Commit code. Update time: 2023-06-25

flutter/lib/utils/encrypt_util.dart

@@ -0,0 +1,54 @@
+import 'dart:convert';
+
+import 'package:crypto/crypto.dart';
+import 'package:convert/convert.dart';
+
+/// Encrypt Util.
+class EncryptUtil {
+  /// md5 加密
+  static String encodeMd5(String data) {
+    var content = Utf8Encoder().convert(data);
+    var digest = md5.convert(content);
+    return hex.encode(digest.bytes);
+  }
+
+  /// 异或对称加密
+  static String xorCode(String res, String key) {
+    List<String> keyList = key.split(',');
+    List<int> codeUnits = res.codeUnits;
+    List<int> codes = [];
+    for (int i = 0, length = codeUnits.length; i < length; i++) {
+      int code = codeUnits[i] ^ int.parse(keyList[i % keyList.length]);
+      codes.add(code);
+    }
+    return String.fromCharCodes(codes);
+  }
+
+  /// 异或对称 Base64 加密
+  static String xorBase64Encode(String res, String key) {
+    String encode = xorCode(res, key);
+    encode = encodeBase64(encode);
+    return encode;
+  }
+
+  /// 异或对称 Base64 解密
+  static String xorBase64Decode(String res, String key) {
+    String encode = decodeBase64(res);
+    encode = xorCode(encode, key);
+    return encode;
+  }
+
+  /// Base64加密
+  static String encodeBase64(String data) {
+    var content = utf8.encode(data);
+    var digest = base64Encode(content);
+    return digest;
+  }
+
+  /// Base64解密
+  static String decodeBase64(String data) {
+    List<int> bytes = base64Decode(data);
+    String result = utf8.decode(bytes);
+    return result;
+  }
+}