dywftp.csie.cyut.edu.tw
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:c9:ae:ad:9f:88:29:69:16:2a:30:9f:8d:fd:89:95:3d:e7 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=dywftp.csie.cyut.edu.tw
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:c9:ae:ad:9f:88:29:69:16:2a:30:9f:8d:fd:89:95:3d:e7Serial Number (int): 417078086652463692639538503861868973866471
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 6a:a9:27:fa:1a:5d:67:fe:d1:02:16:a1:ff:2a:19:c1:da:6b:27:ea
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): e1:e7:bb:15:5a:78:44:0a:9b:16:a1:52:17:73:b9:e1:7a:f6:8a:46
Fingerprint (sha256): 39:95:95:f9:38:b5:ab:21:54:e6:96:ec:fe:99:ca:fe:15:70:66:09:33:09:63:99:8f:f3:d9:03:71:f0:12:1c
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate dywftp.csie.cyut.edu.tw
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for dywftp.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
dywftp.csie.cyut.edu.tw
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Certificate
The complete raw certificate details for dywftp.csie.cyut.edu.tw in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGGTCCBQGgAwIBAgISBMmurZ+IKWkWKjCfjf2JlT3nMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA4MDgxMDAxNDVaFw0x ODExMDYxMDAxNDVaMCIxIDAeBgNVBAMTF2R5d2Z0cC5jc2llLmN5dXQuZWR1LnR3 MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArWXj2nHoh4TmKUgtr12a /mgll/jh/jXHfybdL2GOuKs51I2bz7BWZB8X2jTYk6QKSQnk558wbAp6GoXGSMF2 nBcLcAO++fTGNaZ/U2JNl0CPAk1X/WmyFSGXGIDt3/GXEA/h8mtvjzEnloI7PnQC Vmh+++yPmIzJ4ma++DhCp3Yd77dVWOxi/NUbQftoK2fMoCycz4yce42Tyx2sQZFS 1Fhobtx+nx74nf6ulCd47uZnHHUt1ZtSe4n4ZrFhRj6wJo+FLYuVoiC2aGOYPZ6G xA6fhvnlNebQvqCwaPclsaVB8I3J8P5qMXeuhyW9hxp9IgzdCqeiFPPPc73LGfYM awIDAQABo4IDHzCCAxswDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUF BwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRqqSf6Gl1n/tEC FqH/KhnB2msn6jAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggr BgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRz ZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRz ZW5jcnlwdC5vcmcvMCIGA1UdEQQbMBmCF2R5d2Z0cC5jc2llLmN5dXQuZWR1LnR3 MIH+BgNVHSAEgfYwgfMwCAYGZ4EMAQIBMIHmBgsrBgEEAYLfEwEBATCB1jAmBggr BgEFBQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwgasGCCsGAQUFBwIC MIGeDIGbVGhpcyBDZXJ0aWZpY2F0ZSBtYXkgb25seSBiZSByZWxpZWQgdXBvbiBi eSBSZWx5aW5nIFBhcnRpZXMgYW5kIG9ubHkgaW4gYWNjb3JkYW5jZSB3aXRoIHRo ZSBDZXJ0aWZpY2F0ZSBQb2xpY3kgZm91bmQgYXQgaHR0cHM6Ly9sZXRzZW5jcnlw dC5vcmcvcmVwb3NpdG9yeS8wggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdQDBFkrg p3LS1DktyArBB3DU8MSb3pkaSEDB+gdRZPYzYAAAAWUZMyE4AAAEAwBGMEQCICfE L3jpmB7KaqTDsnejQyAngaGLdo92hDffKFKbXIy3AiBVZjbtVjy/HleAWpNSdwMu B0WBdm40LdbIkCJPqbW/7QB3ACk8UZZUyDlluqpQ/FgH1Ldvv1h6KXLcpMMM9OVF R/R4AAABZRkzISwAAAQDAEgwRgIhANDNpmsPK1hx5N6ArhQkDShJx/8OuAfwc9a0 5ReS8njcAiEA7hDTvQ3UzDByjIXzG3WusMjdr1usZEEiLGjjJpSiQJowDQYJKoZI hvcNAQELBQADggEBAH1MQA1MqaNLyymhCt4T5udh9r6UB5KcrFbN8Z0+g1OUROit fLLviKZMdfgRFMcg1JDADj4yfkQl0eUwNgg44K6MqNqjsx5nBU94McEHwdOFTAbj l4FGdvIDOVvogZzoIjkkZk40c50IKaoozpRxa2S6KodFb2WsoEUxv7FcXAsvn6wj AgBB9kU9kYDb+LTgKcjr9d85Y3TLdhenjpax89roce0p0D0BlSTK2DniIAZ0CNvZ touwf50m//cd0McSJHaPEkyuiCog8ZxzhxFUT+tltpAeyUZ7Hg+TVGYDrWFumPg3 FdHYtscQVm7LdjBvPQD42+ta+gYY/j+6DGHhZ1E= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArWXj2nHoh4TmKUgtr12a /mgll/jh/jXHfybdL2GOuKs51I2bz7BWZB8X2jTYk6QKSQnk558wbAp6GoXGSMF2 nBcLcAO++fTGNaZ/U2JNl0CPAk1X/WmyFSGXGIDt3/GXEA/h8mtvjzEnloI7PnQC Vmh+++yPmIzJ4ma++DhCp3Yd77dVWOxi/NUbQftoK2fMoCycz4yce42Tyx2sQZFS 1Fhobtx+nx74nf6ulCd47uZnHHUt1ZtSe4n4ZrFhRj6wJo+FLYuVoiC2aGOYPZ6G xA6fhvnlNebQvqCwaPclsaVB8I3J8P5qMXeuhyW9hxp9IgzdCqeiFPPPc73LGfYM awIDAQAB -----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 417078086652463692639538503861868973866471 . . . . . . . . [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 2018-08-08 10:01:45 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-11-06 10:01:45 +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 'dywftp.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 21889470616361592818299484681734988060715940361527677489042733865734134968885638042374926367834074796575191839148952849100592363009418281136577221597331332035972406134907126484405830688114894846161114901414821858015304986456521657226154829381535039188514272445185631843190640579388262656640010160582060928563298466535509184177403710074085983780328465856454912525498919275250107481812542381142741637837993077377471947314862887279566380062959181249758526976573389483872142828591419798879174562241141288014669594178573160748783549698761690469611297268667118671402517367173651829163493251233461882452970964413539065138283 . . . . . . . . . . . . . . . . . . . . [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) 6aa927fa1a5d67fed10216a1ff2a19c1da6b27ea . . . . . . . . . . . . . . . . [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 (27 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'dywftp.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [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) 00f0007500c1164ae0a772d2d4392dc80ac10770d4f0c49bde991a4840c1fa075164f6336000000165193321380000040300463044022027c42f78e9981eca6aa4c3b277a343202781a18b768f768437df28529b5c8cb70220556636ed563cbf1e57805a935277032e074581766e342dd6c890224fa9b5bfed007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001651933212c0000040300483046022100d0cda66b0f2b5871e4de80ae14240d2849c7ff0eb807f073d6b4e51792f278dc022100ee10d3bd0dd4cc30728c85f31b75aeb0c8ddaf5bac6441222c68e32694a2409a . . . . [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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