yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c9:4b:d6:6c:d4:0b:c5:f2:76:9b:81:90:c1:87:12:29:3b 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:c9:4b:d6:6c:d4:0b:c5:f2:76:9b:81:90:c1:87:12:29:3bSerial Number (int): 329834419004901217525489839942617334425915
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 8f:b5:a5:ac:08:0d:95:b5:db:84:f2:45:5a:59:37:df:eb:1c:5e:01
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 50:64:67:f5:50:f1:be:66:97:d1:71:0e:81:75:f3:f4:78:80:ab:87
Fingerprint (sha256): 05:a8:0f:dd:94:06:14:6d:00:4f:f6:b1:0b:b3:72:e8:76:c0:c1:7a:0f:ab:7f:89:92:97:40:89:c2:2f:ed:54
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----- MIIGaDCCBVCgAwIBAgISA8lL1mzUC8XydpuBkMGHEik7MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODEyMTkwMjQ3MzJaFw0x OTAzMTkwMjQ3MzJaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA6ESS2TzAyNS+qtWV00gOelsGiD6YqA/5 v66vOOWR5VadEfyZQtHu9mA4hGPHiHx/dDIP3MdCGTq4zr4218Cy2pn/zKG+wRlO 25jFGehAOniEsaCmAfAADbMMPqUBVNvYRLebIO6kfE7F7PGEvxtYzbgVEpq5rSFr YuRmBOEytKHvWxQJRloWYwbSvnQe75efeE1+A3J3TH/fTdyQb6ClH7/BJGfR0Rv+ NYBPliWvp7TPqhOpwm1UJE+7UjXQQV3XK1o7awvfQDXItijbwIUMLnZMaXEV0VWD QJmVOJjNQKcznvJoGVxRFAqcH1yP0RwQsc3vGL8hKal1zzOP0++ZsYv3HmsSRbH8 pNOn2BHLvJVx3p7W3VjQ4lws5upSt+xJ+s77ugJuZi9nVC37/q0PQoauFabA6rYb 95e/xg6kYS1O7dk8Ml5IK5FF90SbLWrgHEqFcKrgi55O6hfLIywW7NFpIAFWDZDL AYmbXjOfFj+lyF1669P+evY8lXTFdJaZ5mst2TVaTeEqGyGhR6HRcENk6OHOHHaU BCybpKGeF+tN6oqARuYv9M4N6jZSQC78UuELTOEe2Z+eBm3Kt+TDW5OmEG2qqfKf K3PILURgq45qi2iGIa8+bVtDQhCnNZEdPSbKfw3Y2eQZmmNS113qO1ZR+tzv19mA PpoBLCbCuGMCAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUj7Wl rAgNlbXbhPJFWlk33+scXgEwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFnxJNltgAABAMARzBFAiEAuvWZCAA4aAaroN3t04LRl3IJ rIW+aVWSmD/NVgLjANYCIDUVXdpOGK1ieGHDDBDw8NlglzSFMgubJs4IvgnCH709 AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFnxJNl/wAABAMA RzBFAiAskko5hBG+WAayMFZLrnV7CFHyNHUWiDMtHjIdAkzFiwIhALuh2VqhVzQe hbqDDy8mRQsYy6FMQhwCHQw2RSx17lqPMA0GCSqGSIb3DQEBCwUAA4IBAQAIMofp mVLeHfxz8I/vT2f9sPWWMDdz/ScpQWhIgEhg91AMzG2rnXJYP/rByeJNzQcYRla8 S4U7ZeKIRF6GXBTtTCWnfNG+K0pF2mCtJzabeVJ8vDh1pa5qPWqj5FkKUf8WlIt/ +iPIgGgSni8qrDawdUwfRaS6bCInkds5o3xUon3DkuE47y/WHxNmSH121LTk/PuS Obh9TiJsrC0lhBYcdr/dNlTMC0lWZOuL01rsWRgMyKcSJ2lH/POfO2hw+2bJ7Yt7 dlfpR5pbKE5M7fDjpcEg2lOF3ANYLy3LNyM7d5hjjUjaIFHU5+7NjSsLkE8Plu7z XBAJaFt9YzzA4k8+ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA6ESS2TzAyNS+qtWV00gO elsGiD6YqA/5v66vOOWR5VadEfyZQtHu9mA4hGPHiHx/dDIP3MdCGTq4zr4218Cy 2pn/zKG+wRlO25jFGehAOniEsaCmAfAADbMMPqUBVNvYRLebIO6kfE7F7PGEvxtY zbgVEpq5rSFrYuRmBOEytKHvWxQJRloWYwbSvnQe75efeE1+A3J3TH/fTdyQb6Cl H7/BJGfR0Rv+NYBPliWvp7TPqhOpwm1UJE+7UjXQQV3XK1o7awvfQDXItijbwIUM LnZMaXEV0VWDQJmVOJjNQKcznvJoGVxRFAqcH1yP0RwQsc3vGL8hKal1zzOP0++Z sYv3HmsSRbH8pNOn2BHLvJVx3p7W3VjQ4lws5upSt+xJ+s77ugJuZi9nVC37/q0P QoauFabA6rYb95e/xg6kYS1O7dk8Ml5IK5FF90SbLWrgHEqFcKrgi55O6hfLIywW 7NFpIAFWDZDLAYmbXjOfFj+lyF1669P+evY8lXTFdJaZ5mst2TVaTeEqGyGhR6HR cENk6OHOHHaUBCybpKGeF+tN6oqARuYv9M4N6jZSQC78UuELTOEe2Z+eBm3Kt+TD W5OmEG2qqfKfK3PILURgq45qi2iGIa8+bVtDQhCnNZEdPSbKfw3Y2eQZmmNS113q O1ZR+tzv19mAPpoBLCbCuGMCAwEAAQ== -----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 329834419004901217525489839942617334425915 . . . . . . . . [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 2018-12-19 02:47:32 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-19 02:47:32 +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 947570220623438648986381686484043071261236244357694232863336551985583678436574893777326842464366565108522530891917351587178176159817975360256859149409415993443687117228279804664428330390128351613563151096800653381221140858545516578127922810736459563975655864270564855719273955971547720637857688910505004642613199297483216588966608391764161415672345588958264523233108107012039583256571698757440393020856581657265901101691138698493160143907452078435808096757149896621870415030072041632363227387360559433630080033383575902792401493075279360057671022898009772162326032870678426418780227913436817737317364442454933534203797561078567320829351812317634479559594679486926397414651487011603050529277930257022798453338489206523350041630602203284766434264635880122779264685835343078666463284388402720202050008241958117928625010381027640874373208138720703703297929069252311858797875268558407060359855718628347602643243438469426875983690216333309085796033076195207603877365127859007665103372368370453536832738039364413809095141877454371823801653707804383569895425025745918081823751620452539037567981678634311553324904865444300319879815194320601709358685172179979691682174537009923316965067832223039045654611619049056425542538728988923719992916067 . . . . . . . . . . . . . . . . . . . . [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) 8fb5a5ac080d95b5db84f2455a5937dfeb1c5e01 . . . . . . . . . . . . . . . . [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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000167c49365b60000040300473045022100baf5990800386806aba0ddedd382d1977209ac85be695592983fcd5602e300d6022035155dda4e18ad627861c30c10f0f0d960973485320b9b26ce08be09c21fbd3d007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000167c49365ff000004030047304502202c924a398411be5806b230564bae757b0851f234751688332d1e321d024cc58b022100bba1d95aa157341e85ba830f2f26450b18cba14c421c021d0c36452c75ee5a8f . . . . [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) 00083287e99952de1dfc73f08fef4f67fdb0f596303773fd2729416848804860f7500ccc6dab9d72583ffac1c9e24dcd07184656bc4b853b65e288445e865c14ed4c25a77cd1be2b4a45da60ad27369b79527cbc3875a5ae6a3d6aa3e4590a51ff16948b7ffa23c88068129e2f2aac36b0754c1f45a4ba6c222791db39a37c54a27dc392e138ef2fd61f1366487d76d4b4e4fcfb9239b87d4e226cac2d2584161c76bfdd3654cc0b495664eb8bd35aec59180cc8a712276947fcf39f3b6870fb66c9ed8b7b7657e9479a5b284e4cedf0e3a5c120da5385dc03582f2dcb37233b7798638d48da2051d4e7eecd8d2b0b904f0f96eef35c1009685b7d633cc0e24f3e