www.cs.tcu.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:89:84:22:30:b0:6b:10:2b:8a:56:c3:a9:50:8c:8b:25:d4 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=www.cs.tcu.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:89:84:22:30:b0:6b:10:2b:8a:56:c3:a9:50:8c:8b:25:d4Serial Number (int): 395243463616279307182608954791905039427028
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 2e:37:f8:64:77:60:1e:45:13:5b:b0:5e:71:26:65:5a:a3:d1:d2:b5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 8f:68:0b:99:6f:c9:5d:a6:c9:08:0a:ca:5e:53:9b:94:93:16:f7:40
Fingerprint (sha256): 50:2d:b8:69:dd:0c:ea:09:10:b9:56:50:31:f7:60:25:10:67:fe:38:af:26:b2:03:ad:32:5b:7b:68:4c:88:29
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.cs.tcu.ac.jp
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.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
www.cs.tcu.ac.jp
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Certificate
The complete raw certificate details for www.cs.tcu.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGDTCCBPWgAwIBAgISBImEIjCwaxArilbDqVCMiyXUMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA3MzExNzAwMDVaFw0x ODEwMjkxNzAwMDVaMBsxGTAXBgNVBAMTEHd3dy5jcy50Y3UuYWMuanAwggEiMA0G CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDIlb3M6ObX3X0H6za1AwDeFifgdFwE b6KvoJtjSe8PNV80t5SLUXJV3oj58Pwp7lH5roetp/6vlqYHilXvPv1ABE/hncNi /U8XP3wu/ER9+C4E+oQXeQloVI5myI/dy/oxte7sOIZBiJyL2ObQufkS2N+/gZMx mTJx0cgqATgquKe5DkdBdLbqzvha1Aa7BLsh9u47Q87qhDTi06bNUNZAlmLyWpKT OE+v05+bEhWQUZiLLNXdQCMykKPvDFzNFxWBvyo7PO2obw4bAiD1kegEmY3ZVVbw r0i4WPsaIMqXT1P7NcGv2bPsUTFQHO0WPjVw4DWHw5QDK+19Ttd6IQfdAgMBAAGj ggMaMIIDFjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsG AQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFC43+GR3YB5FE1uwXnEmZVqj 0dK1MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEB BGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0 Lm9yZy8wGwYDVR0RBBQwEoIQd3d3LmNzLnRjdS5hYy5qcDCB/gYDVR0gBIH2MIHz MAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6 Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2Vy dGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0 aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUg UG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRv cnkvMIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcAKTxRllTIOWW6qlD8WAfUt2+/ WHopctykwwz05UVH9HgAAAFk8X9AQAAABAMASDBGAiEAxn45PBM4ejqJMsOjDXN7 gbqG4YThWYE482OK0sVNHcICIQCnpFvkYMrP+POBVchJf8D7Ljj5W6J/FtarC3yk Yg6qLAB3AG9Tdqwx8DEZ2JkApFEV/3cVHBHZAsEAKQaNsgiaN9kTAAABZPF/QIEA AAQDAEgwRgIhAJMgzGtlKCJSVnC1oiChyC6o6drY97H5BreJD6uuUlZYAiEA5qc9 xR/VDSpCG5ZLbiKKiuqNa3ef1trtS4sklS+/++gwDQYJKoZIhvcNAQELBQADggEB AFO0nyz+5FXm0RFkB96kwpXtL11S5w+4UCumWCZvTZu+MCxBvEYUKRawVHsCngVe ugyc6+T92QhI4Nn4zT4Xcy77hQonK+E8nj9ATynArr0mohbp7H5YZELDOeYJy0Im s6YeF7RyUmtvOLRmRq/nfUqiCu7q4ikGbpFV7aZJScG1h2LupvV1ht4H9mmnmXRu Ydwyyrkt56tQZOMen/3r65M/BdzMR74G1xqsYvk2P1edaLpS8H2MOPICGdVMHB5q u0PBQgHbB1qqKvLAZwgirR6E0wK8BmhHXdYjH1Mk8uhC0ysv/hx269WGF4KI5VNI /wlYfMn4DXzE9YAQc3tNmiY= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyJW9zOjm1919B+s2tQMA 3hYn4HRcBG+ir6CbY0nvDzVfNLeUi1FyVd6I+fD8Ke5R+a6Hraf+r5amB4pV7z79 QARP4Z3DYv1PFz98LvxEffguBPqEF3kJaFSOZsiP3cv6MbXu7DiGQYici9jm0Ln5 Etjfv4GTMZkycdHIKgE4KrinuQ5HQXS26s74WtQGuwS7IfbuO0PO6oQ04tOmzVDW QJZi8lqSkzhPr9OfmxIVkFGYiyzV3UAjMpCj7wxczRcVgb8qOzztqG8OGwIg9ZHo BJmN2VVW8K9IuFj7GiDKl09T+zXBr9mz7FExUBztFj41cOA1h8OUAyvtfU7XeiEH 3QIDAQAB -----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 395243463616279307182608954791905039427028 . . . . . . . . [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 2018-07-31 17:00:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-10-29 17:00:05 +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 'www.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 25321501233522983609640094945327309410981899026345149803505759550623475444068034497424796924090741112776956144032449508799520384759415642105312523386298259016618520718744668517988645834985161238022115844996073282906150384658084173167089582942367276879424193434789561081749170552152933946663627560540387438212927404162655332561766004019155208933786947065233059463170819050203723551805010580429328028227207771337452064343139568770309814002302815033421551211587281723766095984312108848224727202047917122689066961968541510595156426330533848803325040369212911659931058546694584771674539333616600332157272543549429576173533 . . . . . . . . . . . . . . . . . . . . [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) 2e37f86477601e45135bb05e7126655aa3d1d2b5 . . . . . . . . . . . . . . . . [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 (20 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.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 (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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000164f17f40400000040300483046022100c67e393c13387a3a8932c3a30d737b81ba86e184e1598138f3638ad2c54d1dc2022100a7a45be460cacff8f38155c8497fc0fb2e38f95ba27f16d6ab0b7ca4620eaa2c0077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000164f17f408100000403004830460221009320cc6b652822525670b5a220a1c82ea8e9dad8f7b1f906b7890fabae525658022100e6a73dc51fd50d2a421b964b6e228a8aea8d6b779fd6daed4b8b24952fbffbe8 . . . . [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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