yushikai.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:dd:99:18:4c:91:75:7e:ad:69:84:68:39:61:9d:7a:2c:ea 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:dd:99:18:4c:91:75:7e:ad:69:84:68:39:61:9d:7a:2c:eaSerial Number (int): 336742758936275413661508354552615463955690
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 8e:13:f5:b3:95:3a:29:d9:85:d4:cd:8b:14:22:0e:0c:2d:b9:00:8f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 11:68:3b:34:a5:0b:40:2f:ef:f6:b0:1a:97:54:ee:d1:05:65:4c:ed
Fingerprint (sha256): 2d:fe:3f:16:2a:62:25:cf:22:d6:e0:f6:69:cc:36:4a:25:4a:c1:a6:3b:97:4a:36:6b:6a:dc:c7:ff:ca:6e:b1
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
Certificate
The complete raw certificate details for yushikai.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGaTCCBVGgAwIBAgISA92ZGEyRdX6taYRoOWGdeizqMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MTQwMTM5NDdaFw0x OTA5MTIwMTM5NDdaMBkxFzAVBgNVBAMTDnl1c2hpa2FpLmNvLnVrMIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyWMZXdbmJ3a8raN2mR1YYL777m/c6HKd iqCm6TSTPhBsHDaACOPSgYUX2OQ2TG0uCS740FlMiJn4PGRfq17HKEGBp4glBZmO hH6Bid9QFydDpNNIO5YBz22fWgAlFxqKwEEGMJ9pXP5iQZ8NWxRkWASgeIvfCvHS eE9Wji1u3+6oPB60R6TanQ+795zXd42q3H/rjnY5daAnYYy2W48QA2A8AKI6HBS5 FcmuJaHSqH+x8DW3TUIKoJGWeQWfmqRdbGEyPYR2SSKUB0l8KmgE6kHCxwM+gtwk wm1+U0GgpTYzoGxy6w/9r2SC9lmTUZAD2P0pvH/s7+vLd6oKMQzT1Leo44AHQ8wz s3+gX4fIpuZhDmJw7BLq6Px4lEXYo6RGuMS+6XRumLyUO4KRhpYMV2UCSy9+UJXs WxlmrR0apxBI7AYTkyE2OK45JkZxPJ0RyuOJQ23Q3DuTda5lTTA6TpVRE0UDsQHa BWjpoG6aO7tVtUuztY+CkCDoZHQrA4x7eExJBRyteHdavLpaqkbbPQ3aO/3ac+gA ezdwdK3q9MNvUqpJG97/yf2+Wio+BVioPmnhyF9XZq06dSRBFUpHOyVYC+Etpi3I kBAPO1sEeE928XVT/mUA+i+QzUzdhm4AO7vI/O+NV8kbvbPhXFBOwOuKFYyPjMjO 1CV/i7aKj1sCAwEAAaOCAngwggJ0MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUjhP1 s5U6KdmF1M2LFCIODC25AI8wHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAtBgNVHREEJjAkghJ3d3cueXVzaGlrYWkuY28u dWuCDnl1c2hpa2FpLmNvLnVrMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcAdH7agzGtMxCRIZzOJU9CcMK//V5C IAjGNzV55hB7zFYAAAFrU9r1qgAABAMASDBGAiEAgXp2pwokIal10vXpnL6kAJvh SzsBbo7Im47BF9WFCVkCIQDxtIlB+yFk4k96C43TsCOjdwPuSJBXwA/2q42Iwi8V YQB2ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVFR/R4AAABa1Pa9cYAAAQD AEcwRQIhAL336LZzAP348rh9LfoijU78JXphCXLEq/LIfYmXTbwIAiBqyjoieeUQ mHul5I7X57c43ycG+f/eSqkp+09uQzfXDzANBgkqhkiG9w0BAQsFAAOCAQEAXfeY ZOY+WSWbkN4XEpY7YkJYHVEQISGmAYgWaBKMg4GFdkmeausMAUJFUO07J0q6r82X x/ouTX141h0uPZed+IimgmwDIFDvk6mXRTa3DD8n8qKLx+QhHcOax5dvukp7jpW0 m2ZL7EKDOptFnY7dV0ewsdR2LL+IRW9N6Pw6R8Olc2uXnbx+y6oADObnJ2GvUHOu c+/lGpivjYpVWO6F2HIorA4BwWlDUbydP1NAGFx5023GegQST41P3eqxwa4mQpMr CiAv28hHHKi9/Bad7zZhHAF8Uq6PoSH53Th7199q1bKm3AiY7yjPEpfAsiI+xqYY 0BCPhyF+yIw9Y5TK0g== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyWMZXdbmJ3a8raN2mR1Y YL777m/c6HKdiqCm6TSTPhBsHDaACOPSgYUX2OQ2TG0uCS740FlMiJn4PGRfq17H KEGBp4glBZmOhH6Bid9QFydDpNNIO5YBz22fWgAlFxqKwEEGMJ9pXP5iQZ8NWxRk WASgeIvfCvHSeE9Wji1u3+6oPB60R6TanQ+795zXd42q3H/rjnY5daAnYYy2W48Q A2A8AKI6HBS5FcmuJaHSqH+x8DW3TUIKoJGWeQWfmqRdbGEyPYR2SSKUB0l8KmgE 6kHCxwM+gtwkwm1+U0GgpTYzoGxy6w/9r2SC9lmTUZAD2P0pvH/s7+vLd6oKMQzT 1Leo44AHQ8wzs3+gX4fIpuZhDmJw7BLq6Px4lEXYo6RGuMS+6XRumLyUO4KRhpYM V2UCSy9+UJXsWxlmrR0apxBI7AYTkyE2OK45JkZxPJ0RyuOJQ23Q3DuTda5lTTA6 TpVRE0UDsQHaBWjpoG6aO7tVtUuztY+CkCDoZHQrA4x7eExJBRyteHdavLpaqkbb PQ3aO/3ac+gAezdwdK3q9MNvUqpJG97/yf2+Wio+BVioPmnhyF9XZq06dSRBFUpH OyVYC+Etpi3IkBAPO1sEeE928XVT/mUA+i+QzUzdhm4AO7vI/O+NV8kbvbPhXFBO wOuKFYyPjMjO1CV/i7aKj1sCAwEAAQ== -----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 336742758936275413661508354552615463955690 . . . . . . . . [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 2019-06-14 01:39:47 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-12 01:39:47 +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 821587711605721005682147936137291338795230776510285172082026421706201596343298147087847441322357457844138299326922817580619665720971795274261711152104828849677634853227606492488633382276216938325100379842276884472803337546047795387028642390498154391234888346629822827896734938703218058505701193849377180042961678272629574186479202819417448403488233382486107252651124250596387958270524446887063222895897202688295817240115765837646716624601949881474141002376500562855998712347418333588553303316515695869785831024625424976608554072171397919044697670336736665984797387125699082080773654397856926094983059544486051634601773068227404963405959279151519338731903197481433922181847080660138740818668330740103959601879436339333260566547129389812802623261842491507926525108653922217283860695786605956327616839311935756479636156416057021400313391618955283284071869086687896980738478383233303697817759793084913093212418045030887585997576243500167453996871190091113642391072818100975682667014667168637184880582567106167931374438960756221413940677638981616347303387075111879453641538664034945772127639741403726739308296393805267635673170826940823336202212369230105969417713779138868822368782832584922767913527971774781144042040933612700173244993371 . . . . . . . . . . . . . . . . . . . . [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) 8e13f5b3953a29d985d4cd8b14220e0c2db9008f . . . . . . . . . . . . . . . . [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) 00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b53daf5aa0000040300483046022100817a76a70a2421a975d2f5e99cbea4009be14b3b016e8ec89b8ec117d5850959022100f1b48941fb2164e24f7a0b8dd3b023a37703ee489057c00ff6ab8d88c22f1561007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b53daf5c60000040300473045022100bdf7e8b67300fdf8f2b87d2dfa228d4efc257a610972c4abf2c87d89974dbc0802206aca3a2279e510987ba5e48ed7e7b738df2706f9ffde4aa929fb4f6e4337d70f . . . . [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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