yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:33:05:51:97:39:e1:42:9a:94:0a:a8:b3:b3:b2:e6:a0:01 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): 03:33:05:51:97:39:e1:42:9a:94:0a:a8:b3:b3:b2:e6:a0:01Serial Number (int): 278698328291502637537910756503133014630401
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: d0:49:25:aa:72:d1:03:a7:a8:80:cc:e9:c2:b4:61:e9:84:67:bf:b2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): ca:87:33:26:00:55:55:0d:ae:16:83:8e:df:8b:60:88:db:0b:d8:08
Fingerprint (sha256): 3c:45:d6:3b:e1:12:93:6b:29:58:6b:c8:d9:1d:ac:2e:de:ea:4b:e1:f0:26:7d:44:01:60:50:9f:09:24:4d:c3
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
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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----- MIIGZzCCBU+gAwIBAgISAzMFUZc54UKalAqos7Oy5qABMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMzEwMjU4MTdaFw0x OTA1MDEwMjU4MTdaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAr+TZ7Q4laz6yEkXoqu5mYnur8qq82UTV qvaDh2MNaaDm+KhmoDiJuINAsNgBKoWD83tmUCKRC2zS0Z67z3WBRfJB4lLDReS/ CbvL7wwB+QRmkspMVd6hkBgG39PGMZCdVcCQXBPssV5MocZr9oev3/ttuHGJu7Ob 7IxxLm5GbUxY51dFsGHV1x3Cd1gaJmmxXKo79AErd/IkiKfD6OTl6Tc3uFSH+qaX t8KyJOOkky0zdqstwERW1+dJ05jAMXxWZFt9BO302A3MunFzN4B6bmO7CMfZOg58 oOc155Lc0YI+0rM7+WpK1CAO6xIEjbgj/wrBP5GXArzoaCz5TRqqOYvODa1sCcl8 MsdVJh8P+7a6P/CjJ6D23eAwqKCiIvPakFU1FHeTUSU+VFau8pcT8+NgodZpLcec 7O/IpKRhWVV2K6mOLfhT9I5I60pT1K05xFJK6mMvatmhlsPA5VwY2NuvFkOIzsqt XSZTcLKIFYemPZpveXbP1NPewUf+8z60uqL6dH7i8gZAci3sXA6aLpvWp3G7/uR6 bku/A5+z0zEz+MfTFcWNfF+hohrJAwAxBHjtnZg+twKFPrV673Yf2X8Rn9yqifZi 9pFqXmjsewzTH9YzvRmDfDU/6uIskcnlpljyrN9HthdeBgg0sHu9D1zK5MROXjHj 1G6PLF6BAs0CAwEAAaOCAnYwggJyMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU0Ekl qnLRA6eogMzpwrRh6YRnv7IwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFoog6u2QAABAMARzBFAiBEe3xLe539aqJJxFh09l3h1bhd 8Mtstt4sPaganjQJqAIhAI1fdXM6s9BzGCEfalAtuCVfNhXg09PEPrPhalUMwrxq AHUAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFoog6wzgAABAMA RjBEAiAXphUmfd/XpJMhJHgfpeOgYFvEE3VQlm6/P5HaxtzYQAIgFN/ytk7XaTXp gzqs1nHzh7VNgWIomY7llttsrKz+tfkwDQYJKoZIhvcNAQELBQADggEBACwTziz3 BysaCA+b6YQ4Kzm5QJWhA+RKPaiN/S+1lPopWyacUXTykkVULCnlTSrAV5IR17PT apATDK8MbfjMZH7xKulK4Eb9h3c8spGtTEOLk9GT4B5w2Vqy1RtGrs8pn/s/K6WE RZooY5PK1UwPm2kuo40JttJUhqHP5NVRLayAQ44v8I6bfj2xkbRGGlxOMimJ6IIj V+0xhyhmuhbaMSCPZ5m2SBFG8gQGMO7ju9CKc1vyYj1EK88kDGq7+KRE0DaU1Ddh 0vF61+TcNtDGqXzMMv8+O0oc/+mAoL6EMKP6jKqonNsb1qbgNVDXy+VREzDuQ1X8 xRKT+d+uYZx9b60= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAr+TZ7Q4laz6yEkXoqu5m Ynur8qq82UTVqvaDh2MNaaDm+KhmoDiJuINAsNgBKoWD83tmUCKRC2zS0Z67z3WB RfJB4lLDReS/CbvL7wwB+QRmkspMVd6hkBgG39PGMZCdVcCQXBPssV5MocZr9oev 3/ttuHGJu7Ob7IxxLm5GbUxY51dFsGHV1x3Cd1gaJmmxXKo79AErd/IkiKfD6OTl 6Tc3uFSH+qaXt8KyJOOkky0zdqstwERW1+dJ05jAMXxWZFt9BO302A3MunFzN4B6 bmO7CMfZOg58oOc155Lc0YI+0rM7+WpK1CAO6xIEjbgj/wrBP5GXArzoaCz5TRqq OYvODa1sCcl8MsdVJh8P+7a6P/CjJ6D23eAwqKCiIvPakFU1FHeTUSU+VFau8pcT 8+NgodZpLcec7O/IpKRhWVV2K6mOLfhT9I5I60pT1K05xFJK6mMvatmhlsPA5VwY 2NuvFkOIzsqtXSZTcLKIFYemPZpveXbP1NPewUf+8z60uqL6dH7i8gZAci3sXA6a LpvWp3G7/uR6bku/A5+z0zEz+MfTFcWNfF+hohrJAwAxBHjtnZg+twKFPrV673Yf 2X8Rn9yqifZi9pFqXmjsewzTH9YzvRmDfDU/6uIskcnlpljyrN9HthdeBgg0sHu9 D1zK5MROXjHj1G6PLF6BAs0CAwEAAQ== -----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 278698328291502637537910756503133014630401 . . . . . . . . [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 2019-01-31 02:58:17 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-01 02:58:17 +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 717584710888256550325362658105302455857994976350369294732008551284577857556391182539381717267039829418000956062515506374879458633159467937776788959456810282073605191668805931331227996044510712923411108417470991485227343632903668854510066753221603803799801043082995287247052368310533685405112459772523261898144401821941446984923391450278432599800911288183951106290676946147437564815322556826151441729927657208268772962734131271899235094941649776805104206896706135151072895478479614694917312257109615413269090601796004273663803592740739148174184902887955535207360169368875959568680434210381291718184085451701581146222067823004207153488695935581464280317869704859764287040400639321670511235026827436690734639827535706931841672222783740934332554446276231665324293375935167927836139536784721710740350576824439202935253452678770961003442721726504176229291745254958705611271339800815567160803600944015964281717142506082448626997093953573312271162668727574493097037698434633932602133156120191291725715433278398514895956194601606239242719135041957907970953293299426080930753622496360372004979942460440317703818981603774512278387659491755932644923999974466230765754854115113179841726833034000366905073537400552232511773206147208436987103085261 . . . . . . . . . . . . . . . . . . . . [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) d04925aa72d103a7a880cce9c2b461e98467bfb2 . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000168a20eaed900000403004730450220447b7c4b7b9dfd6aa249c45874f65de1d5b85df0cb6cb6de2c3da81a9e3409a80221008d5f75733ab3d07318211f6a502db8255f3615e0d3d3c43eb3e16a550cc2bc6a007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000168a20eb0ce0000040300463044022017a615267ddfd7a4932124781fa5e3a0605bc4137550966ebf3f91dac6dcd840022014dff2b64ed76935e9833aacd671f387b54d816228998ee596db6cacacfeb5f9 . . . . [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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