yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4b:b6:6c:ec:ca:55:c3:12:f1:a6:ff:03:55:9b:03:1f:eb 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): 03:4b:b6:6c:ec:ca:55:c3:12:f1:a6:ff:03:55:9b:03:1f:ebSerial Number (int): 287100520380323998495382719026346217119723
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: d9:ab:08:d3:f3:13:86:99:d4:9a:b0:62:8d:f3:02:81:2d:c0:35:b1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 8c:0b:43:80:01:f6:5b:0b:af:b9:70:3a:78:81:0c:cb:0a:50:30:a7
Fingerprint (sha256): 01:c7:29:3c:5f:46:a2:0a:c1:15:16:3e:9b:ba:77:41:80:8a:a9:dd:a4:0a:17:ae:c7:bc:90:4c:09:a7:ee:0b
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----- MIIGaDCCBVCgAwIBAgISA0u2bOzKVcMS8ab/A1WbAx/rMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MDYwMTM3NTlaFw0x OTA4MDQwMTM3NTlaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEArCep8ejrgrwWW/CydtDghrvBdTjW7pk2 XKc+G396ybgVGyB1TQ+TL6CYjmx7E3MHzhqLPAgEoWQGinsqzdjVVTp8eEo2ecdV 2z58luxIyqt2GpsJPuCcyHkF1RnMONDeZISHbuP/M0x1T8UGOaFl5nboH6lHTzZK XzgpU0XJIFAWzuDIyWh+KRvT3gGgaYtXb8rNs57Y+QBxuP0dgbDBMYfmNHKuyfQJ Dxmd/E7S0H+1swCPsUep3DrndHY/UZZcgVsLR+2q/i4deH7PP3Db6phe8zj+ylTb lJmlHJLzACPTpc6vwmvO7BN/ZOQOzs9tZBoBt60uH+Y4RlypByaNvRvvcBcnU9A2 g60R84IkVJTvLg9mMDPdkYBBt3kuTmFXJMlOtPtynM0BrQe4T1Inp3uASEsrkiLS D2YvtGlCdknIQLzyq9+8yb2/aCr3W/AX8iVqZmJ9abPcNExnfchHdXZ0cRJFMQ1j kvaQ2BvbC6fZGrNBhF8o9mrpDdc4IaRFcVUDnawZ860JyrrqwbJLgmhk5eKKMm9E mLBSqsl4+durUn0TKUwBvk6/U0mFy6Vihs+isM5N6I45JOcVXmnLtKbenXMYbm70 QUDa8+0EPoL/39vcQi7JDtEuKFgufvjtCBCrfrCBuO3E5GxururMt9tfQQ30+ihw t8kbEgT1ZoMCAwEAAaOCAncwggJzMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU2asI 0/MThpnUmrBijfMCgS3ANbEwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFqiwFPaQAABAMARzBFAiAirNSMZ76WvsW+0bYThRxJI0ps fuh0MRqyhj5WoNcszgIhAN8LB5mfMSc0AKW+EcP7kB3UD72EFqmXwnGjRCF8yf69 AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFqiwFO0wAABAMA RzBFAiEAjvWdg6fJiJRD6INsa6xJWlLXOw+dP7OVdu4EplSotbQCICeq5gF7v85u HuR1vDM3WAi2LC6q9jlQ7fg9Nlp0IZs5MA0GCSqGSIb3DQEBCwUAA4IBAQB7beVz gxTwzwgixfvjsdejqZuleVKHI5EvvOivPw4acTszCSb+877VVDFhrhdJf5FWVBb3 7LV6sdCMFbdF9KC3PYVq8z1rzjZCUJT823NYTLJsnTN5EDEu55fuMrvM+UrKm/xI 9r9qg1x88hq4LsclsB17YaLw3rZjISQqFhMQ7LHvgKSxOb44OardCe0khrX7fzlZ GV4Ze97tTmfQ220EZTV/k/sJYTcQ9PKWgpBIrC60oX3K2IpvdIWdVca+YLcoKQKJ bm7DaHdz4PWjO6xxC4iap9YIXTa2VUTfLpj1QoiAw1V4Onjvk4WakKd2ZEhUh42y 0Xg8bQGaFWFLw7nT -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEArCep8ejrgrwWW/CydtDg hrvBdTjW7pk2XKc+G396ybgVGyB1TQ+TL6CYjmx7E3MHzhqLPAgEoWQGinsqzdjV VTp8eEo2ecdV2z58luxIyqt2GpsJPuCcyHkF1RnMONDeZISHbuP/M0x1T8UGOaFl 5nboH6lHTzZKXzgpU0XJIFAWzuDIyWh+KRvT3gGgaYtXb8rNs57Y+QBxuP0dgbDB MYfmNHKuyfQJDxmd/E7S0H+1swCPsUep3DrndHY/UZZcgVsLR+2q/i4deH7PP3Db 6phe8zj+ylTblJmlHJLzACPTpc6vwmvO7BN/ZOQOzs9tZBoBt60uH+Y4RlypByaN vRvvcBcnU9A2g60R84IkVJTvLg9mMDPdkYBBt3kuTmFXJMlOtPtynM0BrQe4T1In p3uASEsrkiLSD2YvtGlCdknIQLzyq9+8yb2/aCr3W/AX8iVqZmJ9abPcNExnfchH dXZ0cRJFMQ1jkvaQ2BvbC6fZGrNBhF8o9mrpDdc4IaRFcVUDnawZ860JyrrqwbJL gmhk5eKKMm9EmLBSqsl4+durUn0TKUwBvk6/U0mFy6Vihs+isM5N6I45JOcVXmnL tKbenXMYbm70QUDa8+0EPoL/39vcQi7JDtEuKFgufvjtCBCrfrCBuO3E5GxururM t9tfQQ30+ihwt8kbEgT1ZoMCAwEAAQ== -----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 287100520380323998495382719026346217119723 . . . . . . . . [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 2019-05-06 01:37:59 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-04 01:37:59 +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 702330867122014319208571679453293575860813031979593277560600398620371234771813373514285535138425387156789956009304065894053145377524010969983258060192216358155208799313341781870222027175519442110229740802629112533617883417456564835359692424634772423267749866645305688745296025575765559569085829620512968652147538870298600969372949636072171693134040745091064487629241794312168856754572855977146710816025246536905507104101665339325734592681531529518474772386344888554484591566662342936255207317615902912881745921173199993864009375891280564807977373825881869786779620219772437679917519975239938216016966509983684805657358783938929805203943252532918252225034866246972712527268856579141577900943918717259156491325212169553765853655411414083563041001770441254965839051596121953046703106084387706769882906722250287332684711765710068959131072759382334666095548019665706101900113812160311752024482686752901536389292867754250058060798176434169021662059781545984860270400526557122122448858891535438436467173893397823292857241516283322745698805767306416947326014897617283946247749731597846435222887488120991469981966329701391976731854065291963151701619991858012549284292007603161150820800008829643321742084540952877032077464801431458035375892099 . . . . . . . . . . . . . . . . . . . . [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) d9ab08d3f3138699d49ab0628df302812dc035b1 . . . . . . . . . . . . . . . . [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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016a8b014f690000040300473045022022acd48c67be96bec5bed1b613851c49234a6c7ee874311ab2863e56a0d72cce022100df0b07999f31273400a5be11c3fb901dd40fbd8416a997c271a344217cc9febd007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016a8b014ed300000403004730450221008ef59d83a7c9889443e8836c6bac495a52d73b0f9d3fb39576ee04a654a8b5b4022027aae6017bbfce6e1ee475bc33375808b62c2eaaf63950edf83d365a74219b39 . . . . [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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