diff --git a/src/main/java/fairytale/tbd/domain/faceSwap/util/CryptoUtils.java b/src/main/java/fairytale/tbd/domain/faceSwap/util/CryptoUtils.java
index 0163bb7..6b4e0e7 100644
--- a/src/main/java/fairytale/tbd/domain/faceSwap/util/CryptoUtils.java
+++ b/src/main/java/fairytale/tbd/domain/faceSwap/util/CryptoUtils.java
@@ -6,6 +6,8 @@
 import javax.crypto.spec.SecretKeySpec;
 import java.util.Arrays;
 import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+
 import javax.xml.bind.DatatypeConverter;
 
 import org.springframework.beans.factory.annotation.Value;
@@ -64,27 +66,6 @@ public static String generateAesDecrypt(String dataEncrypt, String clientId, Str
 			return null;
 		}
 	}
-
-	// Encryption algorithm
-	public static String generateAesEncrypt(String data, String clientId, String clientSecret) {
-		try {
-			byte[] keyBytes = clientSecret.getBytes(StandardCharsets.UTF_8);
-			byte[] ivBytes = clientId.getBytes(StandardCharsets.UTF_8);
-
-			SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
-			IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
-
-			Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
-			cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec);
-
-			byte[] encryptedBytes = cipher.doFinal(data.getBytes(StandardCharsets.UTF_8));
-			return DatatypeConverter.printHexBinary(encryptedBytes).toLowerCase();
-		} catch (Exception e) {
-			e.printStackTrace();
-			return null;
-		}
-	}
-
 	// Example usage
 	public String getURL(WebhookRequestDTO.RequestDTO webhookRequestDTO){
 		String newSignature = generateMsgSignature(clientId, webhookRequestDTO.getTimestamp(), webhookRequestDTO.getNonce(), webhookRequestDTO.getDataEncrypt());
diff --git a/src/main/java/fairytale/tbd/domain/faceSwap/web/controller/FaceSwapRestController.java b/src/main/java/fairytale/tbd/domain/faceSwap/web/controller/FaceSwapRestController.java
index 5321864..e4d3c0a 100644
--- a/src/main/java/fairytale/tbd/domain/faceSwap/web/controller/FaceSwapRestController.java
+++ b/src/main/java/fairytale/tbd/domain/faceSwap/web/controller/FaceSwapRestController.java
@@ -15,6 +15,7 @@
 import lombok.RequiredArgsConstructor;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
+import org.springframework.http.ResponseEntity;
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -80,11 +81,11 @@ public ApiResponse<Map<String, String>> test(@RequestBody FaceSwapRequestDto.Fac
     }
 
     @PostMapping("/webhook")
-    public ApiResponse<String> webhook(@RequestBody WebhookRequestDTO.RequestDTO request){
+    public ResponseEntity<?> webhook(@RequestBody WebhookRequestDTO.RequestDTO request){
         LOGGER.info("request = {}", request);
 
         String swapResult = faceSwapApiService.getSwapImageURL(request);
         LOGGER.info("swapResult = {}", swapResult);
-        return ApiResponse.onSuccess("thank you");
+        return ResponseEntity.ok().build();
     }
 }