web.csie.cyut.edu.tw
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:0e:1b:b1:85:8a:af:d1:46:f0:7f:0c:19:7b:e4:39:87:1f was issued on by Let's Encrypt.
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We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=web.csie.cyut.edu.tw
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:0e:1b:b1:85:8a:af:d1:46:f0:7f:0c:19:7b:e4:39:87:1fSerial Number (int): 266137621833152408411275302616266314450719
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 8c:1f:1c:2a:e3:db:7a:22:21:c1:b9:c3:25:98:b8:b2:dd:33:ec:4c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9a:87:a9:a8:99:61:20:c8:62:0d:3d:f9:5a:85:cb:cb:14:0f:f9:3d
Fingerprint (sha256): 4d:98:5e:c8:6e:c6:bc:0f:91:48:25:ee:c0:a9:36:07:b5:9e:c7:f6:84:e0:2d:eb:a7:ee:dd:21:c3:fe:0f:1d
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate web.csie.cyut.edu.tw
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for web.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
web.csie.cyut.edu.tw
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Certificate
The complete raw certificate details for web.csie.cyut.edu.tw in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFYDCCBEigAwIBAgISAw4bsYWKr9FG8H8MGXvkOYcfMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAzMDgxNTA5MTVaFw0x OTA2MDYxNTA5MTVaMB8xHTAbBgNVBAMTFHdlYi5jc2llLmN5dXQuZWR1LnR3MIIB IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2+VWMy7SGkXFwewaeMJuagqS 05iJ/qa1qQPFfuruFMrCh6UcmmEqjtW6OStGNDCLBCttv7U5sk0TmBI8x4L7jIaA NgCP9A7tc3e6cnN+T8VmRzlLx6gGjLCbaQY+x5YyzYZ0lzvacCVEQnBz7yvwVdgo 945/se7n1zbxCB3Hca70nMP9H+odnWX8/5S9RkxhwcfUG3c5qnsRLlBqHoLemVZp KNtjEvHS31v2xAgZIo3J343I5uGpkCQJ1aFrYTZogToQXzBr4zW2eD4SezH0JglJ kpvEI73QWZ2XgNII7aYaqD6KyI6M9oZd5roeIRCMEIJQ/MPc4g5lfPLuMZb8CwID AQABo4ICaTCCAmUwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMB BggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSMHxwq49t6IiHBucMl mLiy3TPsTDAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEF BQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5j cnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5j cnlwdC5vcmcvMB8GA1UdEQQYMBaCFHdlYi5jc2llLmN5dXQuZWR1LnR3MEwGA1Ud IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDw AHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI+6SPKJMBnd3x2/4AAAFpXhDU0gAABAMA RzBFAiAanz4Y1aP7TtCwz0H5JObUjfdkzg668o6ZAwMcesTnowIhANHCJc8dBeuB u/kUHfdCXyVs/59BR4+BpuybZihMGYc1AHYAKTxRllTIOWW6qlD8WAfUt2+/WHop ctykwwz05UVH9HgAAAFpXhDVCAAABAMARzBFAiBVT4qCu1TR8zvOdYXGH+wLHpTl ApxpJAolbBQ/oq6Z4gIhAK2dHcXmXgj22Skt956jmECy50V/ORsHr8lDw3ZgNi9r MA0GCSqGSIb3DQEBCwUAA4IBAQAuHZx2eX4IWzeJCPgxYNPTWw6KC3tiEbiahOJl 7eGTgyDglxqTORRCPe2IyfdeIm6jJ+3g1axLi1bNje3S8tVbxseUmvfkcF93MRoS Oel8NDTZacADaD3HMtM3Wc68Scx/XAFRIu+14NjpSGKLQZNzcWFBPrvgxcL600st Gd8Kl9wX6KunR+aOKaI4Uyx+ZXPcfePNeJrtOOKkz8FSF9KDCLsFlSOhI29/NAIy fKm0tOyp6A5hsWcBblZQV870lMcp9SVIwIqQUnqhbbF76Ww7ZR5C2sBuK93jD8qb bELJpuGDkjvMKLvs6GHe6TQ1AQ4XlPYS6tFikBhlRxYhzR5i -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2+VWMy7SGkXFwewaeMJu agqS05iJ/qa1qQPFfuruFMrCh6UcmmEqjtW6OStGNDCLBCttv7U5sk0TmBI8x4L7 jIaANgCP9A7tc3e6cnN+T8VmRzlLx6gGjLCbaQY+x5YyzYZ0lzvacCVEQnBz7yvw Vdgo945/se7n1zbxCB3Hca70nMP9H+odnWX8/5S9RkxhwcfUG3c5qnsRLlBqHoLe mVZpKNtjEvHS31v2xAgZIo3J343I5uGpkCQJ1aFrYTZogToQXzBr4zW2eD4SezH0 JglJkpvEI73QWZ2XgNII7aYaqD6KyI6M9oZd5roeIRCMEIJQ/MPc4g5lfPLuMZb8 CwIDAQAB -----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 266137621833152408411275302616266314450719 . . . . . . . . [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 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-08 15:09:15 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-06 15:09:15 +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 'web.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 27759278938381393968632231227577524749136000468621049180555931901803943714894945665118801839540202763161909026059836178436632319056314788200425534655622057557568881621455490800360286738172285912760492771088422422573965011069803982699715616944647808927712338496429736577957941178239384292213009249868789897238711377211372794232342871664897705364250287692997259371507116596873175691116701041614022176052988811617350407015129595707819942647570904017952600217437033769065744470751732408392683247517779835771002687306627715296774699899219579017092524024912841311599493835704587360357294794015407063964511855538018549431307 . . . . . . . . . . . . . . . . . . . . [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) 8c1f1c2ae3db7a2221c1b9c32598b8b2dd33ec4c . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'web.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 (69 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 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001695e10d4d2000004030047304502201a9f3e18d5a3fb4ed0b0cf41f924e6d48df764ce0ebaf28e9903031c7ac4e7a3022100d1c225cf1d05eb81bbf9141df7425f256cff9f41478f81a6ec9b66284c198735007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001695e10d50800000403004730450220554f8a82bb54d1f33bce7585c61fec0b1e94e5029c69240a256c143fa2ae99e2022100ad9d1dc5e65e08f6d9292df79ea39840b2e7457f391b07afc943c37660362f6b . . . . [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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