techlib.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:1e:75:a7:92:7c:4f:7c:3f:6f:55:98:56:72:8a:91:23:78 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=techlib.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:1e:75:a7:92:7c:4f:7c:3f:6f:55:98:56:72:8a:91:23:78
Serial Number (int): 271701718563071798124169669769544915297144
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 1b:3e:03:38:c1:99:68:9d:72:a5:fd:92:19:9b:cc:a3:a6:b7:ad:aa
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f5:d6:c0:24:d6:f1:19:bb:ef:a6:f0:d4:3f:28:5b:12:b0:3d:98:81
Fingerprint (sha256): 25:b1:d0:5a:df:89:43:4e:38:ce:dd:7c:30:3c:2b:f4:bc:f4:b1:60:58:9c:94:a2:89:c7:a5:54:0b:9a:a3:05

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

Revocation information

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

Check the revocation status for certificate techlib.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for techlib.cz

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

techlib.cz
www.techlib.cz

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(limited to 100 certificates)
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blog.techlib.cz
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*.ezproxy.techlib.cz
blog.techlib.cz
eod2013.techlib.cz
bigclean.techlib.cz
old.techlib.cz
eod2013.techlib.cz
*.ezproxy.techlib.cz
caslin2013.techlib.cz
repozitar.techlib.cz
eod2013.techlib.cz
aleph.techlib.cz
ezproxy1.ntkcz.cz
summon-custom.techlib.cz
eod2013.techlib.cz
vykukator.techlib.cz
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indico.techlib.cz
blog.techlib.cz
liber-lag2012.techlib.cz
stanik.techlib.cz
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caslin2013.techlib.cz
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icolc.techlib.cz
bigclean.techlib.cz
ps.techlib.cz
summon-custom.techlib.cz
caslin2013.techlib.cz
caslin2013.techlib.cz
eod2013.techlib.cz
old.techlib.cz
space.techlib.cz
bigclean.techlib.cz
stanik.techlib.cz
liber-lag2012.techlib.cz
caslin2013.techlib.cz
icolc.techlib.cz
bigclean.techlib.cz
bigclean.techlib.cz
ps.techlib.cz
elag2011.techlib.cz
doc.techlib.cz
matrix.techlib.cz
mail.ntkcz.cz
techlib.cz
bigclean.techlib.cz
vykukator.techlib.cz
liber-lag2012.techlib.cz
liber-lag2012.techlib.cz
psh.techlib.cz
eod2013.techlib.cz
stanik.techlib.cz
psh.techlib.cz
elag2011.techlib.cz
kramerius.techlib.cz
ifis.techlib.cz
matrix.techlib.cz
safeq.ntkcz.cz
techlib.cz
liber-lag2012.techlib.cz
vykukator.techlib.cz
*.ezproxy.techlib.cz
old.techlib.cz
rs.techlib.cz
elag2011.techlib.cz
eod2013.techlib.cz
blog.techlib.cz
blog.techlib.cz
blog.techlib.cz
eod2013.techlib.cz
aleph.techlib.cz
nrgl.techlib.cz
psh.techlib.cz
old.techlib.cz
nejtek.techlib.cz
www.techlib.cz
summon-custom.techlib.cz
caslin2013.techlib.cz
vufind.techlib.cz
www.techlib.cz
eod2013.techlib.cz
bigclean.techlib.cz
techlib.cz
aleph.techlib.cz
techlib.cz

Certificate

The complete raw certificate details for techlib.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApRrAIP4ouxgUGfgqbP/J
GCuUr+nliQnZkK1tuBJ0Wo2ZmawX5WRwQXFMrzfLF6SJ6B6khaKQcoPTIThd48Qq
fE+El1vANsxSEbqqTupK84TjvBq57KeBee9ZbteCsWCsFDQZLXIvTDOq2dqSwvhO
RtGC0tY47EJ/ceMCD+JImBStyoCcVCKgmUaKq7HVyYWaZjuxAIYHyw5Pe+TmFCfQ
jdgcSEsJ9UJgMobTeuNyuETX/PI1G+I5A8vtDU1xXqpefnhXoFpKYFUk0IbmrEat
EjJemIwtz1bZ6ocaWA1pFZ6Vm/iTSGQkpDNYsHPuLuUlAkjSOyobDwnhYABSFGlA
uwIDAQAB
-----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 271701718563071798124169669769544915297144
 . . . . . . . . [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 2023-06-17 21:07:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-15 21:07:03 +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 '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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20842511484282608103837445806893341995676772870037661239495037991504294890978597905490308434764249291124270652493345298571277872542028043780621590638803974826434020174199921527143186496006454079110163904717520104884374052504010567815218390616326593147154797145135362673737459826301540811190777662933277206357496505997164070706293896764305893484670924505672217373986977608911815466832979376716945024261640777269567667794539326814595954262147476439332373857312069755064409928541882942008806557312356901968218158496608357800782254854295360024006099326857359469155222965380442141343713373693142265070493489751857662869691
 . . . . . . . . . . . . . . . . . . . . [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)
							1b3e0338c199689d72a5fd92199bcca3a6b7adaa
 . . . . . . . . . . . . . . . . [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 (30 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'techlib.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.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 (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)
							00f10076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000188cb65c6b7000004030047304502206ade1275022fde3f6a7c81e435b8dbc47bf85832ede35faa8467feab3fb81c5d022100fdf76ecbffeb077d3173bba84fbc4f5632ac473571682fd2937f22ce946c07d6007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000188cb65c6f40000040300483046022100a47d3522f2ca2801a675b8c72e2963e1811639cc2ed63a6b89bb8b2c7ff19aab02210083dabfd3982741895f2434fc4d5dcd0d2e8ad1d90b50c49871553aefaa8121a3
 . . . . [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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