blog.pavelbinar.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:d5:bf:88:58:18:b2:33:7e:5b:1a:d2:0c:eb:74:90:de:94 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=blog.pavelbinar.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d5:bf:88:58:18:b2:33:7e:5b:1a:d2:0c:eb:74:90:de:94
Serial Number (int): 334071592435816983931205701538181398191764
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a9:0f:38:a1:ff:e9:54:3d:00:2f:f1:48:2c:a8:86:9c:3f:49:09:80
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): bb:23:8c:6a:ec:a1:15:5b:ae:b8:6d:a9:18:c2:d4:85:58:6d:96:0a
Fingerprint (sha256): 19:5e:7d:ba:46:89:e7:94:0f:32:9b:a8:66:24:6b:92:5d:e1:ff:6b:56:42:d1:13:e5:cf:5b:2b:9b:23:59:d8

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 blog.pavelbinar.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for blog.pavelbinar.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

blog.pavelbinar.cz

Other certificates including the domain name pavelbinar.cz

(limited to 100 certificates)

Certificate

The complete raw certificate details for blog.pavelbinar.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 334071592435816983931205701538181398191764
 . . . . . . . . [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 2020-03-21 16:28:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-19 16:28:21 +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 'blog.pavelbinar.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 694001123884537255806568099499093917124852669797962764450463753878449322513658760723132923024603343926545408295759702638805488846397967388881619308186051198784635558236764083539997752001138093264890700476701779172894768390670499566782031883779267274626733814070572923555499641205734152503546821065918057303576143246037132303248988373375543481969388720782675895696608444558337729730269452612233221067436796353621814991206532024045672602443729080692136059349669513322016727229074163563050851913128472403284118247462933367301233016770651700820774682348226264033086858055783331030494433458121012205202818182428822035384532780576339097738237536872787855975901218066487912174468049220870086406153093117765741927204429841345264564672401729626990197339520993624361819257972090688476486778549817369012652960955711148034184475876611992330167146802204112185820729657818903269802193555605793879255836684572819500687465033060712284384089828891185115178797971380999478240980275313421402702626755031219805164086853627335106370021962197764179787869324757310300250386125327682109226125982354392642129304778711206722196888788044305797455516922411409113716923298816350740182016770670868620056805028180734521908441821779713379432484632441456000793950593
 . . . . . . . . . . . . . . . . . . . . [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)
							a90f38a1ffe9543d002ff1482ca8869c3f490980
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blog.pavelbinar.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00077005ea773f9df56c0e7b536487dd049e0327a919a0c84a11212841875968171455800000170fe2374080000040300483046022100cc8545e1d781d8586dc439bd0306eacf8110b6014297e483870b2e35d9d4e37c022100a24942887d533bda0a3f1cec3f0fcd7409581557dd0d7593b871970ecb89db4f007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170fe2373f5000004030046304402201a6efd65d4f6c60abff8caa604d5903d47d1268562be2e39c92a4e9f3071b87702200e4a2cd8d9de479d661f630e94eb13932ba7b1fb2e26e4cf166ef819dfd4f8a3
 . . . . [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)
		005f37369b7c71a11e919b576de5ddc2f0805657c1dc3f9be8bf42424fcd67bedc92e6fe6f2a06102614bf1571a2d1f9a05e88d265f955338611aa34a549e60d70312d72da7e13031b8a6fbf4d30d507f7545476cdcd1760ab5cff3cb640b88c27159b0c8c8cf57cc152a654c3aee954ae6c51532354f6f69dc3a53ba941e0e4868446bd72cf6ca64c54279df609e7a2d56b14dc7fed0e75662e4fb9fc0d9e322c1234790098d7c5de34c72c218b24d9c3b6bf3879e1d8d471c32397f1355927251b7785a49ba4c484979414ea1e3fe63d28ceea46c980a078ab6622fb35b12ebea1c6e7379ee12b8d603d36a95afaa0e1094baa6e37c11c50ce32f6902d3b8bc0