yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:7f:b5:70:67:90:9c:73:7b:6f:10:63:aa:52:19:a8:0b:3e 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): 03:7f:b5:70:67:90:9c:73:7b:6f:10:63:aa:52:19:a8:0b:3eSerial Number (int): 304793892299270614322487608897990549834558
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 4e:6a:9e:fc:b5:2b:55:6a:f6:f2:03:3c:91:14:96:fa:14:fc:56:ff
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e4:5b:da:1c:97:0f:4d:d9:95:1b:90:f1:2e:0b:3a:17:b6:95:96:69
Fingerprint (sha256): 43:cb:e4:99:94:d2:04:cc:ce:9b:6d:58:13:d4:2e:fc:46:b5:61:cb:0f:7a:7f:87:01:9a:a4:a7:65:e8:a8:d8
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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www.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----- MIIGaTCCBVGgAwIBAgISA3+1cGeQnHN7bxBjqlIZqAs+MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA0MDUwMTM4MjBaFw0x OTA3MDQwMTM4MjBaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAqWdveDuDu4mVygEnHRN7vUPWYQ84gEn+ 1dPZv0zeO6H5IZYS/k9cW5XdCfV7cJ5MW7dIe0Xj8NEzKcXwkGl9rHMit1JcHCW0 dXgAu592DMqb+M1dfx4OYEnnnKE36YyKA7a/RRdJxS5+NqovOONgoaoul+WMsOXA rIhsCIcAC3VLwCnz8WNT1mI31xG3fq5MVvQUObhXAOYbTI/GiJnySuxbqLsEZOeL cqbSZy6DI/f2Iijr47xmLbRC5HoVUIzb5g9W5Mi3J1UrHlICZRbS1fylxnnwSScx FiX7tYltyhkHTqYmofxdC2004HQnuowKy9kYsmPY3C6rbO3oNgTTDmJUhP5xYvZ+ RY4YAdPkg1Vt5X5JiwE91egVOZ0mJBzAnfpRUkPOkfcShG/0fE6IutkSLpNRU0wr rQbqIjYWo3lHXXZNYISmPF1laQT2kNVLUEjBginFO5cCYyw+PSBdiVQnkv30TKtK i/FBH0ZbeGuXXCxaGAHCcTajByGjIu2b+of6jyNClIVAdTovSCy9Epca9t0xQNOf ZzxLkl61PHbKlyJtvBMWbVVrGIClluaFkM34Dva/UDbP4OUX7Yqx0oQhOhd18sN0 hC13RH/67yDsJR4UcYIFSwW44VPIhoCcOPIt+QGgeR8DpDDWAGdSe2bBEh/+WvoS yD5smVrIMsMCAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUTmqe /LUrVWr28gM8kRSW+hT8Vv8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFp61x6YgAABAMARzBFAiEA073bHAQAQLArxEo2R9YjnzP0 uT2sfgKeiWFfqqKuWIkCIEuerVVALy3/9YDjEeT3LkCajn4PWKXUnnU0EP8fmL0U AHcAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFp61x8rAAABAMA SDBGAiEA+eQNo2W8sGlB7WxAD+x01QUUuJ7825rIFA0WMUw1lZwCIQDIWaI+vdZq KdxBEwartUVQcEszINSfaQ+ZUwXzBv8crDANBgkqhkiG9w0BAQsFAAOCAQEAd/P5 6h7CygPlWHlAkD7rWJ0cDSlO3G84S7GvDMcCzun1iegISB0NJZbVMI8iskSB3Xon kcQ88s6gfFgXiLQ99K0KGf0AKMJfeKc4hjXT0qxGHON6vbnC9mTBYz5k976b4pVw LYYN2k0rIaXgw07Ngcl17or+qcKXfd8RyVW1eJYGx8RWJj4TOE3jTNguR31g0Jy2 1GWdZzfEq12/hOnEMfsdZfrGRIZOPfw0XQgbGuYXAesXOeAiNbVFymQc5Mv7Kl5v K6ZVw7q7lepxXflBIXuZG2fUb/g74uEJ8WYO+6KJNq3z7A5j61ND6cysxxniwBjQ P8SCzbWL5tIX9mzD/w== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAqWdveDuDu4mVygEnHRN7 vUPWYQ84gEn+1dPZv0zeO6H5IZYS/k9cW5XdCfV7cJ5MW7dIe0Xj8NEzKcXwkGl9 rHMit1JcHCW0dXgAu592DMqb+M1dfx4OYEnnnKE36YyKA7a/RRdJxS5+NqovOONg oaoul+WMsOXArIhsCIcAC3VLwCnz8WNT1mI31xG3fq5MVvQUObhXAOYbTI/GiJny SuxbqLsEZOeLcqbSZy6DI/f2Iijr47xmLbRC5HoVUIzb5g9W5Mi3J1UrHlICZRbS 1fylxnnwSScxFiX7tYltyhkHTqYmofxdC2004HQnuowKy9kYsmPY3C6rbO3oNgTT DmJUhP5xYvZ+RY4YAdPkg1Vt5X5JiwE91egVOZ0mJBzAnfpRUkPOkfcShG/0fE6I utkSLpNRU0wrrQbqIjYWo3lHXXZNYISmPF1laQT2kNVLUEjBginFO5cCYyw+PSBd iVQnkv30TKtKi/FBH0ZbeGuXXCxaGAHCcTajByGjIu2b+of6jyNClIVAdTovSCy9 Epca9t0xQNOfZzxLkl61PHbKlyJtvBMWbVVrGIClluaFkM34Dva/UDbP4OUX7Yqx 0oQhOhd18sN0hC13RH/67yDsJR4UcYIFSwW44VPIhoCcOPIt+QGgeR8DpDDWAGdS e2bBEh/+WvoSyD5smVrIMsMCAwEAAQ== -----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 304793892299270614322487608897990549834558 . . . . . . . . [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 2019-04-05 01:38:20 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-07-04 01:38:20 +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 691108205822352599972587432810352760284228601959189403677833696120644838464743621052302093985362758622203402503991894890492720954118744151086072437256156363010175210617639343457584941465564286071683620736413780440099911902730364200134992165108355608686075944269481978689239160549771881564799097442771908041765203809021730069150897391440967980291736205677313864103033070479126071413646673530518084260919381227478962603037060549445997578788578531713464406783755298650678455416762766400475804247789891149632275837948746627647093106820456586978374757631024212189005859438355335704458723693753308006567307151711461518965999910348716304869233397639388375577115244062359837778995277507040867778699114311397453053678343394494160905229403263980088744563569198036657263005689545939730915225408852663140978754574631453455987734950835044697833137626483829452605233665534248102938306944859425412364518505250017544690516875754732753678642464627663326629555713757076015513635457932451655963129793088846348003611420083170409399640997673422250890152676299745085210686799629390019402503553594796003738650424813732106405502340752822535484051044055985803228237866370397419373105059919765963094279404951237070273151202230926470546094589097095151674208963 . . . . . . . . . . . . . . . . . . . . [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) 4e6a9efcb52b556af6f2033c911496fa14fc56ff . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000169eb5c7a620000040300473045022100d3bddb1c040040b02bc44a3647d6239f33f4b93dac7e029e89615faaa2ae588902204b9ead55402f2dfff580e311e4f72e409a8e7e0f58a5d49e753410ff1f98bd14007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000169eb5c7cac0000040300483046022100f9e40da365bcb06941ed6c400fec74d50514b89efcdb9ac8140d16314c35959c022100c859a23ebdd66a29dc411306abb54550704b3320d49f690f995305f306ff1cac . . . . [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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