yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:98:33:2f:f3:c9:d4:c7:10:cd:00:bf:71:18:98:c2:04:00 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): 03:98:33:2f:f3:c9:d4:c7:10:cd:00:bf:71:18:98:c2:04:00Serial Number (int): 313127817177617014063104047418984131331072
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 90:50:8c:7e:c0:30:78:57:48:07:1a:1e:9a:35:6b:09:dd:cb:15:eb
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 74:3f:b3:71:bc:df:ed:43:a3:17:79:8c:cb:87:79:6d:6b:10:5e:02
Fingerprint (sha256): 40:07:fe:c2:53:9c:59:bf:f2:1a:9e:98:e5:ce:88:bc:b3:1b:84:7c:75:7c:18:ff:d1:65:22:8c:b6:23:3b:6c
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
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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----- MIIGaDCCBVCgAwIBAgISA5gzL/PJ1McQzQC/cRiYwgQAMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMTQwMjUyMjVaFw0x OTA0MTQwMjUyMjVaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEArdd0FsLLPLXrk2RwSyctrMslZS0UEo+w B6wcFIiOPv1dMoW5rq9MJAP85jODHxTh+ksF38fZ5McHrbEhNaXD+jGBajK0VRZ9 r4hMi718DRYMEOgfDY4gr9Y1PooeMcqDj8XcfT0F0ghVtyyC4TF6+oST570XAacg NZAg4Nfr8EIULwDcrSHy+3Sos5TsfApr/6BxvwH79/eNxcPuQiWbs1Tk0v4ptJSb Yjl1HmpMGk9JZYGIRrNfNMk3fA5ERuyKQo9+44xuel5ClxZ+eiqq9gXIWs1fLNzD 9ShiWjAhlAnBhbxa0deU9XB5lOi9BKwGvu3ZtbjAUG8HIFxQ8bqhfLFJIEOmi61/ Sej9P+QZhlkE7beTVVfesJHnkuqlyyapoxPq3nn20+5D35P5vnMhjwGLP1RJu4/p a1pfhHov6/0cjmxKLzB+lJvUW981/REPuC+vuMFi4XYnBALNFySJPgxhr3xV3TPC rMWWvXG28xDsmepISnWxmyWw0cusKCB36BIbeuQ2xgAHYxjIxajsJ98Adms011cU S7Bd6Y+jDFrKwsnfucM6VuC3HR8iX86aFhoJRjZPiAZh8H0gxAxlU0FYSlZLHQCU Wlkjh9TEybajiiBy9gupAL8UNuLhFPCoUe2IcAN+fG5NyT5d9m9Zdrkbn6xRMNUT eP1662tzto8CAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUkFCM fsAweFdIBxoemjVrCd3LFeswHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFoSn00eQAABAMARzBFAiEAtvClOg4HzsnT7G1AH/zIEgNU zmetmv2q0UI2Hv8K3hECIASY8ovAXAKwOVM4SIoMVVRz48r99DO5Sw5tt0yYEHrG AHYAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL2I0AAAFoSn00wwAABAMA RzBFAiAgCtKQ0G1dl9xPltnR2JvA/kuoWxAeDZ4uFpEDTewHdgIhAPyP9fbBK3fH ev1Iw6bqUjArr0A2ynI+EX4SBDgLncYZMA0GCSqGSIb3DQEBCwUAA4IBAQAr2LNt cl7z86YEYT9hOzeEQOzuEzC0vT9u/xSvGEwzo1md2vLHPMDxKEU98Xsk6EpfOg15 fZrpSkx4iVujyocxpA7vVk5+FnhGc4AH4rDX3GW9d8bxgOA8ta6tEzaJUXmMqVaz Ro32qxjklVp67fnlbUemL2mgKdSiw1OVzvh9Y4U6c5LCJ51ivKH2qfpfLcrIB7lw BUwrLlY5gROzJWwJG10gzszliIuQuPF4pBr71z5sLqeGMCeef3O7xXdZpWRvJIaN +TKZozH0nRHFnjdK1ytnACjYKgjBT+MaRna2ryvIAjyuIUX9w4bdU/Zgss2Z6uk5 k3PNwSG9svOfsNYa -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEArdd0FsLLPLXrk2RwSyct rMslZS0UEo+wB6wcFIiOPv1dMoW5rq9MJAP85jODHxTh+ksF38fZ5McHrbEhNaXD +jGBajK0VRZ9r4hMi718DRYMEOgfDY4gr9Y1PooeMcqDj8XcfT0F0ghVtyyC4TF6 +oST570XAacgNZAg4Nfr8EIULwDcrSHy+3Sos5TsfApr/6BxvwH79/eNxcPuQiWb s1Tk0v4ptJSbYjl1HmpMGk9JZYGIRrNfNMk3fA5ERuyKQo9+44xuel5ClxZ+eiqq 9gXIWs1fLNzD9ShiWjAhlAnBhbxa0deU9XB5lOi9BKwGvu3ZtbjAUG8HIFxQ8bqh fLFJIEOmi61/Sej9P+QZhlkE7beTVVfesJHnkuqlyyapoxPq3nn20+5D35P5vnMh jwGLP1RJu4/pa1pfhHov6/0cjmxKLzB+lJvUW981/REPuC+vuMFi4XYnBALNFySJ Pgxhr3xV3TPCrMWWvXG28xDsmepISnWxmyWw0cusKCB36BIbeuQ2xgAHYxjIxajs J98Adms011cUS7Bd6Y+jDFrKwsnfucM6VuC3HR8iX86aFhoJRjZPiAZh8H0gxAxl U0FYSlZLHQCUWlkjh9TEybajiiBy9gupAL8UNuLhFPCoUe2IcAN+fG5NyT5d9m9Z drkbn6xRMNUTeP1662tzto8CAwEAAQ== -----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 313127817177617014063104047418984131331072 . . . . . . . . [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 2019-01-14 02:52:25 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-14 02:52:25 +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 709211913924588498441773462945676857822294743482866992963864634166218703424470892353467100046112868388130801493586880197097589113491943942800010428028784619964746122544434878589491844121303600290160382634880823281795300753807774730566738116709060492032953980312266532765479237841375471611546728789635749077040586878195935686196889734277753077628442858819608258877447715205605635740826061966756891138195178003615739548568820655830138977263645737572879821870754134879216380275372512406103293271115402625165284501975510766817900893261374396922147179925730834112155758984420553211750995130738911140500234065030224453782842947287508455432917531630564138155863914961283578707555539240934628384291512936928601192248958494924693462614175719889300327414428628413004391977171906961528771759857299976645632068967182851810138848011318777486371153316648959182456292346383709331545787816055963009729989731852667088559532135637129878612819095500169710515900527279903295460613729001749255851357880784054045621535064603538660548461699091576079470739719361594244941321501965400173874821862884187872170306190453767810624647209560096562849491553397310572993578278963337532126728361118144011275524234751960112420244964813117298062588011792423749233653391 . . . . . . . . . . . . . . . . . . . . [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) 90508c7ec030785748071a1e9a356b09ddcb15eb . . . . . . . . . . . . . . . . [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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001684a7d34790000040300473045022100b6f0a53a0e07cec9d3ec6d401ffcc8120354ce67ad9afdaad142361eff0ade1102200498f28bc05c02b0395338488a0c555473e3cafdf433b94b0e6db74c98107ac600760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001684a7d34c300000403004730450220200ad290d06d5d97dc4f96d9d1d89bc0fe4ba85b101e0d9e2e1691034dec0776022100fc8ff5f6c12b77c77afd48c3a6ea52302baf4036ca723e117e1204380b9dc619 . . . . [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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