www.ilc.cuhk.edu.hk

Issued by Hongkong Post e-Cert CA 1 - 14

About this certificate


This digital certificate with serial number 2a:30:e9:3c:70:95:20:3f:5a:55:16:8f:a2:9c:9b:a6:4b:87:30:de was issued on by Hongkong Post .

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com.

Cerificate errors/warnings *beta

  • ERROR: localityName or stateOrProvinceName is required if organizationName is set
  • ERROR: stateOrProvinceName is required if organizationName is set

Hongkong Post e-Cert (Server)

Organization: Hongkong Post e-Cert (Server)
Organization unit: 0001970323
Organization unit: 000000000000000000000000CUHK-CHAPTER-1109-ILC
Organization unit: THE CHINESE UNIVERSITY OF HONG KONG
Organization unit: THE INDEPENDENT LEARNING CENTRE
Country: HK

Hongkong Post

Organization: Hongkong Post
Country: HK

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Certificate Details

Serial Number (hex): 2a:30:e9:3c:70:95:20:3f:5a:55:16:8f:a2:9c:9b:a6:4b:87:30:de
Serial Number (int): 240868365873342687138632566969899846497506635998
Serial Number lenght: 158 bits, 20 octets

SubjectKeyId: 45:60:d6:f5:65:eb:75:c1:dc:b5:5a:ae:aa:d9:9a:24:1b:a4:e7:88
AuthorityKeyId: 5b:37:7d:2d:b2:98:96:27:92:f7:1a:44:fc:37:a6:93:9e:5d:50:e4

Fingerprint (sha1): 4a:06:ee:d7:62:04:d8:2d:3d:ff:6c:aa:57:06:34:56:61:e0:30:70
Fingerprint (sha256): d1:9c:80:f9:2e:ca:54:ec:ce:d0:1c:00:07:44:86:87:6c:97:61:64:0f:0b:d7:9d:d9:98:9f:71:64:45:97:f9

Issuing Certificate URL: http://www1.hongkongpost.gov.hk/root/ecert_ca_1-14.crt

Revocation information

CRL Distribution Point: http://crl1.hongkongpost.gov.hk/crl/eCertCA1-14CRL1.crl

Check the revocation status for the current certificate on www.ilc.cuhk.edu.hk
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

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

This certificate doesn't contain any other subject alternative names besides the common name of the subject: www.ilc.cuhk.edu.hk

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIFUzCCBDugAwIBAgIUKjDpPHCVID9aVRaPopybpkuHMN4wDQYJKoZIhvcNAQEL BQAwTjELMAkGA1UEBhMCSEsxFjAUBgNVBAoTDUhvbmdrb25nIFBvc3QxJzAlBgNV BAMTHkhvbmdrb25nIFBvc3QgZS1DZXJ0IENBIDEgLSAxNDAeFw0xNTA0MTQwNzEx MzhaFw0xODA0MTQwNzExMzhaMIH4MQswCQYDVQQGEwJISzEmMCQGA1UEChMdSG9u Z2tvbmcgUG9zdCBlLUNlcnQgKFNlcnZlcikxEzARBgNVBAsTCjAwMDE5NzAzMjMx NjA0BgNVBAsTLTAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMENVSEstQ0hBUFRFUi0x MTA5LUlMQzEsMCoGA1UECxMjVEhFIENISU5FU0UgVU5JVkVSU0lUWSBPRiBIT05H IEtPTkcxKDAmBgNVBAsTH1RIRSBJTkRFUEVOREVOVCBMRUFSTklORyBDRU5UUkUx HDAaBgNVBAMTE3d3dy5pbGMuY3Voay5lZHUuaGswggEiMA0GCSqGSIb3DQEBAQUA A4IBDwAwggEKAoIBAQDC5TC4HHGq6MgQP2asQOKqaiATsQwMAmkCUqtK5dzAv5r6 RRR8idWjRuvr5yF2tdQ15AMcvPCLctMhsfaHrul9rEmwUyRDHYPjae+XgIE91Fs6 9TLvfoyvKJqNp+vN+wrMxJDNWFzzUs0j+b0W34XbM8DdODLCSMue58XK0YlXf9WG WpkIG2sICfbtd2rt75F03Txlhk1Ptk2Td4mF/dlTwSu0Dn8ekFd3n7O//jD92O/L NqI8LdGsWb/mPxXYulSsypFZlvbJVNuHwvS0bP/4FUg7Zr/T8o+X1AeD8jEzSHDg YMyt6XFA561AgZtVRoc8k4YOuXuyqdR9PgskMPkNAgMBAAGjggF8MIIBeDA+BgNV HSAENzA1MDMGCisGAQQB/R4BAR4wJTAjBggrBgEFBQcCARYXd3d3Lmhvbmdrb25n cG9zdC5nb3YuaGswHgYDVR0RBBcwFYITd3d3LmlsYy5jdWhrLmVkdS5oazAJBgNV HRMEAjAAMFIGCCsGAQUFBwEBBEYwRDBCBggrBgEFBQcwAoY2aHR0cDovL3d3dzEu aG9uZ2tvbmdwb3N0Lmdvdi5oay9yb290L2VjZXJ0X2NhXzEtMTQuY3J0MA4GA1Ud DwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwHwYDVR0j BBgwFoAUWzd9LbKYlieS9xpE/Demk55dUOQwSAYDVR0fBEEwPzA9oDugOYY3aHR0 cDovL2NybDEuaG9uZ2tvbmdwb3N0Lmdvdi5oay9jcmwvZUNlcnRDQTEtMTRDUkwx LmNybDAdBgNVHQ4EFgQURWDW9WXrdcHctVquqtmaJBuk54gwDQYJKoZIhvcNAQEL BQADggEBAC+5YeLRKatN5fHiuLywUNsoPgEcJTsEf1/PTQsl/D5vhHf/sOzGeOUy 0jH/djtfGoM/aPHMojKf+QCJ7wf32OO9b+HAI8r+/mpxl1yXZdYvNUy3LCi8pULX gy8iNBC+aVF5JtQ5GiT6DVvZ23oiLsuH1TedqYx8ttqDxCYkVqDJo8v1dGv/qJAe vUFkv6QwwqfOsBLYdLBeZ9VjGU1s68e46UC96lsSkGR0hFNhvJfbNDzTSzf2+iHQ aFdYjD0MZOG8IRuovMGHa7la5QDn7i5REg6fXKCWdvZ9bYcPnMTdTxHkN5dZsr+j lVdUoNkS52hKNBmJnXmgiI/MijrOodg= -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwuUwuBxxqujIED9mrEDi qmogE7EMDAJpAlKrSuXcwL+a+kUUfInVo0br6+chdrXUNeQDHLzwi3LTIbH2h67p faxJsFMkQx2D42nvl4CBPdRbOvUy736MryiajafrzfsKzMSQzVhc81LNI/m9Ft+F 2zPA3TgywkjLnufFytGJV3/VhlqZCBtrCAn27Xdq7e+RdN08ZYZNT7ZNk3eJhf3Z U8ErtA5/HpBXd5+zv/4w/djvyzaiPC3RrFm/5j8V2LpUrMqRWZb2yVTbh8L0tGz/ +BVIO2a/0/KPl9QHg/IxM0hw4GDMrelxQOetQIGbVUaHPJOGDrl7sqnUfT4LJDD5 DQIDAQAB -----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 240868365873342687138632566969899846497506635998 . . . . . . . . [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 'HK' . . . . . . . . . . . . [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 'Hongkong Post' . . . . . . . . . . . . [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 'Hongkong Post e-Cert CA 1 - 14' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-04-14 07:11:38 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-04-14 07:11:38 +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 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'HK' . . . . . . . . . . . . [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 'Hongkong Post e-Cert (Server)' . . . . . . . . . . . . [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 '0001970323' . . . . . . . . . . . . [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 '000000000000000000000000CUHK-CHAPTER-1109-ILC' . . . . . . . . . . . . [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 'THE CHINESE UNIVERSITY OF HONG KONG' . . . . . . . . . . . . [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 'THE INDEPENDENT LEARNING CENTRE' . . . . . . . . . . . . [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.ilc.cuhk.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 (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 24603249117174228736667769939306744730883151765942377555881653471347571886269370485703989436906194758413246019123335755714399402010316147037076338690575065417765865483067365186730182097471150100535980449546926918707872177093437326782410745605848693639674063542525679048683796922626614797035765498522607070089585413817580765438103896417639920084068157466232989769440020998392000869635596982644154808467500591133748739303918448634154430138132680383964777216317641643624954748050377721453961735148195101077121132965155350102692009068052256702222318228027379662834951606856959599946084075748397097169081082380309243164941 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (55 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.16030.1.1.30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'www.hongkongpost.gov.hk' . . . . . . . . . . . . . . . . [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 (23 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ilc.cuhk.edu.hk' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (70 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 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://www1.hongkongpost.gov.hk/root/ecert_ca_1-14.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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 5b377d2db298962792f71a44fc37a6939e5d50e4 . . . . . . . . . . . . . . . . [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 (65 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://crl1.hongkongpost.gov.hk/crl/eCertCA1-14CRL1.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) 4560d6f565eb75c1dcb55aaeaad99a241ba4e788 . . . . [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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