yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:6c:77:b1:19:69:2a:7f:28:d4:34:21:93:38:b2:ee:c3:20 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): 03:6c:77:b1:19:69:2a:7f:28:d4:34:21:93:38:b2:ee:c3:20Serial Number (int): 298246451106176808899372188148895778259744
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 9c:48:8c:d5:03:c4:4a:e5:c0:5a:fd:63:9a:7f:00:7a:d9:1d:49:a1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 17:a3:4e:e5:ae:f1:59:32:4c:58:c9:f0:97:25:3a:32:f0:cd:61:d8
Fingerprint (sha256): 11:70:d0:db:89:59:9e:4f:e2:70:df:f1:25:80:cd:71:70:20:5e:4d:76:96:c9:fb:b3:d7:6e:1d:55:47:bd:a6
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
www.yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
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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----- MIIGaDCCBVCgAwIBAgISA2x3sRlpKn8o1DQhkziy7sMgMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMjAwMjM4MzdaFw0x OTA2MTgwMjM4MzdaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA0xIZjdXDKyahYY+/1jo6VoF/GP7QeWOy 15vHPSc0UelGtYZxSHxSr9zfKCYFWBj3fp7B9s7791grpgQi36+75skmOjk/iOVx qo2QtMgZ5BrDgZodfL2lsM0I6AGLSmZUTA6zZ0X1CFaWbigMIZdWn45mP5ja+lHe vnToHGtISpku1NYABpb0taM8LaDea5Q54D+VI9arXaVN/LBgzIpljOlHchNALgD9 5XHEb9iYL+8PWOJGjyv18UMBAqI5mHnp5/pLSofdShivlsORGwEnmotipXqP9B5W MKqXv8SmCy4RqmSPKjI8ug/gqQpekjuWKFZp9sam4bUFaWl4VcTT1oIOzgVNPIs8 JJqmnDIX9yuPmHCXGRjRclivJHBaWDl9x/Ix7YE6J/lZ4ewl6aXnhRBLiudnlZDA r/nJtf8lChj9pdvR7vbDSNjWqiigSzEMlZBmkhig9VlIjODBaQ8eHQ8igKAfdj3f sgoed6s9a+bIczxTACjLux9fIrZUda2LUA9f8gGE2GdjuI83dPq8CoUxCKhmu/qT d7BjHkMMqo3XJjF0ZooAQKKiMx4BbpSq33ol1BrS0KIFODNFrJcEUTor6vX+QwWU 2cFbPZU3qneZlCwq1wUSZfNMOBLw0o9ZGBw1uhJ+u+CTou4Od+tQwdkHN0lHTQtc vHn92Y2GU5UCAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUnEiM 1QPESuXAWv1jmn8AetkdSaEwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHUA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFpmS3v4wAABAMARjBEAiB0c0a7+1O0uPp6pyucxce30iiX yFN/gwS/RuQYQnCGXgIgZ+N92Qb+dzhmesbcROI2lkdLMZcWNIasIrWKMQe4f+UA dwBj8tvN6DvMLM8LcoQnV2szpI1hd4+9daY4scdoVEvYjQAAAWmZLe3vAAAEAwBI MEYCIQCtThI2udAw42sTed7RCPl2JVq171Mt7GCoJUo2L923jQIhANwN2WZgBQea XOvEtfHQpHkQa/5Ywg3X+xajXsOoYVYyMA0GCSqGSIb3DQEBCwUAA4IBAQBW3Zmj DE8wxQyLiYSvSAosX5/I87J+4LTtaPD/K0PuuGLS+GZ0xRK2XEcGCxovPrrbO1NO rOGSbzgOTGmzcsyqF8ZsGXcwYhSH5WSs6ZvawRx8RQA08WSOS3Vum93e3bnNfPrA UIq2SOsRVo9xyf5+OlLLb1E95u5hMLREPRhBdYEmZuCgqD+QFxb2VPWP0pJmWZgS p4qpjXTrUv5YpUm3aRNuLS2MrZsjxehN1OQDURLFiuFpCu/MEof2UHQXtrdn7pKr 12ohfyN17PiUH3/pJCyeaLmWy4SR5QRQiUX7P/eY8YdcUgtoRk/2uBDxSt0MbI7P QsyCwWdOFqvkVM76 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA0xIZjdXDKyahYY+/1jo6 VoF/GP7QeWOy15vHPSc0UelGtYZxSHxSr9zfKCYFWBj3fp7B9s7791grpgQi36+7 5skmOjk/iOVxqo2QtMgZ5BrDgZodfL2lsM0I6AGLSmZUTA6zZ0X1CFaWbigMIZdW n45mP5ja+lHevnToHGtISpku1NYABpb0taM8LaDea5Q54D+VI9arXaVN/LBgzIpl jOlHchNALgD95XHEb9iYL+8PWOJGjyv18UMBAqI5mHnp5/pLSofdShivlsORGwEn motipXqP9B5WMKqXv8SmCy4RqmSPKjI8ug/gqQpekjuWKFZp9sam4bUFaWl4VcTT 1oIOzgVNPIs8JJqmnDIX9yuPmHCXGRjRclivJHBaWDl9x/Ix7YE6J/lZ4ewl6aXn hRBLiudnlZDAr/nJtf8lChj9pdvR7vbDSNjWqiigSzEMlZBmkhig9VlIjODBaQ8e HQ8igKAfdj3fsgoed6s9a+bIczxTACjLux9fIrZUda2LUA9f8gGE2GdjuI83dPq8 CoUxCKhmu/qTd7BjHkMMqo3XJjF0ZooAQKKiMx4BbpSq33ol1BrS0KIFODNFrJcE UTor6vX+QwWU2cFbPZU3qneZlCwq1wUSZfNMOBLw0o9ZGBw1uhJ+u+CTou4Od+tQ wdkHN0lHTQtcvHn92Y2GU5UCAwEAAQ== -----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 298246451106176808899372188148895778259744 . . . . . . . . [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 2019-03-20 02:38:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-18 02:38:37 +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 861093339075900908194851120322513964729518714990729559267064744322771973979331142524114274481614637069139673799251563397298779492064213468288979677468524944383269537845374437048735341153611593996928389268349567848348056907920969269445266084923008243256358478408350710031036929800055848419064127476291902592997259350886802287681385065369932309039797780401458598187922690627907134753018567562180156805284463051947851772557814486729823930532080858519696898688527533275932667737885285405211468515141313194492347731381407429223609799198522582563346011151906488073610972528840374145201653196933349352323822828306294100639879718526456712361015597038939062464878087344245924932323439134811719234888099586697026603138446065666429248402699662151480858359461454846830827759653471778499171570908782485207092749286204127238855073583275907931646603337918450050914958576955355239932052825785499653088903794454692747127573841421719210630754546938789406217413892661271171531045296333380692701157176017595173276362557304315772825231794529846322533198408575720174023236447238300913347953409538525984445447197918301888256628020035414233152023351357507919658008568237084551781052844058510963340858718443645759251378808921178698901534827234401562686542741 . . . . . . . . . . . . . . . . . . . . [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) 9c488cd503c44ae5c05afd639a7f007ad91d49a1 . . . . . . . . . . . . . . . . [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) 00f0007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000169992defe300000403004630440220747346bbfb53b4b8fa7aa72b9cc5c7b7d22897c8537f8304bf46e4184270865e022067e37dd906fe7738667ac6dc44e23696474b3197163486ac22b58a3107b87fe500770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d00000169992dedef0000040300483046022100ad4e1236b9d030e36b1379ded108f976255ab5ef532dec60a8254a362fddb78d022100dc0dd9666005079a5cebc4b5f1d0a479106bfe58c20dd7fb16a35ec3a8615632 . . . . [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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