Add API to use AesCrypt to encrypt and decrypt data directly

lib/utils/crypto_util.dart

@@ -1,10 +1,14 @@
 import 'dart:typed_data';
 
+import 'dart:io' as io;
 import 'package:aes_crypt/aes_crypt.dart';
 import 'package:computer/computer.dart';
 import 'package:encrypt/encrypt.dart';
 import 'dart:convert';
 
+import 'package:photos/core/configuration.dart';
+import 'package:uuid/uuid.dart';
+
 class CryptoUtil {
   static String getBase64EncodedSecureRandomString({int length = 32}) {
     return SecureRandom(length).base64;
@@ -48,6 +52,17 @@ class CryptoUtil {
     return Computer().compute(runEncryptDataToFile, param: args);
   }
 
+  static Future<String> encryptDataToData(Uint8List source, String key) async {
+    final destinationPath =
+        Configuration.instance.getTempDirectory() + Uuid().v4();
+    return encryptDataToFile(source, destinationPath, key).then((value) {
+      final file = io.File(destinationPath);
+      final data = file.readAsStringSync(encoding: utf8);
+      file.deleteSync();
+      return data;
+    });
+  }
+
   static Future<void> decryptFileToFile(
       String sourcePath, String destinationPath, String key) async {
     final args = Map<String, String>();
@@ -63,6 +78,16 @@ class CryptoUtil {
     args["source"] = sourcePath;
     return Computer().compute(runDecryptFileToData, param: args);
   }
+
+  static Future<String> decryptDataToData(String source, String key) {
+    final sourcePath = Configuration.instance.getTempDirectory() + Uuid().v4();
+    final file = io.File(sourcePath);
+    file.writeAsStringSync(source);
+    return decryptFileToData(sourcePath, key).then((value) {
+      file.deleteSync();
+      return utf8.decode(value);
+    });
+  }
 }
 
 Future<String> runEncryptFileToFile(Map<String, String> args) {

pubspec.lock

@@ -764,12 +764,12 @@ packages:
     source: hosted
     version: "3.4.2"
   uuid:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: uuid
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0"
+    version: "2.2.2"
   vector_math:
     dependency: transitive
     description:

pubspec.yaml

@@ -64,6 +64,7 @@ dependencies:
   uni_links: ^0.4.0
   flutter_svg: ^0.18.1
   crisp: ^0.1.3
+  uuid: 2.2.2
 
 dev_dependencies:
   flutter_test: