Could always just contact
ATT - Florham Park, NJ and ask them? I haven't got a clue what it all means.
Version V3
Serial Number 2319 D5CF 0000 0000 0045
Signature Algorithm sha1RSA
Issuer ATT, Research, Labs, Florham Park, NJ, US,
administrator@research.att.com
Valid From Wednesday, March 29, 2006 8:21:45 AM
Valid To Friday, March 28, 2008 8:21:45 AM
Subject
root@mailman.research.att.com, mailman.research.att.com, Research, AT&T Labs, Florham Park, NJ, US
Public Key RSA (1024 Bits)
Subject Key Identifier 90A9 FC8A F684 F21A DC49 CCF2 B399 48C2 8B1D 09BA
Authority Key Identifier KeyID=4B53 B79E BD1F 174A B4D9 1372 4440 F110 DE1F 75D5
CRL Distribution Points [1]CRL Distribution Point: Distribution Point Name:Full Name:URL=ldap:///CN=ATT,CN=njfpsrv02,CN=CDP,CN=Public%20Key%20Services,CN=Services,CN=Config uration,DC=research,DC=att,DC=com?certificateRevocationList?base?objectClas s=cRLDistributionPoint, URL=http://njfpsrv02.research.att.com/CertEnroll/ATT.crl
Authority Information Access [1]Authority Info Access: AccessMethod=Certification Authority Issuer(1.3.6.1.5.5.7.48.2), Alternative Name=URL=ldap:///CN=ATT,CN=AIA,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=re search,DC=att,DC=com?cACertificate?base?objectClass=certificationAuthority, [2]Authority Info Access: AccessMethod=Certification Authority Issuer(1.3.6.1.5.5.7.48.2), Alternative Name=URL=http://njfpsrv02.research.att.com/CertEnroll/njfpsrv02.research.att.com_ATT.crt
Certificate Template 1E12 0057 0065 0062 0053 0065 0072 0076 0065 0072
Key Usage Digital Signature, Key Encipherment(A0)
Enhanced Key Usage Server Authentication(1.3.6.1.5.5.7.3.1)
Basic Constraints Subject Type=End Entity, Path Length Constraint=None
Thumbprint Algorithm sha1
Thumbprint 7DC9 747A 3ACA 3BFD 04D6 E3AE FA81 88C0 57D0 A396