yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c4:90:fd:11:cb:15:3b:a0:d5:c1:84:91:66:d6:6a:c6:c0 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:c4:90:fd:11:cb:15:3b:a0:d5:c1:84:91:66:d6:6a:c6:c0Serial Number (int): 328224924555173767499606689421693924591296
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 94:8d:3e:4e:2a:fb:83:f2:56:22:c7:44:36:c8:52:2d:f7:20:a8:31
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 4f:e9:a4:eb:5a:e9:db:6c:27:e0:10:fe:fd:89:5e:8e:79:f9:7c:b1
Fingerprint (sha256): 44:fd:38:f2:39:72:cf:3f:b5:eb:00:a4:61:07:e8:f9:72:55:3d:35:2f:09:f1:89:aa:7c:ce:eb:f9:56:35:bd
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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(limited to 100 certificates)
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yushikai.co.uk
yushikai.co.uk
www.yushikai.co.uk
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----- MIIGaDCCBVCgAwIBAgISA8SQ/RHLFTug1cGEkWbWasbAMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MjIwMTM2NTdaFw0x OTExMjAwMTM2NTdaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvSKscp3PdNpdozF+SKBL5ueZZ81tQagA yaZ4u9gG4VeEp8x9NwaLzLe54tXpvMT/vmkvLJptLPY9vWVP0Kd8mjgx7wwY3Ztd eFh7ouItcq6pKDC57cYxhjuucJFMxH5SSyz0VUMoKIcMBjcVj1rUHqIlAnfqtDW4 UmCh/0DbwCmLRa2LX8OSlXY3mbePVhzNzzuKM1s/81sGYffviSPAjYHwS/WsBkGU obaM/9qGnhHgWGBOBchNGlq8dIOVu22LDgZdTTrDSi1URMo38jGoEzipEaBwf3ps DGamw03LP/z2lBvBZwalHObio3pbF6jdrXkxP2jZ2psWTFcBUtw+reIj8Gf/f2iW HTRpIDqV1FTpayXC78EoR8bF42ZTdjadPQeRHnwNrkv4Au3+quB0xOdvdayWaXXS HECrzI/wWB5LDl40naTSobuvAwNUpBm5O/uTdEJMn9AVeG8yEth7INimFwgIVGmG MTLdajSK1UQI/v8NYtfv2DQAoU9aA+alLVugUlr4PLcMVVKDy0/DFuDuZfjoMRil ETZ+4Zlx9PEEV+HqUpg6x1UmVZgMnhLQiHgCmMRq3UcctSplDekdgpmnjnjHlZTr yisdTCDyZG05FgoD5fOQM1+Uhf8+txDnVDV0UcB7u3/XOF7iE+kD/6KljalPo+mp 6OUvv6SvQWECAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUlI0+ Tir7g/JWIsdENshSLfcgqDEwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHcAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFsty8soQAABAMASDBGAiEA/cSYygIi8o9E/qaE0LM7+Kt/ vzIqU4/yv1TnbyrRZrICIQCkNF8Wqaj7GGUyfHJjv3hNxNrBBagfOTl6zgYWL2vj xQB1AGPy283oO8wszwtyhCdXazOkjWF3j711pjixx2hUS9iNAAABbLcvLJIAAAQD AEYwRAIgTB3qLtYtVDMMZamMU50HGLVlPVvFBMEXLAlwPXwWFvsCIEYf/GHlIFV6 9k+xTazJ7T8X6EWcyreewz3+5+WIVHjLMA0GCSqGSIb3DQEBCwUAA4IBAQB1Hc3B cgfJuLdu0l2iipRLIeZrMLNhpXp75vcMNDFCbMqHJ/Juv7kbkVzqdUXDVuKYzvr+ mHrFvO2nLTKgOqhrAt8tf2Nffunps+vy8XVDe/rSlretO/sSGB8vaVuRqZyebQV4 03RWLRMO+nm7Qzb1Vw9k8ZOjw6twdcFz57oZJhk+ONGvknZum4e/Vzk1HEUnuYYQ m7xIM5GSoG/FHbVcMg4z9NagZ6gT+5Lem0omd3g2Rftb0jjYpJs33M+h+gIoevoY ylYh5JewqN6i5Arlk4C1f/Ap9dMlcgClMvjAoIVqe/ZEpBAGuVVSh0YXclN2m5qY qS+uaw0NTPROl2uB -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvSKscp3PdNpdozF+SKBL 5ueZZ81tQagAyaZ4u9gG4VeEp8x9NwaLzLe54tXpvMT/vmkvLJptLPY9vWVP0Kd8 mjgx7wwY3ZtdeFh7ouItcq6pKDC57cYxhjuucJFMxH5SSyz0VUMoKIcMBjcVj1rU HqIlAnfqtDW4UmCh/0DbwCmLRa2LX8OSlXY3mbePVhzNzzuKM1s/81sGYffviSPA jYHwS/WsBkGUobaM/9qGnhHgWGBOBchNGlq8dIOVu22LDgZdTTrDSi1URMo38jGo EzipEaBwf3psDGamw03LP/z2lBvBZwalHObio3pbF6jdrXkxP2jZ2psWTFcBUtw+ reIj8Gf/f2iWHTRpIDqV1FTpayXC78EoR8bF42ZTdjadPQeRHnwNrkv4Au3+quB0 xOdvdayWaXXSHECrzI/wWB5LDl40naTSobuvAwNUpBm5O/uTdEJMn9AVeG8yEth7 INimFwgIVGmGMTLdajSK1UQI/v8NYtfv2DQAoU9aA+alLVugUlr4PLcMVVKDy0/D FuDuZfjoMRilETZ+4Zlx9PEEV+HqUpg6x1UmVZgMnhLQiHgCmMRq3UcctSplDekd gpmnjnjHlZTryisdTCDyZG05FgoD5fOQM1+Uhf8+txDnVDV0UcB7u3/XOF7iE+kD /6KljalPo+mp6OUvv6SvQWECAwEAAQ== -----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 328224924555173767499606689421693924591296 . . . . . . . . [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 2019-08-22 01:36:57 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-20 01:36:57 +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 771605291528045350854324272891836921932053037683664816440412830905220422662667836326643141386804436262817278168539232303638525342199857075914578021937972958059130764203203792461399849121163247563388083444876557382688161638112100791059030602282724659175435421989323301217651458617296206780112540800107289140250030873020000322678110643982937149065048454541849190709914728371763255747702067053130953799976592376946784742708386075790696588689677898081092331756549894736710801155379201754050237885793230864829050927538132955846451697774822789599359469243204047043142134683114850717425380068077413693932606703112080754031404012868374035743393493075165404571828047047534642912342715867255129534778111671656343886743492219145540204822566395442198828828583931264639791996759637949428555628937539590845724708546851459511936349354291383408125121452723577941885682380024854455034243636759626079400602939043697183897591922346417247548287283683167708620579365481889398335098791376130914351353066773749749420961065085190856862501734799314084687357720497559697111987300500102185740187176011878360929579867867537339259992770363170107659961584198467782410163656623926965120679706123264740768883470442761189122342123824889836633029388534269444940054881 . . . . . . . . . . . . . . . . . . . . [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) 948d3e4e2afb83f25622c74436c8522df720a831 . . . . . . . . . . . . . . . . [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) 00f0007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016cb72f2ca10000040300483046022100fdc498ca0222f28f44fea684d0b33bf8ab7fbf322a538ff2bf54e76f2ad166b2022100a4345f16a9a8fb1865327c7263bf784dc4dac105a81f39397ace06162f6be3c500750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016cb72f2c92000004030046304402204c1dea2ed62d54330c65a98c539d0718b5653d5bc504c1172c09703d7c1616fb0220461ffc61e520557af64fb14dacc9ed3f17e8459ccab79ec33dfee7e5885478cb . . . . [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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