indi.szu.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:24:26:a2:ac:aa:8e:07:12:43:ee:68:b2:5d:ae:98:47:f0 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=indi.szu.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:24:26:a2:ac:aa:8e:07:12:43:ee:68:b2:5d:ae:98:47:f0
Serial Number (int): 273638378322452628945442677317316652845040
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: da:11:aa:dc:b9:56:18:97:76:8a:45:02:93:ac:40:b3:d6:29:09:3b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 4a:0d:47:3f:1a:d5:5e:df:93:da:56:5b:47:83:88:e0:c2:8f:d9:5d
Fingerprint (sha256): 28:65:8b:80:40:59:e7:5a:48:95:cb:37:a8:e4:92:ef:d0:c5:17:0f:0c:69:e4:81:66:29:2b:09:e2:a9:7a:eb

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate indi.szu.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for indi.szu.cz

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

indi.szu.cz

Other certificates including the domain name szu.cz

(limited to 100 certificates)

Certificate

The complete raw certificate details for indi.szu.cz 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 273638378322452628945442677317316652845040
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-25 03:28:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-24 03:28:17 +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 'indi.szu.cz'
 . . . . . . . . [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 845693061755928166110880218130186647433222468873229857121011122914085346212906565151005515531951986825892443189024152119619695802909184995868645602322735479086463648032154546396403157942323305186623370636545135690721889347511899369850080015999768533770874658324370167654472643899626698210423216128877054631346973430975866260886529764992275793987494657231255636442915315879286345324856169371276236442018784801480460492862396722482982658723821696417591396262717915766970731194501732118924166332095526980505644099256417058988124035699197745927585543502016230376080897722679605598768527361135163074949841847980073256172452384538450034726264234430394669025848379991124164853855794097689570614267144317703939948290899389496558332846557228149653089431547403198529498504958020801098576629268743574420525263286837131669490217360337973767855816386981775358885692894153038714758198894929856973608085794724308040172170978030842053114571322814287099202187401891436535275370195839275709948010180932837248227824035591552768623219588428925961782919722673328821678955640208164489381499439286518712800051668175561058023056515903665606399269131420198891420050879644920860639599947283292219091957482843975334547874871911931121238951762443692737545531811
 . . . . . . . . . . . . . . . . . . . . [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)
							da11aadcb9561897768a450293ac40b3d629093b
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'indi.szu.cz'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018aca98600c0000040300473045022100801549e4f8852fef3d982365fa81227b0e6368368fb05a038ff138f88521da8002205a479fffb5709e38de455de86183dad3b54384c238fd02463475a3f1404c6e24007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018aca9860770000040300483046022100ce19101efb57cff983cdde961a71e7ccee4fef7e71e4e2c750683ae372d44759022100ad907b214c74689a05b253ce6044f98340a93974f2781d6ecad10492cc2e9ec2
 . . . . [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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