www.ii.ist.i.kyoto-u.ac.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c3:2f:08:47:f8:9b:29:1a:86:99:2e:6b:2c:c1:5c:79:4f 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=www.ii.ist.i.kyoto-u.ac.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c3:2f:08:47:f8:9b:29:1a:86:99:2e:6b:2c:c1:5c:79:4f
Serial Number (int): 327754436058788185670428752779563396528463
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:6e:07:2f:d2:d7:af:19:e3:1a:16:d4:cd:b4:63:c9:b6:8c:4a:35
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 5a:9f:d0:00:1a:d6:00:c9:98:b4:bb:0a:1c:57:c5:c0:61:44:af:e5
Fingerprint (sha256): 07:d5:c9:58:c1:a0:37:af:77:eb:68:1c:73:31:27:11:9d:e9:4a:87:9d:0e:d2:a1:fc:ae:68:9a:5e:83:cb:ce

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.ii.ist.i.kyoto-u.ac.jp

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.ii.ist.i.kyoto-u.ac.jp

Public Key Algorithm

RSA

Key Size

4096

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.ii.ist.i.kyoto-u.ac.jp

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Certificate

The complete raw certificate details for www.ii.ist.i.kyoto-u.ac.jp in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 327754436058788185670428752779563396528463
 . . . . . . . . [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 2018-02-07 14:00:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-05-08 14:00:29 +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.ii.ist.i.kyoto-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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 869438456488126916131352186563767316231625577137007140299416283004083494981345734883279113210180135470523342333895314416148912545048024706144954942307495988743141662289871602174656398976303345586228123065145977331392310416362786189926497689392643511287000237914168326271676842535184452313172728865579450710790985535255342921215736003364097399752078820155278656304538286165187375914300717292894225339840564459009869370354097465050247055958660822786864665303245611991940340852956493215725178296833028395577967453781166727144292545675877866389800000202175696364234693117383385660602947829650275345470272327240960478614497514649239748114231920354121862150218814460555215771263768797488923715737179188450962942994328177832653845744006867960888373737862648969173242249585072683140472445057851194830252345836956249345034070030344398220798937240628938409230143494318410143813757278987196656073757039218133109634269913061667823977275720617696127761399542651159072805637660278775726213206947699691545239669598830839413500404804157427245694157888656992105647425298023611334869121984294440239905269870579833532815283484861587124428269219508905548466111550341261990159000843451074049072979021598261282366576962964338150558378401236493514811171159
 . . . . . . . . . . . . . . . . . . . . [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)
							726e072fd2d7af19e31a16d4cdb463c9b68c4a35
 . . . . . . . . . . . . . . . . [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.ii.ist.i.kyoto-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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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