www.tcdrs.org

Issued by Verizon Public SureServer CA G14-SHA2

About this certificate


This digital certificate with serial number 42:27:db:84:2e:bd:a0:ad:7c:5b:00:99:09:f3:9f:fa:88:17:f3:c4 was issued on by Verizon Enterprise Solutions .

While the certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates.

Texas County and District Retirement System

Organization: Texas County and District Retirement System
State / Province: Texas
Locality: Austin
Country: US

Verizon Enterprise Solutions

Organization: Verizon Enterprise Solutions
Organization unit: Cybertrust
State / Province: Texas
Locality: Austin
Country: US

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 42:27:db:84:2e:bd:a0:ad:7c:5b:00:99:09:f3:9f:fa:88:17:f3:c4
Serial Number (int): 377682242507136682802664244847605517291005408196
Serial Number lenght: 159 bits, 20 octets

SubjectKeyId: 5e:56:ee:3a:f1:5c:12:f3:26:14:fe:b3:75:85:eb:58:5e:8d:11:bd
AuthorityKeyId: e4:2d:bb:91:01:65:26:1f:b4:7a:3f:a3:15:25:a4:ce:8c:44:33:3b

Fingerprint (sha1): d0:4a:42:2a:ea:6e:4c:44:93:67:9f:1d:cf:4c:83:1b:da:fe:1f:5a
Fingerprint (sha256): e6:42:a8:48:1c:ca:7a:e3:8d:a2:16:1a:a7:27:1a:87:4d:17:9c:1b:0f:5d:4e:09:dd:92:a1:ad:f7:2a:87:4c

Issuing Certificate URL: http://cacert.omniroot.com/vpssg142.crt
Issuing Certificate URL: http://cacert.omniroot.com/vpssg142.der

Revocation information

OCSP Server: http://vpssg142.ocsp.omniroot.com
CRL Distribution Point: http://vpssg142.crl.omniroot.com/vpssg142.crl

Check the revocation status for the current certificate on www.tcdrs.org
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details about this certificate


Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA



Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions



CA Certificate

This is not a CA certificate

Subject Alternative Names

This certificate doesn't contain any other subject alternative names besides the common name of the subject: www.tcdrs.org

Certificate

The complete raw certificate details in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIFbzCCBFegAwIBAgIUQifbhC69oK18WwCZCfOf+ogX88QwDQYJKoZIhvcNAQEL BQAwgY0xCzAJBgNVBAYTAk5MMRIwEAYDVQQHEwlBbXN0ZXJkYW0xJTAjBgNVBAoT HFZlcml6b24gRW50ZXJwcmlzZSBTb2x1dGlvbnMxEzARBgNVBAsTCkN5YmVydHJ1 c3QxLjAsBgNVBAMTJVZlcml6b24gUHVibGljIFN1cmVTZXJ2ZXIgQ0EgRzE0LVNI QTIwHhcNMTUwNzA5MjA0NTIyWhcNMTYwNzA5MjA0NTE4WjB8MQswCQYDVQQGEwJV UzEOMAwGA1UECBMFVGV4YXMxDzANBgNVBAcTBkF1c3RpbjE0MDIGA1UEChMrVGV4 YXMgQ291bnR5IGFuZCBEaXN0cmljdCBSZXRpcmVtZW50IFN5c3RlbTEWMBQGA1UE AxMNd3d3LnRjZHJzLm9yZzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB AOZH3XDDo4dWa4wx/OOb+IqnRd90Z1IXPM4v4moQ4T0iZkJaJrwRBsyf3BZbaCWR fshGN6yxkDVJZTWBpavqJogGkS/BV7UF3mPzIqvCsvdjTppD3wawzxqgLNxI0WBO 0RFwzUboH40jmBIhWG5xQkMcNBHCyLs4HQOkkQhroK1bHhRlrj7/Mok6lGJeMt7F 1bXzn8f0/seS0hHLoyG2D5qVCdrKKBn2HfERjHjz8/yi+k39M/fCcRHS94adFjHU S5+rj2no6M1+Z1LfZFNe4F/WIS78mkJThu2MpOsTbrhMvk59sllDY1Je5ld+FjOv nu1YDhpzqLi/VXez4SiW2qsCAwEAAaOCAdUwggHRMAwGA1UdEwEB/wQCMAAwTAYD VR0gBEUwQzBBBgkrBgEEAbE+ATIwNDAyBggrBgEFBQcCARYmaHR0cHM6Ly9zZWN1 cmUub21uaXJvb3QuY29tL3JlcG9zaXRvcnkwgakGCCsGAQUFBwEBBIGcMIGZMC0G CCsGAQUFBzABhiFodHRwOi8vdnBzc2cxNDIub2NzcC5vbW5pcm9vdC5jb20wMwYI KwYBBQUHMAKGJ2h0dHA6Ly9jYWNlcnQub21uaXJvb3QuY29tL3Zwc3NnMTQyLmNy dDAzBggrBgEFBQcwAoYnaHR0cDovL2NhY2VydC5vbW5pcm9vdC5jb20vdnBzc2cx NDIuZGVyMBgGA1UdEQQRMA+CDXd3dy50Y2Rycy5vcmcwDgYDVR0PAQH/BAQDAgWg MB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAfBgNVHSMEGDAWgBTkLbuR AWUmH7R6P6MVJaTOjEQzOzA+BgNVHR8ENzA1MDOgMaAvhi1odHRwOi8vdnBzc2cx NDIuY3JsLm9tbmlyb290LmNvbS92cHNzZzE0Mi5jcmwwHQYDVR0OBBYEFF5W7jrx XBLzJhT+s3WF61hejRG9MA0GCSqGSIb3DQEBCwUAA4IBAQBW+/DSb4DX9TQbmFPJ jx15fxq67mEJcToZWf5ZmZY1A34rrEwTLSCvuU0pYga9QCAOucXTABvmZNWDBknT G/LeZBZs7BrZ2MYaon7Eo5L2Ta963OpAWcsHltZHhK1UPhDzwfCrY231V4+U068+ l+9NeVy7xWDPxEddMiM3wE9Dw4CZDeaJzUlAkgtGrFfZDpdhQa2aWmPFUWrpRa5s SoInvx9OdGs3COCIOFCBU4aU8+fU85RHVdcdaXi0Q0u5uKUq2w1H+NahihjLJnEj l364FdHLaCuNmohP4KvC2JUnzSP/6qPRo57ke4ZMVedhESbomDtqo1RQVOg2Lfu9 7bui -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5kfdcMOjh1ZrjDH845v4 iqdF33RnUhc8zi/iahDhPSJmQlomvBEGzJ/cFltoJZF+yEY3rLGQNUllNYGlq+om iAaRL8FXtQXeY/Miq8Ky92NOmkPfBrDPGqAs3EjRYE7REXDNRugfjSOYEiFYbnFC Qxw0EcLIuzgdA6SRCGugrVseFGWuPv8yiTqUYl4y3sXVtfOfx/T+x5LSEcujIbYP mpUJ2sooGfYd8RGMePPz/KL6Tf0z98JxEdL3hp0WMdRLn6uPaejozX5nUt9kU17g X9YhLvyaQlOG7Yyk6xNuuEy+Tn2yWUNjUl7mV34WM6+e7VgOGnOouL9Vd7PhKJba qwIDAQAB -----END PUBLIC KEY-----

ASN1 Decoded

[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 377682242507136682802664244847605517291005408196 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'NL' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Amsterdam' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Verizon Enterprise Solutions' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Cybertrust' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Verizon Public SureServer CA G14-SHA2' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-07-09 20:45:22 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-07-09 20:45:18 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Texas' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Austin' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Texas County and District Retirement System' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.tcdrs.org' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 29070248095418687155057637159593074144528016540076596213943887059035873883787770239118678738285639789223999799417459340650744027864709691268482937336446170521303616643814934495066533908077464900284236935621735455007565175653630067316641261922674483172763699944480182843891490051829943595828147973380361161382465868063700544042780398851896165691192715408445065338516676875830581532153212882214324619059543861172372774544227791037694547393159849109316105628798089375534305394358434677810965273429131909166510266621238723305561639007942634760554800907680650246882380689550690216038602709158363225368801884341829673343659 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6334.1.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://secure.omniroot.com/repository' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (156 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://vpssg142.ocsp.omniroot.com' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cacert.omniroot.com/vpssg142.crt' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cacert.omniroot.com/vpssg142.der' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (17 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.tcdrs.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName e42dbb910165261fb47a3fa31525a4ce8c44333b . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (55 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://vpssg142.crl.omniroot.com/vpssg142.crl' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 5e56ee3af15c12f32614feb37585eb585e8d11bd . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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