createSession method

bool createSession(Map<String, String> params)

Creates _sharedSecret using _dAppSecretKey and phantom_encryption_public_key.

Once _sharedSecret is created, it can be used to encrypt and decrypt data. Here we decrypt the data using _sharedSecret and nonce to get _sessionToken and userPublicKey. Refer to (Encryption)https://docs.phantom.app/integrating/deeplinks-ios-and-android/encryption to learn how apps can decrypt data using a shared secret. Encrypted bytes are encoded in base58.

Implementation

bool createSession(Map<String, String> params) {
  try {
    createSharedSecret(Uint8List.fromList(
        base58decode(params["phantom_encryption_public_key"]!)));
    var dataDecrypted =
        decryptPayload(data: params["data"]!, nonce: params["nonce"]!);
    _sessionToken = dataDecrypted["session"];
    userPublicKey = dataDecrypted["public_key"];
  } catch (e) {
    return false;
  }
  return true;
}