finearts.hku.hk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:de:09:91:c1:19:59:12:dd:ed:98:34:ed:e0:0c:d1:f5:75 was issued on by Let's Encrypt.
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=finearts.hku.hk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:de:09:91:c1:19:59:12:dd:ed:98:34:ed:e0:0c:d1:f5:75Serial Number (int): 336892263103248955163796824291260390045045
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 38:dd:b4:bd:a6:c6:5f:c0:e3:52:64:8c:63:8f:b2:2e:e3:75:24:ba
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 3a:4e:a5:f2:53:dc:64:6e:58:24:6a:5a:00:34:4e:fb:a2:ad:36:ce
Fingerprint (sha256): 02:da:bb:6d:21:d5:50:7f:01:47:d4:ab:83:28:55:19:cb:17:e2:08:2f:60:b4:e8:05:74:1d:9b:ae:30:86:01
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate finearts.hku.hk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for finearts.hku.hk
Public Key Algorithm
RSA
Key Size
4096
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
conference.finearts.hku.hk
finearts.hku.hk
finearts.hku.hk
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Certificate
The complete raw certificate details for finearts.hku.hk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGcjCCBVqgAwIBAgISA94JkcEZWRLd7Zg07eAM0fV1MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODEyMTExNjAyMjRaFw0x OTAzMTExNjAyMjRaMBoxGDAWBgNVBAMTD2ZpbmVhcnRzLmhrdS5oazCCAiIwDQYJ KoZIhvcNAQEBBQADggIPADCCAgoCggIBAMRQBX1/pUEDg/tf2F9VdP0dBC8nU6sN jdxjj/4TM/mswOk6qMqeYsKAou+fOA8+14dDvQOG+fxvlw02Qoqr/oDBo3Ds2lqF gySZu08mggtkkGy2pgVogyCLubdg2nX3UwhSzhFCRjrnpLHdDn9LxGfb0NjbcYof uAbnsDiU9SZFKGIaRDT2ivu60t0xViuVD8vsX75SVL+VhaD+2FTKQPS1j7E283XF 3ZBHJDpQ+eYmGpgc2rfYjF2U3xa50Y0bCXkCxFuOxhI++iSmFEl8xLI69gyO5x+V vuBIfac4OaNt1CC0IeoIJGCaCPvGvWQRoMG/WnAmmOXO11p11oKkwu0cnvP9IHvv 2MGyRBDRFV5aCc+M7qzarLw6fb8uN9SMFCj9DrqoXqWD3bx3GBYdcKiMfS13h+kW ohnNDqxdTHEQJSbgTVvz07cSRR4MpPHwt0qnC7y6jIgSm1xpX+bSG6THKi5bXtc5 S88LqoL1DVljL1PMFPw8Dd7TQDA/tNiyTmM6t3QigTzGJP4LgbraJRk+2zEIEIYo msTxepwBCXc3azn/PrBrgsCcGMEjlXaWRfY2OEq4vPclQriwOGuXUG+I7uQR4rrX 4ua14goQRl4Y+Ngkh4DoJ/vduTUmqJAdvAtM/xQU24AX5DLLb+39mQnJxTw9RCmz U8j3TZSQmAyzAgMBAAGjggKAMIICfDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYw FAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFDjd tL2mxl/A41JkjGOPsi7jdSS6MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/z qOyhMG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZy8wNgYDVR0RBC8wLYIaY29uZmVyZW5jZS5maW5l YXJ0cy5oa3UuaGuCD2ZpbmVhcnRzLmhrdS5oazBMBgNVHSAERTBDMAgGBmeBDAEC ATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNl bmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB2AOJpS64m6OlACeiG G7Y7g9Q+5/50iPukjyiTAZ3d8dv+AAABZ544PYgAAAQDAEcwRQIgBhgp2OwX07qB K/aTzyK51pZT+2wRN2mJ9ys2w4DGMRcCIQDxCcvd5rUYCnlAnYW16OrVuU3a1eE+ Q7fjri7ZBgwREQB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAAB Z544O5QAAAQDAEcwRQIhAMPcev8pN2veCDV7668DQyrOED56URqFznjnsSPpWNi7 AiAvo+LjoFSnEyDNaEbnKc35DLd4GRBfj/Fba7dnjHrgvTANBgkqhkiG9w0BAQsF AAOCAQEAYjNrJ2+kipX/ab88ITb9gAUTIxo99SIePsMIpBgkOvQ8NdO7GBsJDGVb alqpXCJbeD+OvbshbrRAOO+uwK+yxMOgLyUP1Dq8aIB18p9by3KSYx0bT3uMERDs Bxc3uDJDJq9OvEcupTv9tqBsxgoi/gLdEo7dgDR7Vd6EWuT6JCqHwQ0LEGFTKeol iIa0flIVd4hDJE2PM3DZwyPsxeM3JN7JlPh127FHpq+iPTFpDb9UfWfXjdvEIXoK vrk7vjW5JIVF0F/EIdb4JasI3oiU0YZ5/uvutWYGp8H1iXjClC1pkog8dgdi6gnC rvbWWP+Uxe0tQs+iSeN95KkELHBjWQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxFAFfX+lQQOD+1/YX1V0 /R0ELydTqw2N3GOP/hMz+azA6Tqoyp5iwoCi7584Dz7Xh0O9A4b5/G+XDTZCiqv+ gMGjcOzaWoWDJJm7TyaCC2SQbLamBWiDIIu5t2DadfdTCFLOEUJGOueksd0Of0vE Z9vQ2Ntxih+4BuewOJT1JkUoYhpENPaK+7rS3TFWK5UPy+xfvlJUv5WFoP7YVMpA 9LWPsTbzdcXdkEckOlD55iYamBzat9iMXZTfFrnRjRsJeQLEW47GEj76JKYUSXzE sjr2DI7nH5W+4Eh9pzg5o23UILQh6ggkYJoI+8a9ZBGgwb9acCaY5c7XWnXWgqTC 7Rye8/0ge+/YwbJEENEVXloJz4zurNqsvDp9vy431IwUKP0OuqhepYPdvHcYFh1w qIx9LXeH6RaiGc0OrF1McRAlJuBNW/PTtxJFHgyk8fC3SqcLvLqMiBKbXGlf5tIb pMcqLlte1zlLzwuqgvUNWWMvU8wU/DwN3tNAMD+02LJOYzq3dCKBPMYk/guButol GT7bMQgQhiiaxPF6nAEJdzdrOf8+sGuCwJwYwSOVdpZF9jY4Sri89yVCuLA4a5dQ b4ju5BHiutfi5rXiChBGXhj42CSHgOgn+925NSaokB28C0z/FBTbgBfkMstv7f2Z CcnFPD1EKbNTyPdNlJCYDLMCAwEAAQ== -----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 336892263103248955163796824291260390045045 . . . . . . . . [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 2018-12-11 16:02:24 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-11 16:02:24 +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 'finearts.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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 800885467872305695459826203219917770114247429565575884519685419672883576742620758114131851009805883429252774035684352476368776409913725095548327109579306895653864059154827155829000801949474404062363286751770040711606331124014305820039855845820619910787767919936272411262657006237525906376275705514164212136634955432340471901519271749064500173621557434176510730115743801137574924100402515831514618333612242558569312030277184302333216776551271892002077491480833501176278951857086167550425357573111305266587833946667755011242557838473607932803532814773667809944497295855917367405950797079513255763087913052929619080436298434665170436422782089520912054782343560828852663332817210763983067500917570093312397655381919710580109788428873915407929143166491543188178951398570091375712541064118646385206096401871884731363278760135001452349309258818550490431997147692182835153993008690095209379958514601236668309582591421717214948413197604084630534978358129783130665124196354671748294367793376886616435272492950591056943544790706946610890012708899316166845927458462061819722659230576302427898856433377360845958079735453400443789177973659114447248659806996879878937132423459377234144483311806985756698938371234989725721438501047142142767430896819 . . . . . . . . . . . . . . . . . . . . [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) 38ddb4bda6c65fc0e352648c638fb22ee37524ba . . . . . . . . . . . . . . . . [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 (47 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'conference.finearts.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'finearts.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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001679e383d8800000403004730450220061829d8ec17d3ba812bf693cf22b9d69653fb6c11376989f72b36c380c63117022100f109cbdde6b5180a79409d85b5e8ead5b94ddad5e13e43b7e3ae2ed9060c1111007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001679e383b940000040300473045022100c3dc7aff29376bde08357bebaf03432ace103e7a511a85ce78e7b123e958d8bb02202fa3e2e3a054a71320cd6846e729cdf90cb77819105f8ff15b6bb7678c7ae0bd . . . . [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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