diff --git a/app/core/security.py b/app/core/security.py
index 6a617638..0f010f4e 100644
--- a/app/core/security.py
+++ b/app/core/security.py
@@ -1,17 +1,10 @@
 import base64
 import datetime
-import hashlib
-import hmac
-import json
-import os
-import traceback
 from datetime import timedelta
 from typing import Any, Union, Annotated, Optional
 
 import jwt
 from Crypto.Cipher import AES
-from Crypto.Util.Padding import pad
-from cryptography.fernet import Fernet
 from fastapi import HTTPException, status, Security, Request, Response
 from fastapi.security import OAuth2PasswordBearer, APIKeyHeader, APIKeyQuery, APIKeyCookie
 from passlib.context import CryptContext
@@ -274,35 +267,6 @@ def verify_password(plain_password: str, hashed_password: str) -> bool:
 def get_password_hash(password: str) -> str:
     return pwd_context.hash(password)
 
-
-def decrypt(data: bytes, key: bytes) -> Optional[bytes]:
-    """
-    解密二进制数据
-    """
-    fernet = Fernet(key)
-    try:
-        return fernet.decrypt(data)
-    except Exception as e:
-        logger.error(f"解密失败：{str(e)} - {traceback.format_exc()}")
-        return None
-
-
-def encrypt_message(message: str, key: bytes) -> str:
-    """
-    使用给定的key对消息进行加密，并返回加密后的字符串
-    """
-    f = Fernet(key)
-    encrypted_message = f.encrypt(message.encode())
-    return encrypted_message.decode()
-
-
-def hash_sha256(message: str) -> str:
-    """
-    对字符串做hash运算
-    """
-    return hashlib.sha256(message.encode()).hexdigest()
-
-
 def aes_decrypt(data: str, key: str) -> str:
     """
     AES解密
@@ -337,29 +301,3 @@ def aes_encrypt(data: str, key: str) -> str:
     result = cipher.encrypt(data.encode('utf-8'))
     # 使用base64编码
     return base64.b64encode(cipher.iv + result).decode('utf-8')
-
-
-def nexusphp_encrypt(data_str: str, key: bytes) -> str:
-    """
-    NexusPHP加密
-    """
-    # 生成16字节长的随机字符串
-    iv = os.urandom(16)
-    # 对向量进行 Base64 编码
-    iv_base64 = base64.b64encode(iv)
-    # 加密数据
-    cipher = AES.new(key, AES.MODE_CBC, iv)
-    ciphertext = cipher.encrypt(pad(data_str.encode(), AES.block_size))
-    ciphertext_base64 = base64.b64encode(ciphertext)
-    # 对向量的字符串表示进行签名
-    mac = hmac.new(key, msg=iv_base64 + ciphertext_base64, digestmod=hashlib.sha256).hexdigest()
-    # 构造 JSON 字符串
-    json_str = json.dumps({
-        'iv': iv_base64.decode(),
-        'value': ciphertext_base64.decode(),
-        'mac': mac,
-        'tag': ''
-    })
-
-    # 对 JSON 字符串进行 Base64 编码
-    return base64.b64encode(json_str.encode()).decode()