community.cs.hku.hk
- community.cs.hku.hk -
Issued by
About this certificate
This digital certificate with serial number 0d:e7:ec was issued on by Equifax.
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We have idenified some issues with this certificate:
- KeyUsage [ContentCommitment DataEncipherment DigitalSignature KeyEncipherment] (00001111) inconsistent with multiple purpose ExtKeyUsage [clientAuth serverAuth] The certificate MUST only be used for a purpose consistent with both key usage extension and extended key usage extension. (RFC 5280, Section 4.2.1.12.)
community.cs.hku.hk
Company registration number:
j8pysXrHAL26/9GAUMq4fvbKS2eWdm1T
Organization: community.cs.hku.hk
Organization unit: GT97736658
Organization unit: See www.geotrust.com/resources/cps (c)09
Organization unit: Domain Control Validated - QuickSSL Premium(R)
Organization: community.cs.hku.hk
Organization unit: GT97736658
Organization unit: See www.geotrust.com/resources/cps (c)09
Organization unit: Domain Control Validated - QuickSSL Premium(R)
Country:
HK
Equifax
Organization:
Equifax
Organization unit: Equifax Secure Certificate Authority
Organization unit: Equifax Secure Certificate Authority
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 0d:e7:ecSerial Number (int): 911340
Serial Number lenght: 20 bits, 3 octets
SubjectKeyId: 4c:09:05:7b:36:c9:bb:3a:9d:37:af:f3:11:44:df:d7:56:34:d7:dc
AuthorityKeyId: 48:e6:68:f9:2b:d2:b2:95:d7:47:d8:23:20:10:4f:33:98:90:9f:d4
Fingerprint (sha1): 1a:9f:a4:f3:1b:23:72:e7:93:4f:8d:09:f9:44:bd:86:9a:04:b5:79
Fingerprint (sha256): 00:cf:4b:2a:26:83:1a:85:56:26:2d:ee:e8:ac:ad:af:fd:42:d0:c6:73:a3:b2:a6:1f:6b:d4:63:5c:94:4f:e6
Revocation information
CRL Distribution Point: http://crl.geotrust.com/crls/secureca.crlCheck the revocation status for certificate community.cs.hku.hk
0
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for community.cs.hku.hk
Public Key Algorithm
RSA
Key Size
1024
Signature Algorithm
SHA1 with RSA
Key Usage
Digital Signature
Content Commitment
Key Encipherment
Data Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
5 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.
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Certificate
The complete raw certificate details for community.cs.hku.hk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIDazCCAtSgAwIBAgIDDefsMA0GCSqGSIb3DQEBBQUAME4xCzAJBgNVBAYTAlVT MRAwDgYDVQQKEwdFcXVpZmF4MS0wKwYDVQQLEyRFcXVpZmF4IFNlY3VyZSBDZXJ0 aWZpY2F0ZSBBdXRob3JpdHkwHhcNMDkxMTE1MDkyMjQ2WhcNMTIwMTE2MTAyMzQ4 WjCB9TEpMCcGA1UEBRMgajhweXNYckhBTDI2LzlHQVVNcTRmdmJLUzJlV2RtMVQx CzAJBgNVBAYTAkhLMRwwGgYDVQQKExNjb21tdW5pdHkuY3MuaGt1LmhrMRMwEQYD VQQLEwpHVDk3NzM2NjU4MTEwLwYDVQQLEyhTZWUgd3d3Lmdlb3RydXN0LmNvbS9y ZXNvdXJjZXMvY3BzIChjKTA5MTcwNQYDVQQLEy5Eb21haW4gQ29udHJvbCBWYWxp ZGF0ZWQgLSBRdWlja1NTTCBQcmVtaXVtKFIpMRwwGgYDVQQDExNjb21tdW5pdHku Y3MuaGt1LmhrMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQsVL1tgLBXzW6 hoxY2ZlfVS2Keikcsgp1+MHYeeh4TwMfm49TJlxtdFf7kkaCpJTi7lDXjvb80Zll RRS9LmaLOUnQuWhSF5fJ7E5XSuvWnFIh9XbQ3FitabmnZTYN/RMLT8hkcevyIgDk pzt0FCPMHybNmftio2xKlo1BjYSqAQIDAQABo4GuMIGrMA4GA1UdDwEB/wQEAwIE 8DAdBgNVHQ4EFgQUTAkFezbJuzqdN6/zEUTf11Y019wwOgYDVR0fBDMwMTAvoC2g K4YpaHR0cDovL2NybC5nZW90cnVzdC5jb20vY3Jscy9zZWN1cmVjYS5jcmwwHwYD VR0jBBgwFoAUSOZo+SvSspXXR9gjIBBPM5iQn9QwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMA0GCSqGSIb3DQEBBQUAA4GBACrWECdJnmo4DN09BvM6NuLD EkzvvcpbEuvb6oPGHHqQsgjTSz9AxlE0HCPajARnHqIPB7z0FaahxBuOo4+/9B3X egBLJsXV8stkQEyYk8CxwJnV1YHEnuQWAT/w7X2G/fQiXX/ATX2+bZB4b7+HuaOi rJichrv5W5V+dFSlmiza -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQsVL1tgLBXzW6hoxY2ZlfVS2K eikcsgp1+MHYeeh4TwMfm49TJlxtdFf7kkaCpJTi7lDXjvb80ZllRRS9LmaLOUnQ uWhSF5fJ7E5XSuvWnFIh9XbQ3FitabmnZTYN/RMLT8hkcevyIgDkpzt0FCPMHybN mftio2xKlo1BjYSqAQIDAQAB -----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 911340 . . . . . . . . [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 '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 'Equifax' . . . . . . . . . . . . [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 'Equifax Secure Certificate Authority' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2009-11-15 09:22:46 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2012-01-16 10:23:48 +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 2.5.4.5 (serialNumber) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'j8pysXrHAL26/9GAUMq4fvbKS2eWdm1T' . . . . . . . . . . . . [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 'HK' . . . . . . . . . . . . [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 'community.cs.hku.hk' . . . . . . . . . . . . [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 'GT97736658' . . . . . . . . . . . . [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 'See www.geotrust.com/resources/cps (c)09' . . . . . . . . . . . . [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 'Domain Control Validated - QuickSSL Premium(R)' . . . . . . . . . . . . [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 'community.cs.hku.hk' . . . . . . . . [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 (1120 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 146548978109140140009713607546548817449758312981544832166363486442913951580083145795180873924825343788510742356289796270939927729890931615187173789459348833159100286331681081901901147521233472367425826489708770932597175379296932028083239986336113887000679278498106527834622474610613885165264371904923983718913 . . . . . . . . . . . . . . . . . . . . [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 (4 bits) 04f0 . . . . . . . . . . . . . . . . [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) 4c09057b36c9bb3a9d37aff31144dfd75634d7dc . . . . . . . . . . . . . . . . [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 (51 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://crl.geotrust.com/crls/secureca.crl' . . . . . . . . . . . . . . . . [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 48e668f92bd2b295d747d82320104f3398909fd4 . . . . . . . . . . . . . . . . [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 (1024 bits) 002ad61027499e6a380cdd3d06f33a36e2c3124cefbdca5b12ebdbea83c61c7a90b208d34b3f40c651341c23da8c04671ea20f07bcf415a6a1c41b8ea38fbff41dd77a004b26c5d5f2cb64404c9893c0b1c099d5d581c49ee416013ff0ed7d86fdf4225d7fc04d7dbe6d90786fbf87b9a3a2ac989c86bbf95b957e7454a59a2cda