yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:7d:bf:62:3e:fc:31:71:44:d8:50:b1:db:da:3e:27:7a:ee 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): 03:7d:bf:62:3e:fc:31:71:44:d8:50:b1:db:da:3e:27:7a:eeSerial Number (int): 304126546330175297296834021518871175330542
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: c6:54:63:61:e7:4a:40:b2:64:78:a1:06:34:fb:8d:ff:00:41:b5:89
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e3:23:7f:d8:c8:82:ef:7b:ee:fd:64:30:09:4c:16:76:29:b3:6a:63
Fingerprint (sha256): 12:fe:e7:0e:97:33:ac:0d:37:31:48:4c:b4:c6:24:17:00:15:a9:94:18:a1:87:ec:f5:bd:1e:c8:97:d6:77:79
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
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaDCCBVCgAwIBAgISA32/Yj78MXFE2FCx29o+J3ruMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMTgwMjM3MTdaFw0x OTA1MTkwMjM3MTdaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA3wy5e/Lf8Xob+tWFXN/2cHmKfEzflNCM YB+2u2/7UheMk4EWcy04r5EIccV7Iyt+052C/Kkn385k2zkbouLu62xeTKvDJhEq kWjyIgkWNBYGaTzh5L71OJ48/LNafkEfILUuGigIpbFZzB+GQowbNzB7uOEfEUzP lt4l8qJvpdhIyaxZqRFvCOYp9UX+w1rWllwCTJm2WgAfkZ/oSwXF2tFxGv/b77lz CFlGP4YyihcZSNTrG4Tb5MJsYzN82Bx1EWXJudqw5+9vxU/NcvSoOE+dBfnvx08f dhTp059C3WLlqa/coMHT6kmGbSeHnQxl8HtqGmamN13bO1AHMNvfq0JpNhFpw+QP tD8bPED81jKUOa62z1xIwJ2vm2Hp/F6WhOaWsRgw2EfJRDK6g+IwEUWIyMAcv6BJ mB4xDLDDVc0L6QLWXVYE282Rt8kSopFU638rtF9EpWv/ushRvUdPdFEc5odvd7Kd PYqyVu/n1RlrhFdaFssrSmjF3A3ae3OQYvS33hVnRAwOY009CJdBVBagIj3ZpPzG eIhme0BdzCWh0ftHYtUYu9NDVMEQVf2AHeZfX9xm/iwBLmRsN5xRyUL+Geba/vcs Djnk3icuqr8JDyg+kLsXFRSNI8I3m1opKHvf+x5Pv1jPAZ4xfp4dkomA/n2a0lCw ojQ4iIHKuBkCAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUxlRj YedKQLJkeKEGNPuN/wBBtYkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFo/q3rzAAABAMARzBFAiAKivc5eDIYERdqN+UNxj3my3jZ KEXdAMAtI4iaXn+wtwIhAJRIDQ/8fDRcQXo6Yjq/Ab9WgLc78EXlinDY0/t2Fo6B AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFo/q3sHgAABAMA RzBFAiEA0v365YGtYusB3aM19nXJu3bn+TYfH9Q3dEGJJpqhsAoCIAj9CSaY3bMa c6uZceIrnS+YFzi3aR7xsxvfGVfU6uRYMA0GCSqGSIb3DQEBCwUAA4IBAQAfkN0E tCyWfhp3OeHENTqIy0GN+v2pJ6BpivTGEk9WzLPFK6gZ+JstWGAo3GhItZq7/J3K cZkWEVuSFB+4GAwp9yvhP+Afz+nQrnZ+/uOnoqixanDKkMM8WSZH7eFiamqapUAK TDfh/iiTLhIaIn5xlyxO6LmigI3QKI6a7PtT4uQ4X1KlvhKQFlWFgzrjj71kUISu eGDoe/pFQm7s5hYQSGu37AvT0ZYsXjYRYvbbCM8XhOkcA0dhsFO0IB++x46DN8iK Ynd1CAItgfY0htEqwLIEergtpiugixzEzY3ihNV/Ir9rL8SBnFDbFA9Oc1m6/V+s ycxDv3shT7vooWOR -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA3wy5e/Lf8Xob+tWFXN/2 cHmKfEzflNCMYB+2u2/7UheMk4EWcy04r5EIccV7Iyt+052C/Kkn385k2zkbouLu 62xeTKvDJhEqkWjyIgkWNBYGaTzh5L71OJ48/LNafkEfILUuGigIpbFZzB+GQowb NzB7uOEfEUzPlt4l8qJvpdhIyaxZqRFvCOYp9UX+w1rWllwCTJm2WgAfkZ/oSwXF 2tFxGv/b77lzCFlGP4YyihcZSNTrG4Tb5MJsYzN82Bx1EWXJudqw5+9vxU/NcvSo OE+dBfnvx08fdhTp059C3WLlqa/coMHT6kmGbSeHnQxl8HtqGmamN13bO1AHMNvf q0JpNhFpw+QPtD8bPED81jKUOa62z1xIwJ2vm2Hp/F6WhOaWsRgw2EfJRDK6g+Iw EUWIyMAcv6BJmB4xDLDDVc0L6QLWXVYE282Rt8kSopFU638rtF9EpWv/ushRvUdP dFEc5odvd7KdPYqyVu/n1RlrhFdaFssrSmjF3A3ae3OQYvS33hVnRAwOY009CJdB VBagIj3ZpPzGeIhme0BdzCWh0ftHYtUYu9NDVMEQVf2AHeZfX9xm/iwBLmRsN5xR yUL+Geba/vcsDjnk3icuqr8JDyg+kLsXFRSNI8I3m1opKHvf+x5Pv1jPAZ4xfp4d komA/n2a0lCwojQ4iIHKuBkCAwEAAQ== -----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 304126546330175297296834021518871175330542 . . . . . . . . [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 2019-02-18 02:37:17 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-19 02:37:17 +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 909963406953493295848016028955594738850115876936375431941696070297736350831257717138983332825326059798452623753468002381022575854548020486095284733932211787292883185232841634848326059326057880782021478395879795657158957130916552974037403160047952859827714432493136057834631963412496663688098866648716415728266348658613864847054019941684516939192604671100743874659361700384398639243973824029660530818273907647382972911914762108032510453520146091228841203922550505730088776016121995196761270972784227228693396062666441789164955465906607337422294726208364307579531509274403235429482275853858905380670332795727235105891075810628168562912385258634720108425260596375297498439449918096338848933369358190667875132501691040279650025776891215019835168528066623546813736542608532185079070735814171749432334021071574813869566252511834231932261600584738900063459575066043596672691815485077899559007115113204955789673021882676565935212795021635510981724403668501316380397781121010809749593178334197961818264377969268929453342381136997045667590485623524664156672622839880828465814880533768991504111917010461536336097269033435613219137903378249718546952114704820528214541923132918758193826818803358046456827609250974855015893538571361279696735746073 . . . . . . . . . . . . . . . . . . . . [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) c6546361e74a40b26478a10634fb8dff0041b589 . . . . . . . . . . . . . . . . [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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000168feadebcc000004030047304502200a8af73978321811176a37e50dc63de6cb78d92845dd00c02d23889a5e7fb0b702210094480d0ffc7c345c417a3a623abf01bf5680b73bf045e58a70d8d3fb76168e81007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000168feadec1e0000040300473045022100d2fdfae581ad62eb01dda335f675c9bb76e7f9361f1fd437744189269aa1b00a022008fd092698ddb31a73ab9971e22b9d2f981738b7691ef1b31bdf1957d4eae458 . . . . [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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