yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:92:eb:cf:07:7e:44:65:d3:3c:12:4c:39:a8:76:e0:0e:99 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): 03:92:eb:cf:07:7e:44:65:d3:3c:12:4c:39:a8:76:e0:0e:99Serial Number (int): 311331526902177711327037974733283739569817
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 7c:a1:13:6b:ca:53:60:28:1b:ba:32:fc:46:a3:08:f2:39:47:77:da
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 6b:07:a1:8a:8d:4e:18:d8:3d:b0:ba:79:0b:a3:2a:fc:d3:84:13:4a
Fingerprint (sha256): 25:bd:eb:2e:e3:e7:08:c0:12:22:fd:86:36:5d:09:87:af:19:8a:54:09:5b:05:48:f9:a4:5c:02:fe:f4:dd:52
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----- MIIGaDCCBVCgAwIBAgISA5Lrzwd+RGXTPBJMOah24A6ZMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMjcwMjU1NDVaFw0x OTA0MjcwMjU1NDVaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzymFJO9ypSuDvMEqLOL+9xeBRUIg0/9t GGfnXYDulsHqoV+eF2GNQH9mY0mAaYfO2iUWnDV7KnXJHAFdsK0+wZnLuGVc3cX9 rS0LmrhdjPb+BoKoqOqdgz4elnZRZJ3Qd569GO36QDzZHYvOvJ1MZRIeTheaNxUK xfvwlAoLSSm/Ykc/5TZ6/gE4DaBEzVo/qcm8u9DV8B/mhwBY0jJFQmGFsK5hGd4U CscG2+dAb2LboxTHBN6kKX8IkKc+U5M/z0UcjXk/NV2Heiw+PhNfCRDsO4yhptue EGK0vNnhsEEVg6fsLayIGeiNdCZVOdFOTo1agnA9C1/l9ZBnvjs02X4KKjFPFVWN 4tUTt6HgKnJ7MyzAGvflxodVkgIa28xo36cimTw3JLevqolzTLnXfhnNhqrNK0SV efG8FegbGpkG5p77l0yvGEoxv7m6T7V32VNbSvnxxkMMOamEM5ZIn8ZT2mwcIKUL 35HcvRCjfPGAc3bIvRxZs14V3b2RclCfWvU05ktp4b27yFwh8FkYCXuw7gzg/E49 PN2hJdLYLdjr7DgHqlR0Fha2prDDOLx6ynsK0iR+zf3RHdPrJbwmSLvpkNUvyEk/ jxu6y//QVWhn3Dq346o0pLYcZhzl/nom3Hn3MHugoa74TfcvY53gRk1ooOUgVKig SUEEyYI3L08CAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUfKET a8pTYCgbujL8RqMI8jlHd9owHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFojXLuEQAABAMARzBFAiEA/z31NAWjgVoXKxyjog+Iadq8 MIaegpMhOOZxtLBtlCkCIGBktXyDRTd5ytQXZ6l2FvbVykn/fOlakDHmjXBg9KNl AHYAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL2I0AAAFojXLsKQAABAMA RzBFAiEAgxGGEHXuXHzowRLi602VnAIGTYyH7N1Bw6dOyrhXRJMCIHAUfCd3iBYO 3YnmMikz5r1e1vjXG1rEXJb4CUF68AE1MA0GCSqGSIb3DQEBCwUAA4IBAQB/QF8Y kg22bpAWHkISUK0M7Ha6usAmHgKGgrEcO42OWOKIuddIFbM0L+4MeZLBAtQQX6j/ YgxioyBDn8cHaGO5jRRjDK467hhhPx/ysyVDZvBVkXQgDr+gDjp2VDHhAritiNWC 0jQJI8DqEoIHRd3t0YStv89eL+PHHsPDRn7/gy6Moxxw4cvLKvbEW09Cik6dujnv ncWkjpgJB8WmI2w3Ndnkkdgn8HC3HjjRTnyqsLs9/UuMKYk7cP6QdxydYxeTUsNw +/YIjl80CC1XzB7u/twtr2jf2HDHh6HJENzsHptyYNV+brcw/PFRJJU3o7/U3iPf GdaN5LLrnUA0ExV+ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzymFJO9ypSuDvMEqLOL+ 9xeBRUIg0/9tGGfnXYDulsHqoV+eF2GNQH9mY0mAaYfO2iUWnDV7KnXJHAFdsK0+ wZnLuGVc3cX9rS0LmrhdjPb+BoKoqOqdgz4elnZRZJ3Qd569GO36QDzZHYvOvJ1M ZRIeTheaNxUKxfvwlAoLSSm/Ykc/5TZ6/gE4DaBEzVo/qcm8u9DV8B/mhwBY0jJF QmGFsK5hGd4UCscG2+dAb2LboxTHBN6kKX8IkKc+U5M/z0UcjXk/NV2Heiw+PhNf CRDsO4yhptueEGK0vNnhsEEVg6fsLayIGeiNdCZVOdFOTo1agnA9C1/l9ZBnvjs0 2X4KKjFPFVWN4tUTt6HgKnJ7MyzAGvflxodVkgIa28xo36cimTw3JLevqolzTLnX fhnNhqrNK0SVefG8FegbGpkG5p77l0yvGEoxv7m6T7V32VNbSvnxxkMMOamEM5ZI n8ZT2mwcIKUL35HcvRCjfPGAc3bIvRxZs14V3b2RclCfWvU05ktp4b27yFwh8FkY CXuw7gzg/E49PN2hJdLYLdjr7DgHqlR0Fha2prDDOLx6ynsK0iR+zf3RHdPrJbwm SLvpkNUvyEk/jxu6y//QVWhn3Dq346o0pLYcZhzl/nom3Hn3MHugoa74TfcvY53g Rk1ooOUgVKigSUEEyYI3L08CAwEAAQ== -----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 311331526902177711327037974733283739569817 . . . . . . . . [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 2019-01-27 02:55:45 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-27 02:55:45 +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 845147990863806774485715321425460762442473972310837968852632612038668203451619483134144731149862502812598411331297944881786055558142068643159012215809253272591270574782998870458962177808727867297912867740854396438376688756673871205058817964690701181329944338848279604244955495562612112161026033705152611346322673136881062035889061265889825661521482302671677718415322090652103127350101798068173692033195940877365085798653893506866546705774064199751003450463593115504163186849743036884275374569011496469031180201332119981494001192446928118164213890747543815032419796140336453779760155862701380089835170337548611008087534391714662945082361667967715710913160832092738946113169515456789510636220649057146626069866328035956437422083587822066389737336304378965611505990084059698853255361126360903723085323238647004084357551725569848565548895732192307508231507040218068477693044266002222131430619192051046980778188431004194067813435474695067885399502409101623267264098820938472666154165407243083727937647393894153304912607126522680079162379441056662926156419448460530167906469797419528877273802604994989283722399439568442833166807714763151498064384142433729106237196557468478080611675028009050403948812075638819883425200842744113957904527183 . . . . . . . . . . . . . . . . . . . . [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) 7ca1136bca5360281bba32fc46a308f2394777da . . . . . . . . . . . . . . . . [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) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001688d72ee110000040300473045022100ff3df53405a3815a172b1ca3a20f8869dabc30869e82932138e671b4b06d942902206064b57c83453779cad41767a97616f6d5ca49ff7ce95a9031e68d7060f4a36500760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001688d72ec2900000403004730450221008311861075ee5c7ce8c112e2eb4d959c02064d8c87ecdd41c3a74ecab8574493022070147c277788160edd89e6322933e6bd5ed6f8d71b5ac45c96f809417af00135 . . . . [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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