yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:7b:07:85:f5:2e:4a:2c:6e:b6:cc:4e:c5:32:33:b5:c5:8f 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): 03:7b:07:85:f5:2e:4a:2c:6e:b6:cc:4e:c5:32:33:b5:c5:8fSerial Number (int): 303201589070866654465662294860415571969423
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 5f:0a:4f:16:6d:85:e7:ba:d5:1d:77:22:27:5d:a7:09:39:69:a0:9e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): cf:69:9a:fa:27:dd:c3:c0:b7:67:c9:68:6f:07:5d:05:d9:df:28:26
Fingerprint (sha256): 1d:33:88:84:8c:70:f8:8a:94:11:f0:fd:7a:93:a1:14:b4:88:ca:47:fc:fd:06:90:f9:bf:95:fe:8e:04:ad:bc
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
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaDCCBVCgAwIBAgISA3sHhfUuSixutsxOxTIztcWPMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MzAwMTQxMjBaFw0x OTA4MjgwMTQxMjBaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAuya8uw+hafpx0xVfx5jvHK2R22Df+bxJ reyd2qP5DNgq69dkDu8baahAa1kMmNkQCdab6dF7BDSDNoTgDaZKXAEDaop/L98N AwEcmduLsYDSW6YUx8nYyDoS6531OHvixk3kcm/2ONq9Q70B4lIzFdWy9p/B/Mxq rWpQw+jn1EmJI5CWVZEbMoAcjaAG2HU6DBCvvBKHajxF1GLwOAxNbsodDG3H1R5R JdngF0U/g+U/FWZB0EMeBw0gZF4OFihqpPWeMYfdJzz7P9RF4vETqr9GGK5wsMfN UcqWuL2KrCpRt/ndKX3WRatgmmaRjLrK+/I16nzTYnXURXWDTPi7PS+twAEa2NSl SNuPRKSOcD1w/AtYW33nJNLNtzj1MMU6XsYWmQupe5yJ2kHQnSrPkunpXDf9xECl Sorkj8eBOv8KCuUGu62MPwxCzF1fRRKNw50+1JXS5qOdW6yAVyKuYr7rFWkWqHBx h+tgJxhitgBnolJNIel1XP03jFVzKKm8BC8Rje94QZboRqvLjpfy1N41Q711Zt6+ f6QCCeT/7MZPCxlP9cSS+6uaka2UnwfO0wHzs5OAhPnG7yxvdiw6nXRpP3+HrFMX f2BHotk4fhjYA0+dRUztKZLmYW6QHhbTc6qTyadCqk0RQbDyZHSqsxFHzqoukckK 1+SAcZTKXL0CAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUXwpP Fm2F57rVHXciJ12nCTlpoJ4wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFrBpz9RAAABAMARzBFAiEAu3zZj8sfF6RMdJjIXWKB+5Ti 9vcFmUpPrKXZedZwVMkCIC2e90Zs0FnoEz/p1iTcJ1g6b9AJetertBN0Ooy6emQ9 AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFrBpz/XAAABAMA RzBFAiEApLgyRDMGpzPIUAg+RhRuxB/nNg1a9L8EOo/1KJ05kMMCIGH0GTXY1yv3 OloS5XUOhiVjRG8YhAI1ODdeskydwG8YMA0GCSqGSIb3DQEBCwUAA4IBAQARYWr1 SqFEE3vuKi1i1XG52HkrlEvDfQjYIqfl6tPxUDNrj83w8CgQoh8s64ZZt9vvHWre CjuWMWkvfeiPY1rdH9a/wWAbcKDSwDvxpNwPnLks5WWcj2duvkxXgd5zjLTNPT/x nDtBVWNTnhg3TrJ2cZMEEiTWx4pLCZ2pkKO9nGKNgivgN9lP62+TKMhktUwaMSVL rS+Kpt2S3LEBk2hlKRs4YDl3XE/YigGB43qhF6u/VypJQa/qkuYuKTov0VYynVjd DPxgO0WnZsensap53LDGwZF0EbpQdJ7PoPsc4S+DUhgPYAmIM+mcLuU0SxD/N8BL RJ7lrkULih/0GW4/ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAuya8uw+hafpx0xVfx5jv HK2R22Df+bxJreyd2qP5DNgq69dkDu8baahAa1kMmNkQCdab6dF7BDSDNoTgDaZK XAEDaop/L98NAwEcmduLsYDSW6YUx8nYyDoS6531OHvixk3kcm/2ONq9Q70B4lIz FdWy9p/B/MxqrWpQw+jn1EmJI5CWVZEbMoAcjaAG2HU6DBCvvBKHajxF1GLwOAxN bsodDG3H1R5RJdngF0U/g+U/FWZB0EMeBw0gZF4OFihqpPWeMYfdJzz7P9RF4vET qr9GGK5wsMfNUcqWuL2KrCpRt/ndKX3WRatgmmaRjLrK+/I16nzTYnXURXWDTPi7 PS+twAEa2NSlSNuPRKSOcD1w/AtYW33nJNLNtzj1MMU6XsYWmQupe5yJ2kHQnSrP kunpXDf9xEClSorkj8eBOv8KCuUGu62MPwxCzF1fRRKNw50+1JXS5qOdW6yAVyKu Yr7rFWkWqHBxh+tgJxhitgBnolJNIel1XP03jFVzKKm8BC8Rje94QZboRqvLjpfy 1N41Q711Zt6+f6QCCeT/7MZPCxlP9cSS+6uaka2UnwfO0wHzs5OAhPnG7yxvdiw6 nXRpP3+HrFMXf2BHotk4fhjYA0+dRUztKZLmYW6QHhbTc6qTyadCqk0RQbDyZHSq sxFHzqoukckK1+SAcZTKXL0CAwEAAQ== -----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 303201589070866654465662294860415571969423 . . . . . . . . [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 2019-05-30 01:41:20 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-28 01:41:20 +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 763510761453467315123347118735649975577424173509427327063796716177540420693004920823494628762100686428278209916259986218718159461036963911835196310288683723104117202575602170688494563603141520892305120725523994193122106761432481266795716485689090611594075881802193102902353186584765279097165554809960534551741037484836760096263369243625333487726810712524068457725500689246727656059740559117119906570367185583594310019915673440174766434024839966249414521487504130732113023783083796395120094038680444409301484594804623927708191689401346784742124543063647549823945427736599000603237883290630822733571562407983324967550683667073668872910673385636165430937008734467469564164429892954037789058635855934624325501833509507480970364570071175242791321716097484287582805814685939069549164457914506061994073275348800582484696821873456814526098786788882178051611749477146444161474897312987211527551787702986930912028708465681104533120450153381284033740079847370890552607143287999732291672165703117031268315992687646779427140830093188752912882794609421323267905463713343316401065726743041038211852791407988710270404488411551651052803080338421898271768134512856150335723547950548512960107405962582065136768611107097454553945753585848652261417966781 . . . . . . . . . . . . . . . . . . . . [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) 5f0a4f166d85e7bad51d7722275da7093969a09e . . . . . . . . . . . . . . . . [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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b069cfd440000040300473045022100bb7cd98fcb1f17a44c7498c85d6281fb94e2f6f705994a4faca5d979d67054c902202d9ef7466cd059e8133fe9d624dc27583a6fd0097ad7abb413743a8cba7a643d007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b069cff5c0000040300473045022100a4b832443306a733c850083e46146ec41fe7360d5af4bf043a8ff5289d3990c3022061f41935d8d72bf73a5a12e5750e862563446f1884023538375eb24c9dc06f18 . . . . [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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