yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:42:4f:1e:b3:c3:8e:c4:7b:41:7a:3d:b1:a0:ba:70:f2:8a 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): 03:42:4f:1e:b3:c3:8e:c4:7b:41:7a:3d:b1:a0:ba:70:f2:8aSerial Number (int): 283900662438680438074087430604630493557386
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 47:ff:b7:6e:c3:de:4e:37:93:92:11:b2:ab:81:53:73:00:a7:a4:ff
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9a:5c:b9:92:41:77:9a:e0:b8:0d:41:a1:0d:73:df:00:61:b9:f3:9b
Fingerprint (sha256): 63:01:8e:27:1f:05:ba:4a:d7:63:6c:38:0c:d4:28:e0:0e:5e:36:67:d9:0b:69:e4:cb:69:50:c2:d0:3b:c0:fc
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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(limited to 100 certificates)
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yushikai.co.uk
yushikai.co.uk
www.yushikai.co.uk
yushikai.co.uk
yushikai.co.uk
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yushikai.co.uk
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www.yushikai.co.uk
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+gAwIBAgISA0JPHrPDjsR7QXo9saC6cPKKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMjUwMjM4MjVaFw0x OTA1MjYwMjM4MjVaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAo8RhVuqfgr3CAExnY+PvdVtRZokQ+jmQ vQwXAl7UahJhuY4aBH1kRvvXXVhhBnUebaui9ZbiRS/HhqDwDKrvncnn00KVCSNL LDXbNJP5oG08UK0JpSva0SAi9gchhY4dUZZuiiXBGuWDm+AR4dzzDu9O79jk3MPS czb5+m2Kh2nVUkxC43cT28qNe2rphkfcXA+w5Jt0TnDSuNXuo16ZNwfCWJB7cSeF c8p2Aj3pqRoAj5IfhV659BXMXtZyO73HuiF3uYuJfXYJnBGzt7/q9V8VMpTa6a5z ++mNftCrurR1VmQEWTcXcMuSbSWnDBEdYAZHz0kr46Bt0S+ZU5R15eD6ANe9NhqM sI8VC+SxewqRO7d6G705/7ssFikqmNZUgvISDz5uCjvZVLIwRmK9SAWW9vJyZkSp 5KzgufiqOJ05/UdwxwMPr8ksR4NuIDhLlO6nqsOMxyeBe932QJYNdqqlAQ6IDhMY 8Rp6Cc+rVXOWmsOHqOoYKCDLH0aDPDiE0W8ivAq6QASiece2+xQjVwdOpW+xKB+b VkTZMjiVrrWcv1iEOD+uE5nuIOHquhjuklmMXi4JQC34zgSYPcipal2+FO+nkjEn oKTrKs8FQnbDMioMS8EuVVDRErg93aTzgX8bW+J4ury9vWkAVSwv0XuhuD0dx7b9 neClMUlkosECAwEAAaOCAnYwggJyMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUR/+3 bsPeTjeTkhGyq4FTcwCnpP8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHQAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFpIrt5VwAABAMARTBDAh98BkDAuYEsQYcbRpatdgM7XdG6 rmrv3UI6Fy+NxBFTAiAEsZrjEevixbfAwoovwMje4bLgslQU5ABwsQ2UI0FFWgB3 AGPy283oO8wszwtyhCdXazOkjWF3j711pjixx2hUS9iNAAABaSK7e6cAAAQDAEgw RgIhANec6MmeexHZNs19F20YbtXR3BjaqpBZZwWnjvJAjnZ4AiEAusETF9fOPY5w QdPQmJ66U2SUvIweQJZLynnxoKwjhrMwDQYJKoZIhvcNAQELBQADggEBAGJdZ87M seKpy331FRAO2xoNNgY4dRg7/+uf9EqBYLgCc2XMJBZFqUJC/q13YVDYuVt3NVNt KZ2B/NJx+BPrdQePkB85dfbmMaV2KrhCsIaldJ8JRNuoou+Z8u7zNR5OuvTXcn1c 8zUWWQxna9cpzXF9q5x5IkuN7XYrDO15NbBr/83eVrFIyNCwhAOo7gGkAMkNvwBU stfxSY1D9aVrqV+y8IW4iT/4mmg7jCd60lFfS9WOLIVJJTLGcPIfzo1nWPLIDVRa nIyQsGBNh2vw/lSAc8Ie6A1GmHsKDi4IrgJKmaazdooB3fTAJohsyCp/CTDXingC xaznJHBxYSqiFX4= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAo8RhVuqfgr3CAExnY+Pv dVtRZokQ+jmQvQwXAl7UahJhuY4aBH1kRvvXXVhhBnUebaui9ZbiRS/HhqDwDKrv ncnn00KVCSNLLDXbNJP5oG08UK0JpSva0SAi9gchhY4dUZZuiiXBGuWDm+AR4dzz Du9O79jk3MPSczb5+m2Kh2nVUkxC43cT28qNe2rphkfcXA+w5Jt0TnDSuNXuo16Z NwfCWJB7cSeFc8p2Aj3pqRoAj5IfhV659BXMXtZyO73HuiF3uYuJfXYJnBGzt7/q 9V8VMpTa6a5z++mNftCrurR1VmQEWTcXcMuSbSWnDBEdYAZHz0kr46Bt0S+ZU5R1 5eD6ANe9NhqMsI8VC+SxewqRO7d6G705/7ssFikqmNZUgvISDz5uCjvZVLIwRmK9 SAWW9vJyZkSp5KzgufiqOJ05/UdwxwMPr8ksR4NuIDhLlO6nqsOMxyeBe932QJYN dqqlAQ6IDhMY8Rp6Cc+rVXOWmsOHqOoYKCDLH0aDPDiE0W8ivAq6QASiece2+xQj VwdOpW+xKB+bVkTZMjiVrrWcv1iEOD+uE5nuIOHquhjuklmMXi4JQC34zgSYPcip al2+FO+nkjEnoKTrKs8FQnbDMioMS8EuVVDRErg93aTzgX8bW+J4ury9vWkAVSwv 0XuhuD0dx7b9neClMUlkosECAwEAAQ== -----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 283900662438680438074087430604630493557386 . . . . . . . . [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 2019-02-25 02:38:25 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-26 02:38:25 +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 668111520003515937812062722000221478735569577831831202242302415749943272151399296130673407355703805040273158949800504056646165811478296220216236354990271966745986801366076541564749917293747892548936008932026250342426156338488134796217704157005433345646812172836554291047369920983639056499918477165241063940643076152657177716025487445265614482629217234083677551591918411780452367869415582825043373565378545986961671931598408847900262880791975578545504689085107318057570065082942471144766930901464440094456713503270173488795552109695762597583538855319677493130724679220446294880179962807659595666063091737021837016094167504995819888502932521973123214951468542533163361176354149135605600812065923719584682866928139067024570598059601279423725599986490191843598592299583434896642636962094382061916084221782471639759409930205502161951208877941128081946841682643637015150374189208063257474393203171150311759119129215775256078767633584430090948078613287587348297925649156735062287221083755888342581934710155524044641321222674092643740079520972573453134424836518600682473211309801931800079723823701995296512833412260218467117673586743568755087605742097524497609466826386078350304858563718820362193517789455987381161901152331627090680935129793 . . . . . . . . . . . . . . . . . . . . [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) 47ffb76ec3de4e37939211b2ab81537300a7a4ff . . . . . . . . . . . . . . . . [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) 00ef007400747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016922bb79570000040300453043021f7c0640c0b9812c41871b4696ad76033b5dd1baae6aefdd423a172f8dc41153022004b19ae311ebe2c5b7c0c28a2fc0c8dee1b2e0b25414e40070b10d942341455a00770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016922bb7ba70000040300483046022100d79ce8c99e7b11d936cd7d176d186ed5d1dc18daaa90596705a78ef2408e7678022100bac11317d7ce3d8e7041d3d0989eba536494bc8c1e40964bca79f1a0ac2386b3 . . . . [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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