diff --git a/device-fingerprint-tool/src/main/java/com/sunyard/cisd/device/tool/Main.java b/device-fingerprint-tool/src/main/java/com/sunyard/cisd/device/tool/Main.java
index b5e3fbf..db27117 100644
--- a/device-fingerprint-tool/src/main/java/com/sunyard/cisd/device/tool/Main.java
+++ b/device-fingerprint-tool/src/main/java/com/sunyard/cisd/device/tool/Main.java
@@ -331,7 +331,7 @@ public class Main {
         SM3Util.writeFile(MAC_PUBLIC_KEY_OUTPUT_FILE, publicKeyPEM);
         System.out.println("MAC公钥文件已保存: " + MAC_PUBLIC_KEY_OUTPUT_FILE);
 
-        String publicKeySm3 = SM3Util.sm3DigestHex(publicKeyPEM.getBytes(StandardCharsets.UTF_8));
+        String publicKeySm3 = SM3Util.sm3DigestHex(macPublicKey.getEncoded());
         SM3Util.writeFile(MAC_PUBLIC_KEY_SM3_FILE, publicKeySm3);
         System.out.println("MAC公钥SM3校验值已保存: " + MAC_PUBLIC_KEY_SM3_FILE + " (" + publicKeySm3 + ")");
 
@@ -342,15 +342,13 @@ public class Main {
     private static void verifyRootCertMAC() throws Exception {
         System.out.println("=== 验证根证书MAC签名 ===");
 
-        String savedPublicKeyPEM = SM3Util.readFile(MAC_PUBLIC_KEY_OUTPUT_FILE).trim();
         String savedPublicKeySm3 = SM3Util.readFile(MAC_PUBLIC_KEY_SM3_FILE).trim();
 
-        String currentPublicKeySm3 = SM3Util.sm3DigestHex(savedPublicKeyPEM.getBytes(StandardCharsets.UTF_8));
+        PublicKey publicKey = SM2Util.loadPublicKey(MAC_PUBLIC_KEY_PATH);
+        String currentPublicKeySm3 = SM3Util.sm3DigestHex(publicKey.getEncoded());
         boolean publicKeyValid = savedPublicKeySm3.equals(currentPublicKeySm3);
         System.out.println("公钥校验值验证: " + publicKeyValid);
 
-        PublicKey publicKey = SM2Util.loadPublicKey(MAC_PUBLIC_KEY_PATH);
-
         InputStream certInputStream = Main.class.getResourceAsStream(ROOT_CERT_FILE);
         if (certInputStream == null) {
             throw new IllegalArgumentException("根证书文件未找到: " + ROOT_CERT_FILE);
diff --git a/device-fingerprint-tool/src/main/resources/fingerprint_public_key.pem b/device-fingerprint-tool/src/main/resources/fingerprint_sm2_public_key.pem
similarity index 100%
rename from device-fingerprint-tool/src/main/resources/fingerprint_public_key.pem
rename to device-fingerprint-tool/src/main/resources/fingerprint_sm2_public_key.pem