yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c7:d8:7b:89:f4:b3:97:50:77:20:ae:62:3c:75:51:b0:2a 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:c7:d8:7b:89:f4:b3:97:50:77:20:ae:62:3c:75:51:b0:2aSerial Number (int): 329340803510228003879731742094504196419626
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 1f:d9:bf:48:0b:c6:fd:3c:dd:4c:d0:86:76:9c:27:de:40:bf:dd:53
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): ab:79:6c:de:1d:45:24:b2:a5:89:22:3b:04:c1:7c:da:3f:0f:5d:87
Fingerprint (sha256): 2b:62:36:3c:bf:7b:d2:99:0c:23:0c:f5:1f:5b:71:b7:23:a1:92:0c:ed:0e:06:f3:9a:61:79:d3:fc:ac:f0:7a
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
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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----- MIIGaTCCBVGgAwIBAgISA8fYe4n0s5dQdyCuYjx1UbAqMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MTAwMTQwMzVaFw0x OTA5MDgwMTQwMzVaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxCf+H+8GjuWVO3u05ct7ohoGeNYG1bV8 YKMBnC9GwQlc9nlWF9s+fKBfoRM8ixoXEmDbO70xqhNrMlysMeh57tDnZEvr6NF/ 85dLfTwlhuNgsHr+pGnslELCSSnIUaOmaMseqcDONgbILsr5F1UlpmwIXA0ArbXD yle2dRy3YxECe27YnkAXpkgUGq8uki1Vd+xT2p1OoCxPk8Y26xPCftNinRmDXQXL vzQReV/2/5dh2cmOBoTKCVHTlMMs9n/5l+IvpHBaluQtcyqdh598XWofymbToY3N sPDw6T0Bai9/3lbdkQaW9J/YvjxzKgSTUS77dF7vlxmN5y7pAILIpI/V1ROUj4es GnMXG4iqBqZRXlVMhYxiGXEJtKY7BdFlhE6eVaxj2sF7zE3xFwKX1FLlTOndCiuK ws6Lj4Ue5vogLJ6yCIpAdF6Y1agq9z40FBzdlyMLHYz262jl7nzWzwHqLlSioFKB VgCP77E1jIwbQ7dag0ADTy3CuS2D9Jhs/6L00VW0L865XpBz54eO0jgbQOEbF8E9 4lvZeOLo4jMWKleDjsn+Cc7kiHbkrd42NYKXQOueuFSubaY+OJ4y3B8wfR9NyJ78 1Gope1ylhV9jIB6R2IsojTHUuYtdr9QamdbjFeqfWRFlpe+PGEKmpfhPEl+vISuP SKnUJhX8cTUCAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUH9m/ SAvG/TzdTNCGdpwn3kC/3VMwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFrP0JB1AAABAMARzBFAiB87TAC1dfPY7r6bjQa5ATXVBVG lNv5Hrg8dDGoDd9XZwIhANS7IphuaiTESp5JlGPTxtE++NZQpwO2krFFRBhEJnwb AHcAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFrP0JB9QAABAMA SDBGAiEA1sVPaawe8OR1x5lvvUJzJHlEZDRvaUSDFlLLDdPBSCUCIQC4fJmM98xR GtZeBfkD6DED2IPj8NfNh+HL+EQP1gcjejANBgkqhkiG9w0BAQsFAAOCAQEABTZH ZyVJmNHmx2MgDy7QadoR9RohK61fCnv5+NSmqjvqSXDgDNetAgBiUJN6uhHE8QAi dyBVjoEAwqX2ddt2hwimf7vApkdN2v5r1o/2q0geHO/T7ynPZAknCc8yw4b71m0V Pm6Rg/iGeeTob4i1EERlBLmzma2cCmI2k1dj6017ukEbOOME23Vl6sTMbOJAM5ya +Bi7mf5H6/teaFmtVewpkpZ9iOKNT+iNytTGh6gcUUA7DzXja+opUo48vwDs/gsy SJwiAE9Hrgbe86stOIw0lNPS3sywsaP5WCYGA3H+nJPOV4YxMV84blFZr/5SfPI3 j+pczKNRryK1AjoVhA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxCf+H+8GjuWVO3u05ct7 ohoGeNYG1bV8YKMBnC9GwQlc9nlWF9s+fKBfoRM8ixoXEmDbO70xqhNrMlysMeh5 7tDnZEvr6NF/85dLfTwlhuNgsHr+pGnslELCSSnIUaOmaMseqcDONgbILsr5F1Ul pmwIXA0ArbXDyle2dRy3YxECe27YnkAXpkgUGq8uki1Vd+xT2p1OoCxPk8Y26xPC ftNinRmDXQXLvzQReV/2/5dh2cmOBoTKCVHTlMMs9n/5l+IvpHBaluQtcyqdh598 XWofymbToY3NsPDw6T0Bai9/3lbdkQaW9J/YvjxzKgSTUS77dF7vlxmN5y7pAILI pI/V1ROUj4esGnMXG4iqBqZRXlVMhYxiGXEJtKY7BdFlhE6eVaxj2sF7zE3xFwKX 1FLlTOndCiuKws6Lj4Ue5vogLJ6yCIpAdF6Y1agq9z40FBzdlyMLHYz262jl7nzW zwHqLlSioFKBVgCP77E1jIwbQ7dag0ADTy3CuS2D9Jhs/6L00VW0L865XpBz54eO 0jgbQOEbF8E94lvZeOLo4jMWKleDjsn+Cc7kiHbkrd42NYKXQOueuFSubaY+OJ4y 3B8wfR9NyJ781Gope1ylhV9jIB6R2IsojTHUuYtdr9QamdbjFeqfWRFlpe+PGEKm pfhPEl+vISuPSKnUJhX8cTUCAwEAAQ== -----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 329340803510228003879731742094504196419626 . . . . . . . . [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 2019-06-10 01:40:35 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-08 01:40:35 +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 800247564981896609263942019099040326791811152024580366958730521026245632973071738120416711705261893743305124928640651278269643756875859814873977663947914419284534981576756051652665078038251866119429209493176498683785803756279343145450777605034149840191214544794928273552405597740172261363456603397819926376434796406978772629994819793080119470348055906847292918500153876494756275062704490475664532907941827063003054758062718348970438942505108559748831365265559183123342838013465894169628360653446948376835329956980731912050559183249623953439981073835813418513608329033894151378202093593077184616301553494416485959325603382511014502096949168343053235284985828116528994729283624564356096102351658438816709507315604538871299143331927006108300220610429551185205885691771672753665398254076276863510985482014017385807174357634937658333808553304981406264903885688286533583271112011932581359510470501988914342938343391782001071009655099761331914073752707289375830419687795822841039996691936480073883736376245211266402653027852178853819604686915567946286763435833706246279468715859122060230561810318560541938358571400115572769143748249036398989961053881935221889722766299136687248770915148603438555109092667095473628900671837941007233614377269 . . . . . . . . . . . . . . . . . . . . [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) 1fd9bf480bc6fd3cdd4cd086769c27de40bfdd53 . . . . . . . . . . . . . . . . [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) 00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b3f4241d4000004030047304502207ced3002d5d7cf63bafa6e341ae404d754154694dbf91eb83c7431a80ddf5767022100d4bb22986e6a24c44a9e499463d3c6d13ef8d650a703b692b145441844267c1b007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b3f4241f50000040300483046022100d6c54f69ac1ef0e475c7996fbd427324794464346f6944831652cb0dd3c14825022100b87c998cf7cc511ad65e05f903e83103d883e3f0d7cd87e1cbf8440fd607237a . . . . [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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