diff --git a/src/main/java/io/company/localhost/common/exception/GlobalExceptionHandler.java b/src/main/java/io/company/localhost/common/exception/GlobalExceptionHandler.java
index 37914a2..e001992 100644
--- a/src/main/java/io/company/localhost/common/exception/GlobalExceptionHandler.java
+++ b/src/main/java/io/company/localhost/common/exception/GlobalExceptionHandler.java
@@ -10,6 +10,7 @@
  * DATE            AUTHOR       NOTE
  * -----------------------------------------------------------
  * 24.12.06        조인제       최초 생성
+ * 25.02.10        서지희       InvalidPasswordException추가
  *
  *************************************************************/
 package io.company.localhost.common.exception;
@@ -28,26 +29,52 @@ import lombok.extern.slf4j.Slf4j;
 @RestControllerAdvice(annotations = RestController.class)
 public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
 
-	@ExceptionHandler(RestApiException.class)
-	public ResponseEntity<Object> handleCustomException(RestApiException e) {
-		ErrorCode errorCode = e.getErrorCode();
-		return ErrorResult.handleExceptionInternal(errorCode);
-	}
+    /**
+     * 사용자 정의 API 예외 처리 (RestApiException)
+     */
+    @ExceptionHandler(RestApiException.class)
+    public ResponseEntity<Object> handleCustomException(RestApiException e) {
+        ErrorCode errorCode = e.getErrorCode();
+        return ErrorResult.handleExceptionInternal(errorCode);
+    }
 
-	@ExceptionHandler(IllegalArgumentException.class)
-	public ResponseEntity<Object> handleIllegalArgument(IllegalArgumentException e) {
-		log.warn("handleIllegalArgument", e);
-		ErrorCode errorCode = CommonErrorCode.INVALID_PARAMETER;
-		return ErrorResult.handleExceptionInternal(errorCode, e.getMessage());
-	}
+    /**
+     * 잘못된 요청 (IllegalArgumentException) 처리
+     */
+    @ExceptionHandler(IllegalArgumentException.class)
+    public ResponseEntity<Object> handleIllegalArgument(IllegalArgumentException e) {
+        log.warn("handleIllegalArgument", e);
+        ErrorCode errorCode = CommonErrorCode.INVALID_PARAMETER;
+        return ErrorResult.handleExceptionInternal(errorCode, e.getMessage());
+    }
 
+    /**
+     * 게시물을 찾을 수 없는 경우 (NotFoundHandler)
+     */
+    @ExceptionHandler(NotFoundHandler.class)
+    public ResponseEntity<Object> handleBoardNotFoundException(NotFoundHandler e) {
+        log.warn("handleBoardNotFoundException: {}", e.getMessage());
+        ErrorCode errorCode = CommonErrorCode.RESOURCE_NOT_FOUND;
+        return ErrorResult.handleExceptionInternal(errorCode, e.getMessage());
+    }
 
-	@ExceptionHandler({Exception.class})
-	public ResponseEntity<Object> handleAllException(Exception ex) {
-		log.warn("handleAllException", ex);
-		ErrorCode errorCode = CommonErrorCode.INTERNAL_SERVER_ERROR;
-		return ErrorResult.handleExceptionInternal(errorCode);
-	}
+    /**
+     * 비밀번호가 틀린 경우 예외 처리 (InvalidPasswordException)
+     */
+    @ExceptionHandler(InvalidPasswordException.class)
+    public ResponseEntity<Object> handleInvalidPasswordException(InvalidPasswordException e) {
+        log.warn("handleInvalidPasswordException: {}", e.getMessage());
+        ErrorCode errorCode = CommonErrorCode.UNAUTHORIZED;
+        return ErrorResult.handleExceptionInternal(errorCode, e.getMessage());
+    }
 
-
-}
+    /**
+     * 서버 내부 오류 처리 (Exception)
+     */
+    @ExceptionHandler({Exception.class})
+    public ResponseEntity<Object> handleAllException(Exception ex) {
+        log.warn("handleAllException", ex);
+        ErrorCode errorCode = CommonErrorCode.INTERNAL_SERVER_ERROR;
+        return ErrorResult.handleExceptionInternal(errorCode);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/io/company/localhost/common/exception/InvalidPasswordException.java b/src/main/java/io/company/localhost/common/exception/InvalidPasswordException.java
new file mode 100644
index 0000000..e723a99
--- /dev/null
+++ b/src/main/java/io/company/localhost/common/exception/InvalidPasswordException.java
@@ -0,0 +1,7 @@
+package io.company.localhost.common.exception;
+
+public class InvalidPasswordException extends RuntimeException {
+    public InvalidPasswordException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/io/company/localhost/common/exception/NotFoundHandler.java b/src/main/java/io/company/localhost/common/exception/NotFoundHandler.java
index af18be4..118df5c 100644
--- a/src/main/java/io/company/localhost/common/exception/NotFoundHandler.java
+++ b/src/main/java/io/company/localhost/common/exception/NotFoundHandler.java
@@ -25,15 +25,8 @@ import io.company.localhost.common.exception.code.CommonErrorCode;
 import io.company.localhost.common.exception.code.ErrorCode;
 import lombok.extern.slf4j.Slf4j;
 
-@Slf4j
-@RestControllerAdvice
-public class NotFoundHandler {
-
-	@ResponseStatus(HttpStatus.NOT_FOUND)
-	@ExceptionHandler(NoHandlerFoundException.class)
-	public ResponseEntity<Object> noHandlerFoundArgument(NoHandlerFoundException e) {
-		log.warn("NoHandlerFoundException", e);
-		ErrorCode errorCode = CommonErrorCode.RESOURCE_NOT_FOUND;
-		return ErrorResult.handleExceptionInternal(errorCode, errorCode.getMessage());
-	}
+public class NotFoundHandler extends RuntimeException {
+    public NotFoundHandler(String message) {
+        super(message);
+    }
 }
diff --git a/src/main/java/io/company/localhost/common/exception/code/CommonErrorCode.java b/src/main/java/io/company/localhost/common/exception/code/CommonErrorCode.java
index 5d99fd4..caea7af 100644
--- a/src/main/java/io/company/localhost/common/exception/code/CommonErrorCode.java
+++ b/src/main/java/io/company/localhost/common/exception/code/CommonErrorCode.java
@@ -10,6 +10,7 @@
  * DATE            AUTHOR       NOTE
  * -----------------------------------------------------------
  * 24.12.06        조인제       최초 생성
+ * 24.02.10        서지희       비밀번호 불일치 시 권한없음 추가
  *
  *************************************************************/
 package io.company.localhost.common.exception.code;
@@ -26,6 +27,7 @@ public enum CommonErrorCode implements ErrorCode {
 	INVALID_PARAMETER(HttpStatus.BAD_REQUEST,"잘못된 매개변수가 포함되었습니다."),
 	RESOURCE_NOT_FOUND(HttpStatus.NOT_FOUND,"리소스가 존재하지 않습니다"),
 	INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR,"내부 서버 오류"),
+	UNAUTHORIZED(HttpStatus.UNAUTHORIZED,"권한없음"),
 	;
 
 	private final long code;
diff --git a/src/main/java/io/company/localhost/controller/api/BoardController.java b/src/main/java/io/company/localhost/controller/api/BoardController.java
index f5da9b3..ba4fe49 100644
--- a/src/main/java/io/company/localhost/controller/api/BoardController.java
+++ b/src/main/java/io/company/localhost/controller/api/BoardController.java
@@ -18,6 +18,7 @@ package io.company.localhost.controller.api;
 import java.math.BigInteger;
 import java.util.List;
 
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.web.bind.annotation.*;
 
 import com.github.pagehelper.PageInfo;
@@ -27,6 +28,8 @@ import io.company.localhost.common.annotation.ParameterCheck;
 import io.company.localhost.common.annotation.ReqMap;
 import io.company.localhost.common.dto.ApiResponse;
 import io.company.localhost.common.dto.MapDto;
+import io.company.localhost.common.exception.InvalidPasswordException;
+import io.company.localhost.common.exception.NotFoundHandler;
 import io.company.localhost.service.commoncodService;
 import io.company.localhost.service.localbordService;
 import io.company.localhost.utils.AuthUtil;
@@ -41,6 +44,7 @@ public class BoardController {
 
     private final localbordService boardService;
     private final commoncodService commoncodService;
+    private final PasswordEncoder passwordEncoder;
 
     /**
      * 공지사항 목록 조회
@@ -76,8 +80,15 @@ public class BoardController {
     @ParameterCheck
     @PostMapping
     public ApiResponse<BigInteger> createBoard(@ReqMap MapDto map) {
-    	Long userId = AuthUtil.getUser().getId();
-		map.put("MEMBERSEQ", userId);
+        Long userId = AuthUtil.getUser().getId();
+        map.put("MEMBERSEQ", 22);
+
+        if (map.containsKey("LOCBRDPWD") && !map.getString("LOCBRDPWD").trim().isEmpty()) { // 빈 값 체크
+            String rawPassword = map.getString("LOCBRDPWD");
+            String hashedPassword = passwordEncoder.encode(rawPassword);
+            map.put("LOCBRDPWD", hashedPassword);
+        }
+
         return ApiResponse.ok(boardService.createBoard(map));
     }
 
@@ -90,7 +101,11 @@ public class BoardController {
     @ParameterCheck
     @GetMapping("/{boardId}")
     public ApiResponse<MapDto> getBoardDetail(@PathVariable("boardId") Long boardId) {
-        return ApiResponse.ok(boardService.getBoardDetail(boardId));
+        MapDto board = boardService.getBoardDetail(boardId);
+        if (board == null) {
+            throw new NotFoundHandler("게시물 ID " + boardId + "을(를) 찾을 수 없습니다.");
+        }
+        return ApiResponse.ok(board);
     }
 
     /**
@@ -129,7 +144,7 @@ public class BoardController {
     @PostMapping("/{CMNBRDSEQ}/attachments")
     public ApiResponse<String> uploadAttachment(@ReqMap MapDto map) {
     	Long userId = AuthUtil.getUser().getId();
-		map.put("CMNFLEREG", userId);
+		map.put("CMNFLEREG", 22);
         boardService.addAttachment(map);
         return ApiResponse.ok("첨부파일이 저장되었습니다.");
     }
@@ -144,7 +159,7 @@ public class BoardController {
     @PostMapping("/{LOCBRDSEQ}/{LOCCMTSEQ}/reaction")
     public ApiResponse<String> reactToBoard(@ReqMap MapDto map) {
     	Long userId = AuthUtil.getUser().getId();
-		map.put("MEMBERSEQ", userId);
+		map.put("MEMBERSEQ", 22);
         boardService.reactToBoard(map);
         return ApiResponse.ok("반응이 성공적으로 처리되었습니다.");
     }
@@ -172,7 +187,13 @@ public class BoardController {
     @PostMapping("/{LOCBRDSEQ}/comment")
     public ApiResponse<String> addCommentOrReply(@ReqMap MapDto map) {
     	Long userId = AuthUtil.getUser().getId();
-		map.put("MEMBERSEQ", userId);
+		map.put("MEMBERSEQ", 22);
+		
+		if (map.containsKey("LOCCMTPWD") && !map.getString("LOCCMTPWD").trim().isEmpty()) { // 빈 값 체크
+	        String rawPassword = map.getString("LOCCMTPWD");
+	        String hashedPassword = passwordEncoder.encode(rawPassword);
+	        map.put("LOCCMTPWD", hashedPassword);
+	    }
         boardService.addCommentOrReply(map);
         return ApiResponse.ok("댓글 또는 대댓글이 작성되었습니다.");
     }
@@ -205,20 +226,7 @@ public class BoardController {
     }
 
     /**
-     * 댓글 비밀번호 확인
-     * @ReqMap map 수정 데이터 (LOCCMTSEQ, LOCCMTPWD)
-     * @return 비밀번호 확인 결과
-     */
-    @Member
-    @ParameterCheck
-    @PostMapping("/comment/{commentId}/password")
-    public ApiResponse<Boolean> checkCommentPassword(@ReqMap MapDto map) {
-    	int commentId = (int) map.get("LOCCMTPWD");
-        return ApiResponse.ok(boardService.getCommentPassword(commentId).equals(map.getString("LOCCMTPWD")));
-    }
-
-    /**
-     * 게시물 비밀번호 확인
+     * 게시물 비밀번호 확인 (해싱된 비밀번호 비교 적용)
      * @ReqMap map 수정 데이터 (LOCBRDSEQ, LOCBRDPWD)
      * @return 비밀번호 확인 결과
      */
@@ -226,8 +234,45 @@ public class BoardController {
     @ParameterCheck
     @PostMapping("/{boardId}/password")
     public ApiResponse<Boolean> checkBoardPassword(@ReqMap MapDto map) {
-    	int boardId = (int) map.get("LOCBRDSEQ");
-        return ApiResponse.ok(boardService.getBoardPassword(boardId).equals(map.getString("LOCBRDPWD")));
+        int boardId = (int) map.get("LOCBRDSEQ");
+        String rawPassword = map.getString("LOCBRDPWD");
+
+        String storedHashedPassword = boardService.getBoardPassword(boardId);
+        if (storedHashedPassword == null) {
+            throw new NotFoundHandler("해당 게시물이 존재하지 않습니다.");
+        }
+
+        boolean isMatch = passwordEncoder.matches(rawPassword, storedHashedPassword);
+        if (!isMatch) {
+            throw new InvalidPasswordException("비밀번호가 일치하지 않습니다.");
+        }
+
+        return ApiResponse.ok(true);
+    }
+
+    /**
+     * 댓글 비밀번호 확인 (해싱된 비밀번호 비교 적용)
+     * @ReqMap map 수정 데이터 (LOCCMTSEQ, LOCCMTPWD)
+     * @return 비밀번호 확인 결과
+     */
+    @Member
+    @ParameterCheck
+    @PostMapping("/comment/{commentId}/password")
+    public ApiResponse<Boolean> checkCommentPassword(@ReqMap MapDto map) {
+        int commentId = (int) map.get("LOCCMTSEQ");
+        String rawPassword = map.getString("LOCCMTPWD");
+
+        String storedHashedPassword = boardService.getCommentPassword(commentId);
+        if (storedHashedPassword == null) {
+            throw new NotFoundHandler("해당 댓글이 존재하지 않습니다.");
+        }
+
+        boolean isMatch = passwordEncoder.matches(rawPassword, storedHashedPassword);
+        if (!isMatch) {
+            throw new InvalidPasswordException("비밀번호가 일치하지 않습니다.");
+        }
+
+        return ApiResponse.ok(true);
     }
     
     /**
diff --git a/src/main/java/io/company/localhost/service/localbordService.java b/src/main/java/io/company/localhost/service/localbordService.java
index cddff6d..a5cab39 100644
--- a/src/main/java/io/company/localhost/service/localbordService.java
+++ b/src/main/java/io/company/localhost/service/localbordService.java
@@ -171,45 +171,24 @@ public class localbordService {
         return boardMapper.getCommentReactions(boardId);
     }
 
-    private void enrichBoardDetail(MapDto boardDetail) {
-        long boardId = ((Number) boardDetail.get("id")).longValue();
-        boardDetail.put("hasAttachment", hasAttachments(boardId));
-        boardDetail.put("commentCount", getCommentCount(boardId));
-        MapDto reactions = getBoardReactions(boardId);
-        boardDetail.put("likeCount", reactions.getOrDefault("likeCount", 0));
-        boardDetail.put("dislikeCount", reactions.getOrDefault("dislikeCount", 0));
-
-        // Blob 데이터를 문자열로 변환
-        Object content = boardDetail.get("content");
-        if (content != null) {
-            String contentString = convertBlobToString(content); // Blob을 문자열로 변환
-            boardDetail.put("content", contentString); // JSON 변환 가능
-        }
-    }
-
     private String convertBlobToString(Object blob) {
         try {
             if (blob instanceof String) {
-                return (String) blob; // 이미 문자열인 경우 반환
+                return (String) blob;  // 이미 문자열이면 그대로 반환
             } else if (blob instanceof java.sql.Blob) {
                 java.sql.Blob sqlBlob = (java.sql.Blob) blob;
                 long blobLength = sqlBlob.length();
                 byte[] blobBytes = sqlBlob.getBytes(1, (int) blobLength);
-                return new String(blobBytes, StandardCharsets.UTF_8);
-            } else if (blob instanceof ByteArrayInputStream) {
-                ByteArrayInputStream inputStream = (ByteArrayInputStream) blob;
-                byte[] bytes = inputStream.readAllBytes();
-                return new String(bytes, StandardCharsets.UTF_8);
+                return new String(blobBytes, StandardCharsets.UTF_8);  // SQL BLOB → 바이트 배열 → 문자열 변환
             } else {
-                System.err.println("Unsupported blob type: " + blob.getClass());
+                throw new UnsupportedOperationException("Unsupported blob type: " + blob.getClass());  // 지원되지 않는 타입이면 예외 발생
             }
         } catch (Exception e) {
-            e.printStackTrace();
-            throw new RuntimeException("Failed to convert Blob to String: " + e.getMessage(), e);
+            throw new RuntimeException("Failed to convert Blob to String: " + e.getMessage(), e);  // 변환 실패 시 예외 처리
         }
-        return null;
     }
 
+
     private String extractFirstImageUrl(String jsonContent) {
         try {
             // JSON 유효성 검사
@@ -276,7 +255,23 @@ public class localbordService {
         }
         return plainTextBuilder.toString();
     }
+    
+    private void enrichBoardDetail(MapDto boardDetail) {
+        long boardId = ((Number) boardDetail.get("id")).longValue();
+        boardDetail.put("hasAttachment", hasAttachments(boardId));
+        boardDetail.put("commentCount", getCommentCount(boardId));
+        MapDto reactions = getBoardReactions(boardId);
+        boardDetail.put("likeCount", reactions.getOrDefault("likeCount", 0));
+        boardDetail.put("dislikeCount", reactions.getOrDefault("dislikeCount", 0));
 
+        // Blob 데이터를 문자열로 변환
+        Object content = boardDetail.get("content");
+        if (content != null) {
+            String contentString = convertBlobToString(content); // Blob을 문자열로 변환
+            boardDetail.put("content", contentString); // JSON 변환 가능
+        }
+    }
+    
     private void enrichPostsWithAdditionalData(List<MapDto> posts) {
         for (MapDto post : posts) {
             Object idObject = post.get("id");