www.cs.duke.edu

Issued by

About this certificate


This digital certificate with serial number 13:8c:2b was issued on by Equifax .

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Cerificate errors/warnings *beta

  • ERROR: Certificate contains no Authority Info Access Issuers
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Duke University

Company registration number: ARp20gUxPu6a5Nwr39M-mxaz3/va4AyD
Organization: Duke University
Organization unit: Department of Computer Science
State / Province: North Carolina
Locality: Durham
Country: US

Equifax

Organization: Equifax
Organization unit: Equifax Secure Certificate Authority
State / Province: North Carolina
Locality: Durham
Country: US

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 13:8c:2b
Serial Number (int): 1281067
Serial Number lenght: 21 bits, 3 octets

SubjectKeyId: 2e:4e:3f:78:84:c9:da:01:77:01:2d:25:72:41:95:f3:18:77:de:ff
AuthorityKeyId: 48:e6:68:f9:2b:d2:b2:95:d7:47:d8:23:20:10:4f:33:98:90:9f:d4

Fingerprint (sha1): e0:8b:4b:40:45:31:d7:b3:fe:b0:ec:88:a1:74:66:96:92:9a:dc:5e
Fingerprint (sha256): e4:e1:97:6d:67:b5:ad:e6:15:a2:86:d4:8b:0f:d4:f8:a5:38:18:0d:a0:3b:02:89:64:70:89:b7:4a:57:e1:1c


Revocation information

CRL Distribution Point: http://crl.geotrust.com/crls/secureca.crl

Check the revocation status for the current certificate on www.cs.duke.edu
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

SHA1 with RSA



Key Usage

Digital Signature
Content Commitment
Key Encipherment
Data Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

6 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.cs.duke.edu

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIID1TCCAz6gAwIBAgIDE4wrMA0GCSqGSIb3DQEBBQUAME4xCzAJBgNVBAYTAlVT MRAwDgYDVQQKEwdFcXVpZmF4MS0wKwYDVQQLEyRFcXVpZmF4IFNlY3VyZSBDZXJ0 aWZpY2F0ZSBBdXRob3JpdHkwHhcNMTAwNjIzMDgwMjQ1WhcNMTUwNzI0MjMxNzA3 WjCBvzEpMCcGA1UEBRMgQVJwMjBnVXhQdTZhNU53cjM5TS1teGF6My92YTRBeUQx CzAJBgNVBAYTAlVTMRcwFQYDVQQIEw5Ob3J0aCBDYXJvbGluYTEPMA0GA1UEBxMG RHVyaGFtMRgwFgYDVQQKEw9EdWtlIFVuaXZlcnNpdHkxJzAlBgNVBAsTHkRlcGFy dG1lbnQgb2YgQ29tcHV0ZXIgU2NpZW5jZTEYMBYGA1UEAxMPd3d3LmNzLmR1a2Uu ZWR1MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5JGafxwKCS77RQcV WjhQIL2emQYSiavR27uZPZaQpJkvz1bG0qFGgIW2G//ghTL1tf7fsB2mU4nB6+m7 t1X1XysE+sf6lb44+tRKWECuU7k9LDMT91AWK/Z3HkJQ+i4jwXmLNrPgTM6K+ZBT n7u06wVhMysJjdx45cS9oG3hoa0E5Pwu2Flf2pGwRAoCFW6eYUROGrQq0jFPVS3h GCAJ5Bvc1AEG3qyd6H+MJZOYwr5dyanXMB/D0OLKjHsyoZs+S8HMLGNNgfmkk3mT l+ai7cRjJEn5IMcRmVQcNB1mDq9+uUe8YHRlip+hj/kXLnxyiyVrzZIIrjLcyZqw GR7ZJQIDAQABo4HKMIHHMB8GA1UdIwQYMBaAFEjmaPkr0rKV10fYIyAQTzOYkJ/U MA4GA1UdDwEB/wQEAwIE8DAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIw GgYDVR0RBBMwEYIPd3d3LmNzLmR1a2UuZWR1MDoGA1UdHwQzMDEwL6AtoCuGKWh0 dHA6Ly9jcmwuZ2VvdHJ1c3QuY29tL2NybHMvc2VjdXJlY2EuY3JsMB0GA1UdDgQW BBQuTj94hMnaAXcBLSVyQZXzGHfe/zANBgkqhkiG9w0BAQUFAAOBgQCta8ypHj+X VhZEjTHdI06UuKRJI9Jx7U5eitAITT9ZRjoooLY8yMguhEC4n0WdUR8tnr9hAOnl PyGSnzTasZnfr6IuN7WZ3kCJ+czsaOf4BS9GMnGZ9CeRhYuSPQdXzOn6tmmwXkyf 5rH9TIt3k5SZZEX5NGwdy4twrG+jL9UTdw== -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5JGafxwKCS77RQcVWjhQ IL2emQYSiavR27uZPZaQpJkvz1bG0qFGgIW2G//ghTL1tf7fsB2mU4nB6+m7t1X1 XysE+sf6lb44+tRKWECuU7k9LDMT91AWK/Z3HkJQ+i4jwXmLNrPgTM6K+ZBTn7u0 6wVhMysJjdx45cS9oG3hoa0E5Pwu2Flf2pGwRAoCFW6eYUROGrQq0jFPVS3hGCAJ 5Bvc1AEG3qyd6H+MJZOYwr5dyanXMB/D0OLKjHsyoZs+S8HMLGNNgfmkk3mTl+ai 7cRjJEn5IMcRmVQcNB1mDq9+uUe8YHRlip+hj/kXLnxyiyVrzZIIrjLcyZqwGR7Z JQIDAQAB -----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 1281067 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . . . . . [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 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Equifax' . . . . . . . . . . . . [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 'Equifax Secure Certificate Authority' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2010-06-23 08:02:45 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-07-24 23:17:07 +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 2.5.4.5 (serialNumber) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'ARp20gUxPu6a5Nwr39M-mxaz3/va4AyD' . . . . . . . . . . . . [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 'North Carolina' . . . . . . . . . . . . [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 'Durham' . . . . . . . . . . . . [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 'Duke University' . . . . . . . . . . . . [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 'Department of Computer Science' . . . . . . . . . . . . [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.cs.duke.edu' . . . . . . . . [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 28854133295129855102008419335325723582016807763928764375523105993844722650879235968134887926717316553924248991243147642062788344300792953742482025254963821568956299993018106862085037077623065562880690830476499508947408919873261807556134138523891826211639492931421951080939055614928515095778300743464034648832613368611189803416875600084151682670525660591873596066135309711143482755817127615312966568179440500355803077173139771160722262826299548592204610617630889192898540425679639402196987503778029419393516308987902974701712805502376256172958919137434166391330828358970301441813963043911779694851473606782519546403109 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 48e668f92bd2b295d747d82320104f3398909fd4 . . . . . . . . . . . . . . . . [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 (4 bits) 04f0 . . . . . . . . . . . . . . . . [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 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (19 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cs.duke.edu' . . . . . . . . . . . . . . . . [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 (51 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://crl.geotrust.com/crls/secureca.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) 2e4e3f7884c9da0177012d25724195f31877deff . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (1024 bits) 00ad6bcca91e3f975616448d31dd234e94b8a44923d271ed4e5e8ad0084d3f59463a28a0b63cc8c82e8440b89f459d511f2d9ebf6100e9e53f21929f34dab199dfafa22e37b599de4089f9ccec68e7f8052f46327199f42791858b923d0757cce9fab669b05e4c9fe6b1fd4c8b779394996445f9346c1dcb8b70ac6fa32fd51377