vgl.cs.tcu.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:56:26:dd:2a:e9:79:55:ef:e2:b9:76:3f:82:dc:37:46:67 was issued on by Let's Encrypt.
With 8 subject alternative names this certificate can be used to secure multiple fqdn's. 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=vgl.cs.tcu.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:56:26:dd:2a:e9:79:55:ef:e2:b9:76:3f:82:dc:37:46:67Serial Number (int): 290652800382285927594702880621864412464743
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 83:09:ce:60:f3:d6:41:06:48:2c:3a:fb:b3:64:95:3a:14:2c:8f:a2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): fe:b4:16:46:cb:ae:1e:98:eb:92:15:20:a5:62:6e:6c:17:05:5a:41
Fingerprint (sha256): 18:9f:88:77:6c:58:d9:d2:79:82:04:fe:18:11:39:9c:29:f7:a2:a0:d4:26:33:cd:59:bb:77:89:56:3b:c2:4f
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate vgl.cs.tcu.ac.jp
8
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for vgl.cs.tcu.ac.jp
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
cherry.vgl.cs.tcu.ac.jp
imap.vgl.cs.tcu.ac.jp
mail.vgl.cs.tcu.ac.jp
pop3.vgl.cs.tcu.ac.jp
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viplab.vgl.cs.tcu.ac.jp
www.vgl.cs.tcu.ac.jp
imap.vgl.cs.tcu.ac.jp
mail.vgl.cs.tcu.ac.jp
pop3.vgl.cs.tcu.ac.jp
smtp.vgl.cs.tcu.ac.jp
vgl.cs.tcu.ac.jp
viplab.vgl.cs.tcu.ac.jp
www.vgl.cs.tcu.ac.jp
Other certificates including the domain name tcu.ac.jp
(limited to 100 certificates)
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lecture.vm.cs.tcu.ac.jp
ufinity03.jp.fujitsu.com
vgl.cs.tcu.ac.jp
apuer.tcu.ac.jp
www.tcu.ac.jp
Certificate
The complete raw certificate details for vgl.cs.tcu.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF/zCCBOegAwIBAgISA1Ym3SrpeVXv4rl2P4LcN0ZnMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA5MzAwNjAxNTlaFw0x OTEyMjkwNjAxNTlaMBsxGTAXBgNVBAMTEHZnbC5jcy50Y3UuYWMuanAwggEiMA0G CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDDa84MFpObAJyzvFX22jRP/BSulRVi f1JG98iwq0MQ2FfFoabOTQ57JYwDpdVirVLPASyI43AUbo/IWGW5Lv+B7sfqmvap Ts1VbcuSoRjGYMtbUHpC/t8SuCzacPSUe/QhN0lbAXkeVzgkBpyu10+OzSl6J6Ed sZqSEckJlmw8JoXZY5MDxUdc5KAfBGUj9O1nwzXc51dCa8yAAXmE49n7VfFVbn6D V/nQ31Ne03wj4tTFz2PbPlKRj3G27huvdhnyyUlDMgP1gSP7zhSiEYnMKaGqo70q 09uLNiZ1E1uyGWb1KkBtHuh9/8uUKL3S2AUEkN/J66qQeGE+b9jDZ1iFAgMBAAGj ggMMMIIDCDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsG AQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFIMJzmDz1kEGSCw6+7NklToU LI+iMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEB BGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZy8wgcEGA1UdEQSBuTCBtoIXY2hlcnJ5LnZnbC5jcy50Y3UuYWMuanCCFWlt YXAudmdsLmNzLnRjdS5hYy5qcIIVbWFpbC52Z2wuY3MudGN1LmFjLmpwghVwb3Az LnZnbC5jcy50Y3UuYWMuanCCFXNtdHAudmdsLmNzLnRjdS5hYy5qcIIQdmdsLmNz LnRjdS5hYy5qcIIXdmlwbGFiLnZnbC5jcy50Y3UuYWMuanCCFHd3dy52Z2wuY3Mu dGN1LmFjLmpwMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgw JgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYB BAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI+6SPKJMBnd3x 2/4AAAFtgPnVIQAABAMARzBFAiAq7KhacLb4Twwlf+77X5swrRtnxJuKGkG8fvf2 IfXCRQIhAN6gfmXjBpwfNduDaTgbrTMf+ogcLIFQ1vpC9ea8gbmuAHYAKTxRllTI OWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFtgPnVFQAABAMARzBFAiEA+kkt KwfKAPp/K37LRcIk5Xs8OwdPpNgNTCfCZ070hyICICN7WgKOgrZtGdM9TlqScD9X 3L9RDiMdwfcZEQ9kVW0OMA0GCSqGSIb3DQEBCwUAA4IBAQAfBSxbpUlD2vxECjjn b2tCv7POET4yqWPytYCyemeAEIwaCjVD1MWc+ta8snH18kaGUS1QibUnlgoxCFLu DaU9bNyzYF/igFMV8brO2rRJIOBlB+Xfx/KYMi5VVNozHVBpULZ95AfCszd7TZzk UVE6YyU23XyVi5pIe6J11bllGXyaXbxL9/pJi2LkM5zEiTPopB4T32+creu115wK nlowrvf/mXmC6rwfrtkyxSV93LfuH4ZsVdSE0YMpMpLKkHnKkvuXYFmlmzosOFtH EMc6/zeyz828vTTJZnJxL+RB5mCOSQD7pIy/3bNG1enB0HxVXhxL/ioTJ60F6cE+ 71vR -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw2vODBaTmwCcs7xV9to0 T/wUrpUVYn9SRvfIsKtDENhXxaGmzk0OeyWMA6XVYq1SzwEsiONwFG6PyFhluS7/ ge7H6pr2qU7NVW3LkqEYxmDLW1B6Qv7fErgs2nD0lHv0ITdJWwF5Hlc4JAacrtdP js0peiehHbGakhHJCZZsPCaF2WOTA8VHXOSgHwRlI/TtZ8M13OdXQmvMgAF5hOPZ +1XxVW5+g1f50N9TXtN8I+LUxc9j2z5SkY9xtu4br3YZ8slJQzID9YEj+84UohGJ zCmhqqO9KtPbizYmdRNbshlm9SpAbR7off/LlCi90tgFBJDfyeuqkHhhPm/Yw2dY hQIDAQAB -----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 290652800382285927594702880621864412464743 . . . . . . . . [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 2019-09-30 06:01:59 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-29 06:01:59 +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 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'vgl.cs.tcu.ac.jp' . . . . . . . . [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 24669630032061879232063247852346605939044846121415176322802248836290161425148615578034672944580925110736684250862741629496426294427712407514388453704629988211784499455894489720370776220845655202556525726095274390788969075281468729616668283230855010475394646966803371468172420825000016652720924275485144159350765576823290047120578547058359005124837844074222376840874137976846806810249911637077085260842345177668568268095691705471698071510960948592290986068790400037061327985523142402012731270685458159104256566314837483668276973081787550584612578695262821928925431084771558661497397413454569304926755070595073799837829 . . . . . . . . . . . . . . . . . . . . [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) 8309ce60f3d64106482c3afbb364953a142c8fa2 . . . . . . . . . . . . . . . . [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 (185 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cherry.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'imap.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pop3.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'smtp.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'viplab.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.vgl.cs.tcu.ac.jp' . . . . . . . . . . . . . . . . [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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016d80f9d521000004030047304502202aeca85a70b6f84f0c257feefb5f9b30ad1b67c49b8a1a41bc7ef7f621f5c245022100dea07e65e3069c1f35db8369381bad331ffa881c2c8150d6fa42f5e6bc81b9ae007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d80f9d5150000040300473045022100fa492d2b07ca00fa7f2b7ecb45c224e57b3c3b074fa4d80d4c27c2674ef487220220237b5a028e82b66d19d33d4e5a92703f57dcbf510e231dc1f719110f64556d0e . . . . [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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