www.ezwriting.com.tw

Issued by TWCA Secure CA

About this certificate


This digital certificate with serial number 65:c8:45:3b was issued on by TAIWAN-CA INC. .

While the 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.

Cerificate errors/warnings *beta

  • ERROR: Certificate contains no Authority Info Access Issuers
  • ERROR: Certificate doesn't contain any subjectAltName
  • ERROR: Certificate CN is not listed in subjectAltName

Computer Skills Foundation

Organization: Computer Skills Foundation
Organization unit: MIS
State / Province: Taiwan
Locality: Taipei
Country: TW

TAIWAN-CA INC.

Organization: TAIWAN-CA INC.
Organization unit: SSL Certification Service Provider
State / Province: Taiwan
Locality: Taipei
Country: TW

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 65:c8:45:3b
Serial Number (int): 1707623739
Serial Number lenght: 31 bits, 4 octets

SubjectKeyId: 54:29:a7:fd:e5:f1:4e:66:6f:cf:03:87:fb:94:ca:c6:bf:98:7c:33
AuthorityKeyId: 0a:69:4d:3b:5c:3c:e7:1d:61:12:54:3e:cb:58:d9:58:d0:79:f9:74

Fingerprint (sha1): 58:f1:e5:00:0d:ca:37:65:75:85:77:cc:fb:1d:16:99:c2:3e:c7:f8
Fingerprint (sha256): af:01:db:b3:29:b8:41:05:6b:fb:80:4c:73:3d:93:9d:06:29:f6:65:23:83:5a:6d:30:eb:cf:30:c6:8d:c1:be


Revocation information

CRL Distribution Point: http://sslserver.twca.com.tw/sslserver/revoke11.crl

Check the revocation status for the current certificate on www.ezwriting.com.tw
0
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

SHA1 with RSA



Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

7 extensions
No unhandled critical extensions



CA Certificate

This is not a CA certificate

Subject Alternative Names

This certificate doesn't contain any subject alternative names (DNS Name).

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIEizCCA3OgAwIBAgIEZchFOzANBgkqhkiG9w0BAQUFADBsMQswCQYDVQQGEwJU VzEXMBUGA1UEChMOVEFJV0FOLUNBIElOQy4xKzApBgNVBAsTIlNTTCBDZXJ0aWZp Y2F0aW9uIFNlcnZpY2UgUHJvdmlkZXIxFzAVBgNVBAMTDlRXQ0EgU2VjdXJlIENB MB4XDTExMTIyNzA5MDYzNVoXDTE0MTIyNzE1NTk1OVowgYExCzAJBgNVBAYTAlRX MQ8wDQYDVQQIEwZUYWl3YW4xDzANBgNVBAcTBlRhaXBlaTEjMCEGA1UEChMaQ29t cHV0ZXIgU2tpbGxzIEZvdW5kYXRpb24xDDAKBgNVBAsTA01JUzEdMBsGA1UEAxMU d3d3LmV6d3JpdGluZy5jb20udHcwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK AoIBAQDPaYF2S9xLtR++/v4ePyyD8zpZr3wqZnZIL7SLmLHJpsfCroOSL6mcw+6W 0w3+KrjMx6cHRTSlr5RvxTg243/H9VgWqOgV1WXMnuMvpaRXbeaexRFfW4DvbpDg S73x7YKg37q/GnwXBL5D7dmoRDV1GYCA/v5l/H0+Qzc3lrkKu9H2RlDXkbGI+Itu 3AbX5bBCa9sbeZY+oVkfFxzJK3uwbD5yJfG9LGSAKzMJ628J6GK8rUo8edhudFrs I4yZWPCfv0Q7BswObYaWDlA7ElTsr12FiWPunhlLYMYS1SlZqd0WEoDYCZ6JeV5e Deagn3f1KgaQzA0c7zEySynZS9dtAgMBAAGjggEdMIIBGTAfBgNVHSMEGDAWgBQK aU07XDznHWESVD7LWNlY0Hn5dDAdBgNVHQ4EFgQUVCmn/eXxTmZvzwOH+5TKxr+Y fDMwRAYDVR0fBD0wOzA5oDegNYYzaHR0cDovL3NzbHNlcnZlci50d2NhLmNvbS50 dy9zc2xzZXJ2ZXIvcmV2b2tlMTEuY3JsMFcGA1UdIARQME4wTAYHYIEeAwEIBTBB MCIGCCsGAQUFBwICMBYaFFJlc3RyaWN0aW9uID0zLjIuMS4xMBsGCCsGAQUFBwIB Fg93d3cudHdjYS5jb20udHcwCQYDVR0TBAIwADAOBgNVHQ8BAf8EBAMCBaAwHQYD VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMA0GCSqGSIb3DQEBBQUAA4IBAQBk QqJdMDl2h2hDcniEnMEiq4kxZY2SjWDWeKxehXaKF5GSeN0Db34IpCno1hzFDBk9 9SLowtEXHP8xUbbNv6kUsBE2vNAqDNHBkJ3/d8RW9c/IS6IrDecRgGN0IO7kSwz6 ONC9Akr2qRUWhLjXP/EY0MyKJF1t1ePMcGlhmSd+qBzM9pCCv7eAtpbNmRsNa1vR mP7XxC5aqR9IC7b/c7t3BlpWaNVUmyq5Ug7gh/voXZY3acOVAyGXNsmtXDKRGFBn RNtb02vOwI1sib64cwdr8LC9nABiziZPdKXUGMpiUKvAJbFLWZ/7eCW7GytY30ga lD6SRqCo1IIKg2yt5stc -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz2mBdkvcS7Ufvv7+Hj8s g/M6Wa98KmZ2SC+0i5ixyabHwq6Dki+pnMPultMN/iq4zMenB0U0pa+Ub8U4NuN/ x/VYFqjoFdVlzJ7jL6WkV23mnsURX1uA726Q4Eu98e2CoN+6vxp8FwS+Q+3ZqEQ1 dRmAgP7+Zfx9PkM3N5a5CrvR9kZQ15GxiPiLbtwG1+WwQmvbG3mWPqFZHxccySt7 sGw+ciXxvSxkgCszCetvCehivK1KPHnYbnRa7COMmVjwn79EOwbMDm2Glg5QOxJU 7K9dhYlj7p4ZS2DGEtUpWandFhKA2AmeiXleXg3moJ939SoGkMwNHO8xMksp2UvX 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 1707623739 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . . . . . [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 INC.' . . . . . . . . . . . . [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 'SSL Certification Service Provider' . . . . . . . . . . . . [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 CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2011-12-27 09:06:35 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2014-12-27 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 'Taiwan' . . . . . . . . . . . . [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 'Computer Skills Foundation' . . . . . . . . . . . . [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 'MIS' . . . . . . . . . . . . [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 'www.ezwriting.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 26183355933286067770234121131063353687618528190112011353917879204768125607575276547710016885484326797228765513248310614447043459876932360860845871717239777584491820834085932290938513981094378537124875843607792097264227662844786544657902036208272986150016047146785285997299659468939959527443413326456604491877983636018922964247384239940051545541011376021295851591103088223396734863420089427980976966185716699445600812667702744401749675431942978849742271290373391549310559162837479331054154312118052131934463272594172047566691515586326959227382584360174454452952199422018580634173885702209033209969675949862783300654957 . . . . . . . . . . . . . . . . . . . . [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 0a694d3b5c3ce71d6112543ecb58d958d079f974 . . . . . . . . . . . . . . . . [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) 5429a7fde5f14e666fcf0387fb94cac6bf987c33 . . . . . . . . . . . . . . . . [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 (61 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/revoke11.crl' . . . . . . . . . . . . . . . . [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 (80 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.158.3.1.8.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:26|false] VisibleString, ISO646String [82 101 115 116 114 105 99 116 105 111 110 32 61 51 46 50 46 49 46 49] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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