opac.ntu.ac.uk

- opac.ntu.ac.uk -

Issued by

About this certificate

This digital certificate with serial number 06:1f:d0 was issued on by Equifax.

This 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. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


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opac.ntu.ac.uk

Organization: opac.ntu.ac.uk
Organization unit: businessprofile.geotrust.com/get.jsp?GT13029539
Organization unit: See www.geotrust.com/resources/cps (c)06
Organization unit: Domain Control Validated - QuickSSL Premium(R)
Country: GB

Equifax

Organization: Equifax
Organization unit: Equifax Secure Certificate Authority
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 06:1f:d0
Serial Number (int): 401360
Serial Number lenght: 19 bits, 3 octets

SubjectKeyId: 00:ab:5b:46:de:c7:9c:6f:02:39:1e:2c:ef:6b:b0:22:bd:47:4b:00
AuthorityKeyId: 48:e6:68:f9:2b:d2:b2:95:d7:47:d8:23:20:10:4f:33:98:90:9f:d4

Fingerprint (sha1): ac:46:e1:ff:52:61:79:44:b7:59:51:8a:49:17:38:ef:c5:49:8d:96
Fingerprint (sha256): 09:7f:02:46:5d:a0:86:d2:f8:f6:b7:f9:00:72:43:fd:b5:09:e4:89:0e:fa:44:2e:98:14:be:af:ec:9f:99:1e


Revocation information

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

Check the revocation status for certificate opac.ntu.ac.uk

0

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for opac.ntu.ac.uk

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

5 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

This certificate doesn't contain any subject alternative names.

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Certificate

The complete raw certificate details for opac.ntu.ac.uk in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvnf/aRf1GbceLPqGyoen
56SnFUorm0OPWODlSwaeAux9yKhMT7a8pdaAe1uD/a38wAFcobkd64//mOwF4CyZ
vw7YZBxKCtoveiadpTpXeuA6WTAlmgelN0rqeTYrhsqeVF0cxM3qJd0CiJoecd4q
duaKZl+wi/YherO3lfo/FEnSYnJbWH/cx0fpLf29DZRrg7uEuORwuXXbpn+Ww7wg
5bJhORmX8393IcbcXCr4YcIOOvYS+C9ia0ZNiCi+6PKwK1u9QTzLn456HrhpjxP0
B1qBXwF/7bVZvF3rX4JSMVpuCG8c4RXFGo+dz/XtMv1Q7+eJR18Oq8/j3HGSIcsI
YQIDAQAB
-----END PUBLIC KEY-----

ASN.1 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 401360
 . . . . . . . . [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 2006-08-25 16:07:37 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2007-08-26 16:07:37 +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 'GB'
 . . . . . . . . . . . . [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 'opac.ntu.ac.uk'
 . . . . . . . . . . . . [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 'businessprofile.geotrust.com/get.jsp?GT13029539'
 . . . . . . . . . . . . [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 'See www.geotrust.com/resources/cps (c)06'
 . . . . . . . . . . . . [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 'Domain Control Validated - QuickSSL Premium(R)'
 . . . . . . . . . . . . [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 'opac.ntu.ac.uk'
 . . . . . . . . [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 24044451013525350291666385705458161876983102956536549475831306441352815735831281094579986179518120307413987842472845075598070193059540618604140923991646136568159694614670001728618742223154671854503630125284178243383282311481105319322230768499853203542627957338608736024267148170772106766075800929202578809156444775575257831375634956985424621803054031742985550560125734301339759459207817349938521670601592328399231643277998604403102436918185764876981619548169785868722617793645222923366654835800985413949469587391761102656013507182563885739512059263729259654074398087523862434806587213186606284864728344396584574453857
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.15 (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 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							00ab5b46dec79c6f02391e2cef6bb022bd474b00
 . . . . . . . . . . . . . . . . [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 2.5.29.35 (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 2.5.29.37 (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 1.2.840.113549.1.1.5 (sha1WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (1024 bits)
		00249d1893f40ef8114af5c7ff12347d2d494e8ac8d7dcc1d0b9ae4728e380afc2f3bef106bcb4c2ddc10c750ab29f1cdf87e07cbdfb31b192c0d9faae39f5d50561a40fec7154a7af2ad74766b237760e995ac0c9b625dc1e8fb6894c19cb85601c97e92810a000239ce219d568b5ac74324918998b4b51ebc68def35ab9496ab