yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:99:80:28:2a:a7:f8:01:d4:d2:93:ea:3e:fb:b4:5d:69:92 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): 03:99:80:28:2a:a7:f8:01:d4:d2:93:ea:3e:fb:b4:5d:69:92Serial Number (int): 313570409674688196464244826368369590364562
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 78:13:c1:98:b6:69:89:4d:6e:df:c9:68:da:40:3f:e2:4e:7d:df:a6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 47:29:2d:71:28:fe:54:30:0c:39:e0:f6:9c:0e:f5:15:ca:09:66:1e
Fingerprint (sha256): 47:97:df:d0:94:ff:1e:20:fd:18:2c:77:3d:0a:a5:94:f3:b1:54:26:e0:72:0e:10:cf:9f:29:ca:b9:cb:10:7b
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----- MIIGajCCBVKgAwIBAgISA5mAKCqn+AHU0pPqPvu0XWmSMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODEyMTcwMjQ5MDNaFw0x OTAzMTcwMjQ5MDNaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2GV3YvSskz4IQJxcGeHQQnzuakpnuDtQ QZxLjGeCpug+i5VTWhQzEmlmLpOvsl8YPiQyc3WjXCgQgJv2kJv3PYSKADa/jH9N 8cDDPQ72HQ652AbJ6ghX+wYziuKW8h5jFC2MRoAuv2wtxYOm2palDFS/LnupXjcy nu/xbxnWW2+gbKQsF6/Q4XX65pDdoXwGcwtw70ge2lUwrzDxSmk36JDOYQVV/XdV RVXDfCbXL/S7cIuDp9f9dg75yf3g4u6XHRiBIh5Y/fpsbko+6oogYD7LxCjuMmNg 5y0iUnZnyp0NROcE9yd7RCotiYq1BJSlJYDLgEw//YQEb4v5eyCbbLFNKnomw9OU 3M/1JYWsUS4S/qx5+bomTwIIogDPOse7xOrXG9fOZziMh0N/zp6mstrZwOPuigZ0 8tZMqJ2YMJRkJRNylWD+Pxv0+jW1IAt0ijw7qmo1e73TmOv6+UHv3VYr/rm0hP2a 5hHQJx/xP/VJYV74Uh4ntS5ufSqge6EZeD8cknaGHInUDZvm1omz9+nKxGOh7ose CMYHCbVbCpN1vMwWjOkCP0rPrk7BZRWYwwLNyy88WBuMA11UrmXf47mgvKjv/ter ICoYgrtQuesIoI/rYmlQF54860dvdKwEZAHxcDpXV/cG8YE6+lRu9PkcZ5L/t4q4 hmWYi7Ca4q8CAwEAAaOCAnkwggJ1MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUeBPB mLZpiU1u38lo2kA/4k5936YwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFnukgOPwAABAMASDBGAiEA2RV0bhsplwbiqAFYrKb8NNq/ 3aXKq13kDM7NLYSKgdoCIQDnhql5FRlYnlAbrqsV08aagHKFE2lfjY4t5TvqPebm ggB3ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABZ7pIDo8AAAQD AEgwRgIhAMWJSuakxKSf/bHnevjwJezCqnnt1pxFSc4QnzFcvk9oAiEA18d6QrKP +VjvLQITCccYuvHJ69DNi6a/kXutCXCetqkwDQYJKoZIhvcNAQELBQADggEBACdA qKHtraaMzKspZA5IDzQ/JYz7dBTqE/QpMOmXhkGigi58tIThwY7mYY5B0MNgbhCn CuCXzk7cMzQfZU+N6PiijklrzreXbXnofMNIsWGCZ/AwAPxjpbIqGYF2y/PNfDd+ Vhj+lNoRdYFx5jr/LN1wO6+Fvi1SWN94Yc0XqEikPBX4Q5los1O7O63iut+9dRem bUdDU6YK6YxfdY7O/Zi6etgqIjZxn+eU9XIMm91eXrdAK1IdAOy+FfKuH8Do7TH6 H4xS6U8TUKgnzj06bbXTOOW6GXIZHBy27hYCPmRxdDU2Cx4rk/EktmycIdmx2Wsc xmpba99DTJPMXLapvkk= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2GV3YvSskz4IQJxcGeHQ QnzuakpnuDtQQZxLjGeCpug+i5VTWhQzEmlmLpOvsl8YPiQyc3WjXCgQgJv2kJv3 PYSKADa/jH9N8cDDPQ72HQ652AbJ6ghX+wYziuKW8h5jFC2MRoAuv2wtxYOm2pal DFS/LnupXjcynu/xbxnWW2+gbKQsF6/Q4XX65pDdoXwGcwtw70ge2lUwrzDxSmk3 6JDOYQVV/XdVRVXDfCbXL/S7cIuDp9f9dg75yf3g4u6XHRiBIh5Y/fpsbko+6oog YD7LxCjuMmNg5y0iUnZnyp0NROcE9yd7RCotiYq1BJSlJYDLgEw//YQEb4v5eyCb bLFNKnomw9OU3M/1JYWsUS4S/qx5+bomTwIIogDPOse7xOrXG9fOZziMh0N/zp6m strZwOPuigZ08tZMqJ2YMJRkJRNylWD+Pxv0+jW1IAt0ijw7qmo1e73TmOv6+UHv 3VYr/rm0hP2a5hHQJx/xP/VJYV74Uh4ntS5ufSqge6EZeD8cknaGHInUDZvm1omz 9+nKxGOh7oseCMYHCbVbCpN1vMwWjOkCP0rPrk7BZRWYwwLNyy88WBuMA11UrmXf 47mgvKjv/terICoYgrtQuesIoI/rYmlQF54860dvdKwEZAHxcDpXV/cG8YE6+lRu 9PkcZ5L/t4q4hmWYi7Ca4q8CAwEAAQ== -----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 313570409674688196464244826368369590364562 . . . . . . . . [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 2018-12-17 02:49:03 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-17 02:49:03 +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 882820097629674033593099324452207095760663576150146883135327161495836306423740084101228519406607924290504079320662128696990070381735261199931830212714547947456266117820210781428908316056598394639234941449503764543444816873041688743795650650937631054304822899902658721560476071846313547232072922729274672312074267201158758899443227169185481597195036890677107160854102498423641318896821843233643068488055639926719385036123820871987309461304422773639742354904862565439853215210860777237560601837597516482468423774567664335375701463086521537418131502441192661016944003522728264616995506096448796488034914840093881874489241508944234817693979438401236971387721448475374725679645219629735594739258088526722898425734161139224043808454201637180901590055524237347991381532917462421669049276669573796499391830361802123222077978792764799888977332350692220096059287325478814176972412355261063115953179962962584431604601566824961886187434271645382977407177066426191366737945839216588993774859539977489908934742260180274186295398539337854615514653149121341988328160285324056791383935355463863307771062350961116192746530959259219177275785770890315576019380389494188886470502743993325916402607042009768417165949272136035160209967516237100998838641327 . . . . . . . . . . . . . . . . . . . . [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) 7813c198b669894d6edfc968da403fe24e7ddfa6 . . . . . . . . . . . . . . . . [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) 00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000167ba480e3f0000040300483046022100d915746e1b299706e2a80158aca6fc34dabfdda5caab5de40ccecd2d848a81da022100e786a9791519589e501baeab15d3c69a80728513695f8d8e2de53bea3de6e682007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000167ba480e8f0000040300483046022100c5894ae6a4c4a49ffdb1e77af8f025ecc2aa79edd69c4549ce109f315cbe4f68022100d7c77a42b28ff958ef2d021309c718baf1c9ebd0cd8ba6bf917bad09709eb6a9 . . . . [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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