diff --git a/src/main/java/com/knowledge/base/domain/user/service/impl/UserAuthDomainSupportImpl.java b/src/main/java/com/knowledge/base/domain/user/service/impl/UserAuthDomainSupportImpl.java
index 3598c60..e5659f3 100644
--- a/src/main/java/com/knowledge/base/domain/user/service/impl/UserAuthDomainSupportImpl.java
+++ b/src/main/java/com/knowledge/base/domain/user/service/impl/UserAuthDomainSupportImpl.java
@@ -5,11 +5,9 @@ import com.knowledge.base.domain.user.repository.iface.UserTokenRepository;
 import com.knowledge.base.domain.user.repository.po.User;
 import com.knowledge.base.domain.user.repository.po.UserToken;
 import com.knowledge.base.domain.user.service.iface.UserAuthDomainSupport;
+import com.knowledge.base.infrastructure.util.crypto.SM3Util;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
-import org.springframework.util.DigestUtils;
-
-import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
 import java.util.Optional;
 import java.util.UUID;
@@ -26,7 +24,7 @@ public class UserAuthDomainSupportImpl implements UserAuthDomainSupport {
         Optional<User> userOpt = userRepository.findByUsername(username);
         if (userOpt.isEmpty()) return false;
         User user = userOpt.get();
-        String inputHash = DigestUtils.md5DigestAsHex(plainText.getBytes(StandardCharsets.UTF_8));
+        String inputHash = SM3Util.digest(plainText);
         return inputHash.equals(user.getPassword());
     }