app04.teli.hku.hk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:94:6f:70:65:24:20:e4:fc:51:6d:cf:da:fd:4a:e3:e3:6b was issued on by Let's Encrypt.
With 11 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=app04.teli.hku.hk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:94:6f:70:65:24:20:e4:fc:51:6d:cf:da:fd:4a:e3:e3:6bSerial Number (int): 311846775995745678261309695293443459507051
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 11:52:8f:97:37:c9:ee:c8:fc:2a:18:40:b7:e0:63:40:9b:fa:83:4c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 20:d8:85:79:f5:69:7c:f1:d3:a4:f0:db:f9:a8:21:e5:fd:62:cc:68
Fingerprint (sha256): 02:44:ba:15:f5:28:62:42:03:07:c3:7b:30:1d:38:c7:84:1d:58:84:8a:cd:0b:22:01:57:7d:83:27:e7:58:43
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate app04.teli.hku.hk
11
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for app04.teli.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
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
app04.teli.hku.hk
commoncore.teli.hku.hk
course.teli.hku.hk
emu.med.hku.hk
git.teli.hku.hk
online.hku.hk
optimus.hku.hk
religiouslife.hku.hk
studio.course.teli.hku.hk
survey.teli.hku.hk
video.teli.hku.hk
commoncore.teli.hku.hk
course.teli.hku.hk
emu.med.hku.hk
git.teli.hku.hk
online.hku.hk
optimus.hku.hk
religiouslife.hku.hk
studio.course.teli.hku.hk
survey.teli.hku.hk
video.teli.hku.hk
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Certificate
The complete raw certificate details for app04.teli.hku.hk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGIDCCBQigAwIBAgISA5RvcGUkIOT8UW3P2v1K4+NrMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMTYyMjA4MDZaFw0y MDA0MTUyMjA4MDZaMBwxGjAYBgNVBAMTEWFwcDA0LnRlbGkuaGt1LmhrMIIBIjAN BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqy2T6W3opfpm0cDuUGu0FZKXshi3 b8PW38bNYpQXaxENfddIIzXTqGIkKEaLv/KcnK+ean2WjFc5Pug9eT+ojhJBUgBg CmytwD5swjLKIVyRIhI0NWyabP28d5S4EhQKqm5pJg17YMRqjmRTS+LWnVQ01l42 VszssMfyptqPUXwsSEd/vJGk/sH1vDBGBDuk/SQYA3Qkfss9XIxIngxTc7eHA3PT NxXSI5L0bBWWIbgO+XRmnroshGK3kQ1XXtu1W7MvvJw4aHYiyJ1RHDqzSw/Flknd BiG17obaum6BFGHtkSgGl6GYmUanQtJTicKAFXOV8oB+K7DfaZcW+/s4xQIDAQAB o4IDLDCCAygwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggr BgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQRUo+XN8nuyPwqGEC34GNA m/qDTDAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcB AQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlw dC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlw dC5vcmcvMIHiBgNVHREEgdowgdeCEWFwcDA0LnRlbGkuaGt1LmhrghZjb21tb25j b3JlLnRlbGkuaGt1LmhrghJjb3Vyc2UudGVsaS5oa3UuaGuCDmVtdS5tZWQuaGt1 Lmhrgg9naXQudGVsaS5oa3UuaGuCDW9ubGluZS5oa3UuaGuCDm9wdGltdXMuaGt1 LmhrghRyZWxpZ2lvdXNsaWZlLmhrdS5oa4IZc3R1ZGlvLmNvdXJzZS50ZWxpLmhr dS5oa4ISc3VydmV5LnRlbGkuaGt1LmhrghF2aWRlby50ZWxpLmhrdS5oazBMBgNV HSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpo dHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIEgfQEgfEA 7wB1AG9Tdqwx8DEZ2JkApFEV/3cVHBHZAsEAKQaNsgiaN9kTAAABb7CdJS8AAAQD AEYwRAIgQjkhbZeBrUoqN+t8VQIQs6Zkcwgzt7Jo4Ej7AtFtruoCIEep6RSEvg3i Yvwofw19SxbFvSMPrbNVaNMCg99bTBVMAHYAB7dcG+V9aP/xsMYdIxXHuuZXfFeU t2ruvGE6GmnTohwAAAFvsJ0lTQAABAMARzBFAiBNseqlh9EkXV7rFXRmVDTg8jGv 5uj/1D5XEl42Jcu/5AIhAMK4wu5ipFeCD4ApyTgJehZUD1K8jcpF1BvCzreUULGr MA0GCSqGSIb3DQEBCwUAA4IBAQAFfdRnpimbVbCXfXgRYt9iwKGgdEwn4ajNywCQ JMyUw32uPJZsHYY+8yyBPCTOpQ9CjqIMK7qHVM3aOLiWu508admWhXy+t+WzMAHT X7kMDeoTECL1GRXJrgYBGdxRxbm12t2KSqPPbmPEzV3eVe1wJUNpK2DwBwczC7G2 A2LsSvqxo8UEZ/AIma66eGXh2Unv8Rc+bY+2vIyqua5VRsa4xAGI33MPH0PR/JN3 RAdoZS9FzRdxQHwnS1mCQLClY5AViLM680Ylyz1zlbWfnNszQaQhtrmHlqHVUf02 ou7XU5Nrm6TaJQ4u/tDZzuhKgGvKWsh3VZmKN8sRsAI08A2k -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqy2T6W3opfpm0cDuUGu0 FZKXshi3b8PW38bNYpQXaxENfddIIzXTqGIkKEaLv/KcnK+ean2WjFc5Pug9eT+o jhJBUgBgCmytwD5swjLKIVyRIhI0NWyabP28d5S4EhQKqm5pJg17YMRqjmRTS+LW nVQ01l42VszssMfyptqPUXwsSEd/vJGk/sH1vDBGBDuk/SQYA3Qkfss9XIxIngxT c7eHA3PTNxXSI5L0bBWWIbgO+XRmnroshGK3kQ1XXtu1W7MvvJw4aHYiyJ1RHDqz Sw/FlkndBiG17obaum6BFGHtkSgGl6GYmUanQtJTicKAFXOV8oB+K7DfaZcW+/s4 xQIDAQAB -----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 311846775995745678261309695293443459507051 . . . . . . . . [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 'Let's Encrypt' . . . . . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-16 22:08:06 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-15 22:08:06 +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 'app04.teli.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 21609225390473068424916857168526081819988482468800766444865772505754969938912619519095996082391718157157859708868266351514752806284557595706557376983589377936606714358280705365292155235646555330072438398108715597009318096844359849067863837340080805558047945029625390294539624170635791677776530074591650733090091266526592036852063717777727641969767328233773225286619445008042283699726929587650274906822646842935396787186841174268895318315429669593327750483528189527683897458630118549108713321292429335900274092988992051784519001493664059659057025723007639009237909654339100604913840030820391834937427352051000683477189 . . . . . . . . . . . . . . . . . . . . [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 (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 2.5.29.19 (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 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 11528f9737c9eec8fc2a1840b7e063409bfa834c . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [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 (218 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'app04.teli.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'commoncore.teli.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'course.teli.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'emu.med.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'git.teli.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'online.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'optimus.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'religiouslife.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'studio.course.teli.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'survey.teli.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'video.teli.hku.hk' . . . . . . . . . . . . . . . . [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 (69 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:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016fb09d252f000004030046304402204239216d9781ad4a2a37eb7c550210b3a664730833b7b268e048fb02d16daeea022047a9e91484be0de262fc287f0d7d4b16c5bd230fadb35568d30283df5b4c154c00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fb09d254d000004030047304502204db1eaa587d1245d5eeb1574665434e0f231afe6e8ffd43e57125e3625cbbfe4022100c2b8c2ee62a457820f8029c938097a16540f52bc8dca45d41bc2ceb79450b1ab . . . . [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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