yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:10:ea:d8:31:d4:83:8c:3a:71:ac:ed:59:d4:1e:73:25:8b 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): 03:10:ea:d8:31:d4:83:8c:3a:71:ac:ed:59:d4:1e:73:25:8bSerial Number (int): 267093537563826022286164377062433210181003
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 26:10:62:13:42:c2:b8:4a:41:88:03:52:a2:fe:1e:77:e9:9e:7c:49
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): d1:08:d7:14:b6:9d:6a:f6:60:c1:4c:90:34:cd:30:ed:9a:a6:71:a5
Fingerprint (sha256): 01:47:42:9d:b3:5f:8e:99:3c:a1:3b:a4:4f:ff:45:be:06:d0:4e:d5:e4:96:01:a9:a8:27:80:49:30:5c:e0:8e
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
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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----- MIIGaDCCBVCgAwIBAgISAxDq2DHUg4w6caztWdQecyWLMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMTIwMjM3MThaFw0x OTA2MTAwMjM3MThaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAuyJqH3DaAWRfAOKu4WTC6Bxw9xZajZpD U3TNkZwOfP6O5B2edfNl65ltrE+9mTgXOo9UREe3NJ18hunzWEqmCtNhM2kJEEo5 ZF6AyROVKy3j+M7oNVNEIPivHQ77Tz5or8lZwuMBXXpXJHxO2K4SGYJRvuyDpLEu WYw2h0kix8uByWJ+tFsvu3ZSnClu8TVSNWdW4++0NXWBwoILxGG0LzXx22pXPeUq 4NNYxbhXU3zT4WSOK3qvk44NH1OHJpucAY/EXeFUJpsEajZm2tZYzgxUnvk6rPa1 r+FBZSfybGqGUR8f2XYjpMfZYdj36FHQ2blTp+7mej5sejhAa5mrKMB6PmEw4jmx h4HQsLI8VYQRQfS5CGGuPUYyWKzP0uyYNKdFXEHZXpYP+1PRR5ebY6HKvDQg7a63 N6nD/WTCBrTk2pORIRRpdXt7MT0CEK+TK8ju/TOhyvBNpExT6kaAQq0UmIXxnwaP FJE1UH9UtGKBtx5basBzxB9stqOyhh4sCWryK2j5Tg3D4Hwm9zXW2P9kpBuLKo/d fjncVgr4VCaRShyzDKzE86w/dOw0KqHcqiKDPSzdkerEWSnXWAtgLqpvM2EEyQK8 uEW6eswMsBnpB6+QnIoPGAMB0j9r8DM79Eo66DH34CK4WZnTpEkY7wlJeIpPdlSQ it6ibjPA5EMCAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUJhBi E0LCuEpBiANSov4ed+mefEkwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFpb/nYuwAABAMARzBFAiAL0nDJLHZTxfCfLxGeZcLWmreI 23W5B1qcpN4W1yP58gIhAMDELh9NPo0cpYE/Tdm+w6W6z64wEbKjjERdoTV+2ZRl AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFpb/nYxAAABAMA RzBFAiAm0FSLDWjWIf9xdcsZpBgX3b2nNAvZEWzxRHaZv8J5hAIhAJlxJgnpuAih VCjywEvilVBcJrCpmUoOwNFQ2E9kvgA0MA0GCSqGSIb3DQEBCwUAA4IBAQAuOp4Y y/Nij6y5gxMxB5A7PWdallIJOxoNqFfb5eo6QGJSc4XC1MA5NsHmaO2r6H60X5rj z+leUaVqsPw/8sdky11Fp0jFSPGsjN/+r1U+GqsjcOe6DZRTZh5rAMVtIMBRsvRq dcGY6+XP7dVL19hCISgcNH49Tie1Mf/5DDI19zSMcf5mB5QHV14xrT/DI8DtRE9Y KcNL0gn7BsBWpzPi0lcTj7sY6kA1zcXjUUo+/xXLXHyClY4TdME7E4ibd95GSsQ8 kOY3IRgdrZ4boerlTl+5vUsbOE304NjI+/jJTu3s7Eq6ZSwdN8wcxTThSobriNIL kTj+gQOCG/JlCC1r -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAuyJqH3DaAWRfAOKu4WTC 6Bxw9xZajZpDU3TNkZwOfP6O5B2edfNl65ltrE+9mTgXOo9UREe3NJ18hunzWEqm CtNhM2kJEEo5ZF6AyROVKy3j+M7oNVNEIPivHQ77Tz5or8lZwuMBXXpXJHxO2K4S GYJRvuyDpLEuWYw2h0kix8uByWJ+tFsvu3ZSnClu8TVSNWdW4++0NXWBwoILxGG0 LzXx22pXPeUq4NNYxbhXU3zT4WSOK3qvk44NH1OHJpucAY/EXeFUJpsEajZm2tZY zgxUnvk6rPa1r+FBZSfybGqGUR8f2XYjpMfZYdj36FHQ2blTp+7mej5sejhAa5mr KMB6PmEw4jmxh4HQsLI8VYQRQfS5CGGuPUYyWKzP0uyYNKdFXEHZXpYP+1PRR5eb Y6HKvDQg7a63N6nD/WTCBrTk2pORIRRpdXt7MT0CEK+TK8ju/TOhyvBNpExT6kaA Qq0UmIXxnwaPFJE1UH9UtGKBtx5basBzxB9stqOyhh4sCWryK2j5Tg3D4Hwm9zXW 2P9kpBuLKo/dfjncVgr4VCaRShyzDKzE86w/dOw0KqHcqiKDPSzdkerEWSnXWAtg LqpvM2EEyQK8uEW6eswMsBnpB6+QnIoPGAMB0j9r8DM79Eo66DH34CK4WZnTpEkY 7wlJeIpPdlSQit6ibjPA5EMCAwEAAQ== -----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 267093537563826022286164377062433210181003 . . . . . . . . [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 2019-03-12 02:37:18 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-10 02:37:18 +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 763441874638277471943285645297691589800710003841874506881601220554668215248075087936288650869883536237379931462934953420374132377031561427868061719611472899984872005382236901364053621510719953570895456369516699986685905365992666140746937448675888681190967232250733193407133921689127451558330723620258418964789221299980139703855607693864926154825278749022847981548197553039308662340452927818734170849745794463106004936097071642337233652112564808543740378996912908844074813620713880624044236929417248635400958841358564750178797282122952307520862679002191789446497109009987709167969590526678776185874276179982939004848067211126317216527516157764599355821402660376708848017488229111578561634641916536672594322664658614460104272860095516129921738956542351286654765281676487653624596615975439035017977984045601652025626061321695400925422850911179002428548209586752544828933497431370719182374207662314006142081447442157354178591849469913433991728803847989117355454951834190741095937136814402219086029470100314048129138900734164802463040788687933872298885434336027176122798624391193610285324526909646332536190767283464478166071811889527438722432717831367005813091401407884081581644369242845117816978298732179933038606089415409157279083193411 . . . . . . . . . . . . . . . . . . . . [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) 2610621342c2b84a41880352a2fe1e77e99e7c49 . . . . . . . . . . . . . . . . [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) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001696ff9d8bb000004030047304502200bd270c92c7653c5f09f2f119e65c2d69ab788db75b9075a9ca4de16d723f9f2022100c0c42e1f4d3e8d1ca5813f4dd9bec3a5bacfae3011b2a38c445da1357ed99465007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001696ff9d8c40000040300473045022026d0548b0d68d621ff7175cb19a41817ddbda7340bd9116cf1447699bfc2798402210099712609e9b808a15428f2c04be295505c26b0a9994a0ec0d150d84f64be0034 . . . . [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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