dywang.csie.cyut.edu.tw

Issued by R3

About this certificate

This digital certificate with serial number 03:cb:7e:e3:16:ce:0a:4f:0e:50:0e:fd:31:66:11:51:e6:3a 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=dywang.csie.cyut.edu.tw

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:cb:7e:e3:16:ce:0a:4f:0e:50:0e:fd:31:66:11:51:e6:3a
Serial Number (int): 330582840121624238009897416165882504275514
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 66:3d:c1:cf:55:1a:a7:b8:d2:d2:44:a4:08:7d:ec:e1:8a:56:ec:e4
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): bd:92:4f:fa:57:38:c7:68:77:36:d5:45:ab:f7:be:7a:38:79:76:03
Fingerprint (sha256): 05:3f:75:78:77:d9:16:b0:81:ed:02:00:c5:a8:f3:04:87:50:b0:2e:cc:74:25:86:a5:40:59:7f:37:0c:67:e2

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate dywang.csie.cyut.edu.tw

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for dywang.csie.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

dywang.csie.cyut.edu.tw

Other certificates including the domain name cyut.edu.tw

(limited to 100 certificates)
dywang.csie.cyut.edu.tw
www.ir.cyut.edu.tw
millennium.lib.cyut.edu.tw
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2015concrete.ce.cyut.edu.tw
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2015concrete.ce.cyut.edu.tw
ait.csie.cyut.edu.tw
ait.csie.cyut.edu.tw
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ait.csie.cyut.edu.tw
moodle.cyut.edu.tw
www.ir.cyut.edu.tw
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dywftp.csie.cyut.edu.tw
admin.cyut.edu.tw
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dywang.csie.cyut.edu.tw
moodle.cyut.edu.tw
web.csie.cyut.edu.tw
webmail.csie.cyut.edu.tw
lc.cyut.edu.tw
dywang.csie.cyut.edu.tw
*.cyut.edu.tw
v.im.cyut.edu.tw
webmail.csie.cyut.edu.tw
dywang.csie.cyut.edu.tw
webmail.csie.cyut.edu.tw
webmail.cyut.edu.tw
general2.cyut.edu.tw
pheromone.cyut.edu.tw
webmail.csie.cyut.edu.tw
dywftp.csie.cyut.edu.tw
2015concrete.ce.cyut.edu.tw
2015concrete.ce.cyut.edu.tw
i-Taiwan.cyut.edu.tw
2015concrete.ce.cyut.edu.tw
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www.csie.cyut.edu.tw
dywang.csie.cyut.edu.tw
mg19.cyut.edu.tw
moodle.cyut.edu.tw
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webmail.csie.cyut.edu.tw
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www.easytest.cyut.edu.tw
dywang.csie.cyut.edu.tw
mwebpac.lib.cyut.edu.tw
cyutotp.cyut.edu.tw
moodle.cyut.edu.tw
www.csie.cyut.edu.tw
millennium.lib.cyut.edu.tw
2015concrete.ce.cyut.edu.tw
web.csie.cyut.edu.tw
ait.csie.cyut.edu.tw
webmail.csie.cyut.edu.tw
*.cyut.edu.tw
2015concrete.ce.cyut.edu.tw
webmail.csie.cyut.edu.tw
v.im.cyut.edu.tw
ait.csie.cyut.edu.tw
ait.csie.cyut.edu.tw
v.im.cyut.edu.tw
ad1.live.cyut.edu.tw
web.csie.cyut.edu.tw
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general2.cyut.edu.tw
www.ceapp.cyut.edu.tw
*.cyut.edu.tw
dywang.csie.cyut.edu.tw
dywang.csie.cyut.edu.tw
ait.csie.cyut.edu.tw
dywftp.csie.cyut.edu.tw
v.im.cyut.edu.tw
m-216.cyut.edu.tw
m-216.cyut.edu.tw
m-216.cyut.edu.tw
web.csie.cyut.edu.tw
dywang.csie.cyut.edu.tw
moodle.cyut.edu.tw
ait.csie.cyut.edu.tw
mg19.cyut.edu.tw
2015concrete.ce.cyut.edu.tw
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Certificate

The complete raw certificate details for dywang.csie.cyut.edu.tw in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzFxitUYxds9ax0M3u/Au
sdC2QqsebM8agV1n6O2Rau+VeTDUAUYR0wb97xr9gJ8ilYY+MBdF8vDQEU08f++v
vW35NoYZIA37zFe7NOcJo1lOU0yEvAnp2cD3kaKTTgXNSogFaBX2Uvo+Oj812T26
rk/z6SIJ9fnC0QxkUEkF82jzIsBIbxZoFhS+bjGVy8bwS8213y4LAF0Gyexm8aXZ
FbXy7pQuYc6+aTaYd73B31clow8Y10sU8oYK/aDZvg/+8YZrxShExHfH1NveMGmJ
cHPT7gj8OHWZptkGvCVzvrSSHiQvAddm923DdSQX4bFIFUv1HpdWdHURXGOc51EG
jwIDAQAB
-----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 330582840121624238009897416165882504275514
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-07 15:03:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-06 15:03:55 +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 'dywang.csie.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 25798171239780107629026293270249095955639523134695620939396939001545982403317883702499701203777229905157562424257148742563468176495218702019121907145877903299423622976538056160366095726927230104226393015679513004882467634098645219548942753962244637702655523237731840856792503091321005596810965153569442687387953872766533663709690917027764444333316167186113555661274986321138613216499773701532427395051350518704814546108425429730947128966675404340162684595792870824391931544147821527655699821924347145209360672639017577163889425652276292610856553056498676124977553390709642483278095350048775823929198693549676642240143
 . . . . . . . . . . . . . . . . . . . . [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)
							663dc1cf551aa7b8d2d244a4087dece18a56ece4
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (27 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'dywang.csie.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a7062c63600000403004630440220648b779f6ac9cd5e9ada2f88ee7b0d1498d42addad03598b043f93c4628679ff022019a4b3d169e4487e539b8414be36848455b22dbd33a9bdfaa2503f4abd061649007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018a7062c8480000040300463044022019cad6f9ebc845866ba9b6fe6004ed9c5b4f0a37c089046561be3d539e2d89070220442595d087142788e59d45180b411f8c269b7f988394f5d4aedfffda68171698
 . . . . [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)
		00a113fd3d210ada710c03429757b5cd002323dc89646a971c7c35f3010968694ec92db4fd00668d6c87018570a8a1993dc3f239db43bebd09a818bac000db6456c6dd66cbb2be64de15803a8769cff1a3c6bc9f1b0d197e9d20e01b8cf3a614950bc0d16b3379556718e47545c1b30b41a805269551b833a750ba312ee5a6a098fbafaa73fc2f9ed56619901715a23dea014c1b31c9d50a32ba1e3d68f8e03d240bd9d6d72e27263ba51cd3f6d1242ec4a7caa253530fa1b1779340dd107928d38d900b80ea51698b4e1fb5d185a26df731e6afe14b3463a3b82d43f722d6f66402973259df5e07d3b954ef3b59bf7f5ff020b1b012c284be23e7137c37534e9e