katalog.szu.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:51:79:77:3e:3c:9c:e1:c4:f2:46:62:db:70:4d:42:79:71 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=katalog.szu.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:51:79:77:3e:3c:9c:e1:c4:f2:46:62:db:70:4d:42:79:71
Serial Number (int): 289061185249004533722668181721249826896241
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 94:3f:1a:7c:ca:3a:50:80:42:49:0c:04:89:84:ad:d9:01:1c:65:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): f7:a6:d9:9d:12:8e:5b:d3:6d:20:8e:fa:ea:44:71:d0:2f:ae:6b:86
Fingerprint (sha256): 06:e9:60:19:19:d8:c6:dc:c2:12:60:f5:3f:92:0b:a6:a0:cc:a5:c3:f5:14:49:ce:c6:1e:d4:d6:e4:a5:aa:bc

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 katalog.szu.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for katalog.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

katalog.szu.cz

Other certificates including the domain name szu.cz

(limited to 100 certificates)

Certificate

The complete raw certificate details for katalog.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 289061185249004533722668181721249826896241
 . . . . . . . . [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 2020-03-06 12:12:44 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-04 12:12:44 +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 'katalog.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 893339027956371391859018537371074880565716285606372310910053264659957344515604280827879649375036626877295411452991821410606600400399914533267922472701200098827673680031459600035332550034023204959847530618174469948895005713481138342959113653156632686543103897642557474577304959708688550602824783962020826464184559583848303531404697614878243887378040589038346313205621442991162844832763521891375970476507413245296472283365511292721311421508121271284050210399898301598128772282904361194987821420755049263319338356453645186262859317395912327462838892400514847933634058841162790149277469292119473379523274308297511054687432455102027466452120811584463023078533735715871363599919460873644855617495631115348578571379847420058902912268500040594705371357397556265762467789297781435205664162858229223863203012408005587254400163450730131562947896078958106805457939887286589272191157685147940893663693368208787201599067231887471590762203693710719243636994636401170380902661691338500679553489241172063846565353942704884430730681772878808516462460411765162135458371073206723341768807412317446446742094463251651683707380864176503081057768415188893235462410100744496662207878521783232110083886425762964591703655544255518997439595017620405520886278747
 . . . . . . . . . . . . . . . . . . . . [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)
							943f1a7cca3a508042490c048984add9011c65c5
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'katalog.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 (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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e00000170affa0b830000040300473045022100abbc4868de014d31bf6b9043d091f27d4b3644c7a2431788b9e5ab276239d0a5022005300b28858dd5f218e3256abcd00969e62d6b86182800e63fe21a59a9106c0500770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170affa0b9f0000040300483046022100fad233dc4ebf496c40032338aaf61274fb938bdfacaa5dd6ddfe170d88a8821d022100efbe8978f311264b60dce06415d43c06de0d4ce1319257b9f963e0b06f2f34ce
 . . . . [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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