yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:9a:90:42:b1:d0:6e:f7:59:04:c8:49:b2:cc:7a:0c:9a:0c 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): 03:9a:90:42:b1:d0:6e:f7:59:04:c8:49:b2:cc:7a:0c:9a:0cSerial Number (int): 313932097430591254523002295525380325153292
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 92:df:69:72:e4:95:56:9c:9d:ba:8c:d1:81:3d:88:f4:0c:4b:b6:d0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b5:a7:96:76:a1:ee:40:71:ca:96:76:13:84:ca:52:e2:99:11:45:8a
Fingerprint (sha256): 51:a1:a0:56:be:37:ea:7f:98:8f:40:7a:4f:33:ce:b7:44:59:da:36:02:29:80:61:3a:c3:ae:d2:56:76:ad:6a
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----- MIIGaDCCBVCgAwIBAgISA5qQQrHQbvdZBMhJssx6DJoMMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMjYwMjM4MDRaFw0x OTA1MjcwMjM4MDRaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsO50u+T1Op1MIy4cIr8E+CHq9jZC9aJa mzSXZqENeqsLDFn/Ledq+fFdMyDJ6jLEGO6rgpb025bcmuMX+MIVWBd/9wGUM7si 8D9ZJZELD1E+aD8NsLuU+ZjpTIRTuwcNU5/KB3856nhXrwebIvsZT7iLifJbu11y ApPksG6OLK41yZQnpiCOgz2xpD8/pHUSwbrtcB1MtrnPRoGsCDVKnXH/FIugUAFi Y6bTaBgbfZwFCOk9ic0GFRKsjb/BVpKAC93kYVEOasvS0y8EH61mYYxFksLKwZl7 MUPvZcawq/uZlcJ5Cne02MGHAVl1uPNUb/2vPxuM/n0tfqAinNHenbjuAXsIhu/7 5SyTJ8gennb48XjTYGan31sUbpFZqZ4rlGTHze3aQzsk0PCFM70khlDUfsKUAvYl b6io2txASumCgiSECZ7uWfOnUNmPjhiiW4CtRBEFEnkvmkqJKPNQ0yKEfNias0yD 7S4Ud311E2uu9tdS3QoVqY+2ih3ejh5NPes8gjtmVZr9N87XilR64BpOVHx4liSP Ok7PrbUwUlYjxxo/uQmt0qnC7Vcba+qmKZW71gm+VQD3xkowaTh9nF5wwTxq0vMY IesFhaLRdPVaJ+j0+gwJ78VX9FEaj/dI0ekkXydF9oeideD2kdjnAyaA3pgFJBjZ 7fgu6i/vKA8CAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUkt9p cuSVVpyduozRgT2I9AxLttAwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYAY/Lbzeg7zCzPC3KEJ1drM6SNYXeP vXWmOLHHaFRL2I0AAAFpJ+GDQgAABAMARzBFAiEAqWUMpMuOWKaMvhHBICdriPez BtG/IfETYRbHvLLcnWACIGxBkZohjkZNSUO/J3rUoPjplZVJ3THSkdLEiLc80SGl AHYAdH7agzGtMxCRIZzOJU9CcMK//V5CIAjGNzV55hB7zFYAAAFpJ+GEHQAABAMA RzBFAiEAveq2YV82N0f8tH9zMcjKAyCtBkNJkgwC4uBblwbtXzcCIFBDBo/ejg00 5JkbphXKU8Ew09NUb3bkjXb6SvV2FBjHMA0GCSqGSIb3DQEBCwUAA4IBAQAbpdln huCUT+V8M5i4TJJlGouR6vcfH+i6gBFOvi98NrMAd4NO+cwDcLk3cNDuPU0AyG9/ JNdZpWpJ4P+MgAfXDsUmtPfJRNUsgPS52YVk0WY/ntKSH6UCQeufDSVpGeRcbaTI QY6eOG8xoEXNR2r7iHt+UhJXbpU73BltGbCRV9yNWK+aZJTIfUa0Ay/JhfQgCP8y 6Wiuge0A5VDXLXtayqsekf1Ykm5bh2aB7N2UkgHrVSOpYPS4SHI7A3qS5lrjiXpt QCHhRC7sBxtOGTEmgSWFhCrzbsHD7U1QNcqOf4dyOP8wz3OaKtXp2fSw/FoFfgoq bphmwxdho/B716mD -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsO50u+T1Op1MIy4cIr8E +CHq9jZC9aJamzSXZqENeqsLDFn/Ledq+fFdMyDJ6jLEGO6rgpb025bcmuMX+MIV WBd/9wGUM7si8D9ZJZELD1E+aD8NsLuU+ZjpTIRTuwcNU5/KB3856nhXrwebIvsZ T7iLifJbu11yApPksG6OLK41yZQnpiCOgz2xpD8/pHUSwbrtcB1MtrnPRoGsCDVK nXH/FIugUAFiY6bTaBgbfZwFCOk9ic0GFRKsjb/BVpKAC93kYVEOasvS0y8EH61m YYxFksLKwZl7MUPvZcawq/uZlcJ5Cne02MGHAVl1uPNUb/2vPxuM/n0tfqAinNHe nbjuAXsIhu/75SyTJ8gennb48XjTYGan31sUbpFZqZ4rlGTHze3aQzsk0PCFM70k hlDUfsKUAvYlb6io2txASumCgiSECZ7uWfOnUNmPjhiiW4CtRBEFEnkvmkqJKPNQ 0yKEfNias0yD7S4Ud311E2uu9tdS3QoVqY+2ih3ejh5NPes8gjtmVZr9N87XilR6 4BpOVHx4liSPOk7PrbUwUlYjxxo/uQmt0qnC7Vcba+qmKZW71gm+VQD3xkowaTh9 nF5wwTxq0vMYIesFhaLRdPVaJ+j0+gwJ78VX9FEaj/dI0ekkXydF9oeideD2kdjn AyaA3pgFJBjZ7fgu6i/vKA8CAwEAAQ== -----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 313932097430591254523002295525380325153292 . . . . . . . . [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 2019-02-26 02:38:04 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-27 02:38:04 +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 721817416805182673862058616536592959634786440301124662414528678311896375113478788140675841237494279125336004498626032468076455178596516147266904968472403641554399716850319740694718693029555056123478295952755637243505008512539716185708123984898510994496914899353787660921459596395548220237965621099445264098335983270671948846708312618260305096949483943085999641962260113435222687519395630796993980771812201092532382157718770488658494728550172371371166521611223256224895095341345348066960048465082965794559460891554373612648061696958537236488200156461198002253922859814643845606984181668185472618423505778226634417648228852490616575347918510870100046081183945059934123749026124985540811838920943860461405713164736439492295095736193332259622805202692534615811371763295767412449335935831899320180557522941179924317843734525093758536498126898832504680719555225899940995523086066427356764886802590643014350798350925132932782635353084952440679717380847327786357714659669735075920582058734852973025022737425510717155775059494730752760217766532345770414871059436780202164067032160653449002024333526500124515562767961066331107403304159136423466403708432623080720143919523895974658397248405506346772319674714237946256451104742107337363525937167 . . . . . . . . . . . . . . . . . . . . [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) 92df6972e495569c9dba8cd1813d88f40c4bb6d0 . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f000760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016927e183420000040300473045022100a9650ca4cb8e58a68cbe11c120276b88f7b306d1bf21f1136116c7bcb2dc9d6002206c41919a218e464d4943bf277ad4a0f8e9959549dd31d291d2c488b73cd121a5007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016927e1841d0000040300473045022100bdeab6615f363747fcb47f7331c8ca0320ad064349920c02e2e05b9706ed5f3702205043068fde8e0d34e4991ba615ca53c130d3d3546f76e48d76fa4af5761418c7 . . . . [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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