yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:26:df:95:a9:8d:84:65:62:11:87:3a:b6:1b:ad:70:f4:b5 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=yushikai.co.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:26:df:95:a9:8d:84:65:62:11:87:3a:b6:1b:ad:70:f4:b5Serial Number (int): 274564782672507727998017159754246282867893
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 7e:1f:ca:23:eb:68:8a:3a:96:aa:81:87:c7:87:3b:67:6f:62:b8:45
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e8:37:45:cf:12:b3:7f:dd:8a:72:0c:85:e1:59:b3:92:ee:96:7d:d7
Fingerprint (sha256): 22:58:c2:5a:58:b4:7b:62:7c:67:f2:f6:f1:61:37:0f:a5:57:c8:c8:73:d4:91:b0:76:8e:86:13:0e:ab:ab:60
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate yushikai.co.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for yushikai.co.uk
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
www.yushikai.co.uk
yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
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yushikai.co.uk
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGZzCCBU+gAwIBAgISAybflamNhGViEYc6thutcPS1MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMTcwMjQwMDRaFw0x OTA2MTUwMjQwMDRaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA7FwbG5Q1QMzToPnq40fEH+u9uLAT3+Pa 20ha6lJclZyXW7O8rs7bCoc25ghCujLv1oEFf+VH+/rXmQxHMODaKtzjvw+gBpTT QtsiDiyKixA9RLbTr7UCdSeSblE+BaPD0aIZzFEBZkoyz/19Jks0wq4E5TG2kkQq q3cpNt3qCO61cTeBUEF8KDEvGYZXrZKuiWI1hw3vBxTDBtMvoYVv4MZeaVMcLdFb b3mmcRUrw96wGHUR9wb8XfSRbxdkRNFa2Bt4CqNKrvGgy0bWPIVhSiHDCFk7BoVk r3qU5iMqTojYEdbF/43n4UuwLKGkMe0dgKbbUOHlbxSe2pxAuPxSTyksIpLxJ8iT plOwLnjr18e/LIGK6IN8N9/g3fVw2a3dLopTElXA7Y2yS+CM/jZNWsDm9Sp9Y6wl 7SWhwiDgT/iV14LzkBzfB2VSYNgIMbKRJSc4qvf/Ipv64XfBakDSUvmdqdaGxFg8 Yx+5wGX9y0gycYTuKxwJpYHG27+UgWdVicOBNDbkxzEm2brjnJjEoQ6zpquzTHLa eseo8ZzIUwpqyUzqsdDvnYaNjB/nZ4UrbSj38xx6YF2u5eID55W73kvOsUaRuPCD IPueRoCVrwGU/Ed4+xLROKhPqu3fx2Vz/lEYh25wYgrDohNmPVbEx3+v2Ss9kMKg 5ZfwgWHIewMCAwEAAaOCAnYwggJyMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUfh/K I+toijqWqoGHx4c7Z29iuEUwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFpibwqogAABAMARzBFAiAYgSvd4k0GND6/lsL+IiTlGUb3 TpGDM//nzkPZfPpMQgIhAJxgkV80NyZ58yqzVFpW0yBlJXjqY2cSbgGVZpxXpQFF AHUAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFpibwsnQAABAMA RjBEAiAmkUlFgtguPkaTi+2K77lZTT9LfusoAzsxnfvy9+g7fAIgLllwODwDGYs2 bIqNelH8z7zeX3Oodd1Exj0GF5iOwGIwDQYJKoZIhvcNAQELBQADggEBADR+k77o Hu7ruE+HFqaVSKKi4Cdh7QVwyIVHXAioHklc+MblyGuHw5kD1YuMQ8BHSwY5GKR6 Nkwzom7HkLCM3kNrMFCVeKuL8tLRFzgwi1yqcaU1fjvwhVApXkIvPqbTGOZZnyuo SeUkd9BXKCtzAxU/SGtMdWpSS0bhWh+2kgvHgzL7rErNrHPsNJBQbYwqMo5sssYZ sV4xvcTm1exUdzfKa23TN5xdZA5PCVLIQndfB9f2ByqNH0WmLySPL3P1Rn20F4rM 9Ix94F/8ehoSMr/jt61eKmCWsVL9XVLUMZTrT0z5yxk9uZ9VdweAfAakvO3iUHLl ymm7sBAEifNbLQY= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA7FwbG5Q1QMzToPnq40fE H+u9uLAT3+Pa20ha6lJclZyXW7O8rs7bCoc25ghCujLv1oEFf+VH+/rXmQxHMODa Ktzjvw+gBpTTQtsiDiyKixA9RLbTr7UCdSeSblE+BaPD0aIZzFEBZkoyz/19Jks0 wq4E5TG2kkQqq3cpNt3qCO61cTeBUEF8KDEvGYZXrZKuiWI1hw3vBxTDBtMvoYVv 4MZeaVMcLdFbb3mmcRUrw96wGHUR9wb8XfSRbxdkRNFa2Bt4CqNKrvGgy0bWPIVh SiHDCFk7BoVkr3qU5iMqTojYEdbF/43n4UuwLKGkMe0dgKbbUOHlbxSe2pxAuPxS TyksIpLxJ8iTplOwLnjr18e/LIGK6IN8N9/g3fVw2a3dLopTElXA7Y2yS+CM/jZN WsDm9Sp9Y6wl7SWhwiDgT/iV14LzkBzfB2VSYNgIMbKRJSc4qvf/Ipv64XfBakDS UvmdqdaGxFg8Yx+5wGX9y0gycYTuKxwJpYHG27+UgWdVicOBNDbkxzEm2brjnJjE oQ6zpquzTHLaeseo8ZzIUwpqyUzqsdDvnYaNjB/nZ4UrbSj38xx6YF2u5eID55W7 3kvOsUaRuPCDIPueRoCVrwGU/Ed4+xLROKhPqu3fx2Vz/lEYh25wYgrDohNmPVbE x3+v2Ss9kMKg5ZfwgWHIewMCAwEAAQ== -----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 274564782672507727998017159754246282867893 . . . . . . . . [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 2019-03-17 02:40:04 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-15 02:40:04 +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 'yushikai.co.uk' . . . . . . . . [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 964263809607511008281997725884802227525033481309146694034308125711898104435128744990268811195579097483850889337643776181585201545750620029473716902358717146890099604854631503426271088231697248401382270852316695409559746723302486510862445557176007921228653344007946369939369464604334524536412600083136923864933386545441759502473469336947526825882770911488495908820281152162918855765235199871037874586609655710482706557949509660913956354336539963962824282450793281255744448212888662733197000578303772370164073045134624143330347876953350361924171774870578605682236815459035231952677239374470953434310406757067885300637155535099514645870957767466843176887787730892377731763598498953768424110974650807205762765181050561367133074813527898592709575188877606770000526862130043060851747770358209714019049507253829313833614724023742726883038903938128659330475025235118409338121479665049839922036119198025653178269412918253473046953342048232875160270064385947973875398563164202562180857121480716863865921503209461349567068743888747237640481480338321555263712887366762006255895943853674441644231993437873954725202429511628415587075311918199830549443749189395813563262040870007091652043063640416454322975918844941061452561326882450965752749521667 . . . . . . . . . . . . . . . . . . . . [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) 7e1fca23eb688a3a96aa8187c7873b676f62b845 . . . . . . . . . . . . . . . . [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 (38 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yushikai.co.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yushikai.co.uk' . . . . . . . . . . . . . . . . [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) 00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016989bc2aa20000040300473045022018812bdde24d06343ebf96c2fe2224e51946f74e918333ffe7ce43d97cfa4c420221009c60915f34372679f32ab3545a56d320652578ea6367126e0195669c57a50145007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016989bc2c9d000004030046304402202691494582d82e3e46938bed8aefb9594d3f4b7eeb28033b319dfbf2f7e83b7c02202e5970383c03198b366c8a8d7a51fccfbcde5f73a875dd44c63d0617988ec062 . . . . [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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