webwork.math.is.tohoku.ac.jp

Issued by

About this certificate


This digital certificate with serial number 44:60:f0:b2:ae:16:2d:e2 was issued on by National Institute of Informatics .

While the 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.

Cerificate errors/warnings *beta

  • ERROR: Certificate contains no Authority Info Access Issuers
  • WARNING: Certificate contains unknown extension ([2.16.840.1.113730.1.1])
  • ERROR: stateOrProvinceName is required if organizationName is set

Tohoku University

Organization: Tohoku University
Organization unit: Graduate School of Information Sciences
Locality: Academe2
Country: JP

National Institute of Informatics

Organization: National Institute of Informatics
Organization unit: UPKI
Organization unit: NII Open Domain CA - G2
Locality: Academe2
Country: JP

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 44:60:f0:b2:ae:16:2d:e2
Serial Number (int): 4927202642558856674
Serial Number lenght: 63 bits, 8 octets

SubjectKeyId: d5:4f:90:35:72:fb:06:b5:fb:a8:1d:ce:62:3a:61:91:ae:17:7b:34
AuthorityKeyId: 7b:0a:07:f7:18:ca:8c:0e:d6:da:bc:50:80:6c:2c:47:02:d1:0d:fb

Fingerprint (sha1): d3:5e:4b:83:8d:09:37:e0:e6:9d:22:30:f0:4f:3d:15:36:69:2b:4a
Fingerprint (sha256): ca:68:69:11:02:51:40:68:e9:73:ec:f6:3d:9b:e9:c6:0b:74:b9:63:98:31:a3:0a:ce:fb:e4:fd:45:0f:0e:3c


Revocation information

CRL Distribution Point: http://repo1.secomtrust.net/sppca/nii/odca2/fullcrl.crl

Check the revocation status for the current certificate on webwork.math.is.tohoku.ac.jp
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details about this certificate


Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA1 with RSA



Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication

Extensions

8 extensions
No unhandled critical extensions



CA Certificate

This is not a CA certificate

Subject Alternative Names

This certificate doesn't contain any other subject alternative names besides the common name of the subject: webwork.math.is.tohoku.ac.jp

Certificate

The complete raw certificate details in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIE7jCCA9agAwIBAgIIRGDwsq4WLeIwDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UE BhMCSlAxETAPBgNVBAcTCEFjYWRlbWUyMSowKAYDVQQKEyFOYXRpb25hbCBJbnN0 aXR1dGUgb2YgSW5mb3JtYXRpY3MxDTALBgNVBAsTBFVQS0kxIDAeBgNVBAsTF05J SSBPcGVuIERvbWFpbiBDQSAtIEcyMB4XDTE0MDMyNzA3MTgwNVoXDTE2MDMyNTA3 MjgwNVowgZUxCzAJBgNVBAYTAkpQMREwDwYDVQQHEwhBY2FkZW1lMjEaMBgGA1UE ChMRVG9ob2t1IFVuaXZlcnNpdHkxMDAuBgNVBAsTJ0dyYWR1YXRlIFNjaG9vbCBv ZiBJbmZvcm1hdGlvbiBTY2llbmNlczElMCMGA1UEAxMcd2Vid29yay5tYXRoLmlz LnRvaG9rdS5hYy5qcDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANEi VrkyhO55eMox5nGbrRZTLYrv1mF1nyEcdIcQCz4kiCB+z6dVZTR1NG/BzXTdgkhO APnDv+Hvgr/5DvHiCMK1llgOgcsunMSukBj5KgXEWPh6VrdCDNyVGGBsXRnBBGSY ne3S22nQD3lpmvJjxj4B57t4dFPm5L5EP7KQtAWesdVsU5LNJ3oGffjp2mR8Brtl /1tYzwBbNlaKN1MLq852t9kytTp0C1WgwmgH//iqsxSlDgJYSrn7sajlI/fXc8+S VKpreEOpQFbaPk+UzNfHBHNS2yEiuEH7p67MsKvNyX5zPVL4QSr6reQLdE3MV1Zn uhnWP/L5nlupILS1hgsCAwEAAaOCAVcwggFTMA4GA1UdDwEB/wQEAwIFoDATBgNV HSUEDDAKBggrBgEFBQcDATAdBgNVHQ4EFgQU1U+QNXL7BrX7qB3OYjphka4XezQw HwYDVR0jBBgwFoAUewoH9xjKjA7W2rxQgGwsRwLRDfswJwYDVR0RBCAwHoIcd2Vi d29yay5tYXRoLmlzLnRvaG9rdS5hYy5qcDBmBgNVHSAEXzBdME0GCiqDCIycHgEC AgEwPzA9BggrBgEFBQcCARYxaHR0cHM6Ly9yZXBvMS5zZWNvbXRydXN0Lm5ldC9z cGNwcC9jcHMvaW5kZXguaHRtbDAMBgoqgwiMmxtkhwUBMEgGA1UdHwRBMD8wPaA7 oDmGN2h0dHA6Ly9yZXBvMS5zZWNvbXRydXN0Lm5ldC9zcHBjYS9uaWkvb2RjYTIv ZnVsbGNybC5jcmwwEQYJYIZIAYb4QgEBBAQDAgZAMA0GCSqGSIb3DQEBBQUAA4IB AQDKMO7GqKDONocQD4aZPkPDR0GSS1kDaB2kt43MR753XSz2xvMoxAIgXtUmIO8P +O1geT+otYlA0ppAaUfO376DA0xHkMGtaFVarFMkzMsLJaX5T0CNWoecn+yrT81e 4emBuJUrffHibRYaQh3z/o2+P+DmYmAELHZ7jXAkYnX0ipy9CCBsDDlrwx4pVONY HQtmLp9a3hNbO77cVYOnWCGwMWkfU/hc8EZ6BCqbzK/eLXwjA6zb/yZBZ3/56U2E rFHu/SBZPcGJOQuIr18GsSygSzK36XBlECd3u16lXnfwElSdJw0qXCIjPWeZgM0b 7j9kwKp7nhBsGZhtQMpyixYk -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0SJWuTKE7nl4yjHmcZut FlMtiu/WYXWfIRx0hxALPiSIIH7Pp1VlNHU0b8HNdN2CSE4A+cO/4e+Cv/kO8eII wrWWWA6Byy6cxK6QGPkqBcRY+HpWt0IM3JUYYGxdGcEEZJid7dLbadAPeWma8mPG PgHnu3h0U+bkvkQ/spC0BZ6x1WxTks0negZ9+OnaZHwGu2X/W1jPAFs2Voo3Uwur zna32TK1OnQLVaDCaAf/+KqzFKUOAlhKufuxqOUj99dzz5JUqmt4Q6lAVto+T5TM 18cEc1LbISK4Qfunrsywq83JfnM9UvhBKvqt5At0TcxXVme6GdY/8vmeW6kgtLWG CwIDAQAB -----END PUBLIC KEY-----

ASN1 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 4927202642558856674 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . . . . . [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 'JP' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Academe2' . . . . . . . . . . . . [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 'National Institute of Informatics' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'UPKI' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'NII Open Domain CA - G2' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2014-03-27 07:18:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-03-25 07:28:05 +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 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'JP' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Academe2' . . . . . . . . . . . . [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 'Tohoku University' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Graduate School of Information Sciences' . . . . . . . . . . . . [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 'webwork.math.is.tohoku.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 26400738813236820603299195641984980623430331002779519769732248325831897057381101965672820069239951135400824587370901231615893018960613305761895277707540222675585946652798930528129458002924132096661555333177807010785515825836458723859526193595344512798514738120087690412225468983062852554210821669886650475932394520789741850709819952864686640871736120702264924919763038749017911769786371567731244709973919906423208200718019660768823701298275132289415489419766669333067137500618958829348547836488735056267272590558292482818077353390219237729306400850750545557996461895381460616095213224822678495871650777010844271478283 . . . . . . . . . . . . . . . . . . . . [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 (12 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: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) d54f903572fb06b5fba81dce623a6191ae177b34 . . . . . . . . . . . . . . . . [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 7b0a07f718ca8c0ed6dabc50806c2c4702d10dfb . . . . . . . . . . . . . . . . [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 (32 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webwork.math.is.tohoku.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 (95 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.392.200222.1.2.2.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://repo1.secomtrust.net/spcpp/cps/index.html' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.392.200091.100.901.1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (65 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://repo1.secomtrust.net/sppca/nii/odca2/fullcrl.crl' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.840.1.113730.1.1 (netscape-cert-type) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2 bits) 0640 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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