draft

backend/internal/channel/heepay/cbc.go

@@ -0,0 +1,13 @@
+package heepay
+
+import "crypto/cipher"
+
+// newCBCEncrypter 创建 CBC 加密器（封装 cipher.NewCBCEncrypter）
+func newCBCEncrypter(block cipher.Block, iv []byte) cipher.BlockMode {
+	return cipher.NewCBCEncrypter(block, iv)
+}
+
+// newCBCDecrypter 创建 CBC 解密器
+func newCBCDecrypter(block cipher.Block, iv []byte) cipher.BlockMode {
+	return cipher.NewCBCDecrypter(block, iv)
+}