diff --git a/device-activation-platform/pom.xml b/device-activation-platform/pom.xml
index 6d1c599..8bc4543 100644
--- a/device-activation-platform/pom.xml
+++ b/device-activation-platform/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.11</version>
+        <version>2.7.18</version>
         <relativePath/>
     </parent>
 
@@ -18,7 +18,7 @@
     <description>Device Activation Platform</description>
 
     <properties>
-        <java.version>17</java.version>
+        <java.version>8</java.version>
     </properties>
 
     <dependencies>
diff --git a/device-activation-platform/src/main/java/com/sunyar/cisd/DeviceActivationService.java b/device-activation-platform/src/main/java/com/sunyar/cisd/DeviceActivationService.java
index e74d993..ca76d4a 100644
--- a/device-activation-platform/src/main/java/com/sunyar/cisd/DeviceActivationService.java
+++ b/device-activation-platform/src/main/java/com/sunyar/cisd/DeviceActivationService.java
@@ -6,8 +6,12 @@ import org.bouncycastle.util.encoders.Hex;
 import org.springframework.stereotype.Service;
 
 import java.nio.charset.StandardCharsets;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.PublicKey;
 import java.security.Security;
 import java.security.Signature;
+import java.security.spec.X509EncodedKeySpec;
 import java.util.Base64;
 
 @Service
@@ -50,12 +54,39 @@ public class DeviceActivationService {
 
     public String generateDeviceActivationPublicKey() {
         try {
-            java.security.KeyPairGenerator keyGen = java.security.KeyPairGenerator.getInstance("EC", PROVIDER);
+            KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC", PROVIDER);
             keyGen.initialize(256);
-            java.security.KeyPair keyPair = keyGen.generateKeyPair();
+            KeyPair keyPair = keyGen.generateKeyPair();
             return Base64.getEncoder().encodeToString(keyPair.getPublic().getEncoded());
         } catch (Exception e) {
             throw new RuntimeException("生成设备激活公钥失败", e);
         }
     }
+
+    public KeyPair generateKeyPair() {
+        try {
+            KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC", PROVIDER);
+            keyGen.initialize(256);
+            return keyGen.generateKeyPair();
+        } catch (Exception e) {
+            throw new RuntimeException("生成密钥对失败", e);
+        }
+    }
+
+    public boolean verifySm2Signature(String data, String signatureBase64, String publicKeyBase64) {
+        try {
+            byte[] keyBytes = Base64.getDecoder().decode(publicKeyBase64);
+            X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes);
+            java.security.KeyFactory keyFactory = java.security.KeyFactory.getInstance("EC", PROVIDER);
+            PublicKey publicKey = keyFactory.generatePublic(keySpec);
+
+            Signature signature = Signature.getInstance(SIGNATURE_ALGO, PROVIDER);
+            signature.initVerify(publicKey);
+            signature.update(data.getBytes(StandardCharsets.UTF_8));
+            byte[] signatureBytes = Base64.getDecoder().decode(signatureBase64);
+            return signature.verify(signatureBytes);
+        } catch (Exception e) {
+            throw new RuntimeException("SM2验签失败", e);
+        }
+    }
 }
\ No newline at end of file
diff --git a/device-activation-platform/src/test/java/com/sunyar/cisd/DeviceActivationServiceTest.java b/device-activation-platform/src/test/java/com/sunyar/cisd/DeviceActivationServiceTest.java
new file mode 100644
index 0000000..48ff570
--- /dev/null
+++ b/device-activation-platform/src/test/java/com/sunyar/cisd/DeviceActivationServiceTest.java
@@ -0,0 +1,88 @@
+package com.sunyar.cisd;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.security.KeyPair;
+import java.util.Base64;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DeviceActivationServiceTest {
+
+    private DeviceActivationService service;
+
+    @BeforeEach
+    void setUp() {
+        service = new DeviceActivationService();
+    }
+
+    @Test
+    void testCalculateSm3Hash() {
+        String input = "test data";
+        String hash = service.calculateSm3Hash(input);
+        assertNotNull(hash);
+        assertEquals(64, hash.length());
+        String hash2 = service.calculateSm3Hash(input);
+        assertEquals(hash, hash2);
+    }
+
+    @Test
+    void testSignAndVerifySm2Signature() {
+        String data = "device activation test data";
+        KeyPair keyPair = service.generateKeyPair();
+        String privateKeyBase64 = Base64.getEncoder().encodeToString(keyPair.getPrivate().getEncoded());
+        String publicKeyBase64 = Base64.getEncoder().encodeToString(keyPair.getPublic().getEncoded());
+
+        String signature = service.signWithSm2Pkcs1(data, privateKeyBase64);
+        assertNotNull(signature);
+        assertFalse(signature.isEmpty());
+
+        boolean verified = service.verifySm2Signature(data, signature, publicKeyBase64);
+        assertTrue(verified, "签名验签应该通过");
+    }
+
+    @Test
+    void testVerifySm2SignatureWithWrongData() {
+        String data = "original data";
+        String wrongData = "modified data";
+        KeyPair keyPair = service.generateKeyPair();
+        String privateKeyBase64 = Base64.getEncoder().encodeToString(keyPair.getPrivate().getEncoded());
+        String publicKeyBase64 = Base64.getEncoder().encodeToString(keyPair.getPublic().getEncoded());
+
+        String signature = service.signWithSm2Pkcs1(data, privateKeyBase64);
+
+        boolean verified = service.verifySm2Signature(wrongData, signature, publicKeyBase64);
+        assertFalse(verified, "数据被篡改后验签应该失败");
+    }
+
+    @Test
+    void testVerifySm2SignatureWithWrongKey() {
+        String data = "test data";
+        KeyPair keyPair1 = service.generateKeyPair();
+        KeyPair keyPair2 = service.generateKeyPair();
+        String privateKeyBase64 = Base64.getEncoder().encodeToString(keyPair1.getPrivate().getEncoded());
+        String wrongPublicKeyBase64 = Base64.getEncoder().encodeToString(keyPair2.getPublic().getEncoded());
+
+        String signature = service.signWithSm2Pkcs1(data, privateKeyBase64);
+
+        boolean verified = service.verifySm2Signature(data, signature, wrongPublicKeyBase64);
+        assertFalse(verified, "使用错误的公钥验签应该失败");
+    }
+
+    @Test
+    void testGenerateDeviceActivationPublicKey() {
+        String publicKey = service.generateDeviceActivationPublicKey();
+        assertNotNull(publicKey);
+        assertFalse(publicKey.isEmpty());
+    }
+
+    @Test
+    void testGenerateKeyPair() {
+        KeyPair keyPair = service.generateKeyPair();
+        assertNotNull(keyPair);
+        assertNotNull(keyPair.getPublic());
+        assertNotNull(keyPair.getPrivate());
+    }
+}
\ No newline at end of file