feat: Bring over the cryptography API from moxplatform

lib/moxxy_native.dart

@@ -1,2 +1,3 @@
+export 'pigeon/cryptography.g.dart';
 export 'pigeon/notifications.g.dart';
 export 'pigeon/picker.g.dart';

lib/pigeon/cryptography.g.dart

@@ -0,0 +1,141 @@
+// Autogenerated from Pigeon (v11.0.1), do not edit directly.
+// See also: https://pub.dev/packages/pigeon
+// ignore_for_file: public_member_api_docs, non_constant_identifier_names, avoid_as, unused_import, unnecessary_parenthesis, prefer_null_aware_operators, omit_local_variable_types, unused_shown_name, unnecessary_import
+
+import 'dart:async';
+import 'dart:typed_data' show Float64List, Int32List, Int64List, Uint8List;
+
+import 'package:flutter/foundation.dart' show ReadBuffer, WriteBuffer;
+import 'package:flutter/services.dart';
+
+enum CipherAlgorithm {
+  aes128GcmNoPadding,
+  aes256GcmNoPadding,
+  aes256CbcPkcs7,
+}
+
+class CryptographyResult {
+  CryptographyResult({
+    required this.plaintextHash,
+    required this.ciphertextHash,
+  });
+
+  Uint8List plaintextHash;
+
+  Uint8List ciphertextHash;
+
+  Object encode() {
+    return <Object?>[
+      plaintextHash,
+      ciphertextHash,
+    ];
+  }
+
+  static CryptographyResult decode(Object result) {
+    result as List<Object?>;
+    return CryptographyResult(
+      plaintextHash: result[0]! as Uint8List,
+      ciphertextHash: result[1]! as Uint8List,
+    );
+  }
+}
+
+class _MoxxyCryptographyApiCodec extends StandardMessageCodec {
+  const _MoxxyCryptographyApiCodec();
+  @override
+  void writeValue(WriteBuffer buffer, Object? value) {
+    if (value is CryptographyResult) {
+      buffer.putUint8(128);
+      writeValue(buffer, value.encode());
+    } else {
+      super.writeValue(buffer, value);
+    }
+  }
+
+  @override
+  Object? readValueOfType(int type, ReadBuffer buffer) {
+    switch (type) {
+      case 128: 
+        return CryptographyResult.decode(readValue(buffer)!);
+      default:
+        return super.readValueOfType(type, buffer);
+    }
+  }
+}
+
+class MoxxyCryptographyApi {
+  /// Constructor for [MoxxyCryptographyApi].  The [binaryMessenger] named argument is
+  /// available for dependency injection.  If it is left null, the default
+  /// BinaryMessenger will be used which routes to the host platform.
+  MoxxyCryptographyApi({BinaryMessenger? binaryMessenger})
+      : _binaryMessenger = binaryMessenger;
+  final BinaryMessenger? _binaryMessenger;
+
+  static const MessageCodec<Object?> codec = _MoxxyCryptographyApiCodec();
+
+  Future<CryptographyResult?> encryptFile(String arg_sourcePath, String arg_destPath, Uint8List arg_key, Uint8List arg_iv, CipherAlgorithm arg_algorithm, String arg_hashSpec) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.moxxy_native.MoxxyCryptographyApi.encryptFile', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_sourcePath, arg_destPath, arg_key, arg_iv, arg_algorithm.index, arg_hashSpec]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return (replyList[0] as CryptographyResult?);
+    }
+  }
+
+  Future<CryptographyResult?> decryptFile(String arg_sourcePath, String arg_destPath, Uint8List arg_key, Uint8List arg_iv, CipherAlgorithm arg_algorithm, String arg_hashSpec) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.moxxy_native.MoxxyCryptographyApi.decryptFile', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_sourcePath, arg_destPath, arg_key, arg_iv, arg_algorithm.index, arg_hashSpec]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return (replyList[0] as CryptographyResult?);
+    }
+  }
+
+  Future<Uint8List?> hashFile(String arg_sourcePath, String arg_hashSpec) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.moxxy_native.MoxxyCryptographyApi.hashFile', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_sourcePath, arg_hashSpec]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return (replyList[0] as Uint8List?);
+    }
+  }
+}