startup.ajou.ac.kr
Issued by Let's Encrypt Authority X1
About this certificate
This digital certificate with serial number 01:a7:d7:aa:19:6b:87:09:73:32:b9:f9:0a:97:7b:16:48:60 was issued on by Let's Encrypt.
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We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=startup.ajou.ac.kr
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 01:a7:d7:aa:19:6b:87:09:73:32:b9:f9:0a:97:7b:16:48:60Serial Number (int): 144226108432696123259362813970611713755232
Serial Number lenght: 137 bits, 18 octets
SubjectKeyId: 8e:2f:81:6e:67:b8:a7:17:4e:16:3f:c6:bd:69:4d:aa:3a:52:3e:e6
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 42:01:89:46:44:35:c9:0e:2c:56:11:0c:72:bb:ea:e1:26:41:7a:09
Fingerprint (sha256): 20:e8:31:60:93:1c:3b:ac:a9:d6:f8:20:a3:af:2c:28:31:d2:5f:7d:07:f8:d2:ca:e8:1a:1b:9f:0b:c6:23:e1
Issuing Certificate URL: http://cert.int-x1.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x1.letsencrypt.org/Check the revocation status for certificate startup.ajou.ac.kr
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for startup.ajou.ac.kr
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
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
startup.ajou.ac.kr
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Certificate
The complete raw certificate details for startup.ajou.ac.kr in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGCDCCBPCgAwIBAgISAafXqhlrhwlzMrn5Cpd7FkhgMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMTAeFw0xNjAzMTUwNDI3MDBaFw0x NjA2MTMwNDI3MDBaMB0xGzAZBgNVBAMTEnN0YXJ0dXAuYWpvdS5hYy5rcjCCAiIw DQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAMV9cZ5gkxhozmVhIgJSZCN35Vsr bKAIPsArEC1C8+zqrf6Wa5FH/fSEZbSWvaXNvPTqvhaaz6EfPaVcH5hqt1CgytE1 HjSUPSYz1afM0hjS4vhsbB6tDp2869nB54662nBYj0gnOQQwfLUR6AggSgjAaLf4 DY/888takZbxizR4utznOjz7nfrZg3meZiRMd6foitQYdF0Ar+Mj5HU/FPiCnKaL hOb6r9tC1q0yMEQmO+lLHK3rhRumZ9KSSJxDI4u+ZCtiwl38qfFNC2YX7JpadJ/h /KEZRrwU9dMY4ALMRXKAEYo+pzEbMjhfcE6YFZKQQ1C0N8ESmCga3dHChE7TpDZ8 YNuTBJeqgU1lpDJrQxND4Ec0NQHGY3QHyDHNmBr8uEnqfHPwgzvDrRGEoNMA7Yw7 AzHqSBI8mPe9D2optdyoo5ZEtqNRfFCFH8hSu8kyDG0cQ2mnIRYhqDSdgUNzHrG0 W8FrexQdZ4foZL4TFvB1blstEV+1OQfJfY09ruV40Nw8cQ/b5qsovim9Akn66CPm y6GxC3PPwxkNRpVEJ2TjXj9OAnpKpKwYNiAkkCi7bFhrTYcQ1u7YU6HaR0dngcbM suFxbtGk58LQw4fGEbOHcCRlFHGAeXqZEwv4P1/V/8Eevf9Fd47mTMwUAHrcXU3D /2tEYYrpjzI7Gkc3AgMBAAGjggITMIICDzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0l BBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYE FI4vgW5nuKcXThY/xr1pTao6Uj7mMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZF Ze/zqOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3Au aW50LXgxLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0 LmludC14MS5sZXRzZW5jcnlwdC5vcmcvMB0GA1UdEQQWMBSCEnN0YXJ0dXAuYWpv dS5hYy5rcjCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEw gdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggr BgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVk IHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ug d2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0 c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQAtOHEh 8huv4VSWcWJgaI0y1kOBru7BVRNPEUSMVMTFjD9klWNv42Dwm/99X9yPTPWpS0D7 Qe3jO+DiPb1eIN3ShfQFH9+szUOjaOJioZ2ERnJTonoExKAu370i7jeRZrcVFsNA 3+1yN2qQXGit0hzPGmZ6NLHwjtr7Pqrc3LCAFSN630X+yGIPb+6yfNmL98KxTfGb WR+y8me+Ankm05Yd6M+i6ea1eeAxlMCbQi4qMGWIOaXvyuOvDtq/A/DpBzjfSE2C UGU29iXMJyQSOxHlJWUtCHRPSHRQNDwFRbfo/Y2IFEK9pwJeYhX3+rYTNIXp7hFW Lx7uRhy6ClUkg55k -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxX1xnmCTGGjOZWEiAlJk I3flWytsoAg+wCsQLULz7Oqt/pZrkUf99IRltJa9pc289Oq+FprPoR89pVwfmGq3 UKDK0TUeNJQ9JjPVp8zSGNLi+GxsHq0Onbzr2cHnjrracFiPSCc5BDB8tRHoCCBK CMBot/gNj/zzy1qRlvGLNHi63Oc6PPud+tmDeZ5mJEx3p+iK1Bh0XQCv4yPkdT8U +IKcpouE5vqv20LWrTIwRCY76UscreuFG6Zn0pJInEMji75kK2LCXfyp8U0LZhfs mlp0n+H8oRlGvBT10xjgAsxFcoARij6nMRsyOF9wTpgVkpBDULQ3wRKYKBrd0cKE TtOkNnxg25MEl6qBTWWkMmtDE0PgRzQ1AcZjdAfIMc2YGvy4Sep8c/CDO8OtEYSg 0wDtjDsDMepIEjyY970Paim13KijlkS2o1F8UIUfyFK7yTIMbRxDaachFiGoNJ2B Q3MesbRbwWt7FB1nh+hkvhMW8HVuWy0RX7U5B8l9jT2u5XjQ3DxxD9vmqyi+Kb0C SfroI+bLobELc8/DGQ1GlUQnZONeP04CekqkrBg2ICSQKLtsWGtNhxDW7thTodpH R2eBxsyy4XFu0aTnwtDDh8YRs4dwJGUUcYB5epkTC/g/X9X/wR69/0V3juZMzBQA etxdTcP/a0RhiumPMjsaRzcCAwEAAQ== -----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 144226108432696123259362813970611713755232 . . . . . . . . [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 X1' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-03-15 04:27:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-06-13 04:27:00 +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 'startup.ajou.ac.kr' . . . . . . . . [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 805688967915368201452302089416895757420501925676367167926609478697281170130905856422742211677465209367494586737871549214866819228292541330688569997833047578467517561215110377504626375393979501189334270384306967244744729366215841836662201190330137572226488569999264076274294824980130456322253101512649404590334242501978154084077263092423658996680708849209411074902267713900485950172803870629071687089702405823251230963066814955566412295220849169219782040551573822966810945330918595479342756840024631434113538854388002277688106369564026503842464831686773982738734646522257180799858690933491715858066714531898589037125030145611451642360806218992063980587352979712800953355826373302823432975881891873719737752490146139650470636078386925493568816170486646601026078994348529326065431235139237926150563102990890753727988312133248828790984651026386485611638877079903259556353755217051797326315440860724717286569445243358569078832909811592355508663631785263215793891530630972326320374190378964369408622080544029372481549661762060420940557634349438938673548092915447073700649355901423124208087900579646377796027446067004976733432615641704021686026989418652955503973667338785128221392977118470492018800784883176405133646084575579036702543071031 . . . . . . . . . . . . . . . . . . . . [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) 8e2f816e67b8a7174e163fc6bd694daa3a523ee6 . . . . . . . . . . . . . . . . [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 (100 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-x1.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-x1.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 (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'startup.ajou.ac.kr' . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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