tt.med.hku.hk

Issued by GeoTrust DV SSL CA - G4

About this certificate

This digital certificate with serial number 02:c1:c9 was issued on by GeoTrust Inc..

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.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
  • Sub certificates SHOULD include Subject Key Identifier in end entity certs (RFC 5280: 4.2 & 4.2.1.2)

Certificate Subject

CN=tt.med.hku.hk

GeoTrust Inc.

Organization: GeoTrust Inc.
Organization unit: Domain Validated SSL
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 02:c1:c9
Serial Number (int): 180681
Serial Number lenght: 18 bits, 3 octets

SubjectKeyId:
AuthorityKeyId: 0b:50:ec:77:ef:2a:9b:ff:ec:03:a1:0a:ff:ad:c6:e4:2a:18:c7:3e

Fingerprint (sha1): de:56:a5:fe:14:96:bf:7e:75:cf:17:33:ca:54:b5:01:6f:29:f8:ee
Fingerprint (sha256): 00:0a:c0:f9:a1:2f:bb:f2:ee:2b:64:78:4a:ac:34:c4:41:ea:07:2a:01:49:b8:7b:ca:40:f6:4a:a1:52:e9:7d

Issuing Certificate URL: http://gu.symcb.com/gu.crt

Revocation information

OCSP Server: http://gu.symcd.com
CRL Distribution Point: http://gu.symcb.com/gu.crl

Check the revocation status for certificate tt.med.hku.hk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tt.med.hku.hk

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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

tt.med.hku.hk

Other certificates including the domain name hku.hk

(limited to 100 certificates)
icmpe.hku.hk
tt.med.hku.hk
www.smarter.hku.hk
matpp.hku.hk
french.hku.hk
onlinesurvey.cetl.hku.hk
hkumockup7.its.hku.hk
itsvpn.hku.hk
apps.saas.hku.hk
mail02.tto.hku.hk
sofea.jmsc.hku.hk
www.oncology.hku.hk
www.hkuspace.hku.hk
swire.hku.hk
kl.biosch.hku.hk
www.bocsoc.hkusu.hku.hk
www.upo.hkusu.hku.hk
rc.ortho.hku.hk
www.shhorms.hku.hk
hkumockup.its.hku.hk
cbh.hku.hk
cms.its.hku.hk
hkupop.hku.hk
*.edu.hku.hk
www.ctc.hku.hk
www.lacrosse.hkusu.hku.hk
community.cs.hku.hk
paed.hku.hk
sis-eportal.hku.hk
www.eti.hku.hk
talent.hku.hk
www.mathsoc.hkusu.hku.hk
www.biosch.hku.hk
www.radiology.hku.hk
gradhse.hku.hk
sctc.nursing.hku.hk
www.icahkusu.hkusu.hku.hk
www.hkuspace.hku.hk
bohr.physics.hku.hk
hkumockup6.its.hku.hk
www.summerals.hku.hk
www.cetl.hku.hk
shs.history.hku.hk
sis-eportal.hku.hk
www.sustainability.hku.hk
qlikprod.hku.hk
hkumockup4.its.hku.hk
www.lingsoc.hkusu.hku.hk
antibody.hku.hk
clc.hku.hk
diastemas.edu.hku.hk
www.sass.hkusu.hku.hk
asiaglobalinstitute.hku.hk
aprmay97.sph.hku.hk
meetingofminds.hku.hk
ug.hku.hk
www.cchkusu.hkusu.hku.hk
hkufeo2.hku.hk
hkumockup20.its.hku.hk
infoday.hku.hk
www.sportsoc.hkusu.hku.hk
ediblespaces.hku.hk
app04.teli.hku.hk
newgrads.alumni.hku.hk
web.cetl.hku.hk
fintechindex.hku.hk
www.ppaa.hkusu.hku.hk
hkumockup11.its.hku.hk
stickers.uvision.hku.hk
www.ramblers.hkusu.hku.hk
panda.sph.hku.hk
role.hku.hk
hkumockup22.its.hku.hk
oyphku.hku.hk
login.alumni.hku.hk
stickers.uvision.hku.hk
*.atlab.hku.hk
easytraining.psychiatry.hku.hk
gingerbread.uvision.hku.hk
blink.psychiatry.hku.hk
amr.hku.hk
eim.cse.hku.hk
www.edusoc.hkusu.hku.hk
foaintranet.ad.arch.hku.hk
learning.hku.hk
www2.jmsc.hku.hk
finearts.hku.hk
pchiu.chemistry.hku.hk
www.buddhistlibsearch.hku.hk
hkumockup6.its.hku.hk
hku-utokyo-summer.hku.hk
www2.cetl.hku.hk
bpyloo.hku.hk
hkumockup14.its.hku.hk
hkumockup29.its.hku.hk
ihss.hku.hk
campus.ageing.hku.hk
fintechindex.hku.hk
apps.edu.hku.hk
matpp.hku.hk

Certificate

The complete raw certificate details for tt.med.hku.hk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtiIupDuGW+2AzI4+BzCd
4IkGrNFyaupSmZ9Hqqws+llVG9Cp0jsjHo+Gg7vdCk9WapV3mzy8y8fC8F66NLn7
IHMoDVMar8od9jjbrO0J4NXXnG9WA5U/pXL1VQqAMcnbeR91HTgIEPUS7pswQucj
rni7ZEsBrs/UFF1jE5rxlVoDK4BT4Ogk0QvDS6FXN/2e/47CzB/3iiZgo9A1flhs
3GgZOD0XA9BqwD24/NrYkX2i7m4tG6y9zvDZnNVp8REHM8uQLy6DxRpQSKh2dQCt
f0Ki3rZaIsUoc6jLtA5HMu9rveJ/hiL0b9Uoy9OYsyo/SdsZM3yOvehf1lpwZ0+i
6wIDAQAB
-----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 180681
 . . . . . . . . [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 '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 'GeoTrust Inc.'
 . . . . . . . . . . . . [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 Validated SSL'
 . . . . . . . . . . . . [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 'GeoTrust DV SSL CA - G4'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-12-07 13:21:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-12-08 09:45:48 +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 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'tt.med.hku.hk'
 . . . . . . . . [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 22992227371659071814915073057660386955176956483881608812237646027851219738471311685429128794608403710613904931201147736907323656665160062799026020675494479703562552526549173245114958091962486980043355137561154023003086000209164832551450220923841268001006697963759014181443194905694118814422586367900136203180222730638927597398048166613079149209287180392316134744467797199453538777771350872557405469218794081290230810289785945349825073528538021700229145704333189355196054041093215626245837405487108816748400355611671022755897432763297667736298775472550767313055102878065540022422295395433231246054926925302229443257067
 . . . . . . . . . . . . . . . . . . . . [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 0b50ec77ef2a9bffec03a10affadc6e42a18c73e
 . . . . . . . . . . . . . . . . [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 (75 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://gu.symcd.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://gu.symcb.com/gu.crt'
 . . . . . . . . . . . . . . . . [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 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tt.med.hku.hk'
 . . . . . . . . . . . . . . . . [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 (36 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://gu.symcb.com/gu.crl'
 . . . . . . . . . . . . . . . . [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 (79 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://www.geotrust.com/resources/repository/legal'
 . . . . [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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