diff --git a/dart-js/h_.dart b/dart-js/h_.dart
new file mode 100644
index 0000000..068726f
--- /dev/null
+++ b/dart-js/h_.dart
@@ -0,0 +1,31 @@
+
+
+String h_(String str) {
+  int a = 1;
+  int b = 3;
+  int c = 5;
+  int d = 7;
+  for (int n in str.codeUnits) {
+    a = (a + n + d) * 17 % 52;
+    b = (b + n * a) * 23 % 52;
+    c = (c + n + b) * 47 % 52;
+    d = (d + n * c) * 41 % 52;
+  }
+  if (a < 26) a += 65;
+    else a += 71;
+  if (b < 26) b += 65;
+    else b += 71;
+  if (c < 26) c += 65;
+    else c += 71;
+  if (d < 26) d += 65;
+      else d += 71;
+  return new String.fromCharCodes([a, b, c, d]);
+}
+
+void main(List<String> args) {
+  // 对于每一个输入 都混淆一遍再输出
+
+  for (String arg in args) {
+    print(arg + " -> " + h_(arg));
+  }
+}
\ No newline at end of file