www.aviation.u-tokyo.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:e6:e8:c9:02:7e:e3:bc:b8:ad:23:e5:e9:b1:94:4f:86:42 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.aviation.u-tokyo.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:e6:e8:c9:02:7e:e3:bc:b8:ad:23:e5:e9:b1:94:4f:86:42Serial Number (int): 339911226784405301450808362653494671279682
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: ea:16:d3:2e:5e:60:11:0f:80:9e:69:bf:f1:0e:a2:7f:62:f2:d5:03
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): fc:5a:d6:0e:a9:3c:ab:31:ec:93:23:c4:44:27:22:aa:de:d4:74:19
Fingerprint (sha256): 04:b4:66:71:25:eb:0a:fb:12:ac:fc:fb:eb:17:a4:f0:76:73:f7:3a:41:68:50:54:35:c5:4f:7c:34:e0:6c:3f
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.aviation.u-tokyo.ac.jp
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.aviation.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
www.aviation.u-tokyo.ac.jp
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Certificate
The complete raw certificate details for www.aviation.u-tokyo.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFbTCCBFWgAwIBAgISA+boyQJ+47y4rSPl6bGUT4ZCMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMTQxNzA0MTVaFw0y MDA0MTMxNzA0MTVaMCUxIzAhBgNVBAMTGnd3dy5hdmlhdGlvbi51LXRva3lvLmFj LmpwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2wTQcqYJjVl3KuIG aNmRfRWVcOhxcsgLszEEA0Zcmq6X1o2uhfL3ksQjqV1e/mdBOjuxKZbSCphZU5WJ 6FhLObiYKx80TIuCwmOlPMu9f5sPQmiOqaeP2H74omQZjAe+tHbaXOCSz5K/hCuA lVnL+4n7IQr8YTh1kEKtBTNFYvhnNj3XMNVrys9CItywe9B6ffdIg4tM3mqj+w1E Nz2jgjcg7Febuj6uPzRiccmvN71bSbIQSYAbk+lqlpU6N/CCGDwqyjHHhAtjSsMP I/l9U2oX78KWNICssQpWLmdY3nFWXETvFd44UrlPFYR2pwIIJeHXMSUr819TKYCX 6lA+pwIDAQABo4ICcDCCAmwwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsG AQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBTqFtMuXmAR D4Ceab/xDqJ/YvLVAzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBv BggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5s ZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5s ZXRzZW5jcnlwdC5vcmcvMCUGA1UdEQQeMByCGnd3dy5hdmlhdGlvbi51LXRva3lv LmFjLmpwMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYI KwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHW eQIEAgSB9gSB8wDxAHYAXqdz+d9WwOe1Nkh90EngMnqRmgyEoRIShBh1loFxRVgA AAFvpTo+TQAABAMARzBFAiEA6Vz2K/Br9ilPjStHEM8QhTv4zWoTz6A/FezGYNPn cDoCIEK+zKSpWPzo3LmPMxZ3aGTC3YtXIsNHDFt5aU41i/s5AHcAB7dcG+V9aP/x sMYdIxXHuuZXfFeUt2ruvGE6GmnTohwAAAFvpTo+bAAABAMASDBGAiEAku4/W3qi HY8XisFQx3ajqrGz9C+ED2SLUpw0t2pocWwCIQDo0ZK0o9wxyt3xHlNpQU/SuD1S kypetpiZ4J+sInSyKzANBgkqhkiG9w0BAQsFAAOCAQEAieZhejxGDKEH5SeQq9hW +j+e6VaRexA6+v4wz36URyFGb4T8mlRIGDIXk5Wx/yHCVlHngIz7jh3N2fk4ccUk K4BPK/5/Gl4tdE/C2vkac7123f9QIl/VFacllqCPw8yI6EBl7gk0YIEOdnN3vXVn P6ZBrgb8NI0/hXSwYe2m3+ZCsECJPqydktlBW6PgGK9gkQK6Sk3FJs+U9AYmFn7X v4DkycuGGpXuDcPjhexL23fflA8sV8Ev4dGVbwyNt76NebiPXARuSD74gXZLK5op I1rSO9bgvjk8zXBVWmMx1xmEC0TxQp45IGu8FWXcJonqmcETmZ/ljz/p5xwsig2h oA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2wTQcqYJjVl3KuIGaNmR fRWVcOhxcsgLszEEA0Zcmq6X1o2uhfL3ksQjqV1e/mdBOjuxKZbSCphZU5WJ6FhL ObiYKx80TIuCwmOlPMu9f5sPQmiOqaeP2H74omQZjAe+tHbaXOCSz5K/hCuAlVnL +4n7IQr8YTh1kEKtBTNFYvhnNj3XMNVrys9CItywe9B6ffdIg4tM3mqj+w1ENz2j gjcg7Febuj6uPzRiccmvN71bSbIQSYAbk+lqlpU6N/CCGDwqyjHHhAtjSsMPI/l9 U2oX78KWNICssQpWLmdY3nFWXETvFd44UrlPFYR2pwIIJeHXMSUr819TKYCX6lA+ pwIDAQAB -----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 339911226784405301450808362653494671279682 . . . . . . . . [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 2020-01-14 17:04:15 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-13 17:04:15 +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 'www.aviation.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 27648562782425262459293063223715367719300183985457999672118366798781442445068923964108175825399415719651557354947024593797090092216104844014745708057995238210129422984719990489758892204319721968797202024467075939029101328511586625957660166520132717555604065835324758947465646673178590540883501918569964886718454627237579128935892678014104188835590017446929598718706975019801398020575525976060517952928128939870007080791789356651469327314640661171803956959088419368321327129884132807218615695796273217378101342976086221112473157258672559703699500291595576722571020510922954199335442500207024698962567296554164984757927 . . . . . . . . . . . . . . . . . . . . [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) ea16d32e5e60110f809e69bff10ea27f62f2d503 . . . . . . . . . . . . . . . . [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 (30 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.aviation.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) 00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016fa53a3e4d0000040300473045022100e95cf62bf06bf6294f8d2b4710cf10853bf8cd6a13cfa03f15ecc660d3e7703a022042becca4a958fce8dcb98f3316776864c2dd8b5722c3470c5b79694e358bfb3900770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fa53a3e6c000004030048304602210092ee3f5b7aa21d8f178ac150c776a3aab1b3f42f840f648b529c34b76a68716c022100e8d192b4a3dc31caddf11e5369414fd2b83d52932a5eb69899e09fac2274b22b . . . . [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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