ebook.meisei-u.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:5d:b6:1a:0c:b9:3f:7e:7f:fe:64:55:8d:60:15:3c:3b:bf was issued on by Let's Encrypt.
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=ebook.meisei-u.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:5d:b6:1a:0c:b9:3f:7e:7f:fe:64:55:8d:60:15:3c:3b:bfSerial Number (int): 293225172671944969430016581560794127023039
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 5a:51:84:02:47:5e:0b:48:d5:43:be:6e:ba:6c:7a:e5:3f:35:d5:0f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 12:29:aa:2c:34:7c:e7:d2:d8:f5:e5:be:6e:29:5b:a4:46:e0:e4:98
Fingerprint (sha256): 41:00:f9:5d:63:bc:0d:c2:e7:22:c0:3a:03:d6:40:63:a8:cf:9d:35:d9:97:55:b0:f7:2d:94:a3:f4:c4:30:5d
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate ebook.meisei-u.ac.jp
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for ebook.meisei-u.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
ebook.meisei-u.ac.jp
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Certificate
The complete raw certificate details for ebook.meisei-u.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFYDCCBEigAwIBAgISA122Ggy5P35//mRVjWAVPDu/MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAzMzExOTAyMDVaFw0y MDA2MjkxOTAyMDVaMB8xHTAbBgNVBAMTFGVib29rLm1laXNlaS11LmFjLmpwMIIB IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzvv6nUvWoD0NwCykQiLUo3Mg EEyDWmotBS0DRQfE/+abnxj3yCqpwSdppx6WyJOn/yluVhsTBYCuRctslcYfi6B6 XA85kfKJSHz8tFNuMiCH+ck1KCavwnR+fZHPs4JAlqnyHEMST1Ko+N/spiCLhB0h QX+8sB3k0U9sgsz9tbcY3PAtUeyGR5SsuCPVrDdcQCLkx81dQLCi62eG/6vIqpwR JxvB8W2GuN0+vRWDNlIvZHDCppoe7jkbcalvmXi462YnfgYoHSUrUp+JRD4oIZVX r9tv43zCpfh922WGNWC/2J46P1YUIL3KO5SWjiKduMhGMgauZi2CxiE70M4UvwID AQABo4ICaTCCAmUwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMB BggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRaUYQCR14LSNVDvm66 bHrlPzXVDzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEF BQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5j cnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5j cnlwdC5vcmcvMB8GA1UdEQQYMBaCFGVib29rLm1laXNlaS11LmFjLmpwMEwGA1Ud IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDw AHYAsh4FzIuizYogTodm+Su5iiUgZ2va+nDnsklTLe+LkF4AAAFxMi/LKAAABAMA RzBFAiEAj5BNTW0pBrWD83mBRp6Xb6ozqcvlRn7J6lmm9tkIcpACIGwP9eaNHn22 da6zo+PuM7Rqdh0jO++CQhFM6tQbfkh9AHYAb1N2rDHwMRnYmQCkURX/dxUcEdkC wQApBo2yCJo32RMAAAFxMi/M2gAABAMARzBFAiAU6tekYqb0xNpfumICPZkMsakA DD1FlEC66u33Ho7RAwIhALD2U+EMc6MZNRFmVZCBf6h9N/+h4PiM71oBArvD/mXm MA0GCSqGSIb3DQEBCwUAA4IBAQAyYVXb+hrQ1PAM3iA8WpABZv9ZN7uyPE5muZei AQdmHCXd66G1zkKWE2+cPtN8DVlSjlnZ1r+97Y0B09J/hPfSRTv0On79kEMI7QBp 2B6ivKzpunDCazixz2YTxnnL2w1jzyGDkztpmMHztOnWgjJtaMUIMyAqJgG8bT+S 8LSa7cGdv87EArShi6ErYjOF9Lu+QfF2xrQHgaFPGuzY2gLaYlb8+mpHl3GO2lTv h9RX54DBRHLmhUni9bvClEtAlHuK9AALgyneZ7FZpj6IAD0a3VPcCEVV+uJ6Ky9V AKD4S2GsfC/cmoyVSwK7lZACkfTbStmwByi8WKttj3yGAL4R -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzvv6nUvWoD0NwCykQiLU o3MgEEyDWmotBS0DRQfE/+abnxj3yCqpwSdppx6WyJOn/yluVhsTBYCuRctslcYf i6B6XA85kfKJSHz8tFNuMiCH+ck1KCavwnR+fZHPs4JAlqnyHEMST1Ko+N/spiCL hB0hQX+8sB3k0U9sgsz9tbcY3PAtUeyGR5SsuCPVrDdcQCLkx81dQLCi62eG/6vI qpwRJxvB8W2GuN0+vRWDNlIvZHDCppoe7jkbcalvmXi462YnfgYoHSUrUp+JRD4o IZVXr9tv43zCpfh922WGNWC/2J46P1YUIL3KO5SWjiKduMhGMgauZi2CxiE70M4U vwIDAQAB -----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 293225172671944969430016581560794127023039 . . . . . . . . [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 2020-03-31 19:02:05 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-29 19:02:05 +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 'ebook.meisei-u.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 26129346280555214386964095892960180115117224361158050128224629733232484005089948393334140160129031332800010278191384079964757009146631981712778969263923103217161596212425124895251375629749974603382448491621405172801408848361820730785891949843529062415191466788773532605338935838774451101353741620901148571714643010634859212857967354192694518805598385432358978674810539170362872182471596481179696422542373652060207376037180339092893833804977055390645441010064569406150848301547948590652056834529959997697008813189044654043878161352272049363475686549248813592471783611422778959546410870891280620484761733486465606620351 . . . . . . . . . . . . . . . . . . . . [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) 5a518402475e0b48d543be6eba6c7ae53f35d50f . . . . . . . . . . . . . . . . [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 (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ebook.meisei-u.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) 00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000171322fcb2800000403004730450221008f904d4d6d2906b583f37981469e976faa33a9cbe5467ec9ea59a6f6d908729002206c0ff5e68d1e7db675aeb3a3e3ee33b46a761d233bef8242114cead41b7e487d0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000171322fccda0000040300473045022014ead7a462a6f4c4da5fba62023d990cb1a9000c3d459440baeaedf71e8ed103022100b0f653e10c73a3193511665590817fa87d37ffa1e0f88cef5a0102bbc3fe65e6 . . . . [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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