diff --git a/test.cert b/test.cert
index fd491c1..5d0c57d 100644
--- a/test.cert
+++ b/test.cert
@@ -1,15 +1,15 @@
-Bv0Cxwc1CANuZG4IA2VkdQgFcGt1c3oIAk9BCANLRVkICGPbD1xognqbCARzZWxm
-CAn9AAABcTrEzzwUCRgBAhkEADbugBX9ASYwggEiMA0GCSqGSIb3DQEBAQUAA4IB
-DwAwggEKAoIBAQC5iB3MjTnzWUBlUryln80o9Y9WifC3KdF5xh9SazM90kVlTOqz
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-hmoDgPLsiW5auhefv7cXwLfqee3BwaeugBw/77Z5/0/6X9bY9YXwFkcWl0JpGfGm
-XqZKD/V4TcK0/mNd6ho73aL3AdRnportgoo8RLGYQeG3VVXj8OAlOlJ/Ekh+Xel7
-C9sUQn2OuRw7bib52hode0WbTyxiaTsHlJX3AgMBAAEWVRsBARwmByQIA25kbggD
-ZWR1CAVwa3VzeggCT0EIA0tFWQgIY9sPXGiCepv9AP0m/QD+DzE5NzAwMTAxVDAw
-MDAwMP0A/w8yMDQwMDMyOFQxMjAxNDgX/QEATFdz4SS3vHcA9twisNeqTi+3grxb
-isVJvH2LOOUxZhEP1H1NAP5EihLz91RqGnlcwl94svSNkZysuDm/0WI3bXtPTso7
-b+pS758CqMJ7SbvuAGFk9Q30it/Z3A2wUV2qxZbfp46u7JUByu2xU/0i3kzvWr4z
-w5EtWFoatNVsZDElKVsFSxo4k8Z1df3gXAWwF6ZIE12o7SM7O8EWtbiL1QydB30k
-A8zB9mJ9P//pAojI+u57WyCdRwa316cu2Q9ucFf22lPhtJxXzV8yf/sYW3bJeSPW
-D20fxxX3KrPNwSTI8oPl4ajvI4fexy4LXJ4F9GJ8VGBmc+A9HftxfHXVRw==
\ No newline at end of file
+Bv0Cxwc1CAlsb2NhbGhvc3QICG9wZXJhdG9yCANLRVkICIiqThBk+aacCARzZWxm
+CAn9AAABcnfGSKsUCRgBAhkEADbugBX9ASYwggEiMA0GCSqGSIb3DQEBAQUAA4IB
+DwAwggEKAoIBAQC+Tlyv95XldHrov8Q9/jIMQPxrYz+fsRr88XiwNqUF0Mi7Tx30
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+aG9zdAgIb3BlcmF0b3IIA0tFWQgIiKpOEGT5ppz9AP0m/QD+DzE5NzAwMTAxVDAw
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+9A9xTrruZvh1CVsDEZy/LO0y+vMKihNwCassFJaocbPwNmZMCPVIAuK4dntNIt/l
+Z74Nh76JGmoMENOu/u2et9Kx/s2GJF9m1d6UhNJkYjA/dXUWICa4Dibcp1KzhRGH
+HjILzi6RGZQ0qmEd3EJ6KTw8CmHEDOTzT0nZIyYcmYbPTk3G+1UTgAsCZCr1QQtI
+rOQ+apPj3zW3GSMyLG1TrlrLXgbG8pKXon8hHgmMPSoVZlLfzVEB6MBBYEESZuDr
+/7lr56BZLwiygnFlPoUkyyczZ/UeDyFbNHMK2YMWPah1MTAfwN2t3S9sVA==
\ No newline at end of file
diff --git a/utils/NDNCertificationUtil.cpp b/utils/NDNCertificationUtil.cpp
index abfea81..435974d 100644
--- a/utils/NDNCertificationUtil.cpp
+++ b/utils/NDNCertificationUtil.cpp
@@ -57,10 +57,12 @@ int NDNCertificationUtil::installCert(const std::string &certStr, long lifetime,
     if (!forceUpdate && redisUtil.exist(cert.getName().toUri()) > 0) {
         return -2;
     }
-    std::cout << cert.getName() << std::endl;
+    std::cout << cert.getName() << " => " << certStr << std::endl;
     int result = redisUtil.set(cert.getName().toUri(), certStr) ? 0 : -3;
-    std::cout << "setLifetime: " << lifetime << std::endl << "result: "
-              << redisUtil.setLifeTime(cert.getName().toUri(), lifetime) << std::endl;
+    if (lifetime > 0) {
+        std::cout << "setLifetime: " << lifetime << std::endl << "result: "
+                  << redisUtil.setLifeTime(cert.getName().toUri(), lifetime) << std::endl;
+    }
     return result;
 }