elektrokniha.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:2a:5b:80:e4:3c:a7:65:c7:c8:85:cc:6a:31:1e:ac:b1:ed was issued on by Let's Encrypt.

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=elektrokniha.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:2a:5b:80:e4:3c:a7:65:c7:c8:85:cc:6a:31:1e:ac:b1:ed
Serial Number (int): 275750346196769361632738713088820318613997
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 58:c9:b2:aa:68:e6:a5:48:cc:d8:2b:e8:42:b2:bf:7f:be:45:66:68
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 56:49:85:aa:78:33:69:0b:46:c6:ae:16:4d:98:a3:84:21:7a:2f:f8
Fingerprint (sha256): f1:85:0c:ad:2d:ff:35:d3:52:66:98:c9:5d:3d:46:49:76:6b:1a:28:a2:26:0b:4d:08:98:cf:45:39:03:06:58

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

Revocation information

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

Check the revocation status for certificate elektrokniha.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for elektrokniha.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

elektrokniha.cz

Other certificates including the domain name elektrokniha.cz

(limited to 100 certificates)
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz
elektrokniha.cz

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE6TCCA9GgAwIBAgISAypbgOQ8p2XHyIXMajEerLHtMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDAzMTEwODA3MDFaFw0yNDA2MDkwODA3MDBaMBoxGDAWBgNVBAMT
D2VsZWt0cm9rbmloYS5jejCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
AJiYWOvsy7Z3gehwDociMe/SY2NnAZyQThAWlJz1GbYFMFa2gkFi1DELecDU4cE2
Ex9ccBYh0BxTE4w8DIxdFUf4x5QpQY/C47Iptht3jahz6thjkTfSJlBhoQS9+nYi
BqWgPdwHS4+3BiS2F5Iuya7cFiwsw2yUIy2fndRA2pgmPWeHN7ZMpKPuUjHjhyzt
OO5wpbWYfcOHlvsuRWyibCT/Y0K25HzUX2uWcyR6DKWJaIbxcQN5Uw6IHG5apfCA
DGYNpKIgtbkJHAA1jzyJp4qMTlf9HigZOmPQVgPp9TINN0A/mpBxM9fXtH5BSLQF
qo73ZTaHh2bK/22DQ+9IrI0CAwEAAaOCAg8wggILMA4GA1UdDwEB/wQEAwIFoDAd
BgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNV
HQ4EFgQUWMmyqmjmpUjM2CvoQrK/f75FZmgwHwYDVR0jBBgwFoAUFC6zF7dYVsuu
UAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8v
cjMuby5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9y
Zy8wGgYDVR0RBBMwEYIPZWxla3Ryb2tuaWhhLmN6MBMGA1UdIAQMMAowCAYGZ4EM
AQIBMIIBAgYKKwYBBAHWeQIEAgSB8wSB8ADuAHYASLDja9qmRzQP5WoC+p0w6xxS
ActW3SyB2bu/qznYhHMAAAGOLMPtlQAABAMARzBFAiAloBb/9pLA8J2BLOAGDLau
8aIUhU/7lRCf9kkQzIBhlgIhANjqk8mLI7kRW3wpmT/XghHZyu1GCK88GXnN0Yvk
/TYLAHQAdv+IPwq2+5VRwmHM9Ye6NLSkzbsp3GhCCp/mZ0xaOnQAAAGOLMPvzwAA
BAMARTBDAiBBGYBM3qQXQUEgTTJGKjvTV3tH6ihI2MRz0PDkreYaJAIfWcdD4WZy
gbT1Sur5Z4ft22gIPGKSmn3VU9IlUgNRzzANBgkqhkiG9w0BAQsFAAOCAQEAkb6k
2oGIWhg28R1e91Xr11zQHclrQ9XaTF9pA5DB08Vh8pdL/2qQBitqgooDDXywhEOd
7NWopBuavBYuQyMtMTDHv8V8c3sxmcc4xae74+4PlV8RavSS4Fqr8AFgfJSIHLMZ
FCjvGLrB+A+E5lOFdM6KfScb7mbsi1/9xqeycavkx4rLz1AxMZobELTNsW2wrkz3
GvkgBtFA+FRWaAFWy8oEefyCFMwPWXAiblQBPpgPJ3jWNE2Yk5x779nHwPA5JbWk
FRav2JoKVSiIacfz8W1vb1rZUEN1129SoADusgnHIo5FYbwVum9cY1dtw6INxYvu
WdByFcQyxuGC45YuXg==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmJhY6+zLtneB6HAOhyIx
79JjY2cBnJBOEBaUnPUZtgUwVraCQWLUMQt5wNThwTYTH1xwFiHQHFMTjDwMjF0V
R/jHlClBj8Ljsim2G3eNqHPq2GORN9ImUGGhBL36diIGpaA93AdLj7cGJLYXki7J
rtwWLCzDbJQjLZ+d1EDamCY9Z4c3tkyko+5SMeOHLO047nCltZh9w4eW+y5FbKJs
JP9jQrbkfNRfa5ZzJHoMpYlohvFxA3lTDogcblql8IAMZg2koiC1uQkcADWPPImn
ioxOV/0eKBk6Y9BWA+n1Mg03QD+akHEz19e0fkFItAWqjvdlNoeHZsr/bYND70is
jQIDAQAB
-----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 275750346196769361632738713088820318613997
 . . . . . . . . [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 2024-03-11 08:07:01 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-09 08:07:00 +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 'elektrokniha.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 19263347633048637904692409058500491957070341204876476874983828893421060284081528266002883381108131736172778098833779461216977020764112095699108764643897576175258787597583012761752311375605925721305183168406526961070832150690960029045816785206624063972810366922014338772688300000899628727731593792290148494731204999571886928243242555312269941438653443904869106920591101460150914693266258075324063200561571344232505460652570727187152655534343387663918531899742417430524850684012711339995500442655256218389876579261753188956877546899194731245476235443203379388615826237123766274333248477776287536702101206849220837420173
 . . . . . . . . . . . . . . . . . . . . [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)
							58c9b2aa68e6a548ccd82be842b2bf7fbe456668
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'elektrokniha.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018e2cc3ed950000040300473045022025a016fff692c0f09d812ce0060cb6aef1a214854ffb95109ff64910cc806196022100d8ea93c98b23b9115b7c29993fd78211d9caed4608af3c1979cdd18be4fd360b00740076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018e2cc3efcf000004030045304302204119804cdea4174141204d32462a3bd3577b47ea2848d8c473d0f0e4ade61a24021f59c743e1667281b4f54aeaf96787eddb68083c62929a7dd553d225520351cf
 . . . . [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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