www.cernym.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c6:8f:ed:82:69:5e:9f:7a:50:d2:18:b2:6a:9d:2c:20:af 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=www.cernym.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:c6:8f:ed:82:69:5e:9f:7a:50:d2:18:b2:6a:9d:2c:20:afSerial Number (int): 328904079268440761356056102121613755687087
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 65:3d:e8:b4:43:2c:b2:59:fd:4b:f1:0a:4b:1c:67:dc:d3:d3:e4:c4
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 98:90:00:ab:61:c8:41:5f:fd:1d:72:e8:a2:18:26:9d:be:cd:45:45
Fingerprint (sha256): 96:52:03:ec:8a:80:63:ff:ee:1d:e8:19:26:ea:e2:4a:a7:86:f4:6e:6c:cf:92:d2:b6:80:b7:88:8b:8d:2f:02
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.cernym.cz
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.cernym.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
www.cernym.cz
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Certificate
The complete raw certificate details for www.cernym.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFUDCCBDigAwIBAgISA8aP7YJpXp96UNIYsmqdLCCvMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA3MTYwMDUyMTNaFw0x OTEwMTQwMDUyMTNaMBgxFjAUBgNVBAMTDXd3dy5jZXJueW0uY3owggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDwsQVMv2vhj6IcE2oUyyoE+rayyKOPiTen eJHSoQDzgnI+IGsgnwECq7BISOvpULAFYw0ebhxUyjLOcxtm0glIzCb5tqGh2BVo F5MW55zXU9o9LnN2qIoFwCIpX0P18AKEJDJOquwo5Qx+lOruFkfw/EQ/8cb29pmu yPSICipsDD/EMpqOd0wbb4foEI1F/b4kSI7FUWL0jcO3Df0EWyFj7wxvkTaoAu+e WkYIuJLItpnB96HSkmNvSU70q2nP05Ntb8BpPtTEUGZnCTRk+gnDYtBlR42qu8Q+ e3YBRAnB/3zwoBip7tCeeyTG96C3jqyIuwBICdi9lettzgXhI3jHAgMBAAGjggJg MIICXDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUF BwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFGU96LRDLLJZ/UvxCkscZ9zT0+TE MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEBBGMw YTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0Lm9y ZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0Lm9y Zy8wGAYDVR0RBBEwD4INd3d3LmNlcm55bS5jejBMBgNVHSAERTBDMAgGBmeBDAEC ATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNl bmNyeXB0Lm9yZzCCAQIGCisGAQQB1nkCBAIEgfMEgfAA7gB1AOJpS64m6OlACeiG G7Y7g9Q+5/50iPukjyiTAZ3d8dv+AAABa/h66m4AAAQDAEYwRAIgF5TNVO/V1wxU x7FIZcVbO+zIyz+Xm0OztZuvOX5WbckCIBWCVccxWD/jiS400VScWaCP5FSyZa8i 22kaYvUkVF+TAHUAY/Lbzeg7zCzPC3KEJ1drM6SNYXePvXWmOLHHaFRL2I0AAAFr +HrqjwAABAMARjBEAiAziyMl1NKxdPnuDfPlvXVNaDxV+yEjHe8HsEUY/gLopwIg ZTTJOFZpFZaxZKE7Tr1AhkCI7y/bJCeJFoj0EmgnzfgwDQYJKoZIhvcNAQELBQAD ggEBAIFsBkDFld3v1rgdT04XdMuIl3+4dqJhqTMonVV4SjfJw/+sgdcfDv4UcJzU Tck0wN2GkM9e/g9Hn1ain20PEuaxRrTM6041iVn7xF2JpML58swVjaMk+YlJ6G7Y yqI4f+7Q46YvodTsIAfWBurR2cz80cxwhXEb9D8Kk3KQwQjJ8Q5LyWn+Suo2/+X5 HORaqiURknaJd2Ck1kL/Yx9R284FKIC2EbzZ1f+RD9ey4gqdNu/+twJ/yyhgBYVe P6/se/EgM4DVAryy9rTvsRIasUijKuh0VzK7MwvqS/hIUICbubO/NdiOIDW0YYyy 7qMFYxqLAwhciNdo9EMYpngfOmI= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8LEFTL9r4Y+iHBNqFMsq BPq2ssijj4k3p3iR0qEA84JyPiBrIJ8BAquwSEjr6VCwBWMNHm4cVMoyznMbZtIJ SMwm+bahodgVaBeTFuec11PaPS5zdqiKBcAiKV9D9fAChCQyTqrsKOUMfpTq7hZH 8PxEP/HG9vaZrsj0iAoqbAw/xDKajndMG2+H6BCNRf2+JEiOxVFi9I3Dtw39BFsh Y+8Mb5E2qALvnlpGCLiSyLaZwfeh0pJjb0lO9Ktpz9OTbW/AaT7UxFBmZwk0ZPoJ w2LQZUeNqrvEPnt2AUQJwf988KAYqe7Qnnskxvegt46siLsASAnYvZXrbc4F4SN4 xwIDAQAB -----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 328904079268440761356056102121613755687087 . . . . . . . . [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 2019-07-16 00:52:13 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-14 00:52:13 +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.cernym.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 30384485353595218410256705551872431338752349289416387067728287676591846517869870053498549735802742302488784019615601855637376388792608166965632284479604298742614497477221629784040022981827775047690421639514160015490879052859526347352759852449499074711238945211675012059328929869537779219678649144925504975364626654049315418571879980449235738617305947956200074505990785225425942893431215329263849485819056407622331692966303750059821156795344899610888104680026113015345089626301704309890050649014462292914078402711563264305542371569898677632031115095414588296044925411010796323388324821347194559698262883358389668378823 . . . . . . . . . . . . . . . . . . . . [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) 653de8b4432cb259fd4bf10a4b1c67dcd3d3e4c4 . . . . . . . . . . . . . . . . [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 (17 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cernym.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 (243 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes) 00ee007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016bf87aea6e000004030046304402201794cd54efd5d70c54c7b14865c55b3becc8cb3f979b43b3b59baf397e566dc90220158255c731583fe3892e34d1549c59a08fe454b265af22db691a62f524545f9300750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016bf87aea8f00000403004630440220338b2325d4d2b174f9ee0df3e5bd754d683c55fb21231def07b04518fe02e8a702206534c93856691596b164a13b4ebd40864088ef2fdb2427891688f4126827cdf8 . . . . [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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