diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/KeyUtilTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/KeyUtilTest.java
index b75c05611..2cd71e794 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/KeyUtilTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/KeyUtilTest.java
@@ -46,4 +46,16 @@ public class KeyUtilTest {
 		final PrivateKey privateKey = KeyUtil.generatePrivateKey("EC", privateKeyBytes);
 		Assert.assertEquals(ecies.getPrivate(), privateKey);
 	}
+
+	@Test
+	public void generateDHTest(){
+		final KeyPair dh = KeyUtil.generateKeyPair("DH");
+		Assert.assertNotNull(dh.getPrivate());
+		Assert.assertNotNull(dh.getPublic());
+
+		byte[] privateKeyBytes = dh.getPrivate().getEncoded();
+
+		final PrivateKey privateKey = KeyUtil.generatePrivateKey("DH", privateKeyBytes);
+		Assert.assertEquals(dh.getPrivate(), privateKey);
+	}
 }
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java
index f09583c4f..ffb5e1dbc 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java
@@ -1,23 +1,18 @@
 package cn.hutool.crypto.test.asymmetric;
 
 import cn.hutool.core.codec.Base64;
-import cn.hutool.core.io.resource.ResourceUtil;
 import cn.hutool.core.util.CharsetUtil;
 import cn.hutool.core.util.HexUtil;
 import cn.hutool.core.util.StrUtil;
-import cn.hutool.crypto.ASN1Util;
 import cn.hutool.crypto.ECKeyUtil;
 import cn.hutool.crypto.KeyUtil;
 import cn.hutool.crypto.SecureUtil;
 import cn.hutool.crypto.SmUtil;
 import cn.hutool.crypto.asymmetric.KeyType;
 import cn.hutool.crypto.asymmetric.SM2;
-import org.bouncycastle.asn1.ASN1Integer;
-import org.bouncycastle.asn1.ASN1Sequence;
 import org.bouncycastle.crypto.engines.SM2Engine;
 import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
 import org.bouncycastle.jcajce.spec.OpenSSHPrivateKeySpec;
-import org.bouncycastle.math.ec.ECPoint;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -316,14 +311,4 @@ public class SM2Test {
 		byte[] dec =  sm2.decrypt(data, KeyType.PrivateKey);
 		Assert.assertArrayEquals(dec, src.getBytes(StandardCharsets.UTF_8));
 	}
-
-	@Test
-	public void asn1DecryptTest(){
-		final SM2 sm2 = SmUtil.sm2("00dc7651c8473110a83215bfd26f37e306b2b99b02da9a4af9b9bd12e6360849bd", null);
-		final ASN1Sequence asn1 = (ASN1Sequence) ASN1Util.decode(ResourceUtil.getStream("asn1.key"));
-
-		ASN1Integer x = (ASN1Integer) asn1.getObjectAt(0);
-		ASN1Integer y = (ASN1Integer) asn1.getObjectAt(1);
-		final ECPoint point = SmUtil.SM2_DOMAIN_PARAMS.getCurve().createPoint(x.getValue(), y.getValue());
-	}
 }