Certificats Terena : chaîne de certification
subject= /C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
subject= /C=US/ST=UT/L=Salt Lake City/O=The USERTRUST Network/OU=http://www.usertrust.com/CN=UTN-USERFirst-Hardware
subject= /C=NL/O=TERENA/CN=TERENA SSL CA
