

I'm making a JWT using RSA like so:

` final rnd = FortunaRandom();

final rsapars = RSAKeyGeneratorParameters(BigInt.parse("65537"), 2048, 12);
final params = ParametersWithRandom(rsapars, rnd);

final k = RSAKeyGenerator();

k.init(params);

final keyPair = k.generateKeyPair();

final header = _header;
final payload = _payload;
final cipher = RSAEngine()
  ..init(true, PrivateKeyParameter(keyPair.privateKey));

final content = header + "." + payload;

final cipherText = cipher.process(Uint8List.fromList(content.codeUnits));

final signature = String.fromCharCodes(cipherText);

final jwtToken = content + "." + signature;
return jwtToken;

`

What am I missing?? Thanks in advance!

[joaoritter]

Troubleshooting: First problem seems to be with FortunaRandom as the random number input.

[joaoritter]

This article had everything I needed! https://morioh.com/p/6f069be5a287/asymmetric-key-generation-in-flutter

[joaoritter]

original source => https://medium.com/flutter-community/asymmetric-key-generation-in-flutter-ad2b912f3309