moodle.cyut.edu.tw
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:57:8e:e9:9a:fe:23:94:ab:7c:e1:12:23:f4:cf:16:8b:97 was issued on by Let's Encrypt.
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=moodle.cyut.edu.tw
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:57:8e:e9:9a:fe:23:94:ab:7c:e1:12:23:f4:cf:16:8b:97Serial Number (int): 291131387041597926877148797542118207163287
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 54:44:f7:58:a4:90:5e:f9:a6:ac:15:58:7c:86:87:d7:d1:52:4b:99
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 77:35:93:55:bf:fe:e2:84:81:d7:b6:b4:d7:95:a1:c3:e0:df:90:1a
Fingerprint (sha256): 71:1d:fa:58:46:4b:02:b3:2d:6a:c1:c7:02:ca:56:79:91:04:c7:92:1b:04:cf:92:78:93:f4:b0:6d:2a:9f:d1
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate moodle.cyut.edu.tw
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for moodle.cyut.edu.tw
Public Key Algorithm
RSA
Key Size
2048
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
moodle.cyut.edu.tw
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Certificate
The complete raw certificate details for moodle.cyut.edu.tw in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFWzCCBEOgAwIBAgISA1eO6Zr+I5SrfOESI/TPFouXMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTExMTAxNTA4MTBaFw0y MDAyMDgxNTA4MTBaMB0xGzAZBgNVBAMTEm1vb2RsZS5jeXV0LmVkdS50dzCCASIw DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJs6LPi2/0MJfhLw1SKW3K92N4Fo CobeWfb6byw+26VXhnVqyFXWTO4Zj7PlXdX8sgrIgP5F7yJeml2UufocV7GfBclM wMXGc8Ai32yF4vwjL70JbWUsQK6VRUDQ/3USXKMUJzDKjGIJ/qxNrFYRwSMoDbvo siZygYrvul0jPbULD3XR+n1dT4UXNukZ59/A4r0gv+KA/vGUzH9buSziNWfojzPi BTRgMrEZ9itfaopOJ8a9/j9LcO3F65bXWDaIQKIKdA+2ukwovvcR/GDpRpSzeTuZ 6Db+WXxeBOwc5gcTHbba5GeSDRKi4tye1r/wprNHgiJahA6cD+zjy/SszXkCAwEA AaOCAmYwggJiMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYI KwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUVET3WKSQXvmmrBVYfIaH 19FSS5kwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo7KEwbwYIKwYBBQUH AQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQteDMubGV0c2VuY3J5 cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQteDMubGV0c2VuY3J5 cHQub3JnLzAdBgNVHREEFjAUghJtb29kbGUuY3l1dC5lZHUudHcwTAYDVR0gBEUw QzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYaaHR0cDov L2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdQBe p3P531bA57U2SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW5WEpwvAAAEAwBGMEQC IDBzycdjxYyALaIqU4OxAGi8nmuJDLC377ZVrtbIzceoAiA6MOQf9R4tQ+pcB1EK VTT+OBFmolbxIK3Z2dSAmRP58gB2AAe3XBvlfWj/8bDGHSMVx7rmV3xXlLdq7rxh Ohpp06IcAAABblYSnFEAAAQDAEcwRQIgUk00hc267+xOWxz4IfnS5zcm8qgH9N/H ngm5wRs9GoICIQDJ3R+cAXJkbU5s4YjwIe0r67wqwzPbJcF8/gPP+EGg1DANBgkq hkiG9w0BAQsFAAOCAQEASHQskOMFB6WAB2DCC9hLipdc28y3OifuYh5+aSD4jJgx 7hoagRtRunBiNzmBVLrRIW1IIEZ3Fka+/Jlnx//ePc5rLxhxoz1NawHbYuQqFWAt D8xCxHUw8d7MZyd90zFMnOr/mjCDgxoGIXC8yHFFKhTIV0WUuQ5W06mS2ILNdS2m J2A+ujpmTSGMhD9iSRWQnLA3uc8om/722Ykm1bMdT1O5TpsjmasO9A12vOGLznr+ wVcsqth17L7irYpUO36GnYrD6QipuGxyYdGwRyfCCqdqLN9k+mHol1E5HyNoMNsk b38Z0att/5XEeOnrFx6CS0I+9Ngo+g+E4ofTJxzpyw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmzos+Lb/Qwl+EvDVIpbc r3Y3gWgKht5Z9vpvLD7bpVeGdWrIVdZM7hmPs+Vd1fyyCsiA/kXvIl6aXZS5+hxX sZ8FyUzAxcZzwCLfbIXi/CMvvQltZSxArpVFQND/dRJcoxQnMMqMYgn+rE2sVhHB IygNu+iyJnKBiu+6XSM9tQsPddH6fV1PhRc26Rnn38DivSC/4oD+8ZTMf1u5LOI1 Z+iPM+IFNGAysRn2K19qik4nxr3+P0tw7cXrltdYNohAogp0D7a6TCi+9xH8YOlG lLN5O5noNv5ZfF4E7BzmBxMdttrkZ5INEqLi3J7Wv/Cms0eCIlqEDpwP7OPL9KzN eQIDAQAB -----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 291131387041597926877148797542118207163287 . . . . . . . . [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 2019-11-10 15:08:10 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-08 15:08:10 +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 'moodle.cyut.edu.tw' . . . . . . . . [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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 19595624761856541253895117354464972733437038176732129747123379937662629639553657148419228634016964964645429091048835836248219053144165872242429366374316862642534897435710065241277881015234542403020828075940482791465491052551455190984237633331932555676316444040037883545404793597542187452540512102214413538285940522470295160005718926189008048926384654151340699590118988016139952887586400884020667256141385605067170919489132721112728972895839733986755606178731701262630841266039532868967922434815743007809011048544793233081193898238018747983191083124968633867850954130995102231255173173035753745669533277990491089849721 . . . . . . . . . . . . . . . . . . . . [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) 5444f758a4905ef9a6ac15587c8687d7d1524b99 . . . . . . . . . . . . . . . . [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 (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'moodle.cyut.edu.tw' . . . . . . . . . . . . . . . . [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) 00ef0075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016e56129c2f000004030046304402203073c9c763c58c802da22a5383b10068bc9e6b890cb0b7efb655aed6c8cdc7a802203a30e41ff51e2d43ea5c07510a5534fe381166a256f120add9d9d4809913f9f200760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e56129c5100000403004730450220524d3485cdbaefec4e5b1cf821f9d2e73726f2a807f4dfc79e09b9c11b3d1a82022100c9dd1f9c0172646d4e6ce188f021ed2bebbc2ac333db25c17cfe03cff841a0d4 . . . . [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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