stk.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:77:7c:52:d2:ca:19:4a:15:23:42:5f:52:d7:da:fb:d9:2d 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=stk.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:77:7c:52:d2:ca:19:4a:15:23:42:5f:52:d7:da:fb:d9:2d
Serial Number (int): 301995713774010078796427373515506578086189
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e6:c5:df:24:fb:d7:5e:37:48:37:92:18:da:13:44:0a:27:bd:e4:b5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a3:91:5a:d3:c8:6e:e0:4d:60:ec:69:dd:a9:e6:a1:66:2d:19:85:d4
Fingerprint (sha256): cb:5d:e7:a5:5c:cf:18:9a:c2:b1:7e:49:ca:21:b4:49:5f:2d:92:9d:90:f4:3a:99:f9:43:b8:18:3e:4a:42:7e

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 stk.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for stk.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

stk.cz
www.stk.cz

Other certificates including the domain name stk.cz

(limited to 100 certificates)

Certificate

The complete raw certificate details for stk.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 301995713774010078796427373515506578086189
 . . . . . . . . [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 08:47:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-02-05 08:47:00 +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 'stk.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 803086665396130903420511747637561463293198041233351934199905112905082361910557548932851887811810315473202604531669141121207778206529544574347618515010286545474522185726161428394981385680443479392902146768725222186727781113042538055269632052769359943219942090622988188506041187105441497100957590659756027622236059182927906599938127766396762190676959679709105882799043212938217291467124423708110832508046689627167497582311336356867994017316697367208972120231450846167812302891652177867355583305208829016636601315494102322057326333354249978690012277051076679282546129809901376927230392386467751222345794860351746819148032477177706724301147255802153569536466671336861488325247104692722981978425569475730447636421494614856985572134192347374133873644105396200511370321296911693318533325928254377139472006506551258488275329654865003201145229207107947125385360825880613997696095705812957523790934875037892951994699328854318707014748787921432404222081851605384539077351556502297295355277357338561047729481501754730059649033147923821023087337506931420471790937405958085791054567675542781176950082402072304472443800848074120953327438619679762616579484862393055298679677771569400770717438661773256262383258961456544875491682387645801253706142937
 . . . . . . . . . . . . . . . . . . . . [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)
							e6c5df24fbd75e3748379218da13440a27bde4b5
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'stk.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.stk.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)
		003ad2ead91b8f0a3297267789a422539b1f630fb419ddc376f74a21019dbb7277afaf7732556676a6665379219f7780273e3af0d5937622c2fc7f0a6e7c9bdb29ccf27326bd7b4afd177bb8182ff3ae251bc5096c3663e7388d2dabeeee58405400e43faeff26e3c6bf9a601b03e828f3467ff8e9eaaefcbb47d1aba73444fae4e58f17b2df66f22c4606c639c128d49c61c0f6657bbc31d04ce1e336a4f6174a88d7966785a63d76278d162484d812d2cfd2ae1e3e8b92e492cd3ca8af99159ad67fa2bff19f157f8b66eab391285bc27915868ebded773bd685915c6f4a275480d2d763ce611abe869fcf4b15fa5d444a766d315d3102d48dec7f077e820137