DER encoding: in Certificate::printCertificate, print the time ISO string.
diff --git a/ndn-cpp/security/certificate/certificate.cpp b/ndn-cpp/security/certificate/certificate.cpp
index 9047a70..b404a1f 100644
--- a/ndn-cpp/security/certificate/certificate.cpp
+++ b/ndn-cpp/security/certificate/certificate.cpp
@@ -126,8 +126,8 @@
Certificate::printCertificate()
{
cout << "Validity:" << endl;
- cout << notBefore_ << endl;
- cout << notAfter_ << endl;
+ cout << der::DerGtime::toIsoString(notBefore_) << endl;
+ cout << der::DerGtime::toIsoString(notAfter_) << endl;
cout << "Subject Info:" << endl;
vector<CertificateSubjectDescription>::iterator it = subjectDescriptionList_.begin();