www.emak.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:f0:21:e7:80:d2:6c:ba:16:91:b2:0f:09:cc:f4:2b:f2:66 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=www.emak.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:f0:21:e7:80:d2:6c:ba:16:91:b2:0f:09:cc:f4:2b:f2:66
Serial Number (int): 430161978345321434329945669718196842394214
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 1d:5e:2c:45:92:86:97:37:37:09:35:66:17:cd:59:42:39:51:e7:e5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 49:2d:28:e8:c6:ba:c7:84:72:28:c3:f3:5c:51:63:9e:29:c8:f5:ea
Fingerprint (sha256): b1:2b:e9:88:aa:23:50:8f:ce:9c:27:77:f3:1b:89:22:9c:7f:70:d1:ba:fb:7f:5c:ce:76:e9:b8:61:69:a0:3a

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 www.emak.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.emak.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

emak.cz
www.emak.cz

Other certificates including the domain name emak.cz

(limited to 100 certificates)
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
www.emak.cz
emak.cz
www.emak.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxXk4uigItI/+lcJGNb3G
sT2lsFOMib6OCzF50a8tTIlKgLHXoKN2zGGrxbANN/rBHIXDSyVWu3YcW4w9ifZR
fJ+leAS74Miw6NnZVbNN5Qgt5RGtWTYdogUNFKp8v6s6Hi2+e9aqbKxLkrmrWJh+
5NuTHTENWK386VboVZ6JwKp/oS1GuJrHIPSaZ/q7hPHOU8KgSGkOM9PEbET/KISA
5YiDXFg73Aajzo6zriqa0oZ03fRPP23gXt8Zk7C/80FPZRX91BoXuBzZZZnhFxEQ
09yU0Mvsc61uwjb1PUdrTVyhntvVneoxCpEBdIEhU04dO6WT8bQzeFiZZbnfiakm
vQIDAQAB
-----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 430161978345321434329945669718196842394214
 . . . . . . . . [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 2020-04-06 22:52:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-05 22:52:57 +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 'www.emak.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 24928722672503618655006819784222541008417279860219714425776539655778863123038320912782697191106633702093156696095417526912175566374656668894950402024587183527144183973569918093038785518327255610048724687697965893655551064339119802770307063018946357843336519715329406143385952362714662086068410926689554903931055114694241459165727911973548067134878479563199780230962962856112288681698880992023990423077382839458190869605395997583372600619695498185994661685196448622061183914100248413690119419250143610558624401942202195359820081122615323093545186710686165400183882259337919226086980439173688020945635321135328364406461
 . . . . . . . . . . . . . . . . . . . . [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)
							1d5e2c45928697373709356617cd59423951e7e5
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'emak.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.emak.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000017151e9505d0000040300473045022100bfe4f508eb7e5c0054b801b3b0d43b6bece8503fc4554b7857e1eb3bb1c9db5402205042d97ce0244486d1ab73b7ca2ac96a80c1fc35ec832be22cdbbd6c2222d5ad007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017151e9504e0000040300483046022100ebd6c89f8419908c9a360cf27dd8b17ac67c99b693db7c30f8af1b965c5c08d6022100c567508bc75b678ec8ae197d56d19952790711964469a9742ff3cb26d32ed79e
 . . . . [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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