easytraining.psychiatry.hku.hk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:b7:9c:e1:33:5e:01:f6:15:9d:8b:d0:2f:b3:a1:3d:c7:78 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=easytraining.psychiatry.hku.hk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:b7:9c:e1:33:5e:01:f6:15:9d:8b:d0:2f:b3:a1:3d:c7:78Serial Number (int): 323817059817799040011472060394287954511736
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 08:4c:79:42:b2:8d:78:8c:4b:42:65:d5:b5:08:68:76:94:e0:9c:e6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 4d:f5:e1:a9:3d:4b:30:e8:c5:fd:0f:64:1a:89:12:dd:64:61:b3:fe
Fingerprint (sha256): 02:90:03:76:24:3e:a4:1b:43:f7:89:57:97:ea:98:f1:c3:27:6d:e3:f4:9b:63:2a:75:4f:a5:8c:70:1a:99:c0
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate easytraining.psychiatry.hku.hk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for easytraining.psychiatry.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
easytraining.psychiatry.hku.hk
pgsleave.psychiatry.hku.hk
pgsleave.psychiatry.hku.hk
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Certificate
The complete raw certificate details for easytraining.psychiatry.hku.hk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFkDCCBHigAwIBAgISA7ec4TNeAfYVnYvQL7OhPcd4MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMTIwNTEyMDVaFw0y MDAzMTEwNTEyMDVaMCkxJzAlBgNVBAMTHmVhc3l0cmFpbmluZy5wc3ljaGlhdHJ5 LmhrdS5oazCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJX67z1uzgb7 fh+m/9Tu8k317NI3HNtQ8+3l0KdJ4PBP5T29JLoFHOnGA3350aw68MP7R4EIEoUP gFjeeKBHe7BN/UO3qpMpk3xebulisQVRsNTCVmAY/TgL39QKtgY03GTiswsBPUBu HTXvQr61Kl5Wyebk/25cZ+nCX/POh1jRwh5Q0Banai+IuNYZj5PIDPjMkcGrtLdA L880psg9g3DTukX8fuAkjdutZMrfbomD52DBx8OigIDkwUdEQMV5q62fWgjjH6cj H1kwoDsoH/Ame2wu8+UAkun5ysiukEgXjzPfMBrlrvBYpGa6JPES7G3ry1iYFx2x 2NpJcLnC7SsCAwEAAaOCAo8wggKLMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUCEx5 QrKNeIxLQmXVtQhodpTgnOYwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzBFBgNVHREEPjA8gh5lYXN5dHJhaW5pbmcucHN5 Y2hpYXRyeS5oa3UuaGuCGnBnc2xlYXZlLnBzeWNoaWF0cnkuaGt1LmhrMEwGA1Ud IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDw AHYA8JWkWfIA0YJAEC0vk4iOrUv+HUfjmeHQNKawqKqOsnMAAAFu+Lxf2AAABAMA RzBFAiEArOULRZwFLM9uBMNqm4FAKK1xprTuEnNhfdsRoqQpPyMCIFln+gn0OO9g 0t/WdzyNJTO6nCR9B/aoO3Q+wMi0mIp9AHYAB7dcG+V9aP/xsMYdIxXHuuZXfFeU t2ruvGE6GmnTohwAAAFu+LxgEwAABAMARzBFAiEAsdNnszG6OlG++1QcfgSafdr9 qgSgsqZH9+OwsTBvDwACIHcweJyQgLHTvpkSRSL4hl1KXulxL7Ea5AoLdEq2FzG6 MA0GCSqGSIb3DQEBCwUAA4IBAQASmyaIB/jykLvOwjO//xuiAytRuT/MyK0lZVlO 9REdVoKIawgpmdBCjSoDpgorFUYodM2AYD0f3dBdtngh39X4zi5eMGxLMKVtDMrA 11t9ygJJ7nE8qMkPk1GvCdVMkrDFEQzI4pkTdZ2bcFouOaW1a7eawfQbAd9zxs9b iKF9KATYsZlYGSECUZCKjNLq1kGeeOi+nHMQ5atUFnJqcNvSgZFFkIVB6R5GurEz Gr8M0f5U8fLXkX903kgH1tUbpeMWccI3zpslkpDxbFDVu63dKAfxQyFje5K6/lGm bxVpZnsygBFQTrlJoZjX68hGG6wv+ESEotX7O7o0gP1NTX5D -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlfrvPW7OBvt+H6b/1O7y TfXs0jcc21Dz7eXQp0ng8E/lPb0kugUc6cYDffnRrDrww/tHgQgShQ+AWN54oEd7 sE39Q7eqkymTfF5u6WKxBVGw1MJWYBj9OAvf1Aq2BjTcZOKzCwE9QG4dNe9CvrUq XlbJ5uT/blxn6cJf886HWNHCHlDQFqdqL4i41hmPk8gM+MyRwau0t0AvzzSmyD2D cNO6Rfx+4CSN261kyt9uiYPnYMHHw6KAgOTBR0RAxXmrrZ9aCOMfpyMfWTCgOygf 8CZ7bC7z5QCS6fnKyK6QSBePM98wGuWu8FikZrok8RLsbevLWJgXHbHY2klwucLt KwIDAQAB -----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 323817059817799040011472060394287954511736 . . . . . . . . [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 2019-12-12 05:12:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-11 05:12:05 +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 'easytraining.psychiatry.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 18933247869117124028254889804986863718295273343236901436075395597349299365752288058756934092344196495087670088980609967477003887667446223335355751193455643081667492224587229704454487153815931369990478539844427107475055844761884669355913506312549520943885647139615832315358346019261331905900650551310045382877854284276076863130838851060398792486677297959681809388368477708824926238958703881721299790475790992251191949772296833508038507957326142795948086377824135360283781313944996633319314752289789519073640384520300948637894942105542619918549074752774248217913727499799206182167520763395971020808614599373695414889771 . . . . . . . . . . . . . . . . . . . . [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) 084c7942b28d788c4b4265d5b508687694e09ce6 . . . . . . . . . . . . . . . . [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 (62 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'easytraining.psychiatry.hku.hk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pgsleave.psychiatry.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) 00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ef8bc5fd80000040300473045022100ace50b459c052ccf6e04c36a9b814028ad71a6b4ee1273617ddb11a2a4293f2302205967fa09f438ef60d2dfd6773c8d2533ba9c247d07f6a83b743ec0c8b4988a7d00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016ef8bc60130000040300473045022100b1d367b331ba3a51befb541c7e049a7ddafdaa04a0b2a647f7e3b0b1306f0f0002207730789c9080b1d3be99124522f8865d4a5ee9712fb11ae40a0b744ab61731ba . . . . [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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