learning.megabank.com.tw

Issued by

About this certificate


This digital certificate with serial number 1a:63:00:a8:db:d8:29:cb:47:3a:58:8c:78:15:31:30 was issued on by Chunghwa Telecom Co., Ltd. .

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.

Cerificate errors/warnings *beta

  • WARNING: Certificate contains unknown extension ([2.5.29.9])
  • ERROR: localityName or stateOrProvinceName is required if organizationName is set
  • ERROR: stateOrProvinceName is required if organizationName is set

兆豐國際商業銀行股份有限公司

Organization: 兆豐國際商業銀行股份有限公司
Country: TW

Chunghwa Telecom Co., Ltd.

Organization: Chunghwa Telecom Co., Ltd.
Organization unit: Public Certification Authority - G2
Country: TW

Time untill certificate expires

This certificate will expire on

Certificate Details

Serial Number (hex): 1a:63:00:a8:db:d8:29:cb:47:3a:58:8c:78:15:31:30
Serial Number (int): 35073978657772605521890905075897151792
Serial Number lenght: 125 bits, 16 octets

SubjectKeyId: d8:4e:8e:76:f2:64:1c:4f:34:7e:ba:69:a1:97:51:a1:7f:e1:86:d3
AuthorityKeyId: cb:83:7d:65:15:af:a9:c9:f3:a8:a9:f4:64:7c:79:52:05:74:40:61

Fingerprint (sha1): 45:63:17:3c:ed:f0:54:59:4a:57:4b:df:93:57:76:77:26:4b:45:34
Fingerprint (sha256): 98:d2:9f:d7:57:2f:48:01:f8:f3:ac:0a:00:40:7b:fe:8d:d5:df:7b:2c:d6:9a:8f:62:31:58:90:06:cc:9f:04

Issuing Certificate URL: http://repository.publicca.hinet.net/certs/IssuedToThisCA.p7b

Revocation information

OCSP Server: http://ocsp.publicca.hinet.net/OCSP/ocspG2
CRL Distribution Point: http://repository.publicca.hinet.net/crl/PubCAG2/100-1/complete.crl
CRL Distribution Point: http://repository.publicca.hinet.net/crl/PubCAG2/complete.crl

Check the revocation status for the current certificate on learning.megabank.com.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: learning.megabank.com.tw

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIFljCCBH6gAwIBAgIQGmMAqNvYKctHOliMeBUxMDANBgkqhkiG9w0BAQsFADBg MQswCQYDVQQGEwJUVzEjMCEGA1UECgwaQ2h1bmdod2EgVGVsZWNvbSBDby4sIEx0 ZC4xLDAqBgNVBAsMI1B1YmxpYyBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eSAtIEcy MB4XDTE1MDMwOTAxMzQxN1oXDTE3MDUxNTE1NTk1OVowZTELMAkGA1UEBhMCVFcx MzAxBgNVBAoMKuWFhuixkOWci+mam+WVhualremKgOihjOiCoeS7veaciemZkOWF rOWPuDEhMB8GA1UEAwwYbGVhcm5pbmcubWVnYWJhbmsuY29tLnR3MIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAo8N9UkjSyotKOZYGaXkICb+h5eOOyRv+ XE4zv8F1jpZAixQZMK/IqiAR0LIWnDv1YwEYLoSDGrIiS2YwzJDuHPGJfqHTyzyD 5OdEGa9f0KhFQjxXCS9zQlXLXW50kRQuZeBEQVevukvsLzTXuBli+zLDDqjx3Abw rrkjnklz3v6KfOaqVRm2DVqqTyNlX+kk5HFqkFbRwrnqO9Mw8fr0y6faE14IWPp3 4f4Zx9i0JQoY8fr/E73+xh6LvzWoLCG6cVIpyUpQ1wHThLUfoVAQcqYmncffowEU i1DfpPZhr+nwnFOBZYaunyMH8m+k0Fd/YHjayEQKHK+IWqlq8qEVbQIDAQABo4IC RTCCAkEwgZMGCCsGAQUFBwEBBIGGMIGDMEkGCCsGAQUFBzAChj1odHRwOi8vcmVw b3NpdG9yeS5wdWJsaWNjYS5oaW5ldC5uZXQvY2VydHMvSXNzdWVkVG9UaGlzQ0Eu cDdiMDYGCCsGAQUFBzABhipodHRwOi8vb2NzcC5wdWJsaWNjYS5oaW5ldC5uZXQv T0NTUC9vY3NwRzIwIgYDVR0gBBswGTANBgsrBgEEAYG3I2QAAzAIBgZngQwBAgIw HwYDVR0jBBgwFoAUy4N9ZRWvqcnzqKn0ZHx5UgV0QGEwgZsGA1UdHwSBkzCBkDBJ oEegRYZDaHR0cDovL3JlcG9zaXRvcnkucHVibGljY2EuaGluZXQubmV0L2NybC9Q dWJDQUcyLzEwMC0xL2NvbXBsZXRlLmNybDBDoEGgP4Y9aHR0cDovL3JlcG9zaXRv cnkucHVibGljY2EuaGluZXQubmV0L2NybC9QdWJDQUcyL2NvbXBsZXRlLmNybDAd BgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDgYDVR0PAQH/BAQDAgWgMCMG A1UdEQQcMBqCGGxlYXJuaW5nLm1lZ2FiYW5rLmNvbS50dzAdBgNVHQ4EFgQU2E6O dvJkHE80frppoZdRoX/hhtMwUwYDVR0JBEwwSjAPBghghnYBZAKBSDEDAgFkMA8G CGCGdgFkAoFJMQMCAWUwJgYIYIZ2AWQCgUoxGgwYbGVhcm5pbmcubWVnYWJhbmsu Y29tLnR3MA0GCSqGSIb3DQEBCwUAA4IBAQAXYdnW1yL7xkdXSHKERQe0f7jqVgYq eikwwUADZoe7soozvxBXv177h9coeWpYWj72QrZAHa19Z2kvYavn8Aea/SUUcGvp AZzaUWBuzpxYvjw3CiYgHbTKfuhalEyAJDglAk0SoRLabeBOdKix0Yv3JpWnyBDN FCCJVImOEwdhkFt50UK/vdsG3Y5HbqcK8l8TKMnMMbdznW1JppjxU6lGLMACedRj F4sC4CZvP8lCQ25kyImt12vZ/NuUz8tHq0LMZoIzdduhNePENRTn5rX5sqhiwFZi iJS9lYeH3K/XwJOPgL5f0MyUb0U9DPAv2i0Zyhp3OrtXSM+2QBj3O0B1 -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAo8N9UkjSyotKOZYGaXkI Cb+h5eOOyRv+XE4zv8F1jpZAixQZMK/IqiAR0LIWnDv1YwEYLoSDGrIiS2YwzJDu HPGJfqHTyzyD5OdEGa9f0KhFQjxXCS9zQlXLXW50kRQuZeBEQVevukvsLzTXuBli +zLDDqjx3Abwrrkjnklz3v6KfOaqVRm2DVqqTyNlX+kk5HFqkFbRwrnqO9Mw8fr0 y6faE14IWPp34f4Zx9i0JQoY8fr/E73+xh6LvzWoLCG6cVIpyUpQ1wHThLUfoVAQ cqYmncffowEUi1DfpPZhr+nwnFOBZYaunyMH8m+k0Fd/YHjayEQKHK+IWqlq8qEV bQIDAQAB -----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 35073978657772605521890905075897151792 . . . . . . . . [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:12|false] UTF8String 'Chunghwa Telecom Co., Ltd.' . . . . . . . . . . . . [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:12|false] UTF8String 'Public Certification Authority - G2' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-03-09 01:34:17 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-05-15 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 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String '兆豐國際商業銀行股份有限公司' . . . . . . . . . . . . [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:12|false] UTF8String 'learning.megabank.com.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 20673243192927166669163695427270310930870488722204781335535902658147281759589206327925214650235374044115190089580886371313466843997173924708029413152574935067866764535166744027016783911573278846314205216170928783641321930974964424301764691545299851384161678864506530687773896308703444604065317560262050358351559897768545590756311956030704157055205730648714972826561153200005102622985836419140189413627752602855203174214407387438393716941442489127337029953442220913127451014769233558591080407618661757664735981397770479565238294369324127158032907752409357182300668000231973887770164532350096257343506723177950443804013 . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (134 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://repository.publicca.hinet.net/certs/IssuedToThisCA.p7b' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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.publicca.hinet.net/OCSP/ocspG2' . . . . . . . . . . . . . . . . [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 (27 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.23459.100.0.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.2 (Organization Validation Certificates Policy) . . . . . . . . . . . . . . . . [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 cb837d6515afa9c9f3a8a9f4647c795205744061 . . . . . . . . . . . . . . . . [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 (147 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://repository.publicca.hinet.net/crl/PubCAG2/100-1/complete.crl' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://repository.publicca.hinet.net/crl/PubCAG2/complete.crl' . . . . . . . . . . . . . . . . [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 2.5.29.15 (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 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (28 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'learning.megabank.com.tw' . . . . . . . . . . . . . . . . [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) d84e8e76f2641c4f347eba69a19751a17fe186d3 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.9 (subjectDirectoryAttributes) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (76 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.886.1.100.2.200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.886.1.100.2.201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.886.1.100.2.202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'learning.megabank.com.tw' . . . . [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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