DV SSL/TLS Certificate for eclass.skhlkmss.edu.hk

Certificate is witin its validity period

Issued by Sectigo Limited (Sectigo RSA Domain Validation Secure Server CA)

About the eclass.skhlkmss.edu.hk DV SSL/TLS Certificate

This certificate with serial number c4:11:88:bf:19:43:56:44:41:da:5c:6b:85:34:67:a6 for eclass.skhlkmss.edu.hk was issued on by Sectigo Limited.

This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for eclass.skhlkmss.edu.hk provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Sectigo Limited

Organization: Sectigo Limited
State / Province: Greater Manchester
Locality: Salford
Country: GB

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): c4:11:88:bf:19:43:56:44:41:da:5c:6b:85:34:67:a6
Serial Number (int): 260619729768542270668586476894430717862
Serial Number Length: 128 bits, 16 octets

Subject Key Identifier: 93:15:44:3d:8b:52:81:41:7e:6d:d5:2b:84:d9:e5:3b:e3:38:b9:f9
Authority Key Identifier: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1

Fingerprint (SHA-1): ae:d0:85:89:45:fb:2b:01:ea:b8:66:da:6c:3b:2c:16:11:0e:5d:32
Fingerprint (SHA-256): 42:53:de:1c:ed:67:32:f2:5c:dd:03:65:91:f4:56:9b:64:41:2b:7a:f5:51:a6:a2:c5:68:2f:fd:0e:90:fb:4d

Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt

Revocation Information

OCSP Server: http://ocsp.sectigo.com

Check the revocation status for certificate eclass.skhlkmss.edu.hk
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for eclass.skhlkmss.edu.hk

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9
CA Certificate
This is not a CA certificate

Subject Alternative Names

eclass.skhlkmss.edu.hk

X.509 Certificate

The complete raw X.509 certificate details for eclass.skhlkmss.edu.hk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtj9icM+8cx1YeROJvpvI
WND72Cg4wTErq1OAeHE65xOxFbjpWAsvnEyOdjIwuTDU9kFGwPTwmvVkf6oy/lvi
ydw8Jnayr8pUoKRXZ/jJdKyevLEEjzxS8SA9Ri5af7f3NKMAjBwbFkytJwiI8xXz
ltzG8ez277x7ch/zAN6bbSOLCCqd3AdchJoeRtSOAobBhEoAsZ6db31lik6atJz6
KExblWqCDX1ujXY5bNFpb5ss7QwGaxslFoWmdL4KICEA2Hy76KXG2Cr0qNRhbZ+V
DX5oWtoeyhJ4Nn94hTuZY49VYMVl1qwzi/btpDiu97XrwXcGh14IAV6b5aicnkb7
5QIDAQAB
-----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 260619729768542270668586476894430717862
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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 2.5.4.8
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Greater Manchester'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Salford'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo Limited'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Sectigo RSA Domain Validation Secure Server CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-11-21 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-12-21 23:59:59 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'eclass.skhlkmss.edu.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
 . . . . . . . . . . . . . . . . [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 23006627582402199550720852659345054772906172274183897160002176637423283296745050305185807907778296383505512462108689891148240001127007120842178216060826951125715457673520680516301779686627490283004521879477036386317859582565050080493889448084278215849305982252574795567754587004331877043755390489460218065335201602672604421142693017192691811761247792519975480012985670223553888310730157783309419400964076828515072730809815968075466970734058187189298786211795204693624369560366507778459680687643851084519253398631502025480918824579538360179313786539437136990221101338948183249223314170157421141859242134585024641956837
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							9315443d8b5281417e6dd52b84d9e53be338b9f9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://sectigo.com/CPS'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.sectigo.com'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'eclass.skhlkmss.edu.hk'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (366 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (362 bytes)
							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
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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