yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:58:d0:3c:26:06:17:37:b1:72:37:f9:6b:07:bf:a9:6e:94 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): 03:58:d0:3c:26:06:17:37:b1:72:37:f9:6b:07:bf:a9:6e:94Serial Number (int): 291558497816472218713831229201606148451988
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 3e:22:83:30:06:15:9b:fc:3a:0d:12:0d:69:e8:66:48:f5:b3:e0:22
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 4b:7b:eb:ca:ea:3d:7a:d9:f3:f0:db:2f:d9:75:f1:a0:fa:d5:e3:68
Fingerprint (sha256): 36:bd:f7:37:a0:56:c1:81:90:00:b1:82:cc:40:3e:cb:80:1b:cf:10:1b:c2:62:66:20:23:8c:29:7b:94:18:50
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
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaTCCBVGgAwIBAgISA1jQPCYGFzexcjf5awe/qW6UMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MzEwMTQxMDhaFw0x OTA4MjkwMTQxMDhaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwXZzsvNmVAq5UmphfqhkJRWgdW0P57LR mSfJ9HW64OQ0shemxZOCwgmLFvAcWPkDiDfAa+AhnlN0ekx5/29yh+7SKBpybvX1 nijpOvp7hcEcSIwSn7t3vexmQ/XUO7j4e0GQdmgRqBocklGFEyPGD13WMM4OrDGZ HnQcRHb6lRjXlKsXcDnsQWo6A64pigIyH5LebfmGYLUAsUcQZANmYf9uBEQeVcyo PuiJ25mpHwoR94dBY5VxVB9PZhkmSiwk1A2LAKkrsOv8ZfNLKr89cU1MycY1ZUDK cOKXbVfCVyLkvBUOqSl6RuAO0mx7in0L1EOwyNL1MF2g5UHrXGRE8Lb2Yw87hX4w 8rgf6R6jN3eOljWAyD07QsI3UbG89/WfY7TyNiutcbYls0v4xo0rXtT9e5mQYVVA MHKEAc/YuH3uo9DXsJFw5oJOTSwVAJgRmou1YGmpah496YsvDM4dl8fhuzFs5Mrn UZXvZV2UYiTXLaPA0S7nCe5T//HDmeVnWY1NHvmYpmdZWuVes8YjTRXQI3qopahd 7Q1lingIP+IPqbraOOnxKKNslDBlLu9tbR/yO2cHhjOYY/B1nf5KoxZlbd4ZRiWZ E/Wiw7lMXF9iL14Hs5P5uShoXpAztcNf4cwxWeKpogdqifEsWLR1YfbLYolA0PcH hc9xkAtXuTMCAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUPiKD MAYVm/w6DRINaehmSPWz4CIwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFrC8MsCwAABAMARzBFAiEAiZrmkoTnsQKST2SA2tJ2FR9e v/AbwgvRXpbFzKs5lkMCIERExpbUDwG4bN9K4k5n3GRnstnVPiW5MEN8dtL70EMw AHcAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFrC8Mt7wAABAMA SDBGAiEA2mHZJY0CCkyudbdQrO8eDS/i31k5lWRf9rsx7D5cToACIQDNnJUaofsz c5xMpRqUW8gPIgD4IQoAg2Rm0cKF8rQ4zTANBgkqhkiG9w0BAQsFAAOCAQEABHPo 07C012EI/YUOeIXNiPhZ/xMROIV40Nmbqi/EKpGkiq9egM8IeoRlXT+8wzsV9E9g 57ryFrd3zwNbxBGlL31Y+u7JWlI/igtycBtKRu48hyT7fxgabpaL9lozP26ihmIZ oy4V9rrOxs/voGNsO2eEBwTGzaF0SdwutU8L7ya6lhXikwOH97EjFf3sHWvoX9ap nctemCYrrIAKmonPYEKoyEBCOJQ3JNszI1Ow4xa4wrqFkgqEAEhhJy5zMkS4dpK7 /tLjfoFRcssUA0hIUXHYqfF3NWgzUIMoItuL/nlcuDSf0PxuakmjNooQkrg6Wsff 9zQzAX/1rum2L72ZAw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwXZzsvNmVAq5Umphfqhk JRWgdW0P57LRmSfJ9HW64OQ0shemxZOCwgmLFvAcWPkDiDfAa+AhnlN0ekx5/29y h+7SKBpybvX1nijpOvp7hcEcSIwSn7t3vexmQ/XUO7j4e0GQdmgRqBocklGFEyPG D13WMM4OrDGZHnQcRHb6lRjXlKsXcDnsQWo6A64pigIyH5LebfmGYLUAsUcQZANm Yf9uBEQeVcyoPuiJ25mpHwoR94dBY5VxVB9PZhkmSiwk1A2LAKkrsOv8ZfNLKr89 cU1MycY1ZUDKcOKXbVfCVyLkvBUOqSl6RuAO0mx7in0L1EOwyNL1MF2g5UHrXGRE 8Lb2Yw87hX4w8rgf6R6jN3eOljWAyD07QsI3UbG89/WfY7TyNiutcbYls0v4xo0r XtT9e5mQYVVAMHKEAc/YuH3uo9DXsJFw5oJOTSwVAJgRmou1YGmpah496YsvDM4d l8fhuzFs5MrnUZXvZV2UYiTXLaPA0S7nCe5T//HDmeVnWY1NHvmYpmdZWuVes8Yj TRXQI3qopahd7Q1lingIP+IPqbraOOnxKKNslDBlLu9tbR/yO2cHhjOYY/B1nf5K oxZlbd4ZRiWZE/Wiw7lMXF9iL14Hs5P5uShoXpAztcNf4cwxWeKpogdqifEsWLR1 YfbLYolA0PcHhc9xkAtXuTMCAwEAAQ== -----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 291558497816472218713831229201606148451988 . . . . . . . . [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 2019-05-31 01:41:08 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-29 01:41:08 +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 789258968379438266187150104612491227606769668976002105704279507277944344154877317994184357361838048027037352796840498074943813490097184282794976947385921775473086867831549904317150956346018422488082511337089865334842414455811111051268418871437056309942176435309994228583885370655618285929350272709133075237616762118669456232049777581127052853161253182145015821267679863716661646859360614798227152510154314578439920485523908650750968224952075041680606131233988099202972540575269730308270049754696478585553798356240423608588040238837542808402926518392241814941364669498723219097733333843527715172004786277031144789528358397886185682156479818441766833759252031286709958864622300897455500437793331286178982406732957715955436414845435124204772180371715824221972534743752662514792010840511620907714581917143296708599404142613459721057142647732765520191458199033125061025509247390836177240435736550932524420190857317988272308424469214779140621363109905518538570123120819041141693094656093392655802625403978464650427223860109048987322487329007505889735839172451049629704650743303022455091861996407832388723471091174459294193462681200796097423516013136737004193305249209172648341476883289552856934735266302311744273743713790224393412904728883 . . . . . . . . . . . . . . . . . . . . [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) 3e22833006159bfc3a0d120d69e86648f5b3e022 . . . . . . . . . . . . . . . . [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) 00f1007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b0bc32c0b0000040300473045022100899ae69284e7b102924f6480dad276151f5ebff01bc20bd15e96c5ccab39964302204444c696d40f01b86cdf4ae24e67dc6467b2d9d53e25b930437c76d2fbd04330007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b0bc32def0000040300483046022100da61d9258d020a4cae75b750acef1e0d2fe2df593995645ff6bb31ec3e5c4e80022100cd9c951aa1fb33739c4ca51a945bc80f2200f8210a00836466d1c285f2b438cd . . . . [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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