m.ntu.edu.tw

Issued by TWCA Secure SSL Certification Authority

About this certificate


This digital certificate with serial number 47:df:00:00:00:00:1b:85:5d:fe:46:71:ee:83:85:a8 was issued on by TAIWAN-CA .

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com.

National Taiwan University

Organization: National Taiwan University
Organization unit: National Taiwan University
State / Province: Taipei
Locality: Taipei
Country: TW

TAIWAN-CA

Organization: TAIWAN-CA
Organization unit: Secure SSL Sub-CA
State / Province: Taipei
Locality: Taipei
Country: TW

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Certificate Details

Serial Number (hex): 47:df:00:00:00:00:1b:85:5d:fe:46:71:ee:83:85:a8
Serial Number (int): 95533069900182423501417529589870331304
Serial Number lenght: 127 bits, 16 octets

SubjectKeyId: d3:1a:c3:19:3b:04:5a:db:2f:b0:0f:fb:26:09:eb:4d:c8:f6:05:fb:c3:f8:43:f0:70:c1:db:2a:ad:32:7a:e3
AuthorityKeyId: f8:07:c2:68:24:ff:85:95:cb:db:1e:e3:33:9c:2a:4f:97:20:56:7b

Fingerprint (sha1): 49:41:01:99:78:eb:38:5e:f3:90:30:8e:fd:ce:15:54:b2:ea:6c:26
Fingerprint (sha256): 5d:f1:00:fc:51:29:21:98:d9:58:4d:5f:b4:cf:93:e2:f3:05:a9:40:d1:02:24:e3:75:50:44:c4:a1:cf:ac:c8

Issuing Certificate URL: http://sslserver.twca.com.tw/cacert/secure_sha2_2014.crt

Revocation information

OCSP Server: http://twcasslocsp.twca.com.tw/
CRL Distribution Point: http://sslserver.twca.com.tw/sslserver/Securessl_revoke_sha2_2014.crl

Check the revocation status for the current certificate on m.ntu.edu.tw
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details about this certificate


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

This certificate doesn't contain any other subject alternative names besides the common name of the subject: m.ntu.edu.tw

Certificate

The complete raw certificate details in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIFRDCCBCygAwIBAgIQR98AAAAAG4Vd/kZx7oOFqDANBgkqhkiG9w0BAQsFADBv MQswCQYDVQQGEwJUVzESMBAGA1UEChMJVEFJV0FOLUNBMRowGAYDVQQLExFTZWN1 cmUgU1NMIFN1Yi1DQTEwMC4GA1UEAxMnVFdDQSBTZWN1cmUgU1NMIENlcnRpZmlj YXRpb24gQXV0aG9yaXR5MB4XDTE1MTEwMzAxNTQwNVoXDTE4MTEwMzE1NTk1OVow gZAxCzAJBgNVBAYTAlRXMQ8wDQYDVQQIEwZUYWlwZWkxDzANBgNVBAcTBlRhaXBl aTEjMCEGA1UEChMaTmF0aW9uYWwgVGFpd2FuIFVuaXZlcnNpdHkxIzAhBgNVBAsT Gk5hdGlvbmFsIFRhaXdhbiBVbml2ZXJzaXR5MRUwEwYDVQQDEwxtLm50dS5lZHUu dHcwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDqbhegx1C1PcavEqEC PbIiK10Xlt3ZJ9bghDqIZ1L6etTBMNn+JGWIf/G0cpEUCwJyJETLrpH5UQ4RYRXW 39ZztMYEGMnxDNuFRMHTdEBovPG3oPD8+BlQrOk37SnShxd624blnCmB2vBP2q+r 3m97WBAUcyTmn/ORNZ6zoVWp/SxH3II9+23gpkvje/PzCxbtQR5gWQYYqEVTsPNO 7gDq+gvWshCWuM6wQoALc3bvRwonV+1CrpzWbOQXqmWB1zA/KuMImE+DltzQ2DWI H0CQExZG5oX/zOVG+jjGHHhT6OO4UyeOM+lcAEy9l9Druwjvva8CyCr9/d5tWUzQ iyPTAgMBAAGjggG4MIIBtDAfBgNVHSMEGDAWgBT4B8JoJP+FlcvbHuMznCpPlyBW ezApBgNVHQ4EIgQg0xrDGTsEWtsvsA/7JgnrTcj2BfvD+EPwcMHbKq0yeuMwVgYD VR0fBE8wTTBLoEmgR4ZFaHR0cDovL3NzbHNlcnZlci50d2NhLmNvbS50dy9zc2xz ZXJ2ZXIvU2VjdXJlc3NsX3Jldm9rZV9zaGEyXzIwMTQuY3JsMBcGA1UdEQQQMA6C DG0ubnR1LmVkdS50dzCBgQYIKwYBBQUHAQEEdTBzMEQGCCsGAQUFBzAChjhodHRw Oi8vc3Nsc2VydmVyLnR3Y2EuY29tLnR3L2NhY2VydC9zZWN1cmVfc2hhMl8yMDE0 LmNydDArBggrBgEFBQcwAYYfaHR0cDovL3R3Y2Fzc2xvY3NwLnR3Y2EuY29tLnR3 LzA3BgNVHSAEMDAuMCwGCysGAQQBgr8lAQEZMB0wGwYIKwYBBQUHAgEWD3d3dy50 d2NhLmNvbS50dzAJBgNVHRMEAjAAMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDQYJKoZIhvcNAQELBQADggEBALD+6QjnsT8E 6grw59vtb7SOI4mUoyS71ZTtckFDMSdUNiEbaVtsFOMve2nu/TH6Mx9qzs6IdkR8 yc1DVqYQ8l1Mql/f1LaBh9duG8WpKLXbywnwvZ8HLQKhN+0NU+D6SHGwjnKMKdlp 4dPvnKsSsgeO7KNbdvF0TllyXF2CmjRjM+4igD+Q6POpODNuHRbvjcG5r3bFhPqM VP5oYwSNifs64qTxsBf2H4opyiaR0AljSFxufRE5ODBF+pdrcMPV93/CSMBCSbo3 ACmniixllyr3rq/LIYfahEkhToqZahoRpROti4c5/CO4JMohHQTU9PsXYTHwKfjP 7VhixAG3bmM= -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6m4XoMdQtT3GrxKhAj2y IitdF5bd2SfW4IQ6iGdS+nrUwTDZ/iRliH/xtHKRFAsCciREy66R+VEOEWEV1t/W c7TGBBjJ8QzbhUTB03RAaLzxt6Dw/PgZUKzpN+0p0ocXetuG5ZwpgdrwT9qvq95v e1gQFHMk5p/zkTWes6FVqf0sR9yCPftt4KZL43vz8wsW7UEeYFkGGKhFU7DzTu4A 6voL1rIQlrjOsEKAC3N270cKJ1ftQq6c1mzkF6plgdcwPyrjCJhPg5bc0Ng1iB9A kBMWRuaF/8zlRvo4xhx4U+jjuFMnjjPpXABMvZfQ67sI772vAsgq/f3ebVlM0Isj 0wIDAQAB -----END PUBLIC KEY-----

ASN1 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 95533069900182423501417529589870331304 . . . . . . . . [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 'TW' . . . . . . . . . . . . [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 'TAIWAN-CA' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Secure SSL Sub-CA' . . . . . . . . . . . . [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 'TWCA Secure SSL Certification Authority' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-11-03 01:54:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-11-03 15:59:59 +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 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'TW' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.8 (stateOrProvinceName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Taipei' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Taipei' . . . . . . . . . . . . [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 'National Taiwan University' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'National Taiwan University' . . . . . . . . . . . . [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 'm.ntu.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 29594051897087759143782871571236376727493914895936222508845184941452728302874115731734613891156476242001082898990915774468120913583424045434075657085831987265453858872963871540802053017566775617095953038712256892193454045361252177127270630429392654257633352843579148691913774333595336200200335309122701110723630755374231474677068302193381626011864033902344347912283665502942977522381440287392584003214645711414683090666639065324438851295023327436082342558213021444262016544028805887526310889494972380050699798963413569493696559846867520756542716300617575885568833579700400858779583434946376553526819549339867073422291 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName f807c26824ff8595cbdb1ee3339c2a4f9720567b . . . . . . . . . . . . . . . . [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 (34 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (32 bytes) d31ac3193b045adb2fb00ffb2609eb4dc8f605fbc3f843f070c1db2aad327ae3 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (79 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://sslserver.twca.com.tw/sslserver/Securessl_revoke_sha2_2014.crl' . . . . . . . . . . . . . . . . [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 (16 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'm.ntu.edu.tw' . . . . . . . . . . . . . . . . [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 (117 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://sslserver.twca.com.tw/cacert/secure_sha2_2014.crt' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://twcasslocsp.twca.com.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 (48 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.40869.1.1.25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'www.twca.com.tw' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 2.5.29.15 (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 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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