yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:1a:93:7c:50:45:50:44:d7:bc:50:57:87:1f:18:18:1d:8b 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): 03:1a:93:7c:50:45:50:44:d7:bc:50:57:87:1f:18:18:1d:8bSerial Number (int): 270380241323500334474004121277491234479499
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 3d:07:9f:b6:b7:12:79:1e:7a:52:a0:aa:f0:34:20:e3:22:a3:17:24
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b3:53:1f:a3:4c:a5:50:a1:6c:a3:7b:64:d1:55:e0:bc:48:0d:2d:1e
Fingerprint (sha256): 28:1c:56:9c:5f:45:ab:9e:54:9a:ea:85:a2:1e:25:99:e3:f8:8a:d9:c3:b1:f5:d3:06:7c:fc:ce:2d:0b:7c:36
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
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----- MIIGaTCCBVGgAwIBAgISAxqTfFBFUETXvFBXhx8YGB2LMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAyMjEwMjM2NDBaFw0x OTA1MjIwMjM2NDBaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2KU6jifCWkFC4Y4fvbOGTuSnoKmsgaUR VORrslNwfoVmL8VvcxahFxBlwYgopp8u6tD3YGsGattcaJijfWX9LksBM7u/CGFs hvSp8X50SOrCMCrzP66QnPx30XBU4DAk5BhLHvB06IGhOz0C8IxOt1lOURu46tTy DUgyMShI0Sd7DrB/3CcuUtSdqyhwoKNiMsnl0kZXV0NoIAIXnKSug02d0h54V4MS Ic4/9ZFRlKTuNzKKpLOycxTs0XeVrNUiZ6BcgElbKo87Gn3ZeLoRPtrrb3CICF5A qodmHaz1lyJafaeOJnOX3nfrIvRVgRplI3vhLtT6VF6SL6Cl8yVfMPAY60+SUBq5 H7fuDLW17nt1ihTAMu4vpo6Fluvr/+9KoD4hqWI1NJxp4B+SUuRgv9Fe/S/iv3zK xpVuCaIIBHFEnAMj2GkjD82mKhc9ZVtyGiR7+KQxcEoDULE6qtSsUILHi+70GMMg n/o9w3+HCjnCN6fT+gHT0c+p3nldttsaS1GK6GGrR5DUogYUVWTlrfJY0STVRBhJ 2Ow5HjaNqkZxnG6AlEjsdB8B9b2IHr+3qsQ+0cy5jCJhICM9nDGpF1LHFLnTz19Y FjEdCDEN0cKstJmTtTfPfzlVx8ryT7q3UutZp94H6waAL8KgSp16IiiB58kkI3wJ XyER9ce1qp0CAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUPQef trcSeR56UqCq8DQg4yKjFyQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFpDiBuyAAABAMARzBFAiBW12vzYPzXW3E71+hgFqReT5MB Auh0rFk13jX9EbzCuQIhAJOtBG+yFBTKv/QeLy50/AJBwpmpsSJ6LlMf0B1cpBXU AHcAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL2I0AAAFpDiBvIAAABAMA SDBGAiEAiL4gfsD4xq60HunqODkJaMxsLX2Jndyz7IHHBGWlwfsCIQDax9mmHk9u xDgYnZmD1BctWClPNwiLiXDMldkHT3qOeDANBgkqhkiG9w0BAQsFAAOCAQEAmmYM DX3R0GZ1gB9bNe9Shvg49D+/1sWVuLrUnYuH8EpusJXAlCOKAwP13k3pCoNWZxRq iQQcaQ4r9ulNwgn5fpkpCAdGW29LaEfVMEn5NQz1SWh6gwzrwr53X/h8GjQMMQrR wqNjcH3YvAu8b/p059zB+aSMgVEPQYO8SFnEYkcLlww4QmL0S1+Wr+KLOcX0xCzL mqmkCZ3i6k66PTnyMosL15HOdHseejHRw/clCOP2LGL1TweYunLbYxTa7WR4p15v zChkf+tLwrL2srmRrocA05hsKi34wlZHD4C4BfGK4WOOc+ACnaagjDtEp4dop7Q2 VCFzCRT7npluqknPEA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2KU6jifCWkFC4Y4fvbOG TuSnoKmsgaURVORrslNwfoVmL8VvcxahFxBlwYgopp8u6tD3YGsGattcaJijfWX9 LksBM7u/CGFshvSp8X50SOrCMCrzP66QnPx30XBU4DAk5BhLHvB06IGhOz0C8IxO t1lOURu46tTyDUgyMShI0Sd7DrB/3CcuUtSdqyhwoKNiMsnl0kZXV0NoIAIXnKSu g02d0h54V4MSIc4/9ZFRlKTuNzKKpLOycxTs0XeVrNUiZ6BcgElbKo87Gn3ZeLoR Ptrrb3CICF5AqodmHaz1lyJafaeOJnOX3nfrIvRVgRplI3vhLtT6VF6SL6Cl8yVf MPAY60+SUBq5H7fuDLW17nt1ihTAMu4vpo6Fluvr/+9KoD4hqWI1NJxp4B+SUuRg v9Fe/S/iv3zKxpVuCaIIBHFEnAMj2GkjD82mKhc9ZVtyGiR7+KQxcEoDULE6qtSs UILHi+70GMMgn/o9w3+HCjnCN6fT+gHT0c+p3nldttsaS1GK6GGrR5DUogYUVWTl rfJY0STVRBhJ2Ow5HjaNqkZxnG6AlEjsdB8B9b2IHr+3qsQ+0cy5jCJhICM9nDGp F1LHFLnTz19YFjEdCDEN0cKstJmTtTfPfzlVx8ryT7q3UutZp94H6waAL8KgSp16 IiiB58kkI3wJXyER9ce1qp0CAwEAAQ== -----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 270380241323500334474004121277491234479499 . . . . . . . . [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 2019-02-21 02:36:40 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-22 02:36:40 +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 883836221875204344280553955076463300692494724686129381414144753757251708545116157394837858805017322938090103407735173595691397158917457420058444566279288593816382035256003100814423772189644536049850388579553665400000153460772264445650931839626816378932896282527591467530078354222482719736668851788991308362419835041001173373800062485215797081604462553730396106333583277109134813432597237806638396823300406129819264487122127717281715951336885741619452694982215877976929171535935500738969906647474454647374816757247833962191941126977611689964323362427941768232504736873760059839391866844188333038074938739947233872899896380537934264575492333301346263449041449711894793786713934693453758986997308829187943257340006006788574465319365488024806940113302958554369930911608297585890666757224252273282389101562825928143064258259928577254145730070801319119317279216581775458197932598445778554909200056616933702729549893206294853015992227291081813421074848567284419637633054170145840125484247999441102655291285142430303596794759339461043984323571857724521515693525409586134695338819602700185115890159753967812701897434428560635358792677723588890005577011621938723102543177682100366644699851357441309922399831763424873128938296126245370477259421 . . . . . . . . . . . . . . . . . . . . [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) 3d079fb6b712791e7a52a0aaf03420e322a31724 . . . . . . . . . . . . . . . . [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) 00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001690e206ec80000040300473045022056d76bf360fcd75b713bd7e86016a45e4f930102e874ac5935de35fd11bcc2b902210093ad046fb21414cabff41e2f2e74fc0241c299a9b1227a2e531fd01d5ca415d400770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001690e206f20000004030048304602210088be207ec0f8c6aeb41ee9ea38390968cc6c2d7d899ddcb3ec81c70465a5c1fb022100dac7d9a61e4f6ec438189d9983d4172d58294f37088b8970cc95d9074f7a8e78 . . . . [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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