nejtek.techlib.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:3b:da:39:75:5f:a9:8f:31:ae:4b:ce:93:b4:f9:57:fe:cb 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=nejtek.techlib.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:3b:da:39:75:5f:a9:8f:31:ae:4b:ce:93:b4:f9:57:fe:cb
Serial Number (int): 281703587488239232573442374000547349397195
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b0:18:0f:ab:40:ce:40:26:3f:d1:f1:ad:b2:8c:0d:fc:dd:0c:bc:b0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6a:c2:e6:54:9b:b6:b1:09:17:7d:75:ac:cd:be:da:18:05:ca:af:93
Fingerprint (sha256): 32:6a:d6:8c:ba:2f:db:a5:18:70:e0:25:a8:fc:c8:61:c6:cc:15:2b:e1:2f:ac:d8:2b:74:e8:67:4e:47:2b:07

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 nejtek.techlib.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for nejtek.techlib.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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

nejtek.techlib.cz

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eod2013.techlib.cz
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Certificate

The complete raw certificate details for nejtek.techlib.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 281703587488239232573442374000547349397195
 . . . . . . . . [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 2016-11-07 09:06:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-02-05 09:06:00 +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 'nejtek.techlib.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 885913261158334738997364897171645506771228992916370722922755846577996218902589445879600985098999324585207746896501492674101252834261173997615550993961941473947987913940816641416467633852640670129544162094180546362667572385924461181363947362711874330387015683306873604592449784399684546174126794852149493759018026112624052200562069138029397069597358150041082234805300266325829121994537186274175942648156508529395929574336004761003035800658446785085048114021358128909210247751152171939982298657776423894044325394437494343447699735525777259943561572170494443452081156649843914908036964869673973282773685185557221995913973348037256389948669907961192210322318232109907536441479981885742988885278468051252960992327829596712116724950179369562321719562225965028048291343776055521004055042730299542166146238446831908296617212920897694007801762423490728485328570332629830302938034790916688361728400616818605368232311296230114177346415075092895796449451734322795781057745665572632766985392977563690291319049190354794181167117389246896365684416819140671801157024141009398435159632413992779011889162087409507749213322800817747641782088272275482733723339665862238230446788711179326476048017045245907623377991472277827662773445100036236845967731761
 . . . . . . . . . . . . . . . . . . . . [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)
							b0180fab40ce40263fd1f1adb28c0dfcdd0cbcb0
 . . . . . . . . . . . . . . . . [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 (100 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 (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'nejtek.techlib.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 (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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