rp.elt.net.it-chiba.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:91:f2:56:6e:74:02:17:72:95:c0:e9:8e:23:81:4e:ce:2a 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=rp.elt.net.it-chiba.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:91:f2:56:6e:74:02:17:72:95:c0:e9:8e:23:81:4e:ce:2aSerial Number (int): 310999922951582771348243939850264018603562
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 37:69:c3:0f:91:f8:a9:a0:2b:68:ab:db:91:66:23:4d:db:24:c2:24
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 60:eb:52:50:65:d4:fd:b6:63:a5:99:f8:ff:01:8e:ec:40:cb:81:82
Fingerprint (sha256): 42:61:33:28:3c:dd:a7:96:ba:64:5e:76:27:8b:37:29:02:15:3c:6c:b3:89:55:30:24:f7:6a:3a:31:66:f5:ad
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate rp.elt.net.it-chiba.ac.jp
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for rp.elt.net.it-chiba.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
rp.elt.net.it-chiba.ac.jp
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Certificate
The complete raw certificate details for rp.elt.net.it-chiba.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFajCCBFKgAwIBAgISA5HyVm50AhdylcDpjiOBTs4qMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MjAwMjIyMzZaFw0x OTA4MTgwMjIyMzZaMCQxIjAgBgNVBAMTGXJwLmVsdC5uZXQuaXQtY2hpYmEuYWMu anAwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDgzuI4C0MAaJKxH99w +36dFK2nGBgmogGysxEk0LMi1NS4hRaALT48y8jhw3bttK4lkYigmmJ6JI8VCNB6 uPgh0HARcGez59hLo9w8VYPTkzJ7DZ3vMeMgSYR3NKeydCnJsJ7GqgwfBCcnCpvM XFeWPxiaE1s0UCRVYGF4Ckk4BL8usQT47cfulB8wTBIiat2blZeemjz+5jA6NEmD fLkz05OZbAUmUUFf2cxd/OEbYgNhwq/AKyWD7iVW3JcQg5xQ1NiSnh3LeLFfTJJn mbutWnx5juPWLC2OgnM1UFnFoHsW2LJ0t6fGaRWO9H0tPMqtT8dAPdo4ydxY4PX8 E/7ZAgMBAAGjggJuMIICajAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFDdpww+R+Kmg K2ir25FmI03bJMIkMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wJAYDVR0RBB0wG4IZcnAuZWx0Lm5ldC5pdC1jaGliYS5h Yy5qcDBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkC BAIEgfUEgfIA8AB3AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAAB atNDLjkAAAQDAEgwRgIhAMlIst2z3Bo8UoA++5vo44MSoPEF3r89Llmdxvb2kvGQ AiEAqDeaAYSnRf7DYmBo/Qs9tOSeEwJIRvqtKVDJ7cpe+ScAdQBj8tvN6DvMLM8L coQnV2szpI1hd4+9daY4scdoVEvYjQAAAWrTQy4/AAAEAwBGMEQCIDaUG+yYCtQg HB/ximYbDlWBRGvigWxe289d+suYkY7xAiAd+ho5XdwLPRr+LpDYRvkJ6jBz+DyY K77emGuq3QOjIDANBgkqhkiG9w0BAQsFAAOCAQEAMkLtbnA1K6qgDh01n6ynLuUM O33sye92ydv3XN0MABLjRabYNgVC5CPeZTDQ+wQx8MQ6tkne6HjU8k7MTT4Ur/Uj +Kx9GusV8sqVvBMuPucPchGYYYT6vFJxE0xySVEbKeKv8n86U6bayxyHOcBgw6Vs Kj2wFikere0wQUp3uNNx049NytJDB4jTUmombf214QXjmQfDM7boxGmLF/T8ny3Q 8g0fE2gWhDSnKZ3hf+MT+QY40oTKzpk2DK5cdmsnq8Ih725n7WrutavkGL3cVYTt ZC93jAK2Tv5M9VH83fFhf0lLEsToCNTaKRBKHWnp0iCdvhpwUPj43V4PQSCJkg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4M7iOAtDAGiSsR/fcPt+ nRStpxgYJqIBsrMRJNCzItTUuIUWgC0+PMvI4cN27bSuJZGIoJpieiSPFQjQerj4 IdBwEXBns+fYS6PcPFWD05Myew2d7zHjIEmEdzSnsnQpybCexqoMHwQnJwqbzFxX lj8YmhNbNFAkVWBheApJOAS/LrEE+O3H7pQfMEwSImrdm5WXnpo8/uYwOjRJg3y5 M9OTmWwFJlFBX9nMXfzhG2IDYcKvwCslg+4lVtyXEIOcUNTYkp4dy3ixX0ySZ5m7 rVp8eY7j1iwtjoJzNVBZxaB7FtiydLenxmkVjvR9LTzKrU/HQD3aOMncWOD1/BP+ 2QIDAQAB -----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 310999922951582771348243939850264018603562 . . . . . . . . [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 2019-05-20 02:22:36 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-18 02:22:36 +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 'rp.elt.net.it-chiba.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 28379398451190076250596955739662645660233855702912546205311093291283904518575263421282955616003652799488395199643652093413900554574421448449644324537872007563625441990855476749736523118636062222397765852070426358104423462548593719939069557023158157524134165011415790659929409547761417704073183122692327771677283351430735396145875969859631779013939223139482448670323671543205959244556464196961895375361823658712961940469766835412773148333969209321091346552309193254121465637060325278765387211426765979367315219688902394981822327100449891372016552122956736552174291218148343456199112768538219696861639394374027761155801 . . . . . . . . . . . . . . . . . . . . [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) 3769c30f91f8a9a02b68abdb9166234ddb24c224 . . . . . . . . . . . . . . . . [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 (29 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rp.elt.net.it-chiba.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) 00f0007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016ad3432e390000040300483046022100c948b2ddb3dc1a3c52803efb9be8e38312a0f105debf3d2e599dc6f6f692f190022100a8379a0184a745fec3626068fd0b3db4e49e13024846faad2950c9edca5ef92700750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016ad3432e3f0000040300463044022036941bec980ad4201c1ff18a661b0e5581446be2816c5edbcf5dfacb98918ef102201dfa1a395ddc0b3d1afe2e90d846f909ea3073f83c982bbede986baadd03a320 . . . . [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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