yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:d9:b0:b1:9b:91:ce:30:00:c0:d6:f0:8e:c0:58:0c:b1:09 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:d9:b0:b1:9b:91:ce:30:00:c0:d6:f0:8e:c0:58:0c:b1:09Serial Number (int): 335412997736251876444142354408224336949513
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 0d:6a:25:f4:21:84:74:09:e7:42:55:29:ee:53:50:a0:61:a3:58:cf
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): cf:5f:62:9d:61:53:44:fd:30:87:68:0a:bc:17:46:a5:8d:62:e2:9f
Fingerprint (sha256): 31:d4:b0:f6:e9:10:85:66:06:40:75:d4:aa:0c:0f:58:7d:c3:c3:09:d0:68:26:af:a5:f5:7d:e2:df:bf:b9:59
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----- MIIGajCCBVKgAwIBAgISA9mwsZuRzjAAwNbwjsBYDLEJMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMTAwMjQwMDFaFw0x OTA2MDgwMjQwMDFaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyZ/2EzcNJDTbBza/BDkBEI2bTsBB0kwY w7qg/Js7to71Lq+vKCas7ztuR9wA4JWoiSwaK7UwvALt7Y3URud6utZwMTWeH8M8 RdexIaLB5wNmp158mVPxBSgOjX/KpsiRrGRiGrjlF09kfdfEAb+6IPWrkFLVhBb3 OhK4Rb06ctJacttvcXvc4ZUxMJ2kuYpzIgC6XV3PFFwJgMhcKWPFPjdF/4x0qizR hFlLuuuV2Xp6ItufRojZc3C7uTmiqpNRq6c7BAjiELab8hjDTqdKfAIPMZAkFKqE QxRuHrXgN78oYlPiBz8+mIXi89li+ZpSRweWtsCMMNFVDGYT2h3PQWYmS7h2lfEz wj5bw8Q5a5bvOsPZXq52dvsMQZBnBHzXjodOBtLcx2tsU9S6pZXU0lXe48GitX4Y rtQXE9y8clAGXmoz45l0HX9SJkK5TB6GFgxDPmVT6O1QM25FsuDt3jCc1rM8uSE1 g0Ac54MnDFn1UXBFCGPQpHLgoRZB43lmgqsf1kdijf8sDCXW5GKSxrPwfxo2vqGS plORG/DVU3gxYZwn4Qm1zadHcEh7o/CaUSSeR3qb7mr0Jk+iOV8UCoVoHpOR7aOK WWLL5XPHU8cIPx2VLbeOyLPJr8z0su/LTIWRVRLpp1AaDKDVlLwGqJgkcKO8b9oU y7BFNzuRmRkCAwEAAaOCAnkwggJ1MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUDWol 9CGEdAnnQlUp7lNQoGGjWM8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFpZa+augAABAMASDBGAiEAjbo6zTEdGctmF5dUyi/z1GmU JIXR+7sUpBIJE2xDgjsCIQCTh1+FYgw3XXrQM7OAQXA4L2J+wPpZl23+nxE7iMJg 9gB3AGPy283oO8wszwtyhCdXazOkjWF3j711pjixx2hUS9iNAAABaWWvmxEAAAQD AEgwRgIhANVw4b6gsuPGlxMTcbWCWl/JY/K7CbniQe2qw2b5ULlAAiEA7UrnJwWP rSBp6/6WYKaU0EoHwmGWCDFPNaCkbbxej8AwDQYJKoZIhvcNAQELBQADggEBAJHG AcYOpGFWKMbWpwBhnvp5gwvaFZVzhEoLoH9CBWFoYVWnSb2dtNtJ6j7TlZWr6pvU X74AmfYLz8wZSSn+NewZ95ozBlFDy+lqsm+2VwdkzXbn9KQcJfoc3WkptUs4Conc 7jTe0p4rSdkCosOCLJLDaScUevFh/19xpI7tRuit3z/zTM8Gw9X0o/QyIs8wliCQ gfO9M0xgPSO+aBrKjNgVYUTqsjUxjjJewv8UmOoAmcZmx2utRusmu9VyG5D63iqG NDv4KxnS9wZoiklDp8ZW1jU/uvgwiw8SKg9z9CVFo+7+MgnKxlOCQRK0yBeN0bs+ KF6YUSmknCBQHvFlBjg= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyZ/2EzcNJDTbBza/BDkB EI2bTsBB0kwYw7qg/Js7to71Lq+vKCas7ztuR9wA4JWoiSwaK7UwvALt7Y3URud6 utZwMTWeH8M8RdexIaLB5wNmp158mVPxBSgOjX/KpsiRrGRiGrjlF09kfdfEAb+6 IPWrkFLVhBb3OhK4Rb06ctJacttvcXvc4ZUxMJ2kuYpzIgC6XV3PFFwJgMhcKWPF PjdF/4x0qizRhFlLuuuV2Xp6ItufRojZc3C7uTmiqpNRq6c7BAjiELab8hjDTqdK fAIPMZAkFKqEQxRuHrXgN78oYlPiBz8+mIXi89li+ZpSRweWtsCMMNFVDGYT2h3P QWYmS7h2lfEzwj5bw8Q5a5bvOsPZXq52dvsMQZBnBHzXjodOBtLcx2tsU9S6pZXU 0lXe48GitX4YrtQXE9y8clAGXmoz45l0HX9SJkK5TB6GFgxDPmVT6O1QM25FsuDt 3jCc1rM8uSE1g0Ac54MnDFn1UXBFCGPQpHLgoRZB43lmgqsf1kdijf8sDCXW5GKS xrPwfxo2vqGSplORG/DVU3gxYZwn4Qm1zadHcEh7o/CaUSSeR3qb7mr0Jk+iOV8U CoVoHpOR7aOKWWLL5XPHU8cIPx2VLbeOyLPJr8z0su/LTIWRVRLpp1AaDKDVlLwG qJgkcKO8b9oUy7BFNzuRmRkCAwEAAQ== -----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 335412997736251876444142354408224336949513 . . . . . . . . [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 2019-03-10 02:40:01 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-08 02:40:01 +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 822557617382715635055227618033397048256522078245319727869544090980263046367746355899281937703135382325839054238635966648210288980522214902731495380704889428918604001417512638093569955740332214762842860741415735482413656066878705838844915686473818895757507002073749939847980160075659406026153814740652097268052299832043824285737240425614791485652817662911438967285813621157861746930455319877950982978191642680704596966034739267026799695862905021018638243560314526918429850409149653615156045481472624912771042895950215194075635543891595394378045812219664605091155017571543317587828012067934833692343106534886863301612702786753591528847802882786352531356656477117791439152294798099891448065188824071584631558151419388710133438902430647466708602888275775145944382500999535354795429404269769452731220567080397855115582012223767471251201728027331410800340074117594716284029682825528213079218489083516073212752043629143100429318562254100732560825738450898354275856923568300158689916332089915952929753672953007444252281647541865060043824827541799341841898641894243030111747068989900069280797224683388947072561302033523079157775535687460931257102698033948522262948930622381642741891272759333172491632250529865978435680547932811531849068288281 . . . . . . . . . . . . . . . . . . . . [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) 0d6a25f421847409e7425529ee5350a061a358cf . . . . . . . . . . . . . . . . [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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016965af9aba00000403004830460221008dba3acd311d19cb66179754ca2ff3d469942485d1fbbb14a41209136c43823b02210093875f85620c375d7ad033b3804170382f627ec0fa59976dfe9f113b88c260f600770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016965af9b110000040300483046022100d570e1bea0b2e3c697131371b5825a5fc963f2bb09b9e241edaac366f950b940022100ed4ae727058fad2069ebfe9660a694d04a07c2619608314f35a0a46dbc5e8fc0 . . . . [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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