www.aml.t.u-tokyo.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:fc:e7:14:31:27:3c:c2:01:46:f8:c2:4f:01:77:58:35:7e was issued on by Let's Encrypt.
With 2 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=www.aml.t.u-tokyo.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:fc:e7:14:31:27:3c:c2:01:46:f8:c2:4f:01:77:58:35:7eSerial Number (int): 347395170769267491551053459047365744276862
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 93:89:8e:19:ce:55:62:b7:f7:20:97:95:31:5b:f8:51:91:4c:cb:99
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f0:7e:c1:b3:00:b8:63:7e:c9:05:43:67:34:cd:54:e6:c3:58:eb:11
Fingerprint (sha256): 01:24:bc:e6:85:5c:4c:80:aa:80:36:66:50:33:d4:ce:00:19:9d:9f:0b:7d:d5:b5:d4:64:11:a6:b0:d4:dc:d3
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.aml.t.u-tokyo.ac.jp
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.aml.t.u-tokyo.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
aml.t.u-tokyo.ac.jp
www.aml.t.u-tokyo.ac.jp
www.aml.t.u-tokyo.ac.jp
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Certificate
The complete raw certificate details for www.aml.t.u-tokyo.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFfDCCBGSgAwIBAgISA/znFDEnPMIBRvjCTwF3WDV+MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTExMjYxNzAyMDhaFw0y MDAyMjQxNzAyMDhaMCIxIDAeBgNVBAMTF3d3dy5hbWwudC51LXRva3lvLmFjLmpw MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw/oGCOQjr0rijQgt9FFG iEnHHYw2mQ6THtLQzWZv2iYf4Ln/Im8xtVZVZz17uf4B8kRbITuVHy3LEpXws8Qu 1DuXQRK1L+GrLPM3RBo3KBCWlUE8fs0WYxUH/27wnoLaFTgem2wl49cQEz/LhsHw 9k0p0zuReY7MaBsHmP4BxGYuQvGLGLNLEDUMgxK2s/KXkBxquYcrf29UeMpNHS0W yAcykw1I/ldSIV3AN+NBeJaSKk5dw2YjTaW9jmk7XaTzSopt/tgJ5SQqqmfuoAOs E8T5LMt2ldnF1ukduOZfVM+T68XjWZ6jsYjbTitWVJ8ihU3wBGEEtKofFEuqcufC gwIDAQABo4ICgjCCAn4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUF BwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSTiY4ZzlVit/cg l5UxW/hRkUzLmTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggr BgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRz ZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRz ZW5jcnlwdC5vcmcvMDcGA1UdEQQwMC6CE2FtbC50LnUtdG9reW8uYWMuanCCF3d3 dy5hbWwudC51LXRva3lvLmFjLmpwMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysG AQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQu b3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcAXqdz+d9WwOe1Nkh90EngMnqR mgyEoRIShBh1loFxRVgAAAFuqOC0CwAABAMASDBGAiEAjFRPROdrgv0/axDxAe2O B5ppqrkH7CjOR7wl32IE7X0CIQCfQ3kazGJFfBR8ROxyeoKoqdOOr3+UTeiOqocU Ju7B9gB2ALIeBcyLos2KIE6HZvkruYolIGdr2vpw57JJUy3vi5BeAAABbqjgs+oA AAQDAEcwRQIhAPUlOswbqMTmP+ksVPkioOtruUuyYkbBQsEn9X3Nfi9YAiB/WXQ6 US19MqYFu6+GBr3TNYALgQYxW9xHO527bAThOzANBgkqhkiG9w0BAQsFAAOCAQEA GQ02C5FMquDUntmfnQdAHPNVgJG1V76mUPfOXxqrz+ChFyGrGwBpY1zBwQHFyU7a ltmlRCRorlQEr2L+wZV4pg6e3N7xwutElhy0DpOHVf+7RuWYoSal9EZujcWEZ+UD jayQvNHT5lGC+rAOTJV+XqwN6ck+LcLR66x5La7zj1jnUTPlIBpDSza3YliN9+UL s9qcl9Fu6XZynUEECfmU4tSRwG8rdEECkaXYpYNrv9N7+gmep7PkOcZzaTplO8Gt 2/vARBUhQLwZ1Yk20jeSSkeF8PS6IJ05etUgKUPN8rkuUSIHxgKHjYhuRrTxB6H4 a35j35DcJ8+NZkXqMxZ6PQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw/oGCOQjr0rijQgt9FFG iEnHHYw2mQ6THtLQzWZv2iYf4Ln/Im8xtVZVZz17uf4B8kRbITuVHy3LEpXws8Qu 1DuXQRK1L+GrLPM3RBo3KBCWlUE8fs0WYxUH/27wnoLaFTgem2wl49cQEz/LhsHw 9k0p0zuReY7MaBsHmP4BxGYuQvGLGLNLEDUMgxK2s/KXkBxquYcrf29UeMpNHS0W yAcykw1I/ldSIV3AN+NBeJaSKk5dw2YjTaW9jmk7XaTzSopt/tgJ5SQqqmfuoAOs E8T5LMt2ldnF1ukduOZfVM+T68XjWZ6jsYjbTitWVJ8ihU3wBGEEtKofFEuqcufC gwIDAQAB -----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 347395170769267491551053459047365744276862 . . . . . . . . [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 2019-11-26 17:02:08 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-24 17:02:08 +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.aml.t.u-tokyo.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 24739760687437471386152257225049979299523533875347653713570185523436565380600888091203853658009943604211622287234929583197698029861185944463683374101271026639775626632327893720277908348604891314400157857040531099335776465937302198900750728193992815856344856132102420594909429687083574163202039862169800583043060046516278761411740980426294046154068488073427964245540807087217560298392991377972397191413182475072052622971061085872655504778880978194637991890540444857950072362930161968226658412876564428377216943014678640957162093718650622415509007252589045464685611001462620267269670066606340465488198372120405534556803 . . . . . . . . . . . . . . . . . . . . [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) 93898e19ce5562b7f7209795315bf851914ccb99 . . . . . . . . . . . . . . . . [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 (48 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'aml.t.u-tokyo.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.aml.t.u-tokyo.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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f10077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ea8e0b40b00000403004830460221008c544f44e76b82fd3f6b10f101ed8e079a69aab907ec28ce47bc25df6204ed7d0221009f43791acc62457c147c44ec727a82a8a9d38eaf7f944de88eaa871426eec1f6007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ea8e0b3ea0000040300473045022100f5253acc1ba8c4e63fe92c54f922a0eb6bb94bb26246c142c127f57dcd7e2f5802207f59743a512d7d32a605bbaf8606bdd335800b8106315bdc473b9dbb6c04e13b . . . . [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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