diff --git a/chsm-web-server/src/main/java/com/sunyard/chsm/pool/TMKContextFactory.java b/chsm-web-server/src/main/java/com/sunyard/chsm/pool/TMKContextFactory.java
index d022a5f..3a4e9af 100644
--- a/chsm-web-server/src/main/java/com/sunyard/chsm/pool/TMKContextFactory.java
+++ b/chsm-web-server/src/main/java/com/sunyard/chsm/pool/TMKContextFactory.java
@@ -72,9 +72,9 @@ public class TMKContextFactory extends BasePooledObjectFactory<TMKContext> {
         }
         try {
             byte[] encData = sdfApiAdapter.symEncrypt(handle.getSessionHandle(),
-                    handle.getKeyHandle(), AlgId.SGD_SM4_CBC, CryptoConst.iv, checkData);
+                    handle.getKeyHandle(), AlgId.SGD_SM4_CBC, CryptoConst.iv(), checkData);
             byte[] decData = sdfApiAdapter.symDecrypt(handle.getSessionHandle(),
-                    handle.getKeyHandle(), AlgId.SGD_SM4_CBC, CryptoConst.iv, encData);
+                    handle.getKeyHandle(), AlgId.SGD_SM4_CBC, CryptoConst.iv(), encData);
             Assert.isTrue(Arrays.equals(checkData, decData), "密码机加解密异常");
             return true;
         } catch (Exception e) {