hohcs.org.hk

Issued by Starfield Secure Certificate Authority - G2

About this certificate

This digital certificate with serial number b3:e3:c8:36:8d:7c:0e:9b was issued on by Starfield Technologies, Inc..

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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)

Certificate Subject

CN=hohcs.org.hk,OU=Domain Control Validated

Starfield Technologies, Inc.

Organization: Starfield Technologies, Inc.
Organization unit: http://certs.starfieldtech.com/repository/
State / Province: Arizona
Locality: Scottsdale
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): b3:e3:c8:36:8d:7c:0e:9b
Serial Number (int): 12962424289129926299
Serial Number lenght: 64 bits, 8 octets

SubjectKeyId: 74:48:52:ed:0f:7c:d6:93:e2:22:6a:ee:5a:4d:44:90:9f:2c:e1:d7
AuthorityKeyId: 25:45:81:68:50:26:38:3d:3b:2d:2c:be:cd:6a:d9:b6:3d:b3:66:63

Fingerprint (sha1): ef:c8:af:73:8a:17:0c:2a:e9:48:5e:b4:c0:c0:ae:85:f1:31:1a:3b
Fingerprint (sha256): 28:ec:a7:a4:f0:6a:1b:a4:9d:c2:d0:78:24:a6:46:c4:08:db:9e:a2:90:5e:84:aa:73:6a:de:f1:7f:34:4b:ae

Issuing Certificate URL: http://certificates.starfieldtech.com/repository/sfig2.crt

Revocation information

OCSP Server: http://ocsp.starfieldtech.com/
CRL Distribution Point: http://crl.starfieldtech.com/sfig2s1-31.crl

Check the revocation status for certificate hohcs.org.hk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for hohcs.org.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

hohcs.org.hk
www.hohcs.org.hk

Other certificates including the domain name hohcs.org.hk

(limited to 100 certificates)

Certificate

The complete raw certificate details for hohcs.org.hk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7vy5LoIRKMAZ5saIx6xZ
iYFA57zQRQGFY0IZQiQZr6lrFlJY3AkuhH8ZaRJsk7Ct9CFd1o3esBIX+GWoxECI
3FIK1ET4cqwFa+dpleF6jhGJ8isYNqAU2BOSP+SepLHBMYbHpaJL6fkiytqIlVN5
xm4s5KIbJHyjyKsdaMgq3pdRxoB3/2NHRiL41/YmhbexOS0oqGv5Mmrl4Ekohz97
uRtELaOr7DUuZn2lBIPjg6oomo9n13xm+a0IRmupAB7hbHcJlVLPMRduNxVOmQlw
yq24t8FgcchsVIcke9BbTG6q7XV2P9P8rc0FSJbD1pHrH8U+Z0D0tWGct5h0V2Ye
nQIDAQAB
-----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 12962424289129926299
 . . . . . . . . [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 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Arizona'
 . . . . . . . . . . . . [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 'Scottsdale'
 . . . . . . . . . . . . [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 'Starfield Technologies, 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 'http://certs.starfieldtech.com/repository/'
 . . . . . . . . . . . . [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 'Starfield Secure Certificate Authority - G2'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-07-04 18:36:38 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-07-04 18:36:38 +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 2.5.4.11 (organizationalUnitName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Domain Control Validated'
 . . . . . . . . . . . . [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 'hohcs.org.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 30169339118396184695016360146055222487039969406200570435518160330203668537581502603210143455543788819978894706844976937848860006636098440582019046300810863986258650408053003653838868581986427418999404347553345543175752833266746937386461064245118237764186475325943830089662657902267046084217081464101677515973254023524479447603331591022486010222094433819759034316997605824661824368753196994198188426158577990088296152381821095649016991471407523685436890055902597596609876302183792732772481482945001968673855030255247815650356996707434474769207986691101448528151176162853173235706108775104888540802459684036692568055453
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.37 (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 2.5.29.15 (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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (53 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.starfieldtech.com/sfig2s1-31.crl'
 . . . . . . . . . . . . . . . . [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 (92 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.840.1.114414.1.7.23.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'http://certificates.starfieldtech.com/repository/'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (118 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://ocsp.starfieldtech.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://certificates.starfieldtech.com/repository/sfig2.crt'
 . . . . . . . . . . . . . . . . [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 254581685026383d3b2d2cbecd6ad9b63db36663
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hohcs.org.hk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.hohcs.org.hk'
 . . . . . . . . . . . . . . . . [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)
							744852ed0f7cd693e2226aee5a4d44909f2ce1d7
 . . . . [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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