startup.ajou.ac.kr
Issued by Let's Encrypt Authority X1
About this certificate
This digital certificate with serial number 01:2d:3c:70:d0:e9:2f:6d:0f:e7:0e:e2:24:fe:9a:f6:da:62 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): 01:2d:3c:70:d0:e9:2f:6d:0f:e7:0e:e2:24:fe:9a:f6:da:62Serial Number (int): 102505331897413765424389128313710832966242
Serial Number lenght: 137 bits, 18 octets
SubjectKeyId: 69:4a:c6:4b:c3:66:d2:82:f1:05:18:cd:1a:f9:63:a9:e8:a2:c8:b3
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 84:77:37:2b:80:af:e7:90:84:58:b9:c2:0d:f0:c7:b9:19:35:13:1e
Fingerprint (sha256): 54:1d:7c:47:50:ad:62:eb:fe:c9:28:3e:d8:e6:57:33:32:97:92:92:4b:8e:9f:ca:83:2c:da:79:47:7e:a7:21
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----- MIIGCDCCBPCgAwIBAgISAS08cNDpL20P5w7iJP6a9tpiMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMTAeFw0xNjAzMTUwNDI4MDBaFw0x NjA2MTMwNDI4MDBaMB0xGzAZBgNVBAMTEnN0YXJ0dXAuYWpvdS5hYy5rcjCCAiIw DQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAKOVByG90PCe3kRWvz4oEqOxvh8b Iryh4GmwmnTLN7rjJQ+SGS7WcGfoq21nVjuYpV/RKJACPSnF3EY0+jbosneB0JM2 n/1d40lxOoVmFXIRvu79KIcHfiEqUOOxyvHKjsA6/TpgJYN2PZ7qeD0D+6Tt212n XKpPvwU1S7DeyT1IkPZnkr9flNk/rPUNzHnKD1se1oSgxfib2Qy02/pWQtUcpA/P uFeg0Va+UBek/e+a1nk/YhpMy5/jC5FckH5BauGIWJZ0tZ9gApQ632Aqr2PUC7lm gBgVAU/h2CSbc1N3ZprJOS7b/pZgEidLggCy2o1hBcxNLNxBoTr2lwAbTYAXjeak CfPwlVqMVk227H3trAqnH7SXy2D0gzexMbplNB9FlyDoL7nukSoyuqLMnYjje8j1 T+eguxnyHFHHEEH6SVGo1XPDwHEfLwQ7axyXmAPN6uyqxADrNY8ndyvKX1DRHdIz 2MEeYp9GN8bJFo9nNzaJXVFAgzuaXPcIsJTqkNF6/YIMflY2CHUl9BEMnhX8HM6A xemPQtDDp8hLBsFnsb/Vs8AtSAYcL8JmO18Uh0d6k84hoV1e47jGb+W2EVuovP3a c1GIs0AAEnH5odrEquyTba49IVQXJzTIpp8olE6XRQrBZHgiGvUwvij5EDhZHHYH G2F50rbAi8HFySkxAgMBAAGjggITMIICDzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0l BBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYE FGlKxkvDZtKC8QUYzRr5Y6noosizMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZF Ze/zqOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3Au aW50LXgxLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0 LmludC14MS5sZXRzZW5jcnlwdC5vcmcvMB0GA1UdEQQWMBSCEnN0YXJ0dXAuYWpv dS5hYy5rcjCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEw gdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggr BgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVk IHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ug d2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0 c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQA4MO20 mdHqbq+R0eFCVS0iB3e9toLgFzdox5WaKbYL6gZWpLM18PXjsziVhfYEMZNVxXfm DTNHfBclfmIPRen1NVXxwbcGtP8C7oKocL2EjT4/0hN3bA99DVgNChyxJ3NcyYQL QoP7P/4Q3E55KOZ3QU54wU0Vm/cTcxA/nBXv8gaKJRHtYkrH5ZKopRbsDWI1rZf5 8ZRSEYBD1k8s2GQVavAXPUEiM5oONGgZ+WYVBvi6AgEwkeQDacjnqVOQD2Qfrxlh XB2E0B8VxKakTJJ+DcnZfynEDDdZh4kTf2FTS0SJWB+OZRpipoqf9wRnloJMgPvt iVJhj1BVevSVO9MZ -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAo5UHIb3Q8J7eRFa/PigS o7G+HxsivKHgabCadMs3uuMlD5IZLtZwZ+irbWdWO5ilX9EokAI9KcXcRjT6Nuiy d4HQkzaf/V3jSXE6hWYVchG+7v0ohwd+ISpQ47HK8cqOwDr9OmAlg3Y9nup4PQP7 pO3bXadcqk+/BTVLsN7JPUiQ9meSv1+U2T+s9Q3MecoPWx7WhKDF+JvZDLTb+lZC 1RykD8+4V6DRVr5QF6T975rWeT9iGkzLn+MLkVyQfkFq4YhYlnS1n2AClDrfYCqv Y9QLuWaAGBUBT+HYJJtzU3dmmsk5Ltv+lmASJ0uCALLajWEFzE0s3EGhOvaXABtN gBeN5qQJ8/CVWoxWTbbsfe2sCqcftJfLYPSDN7ExumU0H0WXIOgvue6RKjK6osyd iON7yPVP56C7GfIcUccQQfpJUajVc8PAcR8vBDtrHJeYA83q7KrEAOs1jyd3K8pf UNEd0jPYwR5in0Y3xskWj2c3NoldUUCDO5pc9wiwlOqQ0Xr9ggx+VjYIdSX0EQye FfwczoDF6Y9C0MOnyEsGwWexv9WzwC1IBhwvwmY7XxSHR3qTziGhXV7juMZv5bYR W6i8/dpzUYizQAAScfmh2sSq7JNtrj0hVBcnNMimnyiUTpdFCsFkeCIa9TC+KPkQ OFkcdgcbYXnStsCLwcXJKTECAwEAAQ== -----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 102505331897413765424389128313710832966242 . . . . . . . . [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 04:28:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-06-13 04:28:00 +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 667356907381512753034048057881424637004266170417939109983221746873651712683235568602825271027838913267178358971620290203820404308431132881548839562466759779460592032364770385845002297074492193547160686328546323538066099515489405415343933311494639026636545253214629063823334924310578887829927698104551583674598413840518627474253865604916948774578351725767338566157103209326469548924374572846333564667075715682712006158561012797480866512782929033490516724332856582618345071122743561176598041246936709398818640032464670698123918018130000396227221669797611096791817152192928500441361326597791335687924479854367710493373457648283848558787485383211777682850851790397379041702297085728259822713308667493096176177818120366533696797300914696892609827526996478839853421785187060660288428426314102679895812022325512032594813197190005876776107621366973242482295029977887814544026710159699485165815425042614467717970197036816334543002107124282749465459220296965482512968267361128415329055197357792240270644129769674112553582825230836207379711183992568385616451794659389850468144702333480916798623241723183425317718482901791382409701494487863932081648873718053575902102837240109391081524429074582612769617114188520626630280575213264114980594723121 . . . . . . . . . . . . . . . . . . . . [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) 694ac64bc366d282f10518cd1af963a9e8a2c8b3 . . . . . . . . . . . . . . . . [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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