yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:b9:6d:5f:fa:d3:e4:f0:e8:e1:07:10:03:6a:c1:7c:93:85 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:b9:6d:5f:fa:d3:e4:f0:e8:e1:07:10:03:6a:c1:7c:93:85Serial Number (int): 324434479882786869346970632007775992714117
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: bd:c6:5a:17:a4:6f:fa:4c:12:f7:6d:d7:67:e8:5b:51:cd:fb:c0:14
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 15:be:ff:7d:b7:5f:84:8a:6d:3e:35:6c:45:db:89:fd:53:73:26:28
Fingerprint (sha256): 08:29:54:fb:60:8b:07:35:45:76:48:52:82:56:a1:07:fb:ac:a2:da:47:7f:50:80:85:7d:f3:f8:ee:a5:fe:8a
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
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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----- MIIGaTCCBVGgAwIBAgISA7ltX/rT5PDo4QcQA2rBfJOFMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMDMwMjQ4NTNaFw0x OTA0MDMwMjQ4NTNaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnvfIertuYQ3J0Ru7+Pcaj+fZIGel9UUz d2KpGsOPWGT5f96rKlGobN/C7Kn6n5mgV1OBg7peg94OD6xxJztAgOqu29twyxeM 6pf8Ittv13u+/SPShwKWQcB4Sb6S/pPSIisQkE7sJZ62HEwZBqVt69jU2RfOFHVJ xAZO+F4n6ITRca7vHfy5RNnNANUmF1pHs4w4dUSRE+cAr0Ky18brH0RylPz2uixZ pgFzkt/4BG1y64iluXQ6oO4esb3OMOjqqLUsLenNIeDP8uuWixbxU+ASD21CDsAM 5HnmtgyvMxguIUbDmuacwKdxJfh+vSKA/jsCe9J5wHi3ei895FPkef9IIFRJsHGG a6AUeWNNzfXIId8EhrkxdpUbJJjv1NKnKZgl3wbxNTZEM1ZkDP3u0Tv3YxaxjWtn 2W1ScGM7AAhPtnPnesY5AwfU7m1CauW2ONRUwwZD6TaZ4ZfJL30+Umy83/Ju2QIv XEikLdsw/STsQ/LAyK4WYZeDb5AOrNeetTbB4I39kQtzI506UFEoSio/NXVVIILx 95nkfmiNgcRheOwc0vbU9wiQHTEvlMMgpLpd5KmMURhxj+eMGf2Xa2TRl/P6pbj9 kEn8w1m700nei0E3u5VAtj78EGUY6SfIP8lSM4ucT7qaH0NeVI3VZyTolpUhEbZF /0ZhKTxZrKECAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUvcZa F6Rv+kwS923XZ+hbUc37wBQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFoEdQCbQAABAMASDBGAiEAhQ5Gog8/g7v/Yxi9dOjfsAii tenHBVdzoTZvlRkevd4CIQCsGIGn7uWKY82Is/xHFbvqNYcSaaiQYP6YfqUGdaIB EgB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABaBHUAn0AAAQD AEcwRQIhAOiLB56sVDuVkpFlU+jf82RD+Z0k6M7Bnq0W71UkRhqsAiBtEhqTqxzq iBCKdaFGZaJ5FT8fhWjz832IWT4dtk14rTANBgkqhkiG9w0BAQsFAAOCAQEACrNw ndDRRCnAiP8flgLu/9hQEx3d04tLMjzygN1TXyaV4G0mywpnM+gyjQcRnhKUzCLj J9F5xm/A0b8eXQcPC61jlrT0H4qGYo2MWRvogT25opLhHIe/aDexiLKjrOf8h+P/ WeYcRH3v1ODtXUXCWWUe1A1GDAzMlDpXjCqkGzxwex2wyz6cXMt531mr1LY78TRb cczYIpa3pyVQF7pOHq+tapy6I0GuTy84HiJajIfTkcRvZmkXgwDXC3YkP1spdOFN iikGndOrBo7VP2itdhP1MEjJnC7dsU/EUxUKE131BhN6jzKsR4JtykKKQ0BwnMUz GHJUlFjZUD8BVwf9UQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnvfIertuYQ3J0Ru7+Pca j+fZIGel9UUzd2KpGsOPWGT5f96rKlGobN/C7Kn6n5mgV1OBg7peg94OD6xxJztA gOqu29twyxeM6pf8Ittv13u+/SPShwKWQcB4Sb6S/pPSIisQkE7sJZ62HEwZBqVt 69jU2RfOFHVJxAZO+F4n6ITRca7vHfy5RNnNANUmF1pHs4w4dUSRE+cAr0Ky18br H0RylPz2uixZpgFzkt/4BG1y64iluXQ6oO4esb3OMOjqqLUsLenNIeDP8uuWixbx U+ASD21CDsAM5HnmtgyvMxguIUbDmuacwKdxJfh+vSKA/jsCe9J5wHi3ei895FPk ef9IIFRJsHGGa6AUeWNNzfXIId8EhrkxdpUbJJjv1NKnKZgl3wbxNTZEM1ZkDP3u 0Tv3YxaxjWtn2W1ScGM7AAhPtnPnesY5AwfU7m1CauW2ONRUwwZD6TaZ4ZfJL30+ Umy83/Ju2QIvXEikLdsw/STsQ/LAyK4WYZeDb5AOrNeetTbB4I39kQtzI506UFEo Sio/NXVVIILx95nkfmiNgcRheOwc0vbU9wiQHTEvlMMgpLpd5KmMURhxj+eMGf2X a2TRl/P6pbj9kEn8w1m700nei0E3u5VAtj78EGUY6SfIP8lSM4ucT7qaH0NeVI3V ZyTolpUhEbZF/0ZhKTxZrKECAwEAAQ== -----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 324434479882786869346970632007775992714117 . . . . . . . . [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 2019-01-03 02:48:53 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-03 02:48:53 +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 648532461758344909046126443140355771176650486625783098415904904161498888273307891245066920538628999701885595837888234474030287892329146799063662948528025359820887962085837931706497413638923593983391304808194863955392731647192483216059803735023348486945504849344305526839319814930389183474333061830309535647403786444543984889245397451036489905329990947414782723061388408917927339589989313542284107585085034416798263359205237822249010816912582104777624945549138346675045645871118721339203568483641111481043691824056564773631970448050146824637419797167833147027121498631298899798311504614697949312072228503661415755848805958149515647437493446716697756967919260075046712656108824360390844019386193933828639619797483144263049250009463691314278595693415017782272721130496326424657735392936032776874060674076892680446040576763483426990269899218777381531625208466111358765898853696659542764754698952132188331853989120197134795117416652279449091782279707222965048467125421609883561898616824281921999764389128825567880838927280653124372350829979244729070656663736474405049680599509960944097556119412412937823558333459274051476080485550876435435947383272951649342702498535901279855880900385962118929151171461096221442526113845872372453398391969 . . . . . . . . . . . . . . . . . . . . [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) bdc65a17a46ffa4c12f76dd767e85b51cdfbc014 . . . . . . . . . . . . . . . . [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) 00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016811d4026d0000040300483046022100850e46a20f3f83bbff6318bd74e8dfb008a2b5e9c7055773a1366f95191ebdde022100ac1881a7eee58a63cd88b3fc4715bbea35871269a89060fe987ea50675a20112007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016811d4027d0000040300473045022100e88b079eac543b9592916553e8dff36443f99d24e8cec19ead16ef5524461aac02206d121a93ab1cea88108a75a14665a279153f1f8568f3f37d88593e1db64d78ad . . . . [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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