diff --git a/chsm-common/src/main/java/com/sunyard/chsm/enums/KeyUsage.java b/chsm-common/src/main/java/com/sunyard/chsm/enums/KeyUsage.java
index 341012a..f28593f 100644
--- a/chsm-common/src/main/java/com/sunyard/chsm/enums/KeyUsage.java
+++ b/chsm-common/src/main/java/com/sunyard/chsm/enums/KeyUsage.java
@@ -56,7 +56,7 @@ public enum KeyUsage {
 
 
     public static boolean hasUsage(int nowUsage, KeyUsage usage) {
-        return (nowUsage & usage.value) > 0;
+        return (nowUsage & usage.value) >= usage.value;
     }
 
 }
diff --git a/chsm-model/pom.xml b/chsm-params/pom.xml
similarity index 94%
rename from chsm-model/pom.xml
rename to chsm-params/pom.xml
index bbc9399..b54c4e8 100644
--- a/chsm-model/pom.xml
+++ b/chsm-params/pom.xml
@@ -9,7 +9,7 @@
         <version>1.0-SNAPSHOT</version>
     </parent>
 
-    <artifactId>chsm-model</artifactId>
+    <artifactId>chsm-params</artifactId>
 
     <properties>
         <maven.compiler.source>8</maven.compiler.source>
diff --git a/pom.xml b/pom.xml
index b02573f..52f142d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
     <version>1.0-SNAPSHOT</version>
     <modules>
         <module>chsm-web-server</module>
-        <module>chsm-model</module>
+        <module>chsm-params</module>
         <module>chsm-web-manage</module>
         <module>chsm-common</module>
     </modules>