yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:49:11:ba:fa:a5:7c:0b:b4:0c:2c:a9:3b:af:91:bf:99:ab 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): 03:49:11:ba:fa:a5:7c:0b:b4:0c:2c:a9:3b:af:91:bf:99:abSerial Number (int): 286201038307366716837899946496104071141803
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: a7:8a:06:00:dd:d9:7b:61:8e:df:48:ad:da:ad:04:ce:0e:8b:46:94
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9f:75:b7:b8:18:38:aa:71:78:df:53:1c:41:c1:5f:85:7f:5f:ec:de
Fingerprint (sha256): 4b:57:c0:5d:03:40:fe:fa:e9:ee:f4:33:45:3a:66:b7:7a:f4:0d:22:30:5a:a4:bc:4b:16:42:53:dd:a1:53:04
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
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGajCCBVKgAwIBAgISA0kRuvqlfAu0DCypO6+Rv5mrMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODExMjcwMjQ1MzNaFw0x OTAyMjUwMjQ1MzNaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA1UGI4NV5Y+aG2I/Nbxr2XInY8w0TdAx5 +nXoVfeb4Ixtu9c2GZnykEU8EAoyQlQ63V7toHy89vcy4zaYRg6kQyCCjbM5SvXy hfNnHjYc/tIrKERS4TD8i/WW7QYgQLy+8XDL4IMS/Ez5oqpz3a8SYCIGlEECRVSF erqf/LQE8eW2uk2J6xLbhydR1bpKOW/mShKuy3TdTu2YRCmCvD8lVdLJ+HwVoYpE dDXKl/acU1DuQuPdZRnxGQsRKWLTIFjsjbcFfyvtr3F1qkfbFBR/hOmKBcHmkBQd kubmoENuDoKSoX+wSym8p1LjN3seMcgJxmnoUc9aW2bsEvZ6lyhC81HNWGBI1/+T uIag1eTXJImmH6t6tOkj/pG84dKqXj8QBghSDD3QA9ufwiWvUOC9C5CfLdq+o0m/ YITqcJAWMNaOHynXZ220Xu7pnEvFCo5VjNvrFQTk+OOzT8P8dJaoxOCQOgqUH82Z f4JsJTvGbpeo1O42O6Iw+ej5EbASL6HSRls7lrnIEVHzJ5yb1U5LJAJQ2e+rzCQq y0xrUlb+tQxM4dJSUXicSP6f9aecNDEOSdtfMmiqAcvIiAo5C9rXgrgn6YVzxffj ah2FmRieprf9/rdfgq9ir8nV4CuNMOc/axQZNz+nusIo+LNxDqq+Ta4GGkvQYvE/ +aTRJAyBSGMCAwEAAaOCAnkwggJ1MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUp4oG AN3Ze2GO30it2q0Ezg6LRpQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFnU0WsLQAABAMASDBGAiEA14LLIPo342LBDXVXWzd6JMd/ dZ/3wQI3qrA9s0UdFC0CIQDFyE9IYkT5f3+3WAEJSIGJOYvqcvTcKCVGFpJlsppR +AB3ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABZ1NFqmEAAAQD AEgwRgIhAJX6VAQsh09JEG5XRw7SesLFH4f1FxNDzk46QCxuqYuFAiEA3sos9Lo8 XY7+LKU4aCw2mYAj0dbp6zUdsT/jans4yEIwDQYJKoZIhvcNAQELBQADggEBAEYW sN8KHyY4jzxtLhZVVLFlD9hMkkB1Bq+Gc0QFzP/oC7obZOPvSQ/VLKA1sbJEcXFf N2tzQSDxVJkZviGV8VbFX7uckhTRhIy0x2xXzE9rPRExdhLkqjr3ClTNnL3XXfTe AjQzdmuaWFnUqteIoqCP3Wa/OE0chSBwexQnpmCeVTQ86+wxdzt1cytYZ5+9li45 oNct6l5td3bRF94wbOe/t9nI8k2JjlP47Fn/RwP8xL/Ka9DgdNRPUvYkhBOq0+YP XJE/VQHEdxBJPODGTNlteY7D/pP5AcZEmyypWM9OX/UP4Puilo/IyXDoVmuNlgXx b2f72on1NMoVdzyu3Fg= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA1UGI4NV5Y+aG2I/Nbxr2 XInY8w0TdAx5+nXoVfeb4Ixtu9c2GZnykEU8EAoyQlQ63V7toHy89vcy4zaYRg6k QyCCjbM5SvXyhfNnHjYc/tIrKERS4TD8i/WW7QYgQLy+8XDL4IMS/Ez5oqpz3a8S YCIGlEECRVSFerqf/LQE8eW2uk2J6xLbhydR1bpKOW/mShKuy3TdTu2YRCmCvD8l VdLJ+HwVoYpEdDXKl/acU1DuQuPdZRnxGQsRKWLTIFjsjbcFfyvtr3F1qkfbFBR/ hOmKBcHmkBQdkubmoENuDoKSoX+wSym8p1LjN3seMcgJxmnoUc9aW2bsEvZ6lyhC 81HNWGBI1/+TuIag1eTXJImmH6t6tOkj/pG84dKqXj8QBghSDD3QA9ufwiWvUOC9 C5CfLdq+o0m/YITqcJAWMNaOHynXZ220Xu7pnEvFCo5VjNvrFQTk+OOzT8P8dJao xOCQOgqUH82Zf4JsJTvGbpeo1O42O6Iw+ej5EbASL6HSRls7lrnIEVHzJ5yb1U5L JAJQ2e+rzCQqy0xrUlb+tQxM4dJSUXicSP6f9aecNDEOSdtfMmiqAcvIiAo5C9rX grgn6YVzxffjah2FmRieprf9/rdfgq9ir8nV4CuNMOc/axQZNz+nusIo+LNxDqq+ Ta4GGkvQYvE/+aTRJAyBSGMCAwEAAQ== -----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 286201038307366716837899946496104071141803 . . . . . . . . [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 2018-11-27 02:45:33 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-25 02:45:33 +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 870008554345076053211784505519172595964437253912772656075883486663204510086173000929006947791370908210050829110173304573073475371402273888112823290350383416397957258005028949022061086937258747129163565585311676834779068016763458616936495677101656524206411882428032134653275992476908835520830437702303599516607468056915291298628970933774211401896557068754014194263012961997885852391186959255816007171574151510405043113183969236049114033753585916777101042593425095847499964746100507485277214122379813629959253166700701668967275547957466700667451827735351382821862771211145809641257917404849773410613721622065176287335430939518429837286882618209066355256699420829535654712386771431643837415507124294038395251165962118996222949773032650869898519309184043581282668498400121688057789076984103145841525574603967483333322824535161844846689371968491867131641988027821923983023101405852355465920596388924719723190906292564014326542484564487442173350614453009846522924811305912842962726306522912623217746521300320125874752783740198242867577178357563806447187408699444748903630892111808919498775776361663517275968654168537293244015012294220598434240403935087877494700638544090379589325560590125030651822980713817588450819610712411364885782415459 . . . . . . . . . . . . . . . . . . . . [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) a78a0600ddd97b618edf48addaad04ce0e8b4694 . . . . . . . . . . . . . . . . [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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001675345ac2d0000040300483046022100d782cb20fa37e362c10d75575b377a24c77f759ff7c10237aab03db3451d142d022100c5c84f486244f97f7fb7580109488189398bea72f4dc282546169265b29a51f8007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001675345aa61000004030048304602210095fa54042c874f49106e57470ed27ac2c51f87f5171343ce4e3a402c6ea98b85022100deca2cf4ba3c5d8efe2ca538682c36998023d1d6e9eb351db13fe36a7b38c842 . . . . [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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