yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:5f:80:f1:6c:9c:db:b9:fe:2f:2c:8a:e4:87:3c:ae:d2:15 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): 03:5f:80:f1:6c:9c:db:b9:fe:2f:2c:8a:e4:87:3c:ae:d2:15Serial Number (int): 293835077382701102709466888343599413383701
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 62:d6:a1:05:70:e7:7e:9b:46:6f:26:2a:66:4c:8a:19:19:a3:05:fa
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 61:d9:e3:81:fd:c4:bd:7e:34:3d:3d:59:df:21:25:c1:5a:21:ae:5a
Fingerprint (sha256): 2d:5d:c1:4f:83:99:f4:50:76:6a:13:b1:71:2d:88:ce:fd:7a:72:11:e8:93:71:2b:49:0f:c4:f8:8b:42:46:1c
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
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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----- MIIGajCCBVKgAwIBAgISA1+A8Wyc27n+LyyK5Ic8rtIVMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MzAwMTM5MzBaFw0x OTExMjgwMTM5MzBaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAw3qeUjzxQbQO1i+ZRtd5snGN2YQLj5b8 9tFQN9bk2/LBi/KfY5IrttQrMsMoIsKPJQkiI5LctwpRTpai5/Kv6zBm9G43D1Gd iTJ30/OyhJOjKGRxY7VWxhQXmh06UiHS2ib8wRm9um2y8rtyvtDZAlsM6V6+cG3F LK77rrL5NLV/+YwmbLjn8Z6Q6xJPyHeLEC3oRIbBfXSVJRmlvVthTT/dux3yrMeS l/ncBwQ8P5IWkIi15xhjkHYuYru1DcHzvxt729rQpiTi3CRUy22qAKcNbH1G9/qe 0+6bCEdQj2XpyDYppuzRbQC1fvT6c8brtANkJyqeHd7NcFiNr7ul/OcQYB2kGHG7 ncjsbOu3LEWF/maaxbeJ9qYfIoSm2mEjI61Maeog3J3E3PrtTR3HAi12zOJT6rwX tauq9yBLUbOFF2oh3aeZgwAhD0zi7eqoEDuyyPZZTIvqmnG1Mvy8mSRWTUw97oZA MdpAEIrs9ajqIbpYt0mG+r9uDZlk1KVkyhauNiGGfEP43BgUDMu8eFUgpBgV05Mz h6Kx4zgRmVqwJflxlShMUifmO2jd5tTZWTuNABMRYRkwP/pKxQn+aVo4VNeIXC8W yvg2D2LYDkemODCaa17XWJz4VS0hcYbhC34hswcWTj3f65B9kQk7qhO+L3WQ9nfT ch8OnwG1lBkCAwEAAaOCAnkwggJ1MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUYtah BXDnfptGbyYqZkyKGRmjBfowHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFs4GRimQAABAMASDBGAiEAoo7NVzZ4l9dq2d5P846gBq85 sUJsn6K1YuNpwTEy/qsCIQCqD0i/CS/VpeO1rraeFmBP7B+4siMxTdfVyBCRJ/Id uQB3ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABbOBkZH4AAAQD AEgwRgIhAL5X60LXPB/C7IsMvBwU6amTa3ksw17yBgjXsJkSg+uEAiEAtYLAsZhq yudww2rcyMtpmz+mCOH8fQo/ZUKI+XmB5zwwDQYJKoZIhvcNAQELBQADggEBACoJ dLNezLC3DYX/jnRiTBZRZqszZmINtip3sLeDnXwOvfi4v8P5VGDwmAdo36sqSwdl 0G8Fi89+F66O4VZDmcavMzgB97Q4IjPwe4OWiEDLlRHxFJt4OBJ17fCISqFBqwX+ cOTN/18TmmlGLa6DKW24syPQkTt+yT00tqg1JK8Q2iNP9bV+3/RjGAsRSFIDHOd+ XQ3QVr/YSWmzsQp258NIPtxmQHDMyO1pT7RVOqrJvPoklktkiFsfPgb3Fv2e1qYZ 9UH+3QjFycvHsjeBy+JDpalKnzqfuMlrr/19Uc6r1kltGN8lwv8SuvlzQ5980KBR nUy6zl1CLIoFOvyHZe0= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAw3qeUjzxQbQO1i+ZRtd5 snGN2YQLj5b89tFQN9bk2/LBi/KfY5IrttQrMsMoIsKPJQkiI5LctwpRTpai5/Kv 6zBm9G43D1GdiTJ30/OyhJOjKGRxY7VWxhQXmh06UiHS2ib8wRm9um2y8rtyvtDZ AlsM6V6+cG3FLK77rrL5NLV/+YwmbLjn8Z6Q6xJPyHeLEC3oRIbBfXSVJRmlvVth TT/dux3yrMeSl/ncBwQ8P5IWkIi15xhjkHYuYru1DcHzvxt729rQpiTi3CRUy22q AKcNbH1G9/qe0+6bCEdQj2XpyDYppuzRbQC1fvT6c8brtANkJyqeHd7NcFiNr7ul /OcQYB2kGHG7ncjsbOu3LEWF/maaxbeJ9qYfIoSm2mEjI61Maeog3J3E3PrtTR3H Ai12zOJT6rwXtauq9yBLUbOFF2oh3aeZgwAhD0zi7eqoEDuyyPZZTIvqmnG1Mvy8 mSRWTUw97oZAMdpAEIrs9ajqIbpYt0mG+r9uDZlk1KVkyhauNiGGfEP43BgUDMu8 eFUgpBgV05Mzh6Kx4zgRmVqwJflxlShMUifmO2jd5tTZWTuNABMRYRkwP/pKxQn+ aVo4VNeIXC8Wyvg2D2LYDkemODCaa17XWJz4VS0hcYbhC34hswcWTj3f65B9kQk7 qhO+L3WQ9nfTch8OnwG1lBkCAwEAAQ== -----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 293835077382701102709466888343599413383701 . . . . . . . . [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 2019-08-30 01:39:30 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-28 01:39:30 +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 797484654205236915684657057781144273526458220424867380430589370910460154650294808730611929224507865112524516959166323953535430981871602478608584045710184891410251255742791152556235742679682227348199100606982671496887720668875068125704944444303836973725062310232689563411611933040003722022260665151545814935364022186994454279700112044176398989937929569906507514596586061384504308482869478674094464780669930950643372116951877242946959245773649602439759697434926040819734288276610902029016205166864340395844099979230812103036667234619736830669050004162079465585428248465509053469417673055943134941525387727822964655564953389024008201496078090094110462006030160343452243881532982976209837565912706001365119896582317492704045199425590175433362695823452711327801143905223244209876827032620781554536581609529256656640144406280061984952293567817730244065289233793131399489949075944581305998851776717555003560949876961544716285706736901053590187819927290249592222373671764313427180084870218114550324440507292190542948051080762932616410155583993852527044409633866183414954849524054029147396631427390609285552287814514105495605823320957516380531979584687652307739796587601392290394371019598784063404090908390361463931806483209488363293446083609 . . . . . . . . . . . . . . . . . . . . [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) 62d6a10570e77e9b466f262a664c8a1919a305fa . . . . . . . . . . . . . . . . [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) 00f2007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016ce06462990000040300483046022100a28ecd57367897d76ad9de4ff38ea006af39b1426c9fa2b562e369c13132feab022100aa0f48bf092fd5a5e3b5aeb69e16604fec1fb8b223314dd7d5c8109127f21db9007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016ce064647e0000040300483046022100be57eb42d73c1fc2ec8b0cbc1c14e9a9936b792cc35ef20608d7b0991283eb84022100b582c0b1986acae770c36adcc8cb699b3fa608e1fc7d0a3f654288f97981e73c . . . . [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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