yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:37:37:10:99:0d:50:8c:dc:fa:05:56:e4:8c:f3:7c:03:c5 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): 03:37:37:10:99:0d:50:8c:dc:fa:05:56:e4:8c:f3:7c:03:c5Serial Number (int): 280125581696713826925933229694691437183941
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 28:57:07:4f:b1:10:81:78:84:bc:6c:89:de:2a:a4:73:67:e3:0c:3f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 7f:de:18:cd:88:60:13:31:12:cd:75:ed:25:c7:1e:22:d2:09:af:67
Fingerprint (sha256): 19:5b:13:ff:ec:bd:63:41:ae:9a:a3:4c:e7:aa:73:d8:e4:f3:28:f0:a6:6b:5d:da:14:7d:27:63:e0:49:3c:0e
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
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaDCCBVCgAwIBAgISAzc3EJkNUIzc+gVW5IzzfAPFMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMTQwMjM3MTRaFw0x OTA2MTIwMjM3MTRaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA24c/E4c9ouCk93MwoCOzaccoxYoqdsoi fGa00INVmKSZzWsznzjG3h0IFE9bvhhAq+QVR/03GI0cUh7RmNqR/gtXleLLQeHN xQ7CXYqVc2Sx4MmKt3yf5LKJJVORzCfsyy0ce1WQWBWkOhzBYsyFuQPokNcPfyik rUGERIeCcdYT9GbSKw8zddD8iWAOHvWw2eQCNa6tIdQczXzFoviIjNb8LfhUKSJF mcU0pAgGyuHCC7w9NNpKJjTDvpcz/5loICtgHuaAIYMcYkL75Q5PbEiTYTRs2E5h QDnaX2BDxf9D5gvHB4wIFVXTc02uCUWUDmRTld6AlDKH+DDWvEXpWpXWo8eqCDIv pKDiHE4xn0TglucgP5QKnuU/V9M2BLWN7D5eDNrp5qy/S/P58ADWu8hqhirG8Ld8 PnDqe/O3z++x3GTtE1vQuDI4DLFeVqYTxDrJMNiAyTDDslui9rpC7YOno0CzD2Zs k9fP9Z7hqnZuR3ptmqs4fqZVYdljzaSE32kAdHh5Wyg8E7On5qY89u+908HbQg1K ILX1fK+z19qUcTaEtuaOKRWpL02mREGf0WTlV6z40pPXjO42hygRCKltpgCWkwnU ksTGix+1chtk9ibo5JNNlxVQ4OC4OsWBrvw48N9S+0iBgMJzvhlXrTRv1nkOwIuI 9Upz2zAdaK0CAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUKFcH T7EQgXiEvGyJ3iqkc2fjDD8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFpekaBFwAABAMARzBFAiANx1UUSNFV9bc7+bdgaL7TK9l5 SSNQ9x6B00LzFqdlswIhAOPbYkRa3E3vwa5ZSS7MvqwXX7beD6POVQuNpUTY5Qb0 AHYAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL2I0AAAFpekaDbgAABAMA RzBFAiEA28Bu/J62Mf4X6P7lXXlVcSUXLleihm6dJxp9oLLRnUACIBgQs45/SICO kP4pYACSk0cnI3FmD0NqtatIQcsSsw9hMA0GCSqGSIb3DQEBCwUAA4IBAQBJhYca 8mc7RTgW1RSjtgkz+q+yLBor2Dhnwq2NYTQi5AWH/7CGaenEF61WdaZ+qA9srBTB Z0CMPBi0aqnjvuxAcXcmpVL2UwZWTD9EA4zira8CmkO7SCblpX//gqoosC/u8zvM zpExkkD6iomkHevuo4Pe8s/sgC6u+eLEm2J5wgCQF7FAbad2jZbRWLsP9cLEpjq4 7unl99IHN8UAlInoF17SKi+y/3c1/92McZLzJNpnEHVvUthwjlgPmWqMSwqqbjL4 huuYH29Lt2C2IqMPypWIHB9FY/VkpKGl/YYT+wsZW+ShfK5Qv9rE1yx8VsFp7lQq T6J9UZMTfqjwuQz4 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA24c/E4c9ouCk93MwoCOz accoxYoqdsoifGa00INVmKSZzWsznzjG3h0IFE9bvhhAq+QVR/03GI0cUh7RmNqR /gtXleLLQeHNxQ7CXYqVc2Sx4MmKt3yf5LKJJVORzCfsyy0ce1WQWBWkOhzBYsyF uQPokNcPfyikrUGERIeCcdYT9GbSKw8zddD8iWAOHvWw2eQCNa6tIdQczXzFoviI jNb8LfhUKSJFmcU0pAgGyuHCC7w9NNpKJjTDvpcz/5loICtgHuaAIYMcYkL75Q5P bEiTYTRs2E5hQDnaX2BDxf9D5gvHB4wIFVXTc02uCUWUDmRTld6AlDKH+DDWvEXp WpXWo8eqCDIvpKDiHE4xn0TglucgP5QKnuU/V9M2BLWN7D5eDNrp5qy/S/P58ADW u8hqhirG8Ld8PnDqe/O3z++x3GTtE1vQuDI4DLFeVqYTxDrJMNiAyTDDslui9rpC 7YOno0CzD2Zsk9fP9Z7hqnZuR3ptmqs4fqZVYdljzaSE32kAdHh5Wyg8E7On5qY8 9u+908HbQg1KILX1fK+z19qUcTaEtuaOKRWpL02mREGf0WTlV6z40pPXjO42hygR CKltpgCWkwnUksTGix+1chtk9ibo5JNNlxVQ4OC4OsWBrvw48N9S+0iBgMJzvhlX rTRv1nkOwIuI9Upz2zAdaK0CAwEAAQ== -----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 280125581696713826925933229694691437183941 . . . . . . . . [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 2019-03-14 02:37:14 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-12 02:37:14 +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 895597352223494290237175223680168787594822424348057246940950129861209020277620361666903982362716331700388306158355096724564316033192404279833508617576131073850880637385269058404968180337491296336965171159017132501679143222818501479899694474827776681111221474406792362579830848048102372243591756477051503293882731674196988707956116154669520847111268445859706860993817814185215081429541628271539389597938199496507978753520155995816589350504958742942149605145174338077006921854768047424761585663559282993778537648606350768684661221479510950610249707461527667245171079920273310086269834231416789537072796633043902493177373600027801317055828609874933542574171883047506455907149590488015432957595522908591416034856741991588015724260858621218383202890786639659408848360477491482313739247355445894494585999413761719973986232925296029247871004594619704858134690250597661680402312579071695959582615588115770192413577900864960680867508905831564135887991288784989958914053470768604152072083777361093339367450066341407043051722936038649748525761594680429575016348848998957726250605418475632151332658524938020518711215420758737775736315471535186535940279577973709343261861570403816735024698153074653730703484254704255968003414369533034565593819309 . . . . . . . . . . . . . . . . . . . . [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) 2857074fb110817884bc6c89de2aa47367e30c3f . . . . . . . . . . . . . . . . [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) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001697a468117000004030047304502200dc7551448d155f5b73bf9b76068bed32bd979492350f71e81d342f316a765b3022100e3db62445adc4defc1ae59492eccbeac175fb6de0fa3ce550b8da544d8e506f400760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001697a46836e0000040300473045022100dbc06efc9eb631fe17e8fee55d79557125172e57a2866e9d271a7da0b2d19d4002201810b38e7f48808e90fe296000929347272371660f436ab5ab4841cb12b30f61 . . . . [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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