mail.ckvt.cz

Issued by RapidSSL SHA256 CA - G2

About this certificate

This digital certificate with serial number 3d:94:e7:b1:d7:f9:75:2f:6d:7e:55:7d:74:f5:45:80 was issued on by GeoTrust Inc..

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)
  • Sub certificates SHOULD include Subject Key Identifier in end entity certs (RFC 5280: 4.2 & 4.2.1.2)

Certificate Subject

CN=mail.ckvt.cz

GeoTrust Inc.

Organization: GeoTrust Inc.
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 3d:94:e7:b1:d7:f9:75:2f:6d:7e:55:7d:74:f5:45:80
Serial Number (int): 81856067004787084329248967253841757568
Serial Number lenght: 126 bits, 16 octets

SubjectKeyId:
AuthorityKeyId: 4c:f4:bf:e8:3b:be:c2:24:f3:1b:47:3b:b5:6e:48:8e:16:ab:af:12

Fingerprint (sha1): 46:ca:bb:63:1a:c2:d6:77:08:4b:b3:80:5d:d0:4b:0d:4f:e8:68:31
Fingerprint (sha256): 46:61:8c:80:f7:36:16:a3:da:18:17:00:27:9f:6d:47:74:32:30:2c:e0:93:a9:3b:2f:a9:49:a3:d9:c8:d0:8c

Issuing Certificate URL: http://gs.symcb.com/gs.crt

Revocation information

OCSP Server: http://gs.symcd.com
CRL Distribution Point: http://gs.symcb.com/gs.crl

Check the revocation status for certificate mail.ckvt.cz

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.ckvt.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

mail.ckvt.cz

Other certificates including the domain name ckvt.cz

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFYDCCBEigAwIBAgIQPZTnsdf5dS9tflV9dPVFgDANBgkqhkiG9w0BAQsFADBH
MQswCQYDVQQGEwJVUzEWMBQGA1UEChMNR2VvVHJ1c3QgSW5jLjEgMB4GA1UEAxMX
UmFwaWRTU0wgU0hBMjU2IENBIC0gRzIwHhcNMTcxMDIzMDAwMDAwWhcNMTgxMTIy
MjM1OTU5WjAXMRUwEwYDVQQDDAxtYWlsLmNrdnQuY3owggEiMA0GCSqGSIb3DQEB
AQUAA4IBDwAwggEKAoIBAQDhVmw3mk8SzUyy6DmGPLIkN2lAMh7b7tjlmhDbGXhB
ejKjjTb1pBD+iFoG9jWlhDR9Og6MjCL9tUI0RYwI8gD9iagt8NI6rOmO76HHf+oT
MVPRaZgzIAbVIvGh/EjduQk43gbFWQVHXlKxkzTA+8VmxmdFVjj5sV3HxpPLJbML
X3BwXZlFmEVTMmqVqeg5BpIPmRWTKL1NbMQiC0d+WrOjIwLDq4QNqXe0gtzaH9Ra
p61bjh0uz9yQda/haJNL/Cpx35/bZoh1JLVXR8OB3oTKc6hYSOCszwNxj8B4+lld
OlqTnUyTuTRtaXsPBVxvHqL2GE4VAisMecUSnAShinz1AgMBAAGjggJ2MIICcjAX
BgNVHREEEDAOggxtYWlsLmNrdnQuY3owCQYDVR0TBAIwADArBgNVHR8EJDAiMCCg
HqAchhpodHRwOi8vZ3Muc3ltY2IuY29tL2dzLmNybDBvBgNVHSAEaDBmMGQGBmeB
DAECATBaMCoGCCsGAQUFBwIBFh5odHRwczovL3d3dy5yYXBpZHNzbC5jb20vbGVn
YWwwLAYIKwYBBQUHAgIwIAweaHR0cHM6Ly93d3cucmFwaWRzc2wuY29tL2xlZ2Fs
MB8GA1UdIwQYMBaAFEz0v+g7vsIk8xtHO7VuSI4Wq68SMA4GA1UdDwEB/wQEAwIF
oDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwVwYIKwYBBQUHAQEESzBJ
MB8GCCsGAQUFBzABhhNodHRwOi8vZ3Muc3ltY2QuY29tMCYGCCsGAQUFBzAChhpo
dHRwOi8vZ3Muc3ltY2IuY29tL2dzLmNydDCCAQMGCisGAQQB1nkCBAIEgfQEgfEA
7wB2AN3rHSt6DU+mIIuBrYFocH4ujp0B1VyIjT0RxM227L7MAAABX0l3d4sAAAQD
AEcwRQIhAJQhXFkP+jOtdW6tRTBzp4z2/JXedRJ9orly6zfzgZcpAiBtW7Cds2B6
GwXnHvvsP3wjUAB4MQwbWyJdf5hzAok/wQB1AKS5CZC0GFgUh7sTosxncAo8NZgE
+RvfuON3zQ7IDdwQAAABX0l3d8AAAAQDAEYwRAIgPOpGFPqt3RGVbvrKwRUzsExr
NCP+wjq4HURD0b/SHZsCIEGo+V3LD91IhnalP6g8V+A9AiZgeOMah+RvIJSVZ04d
MA0GCSqGSIb3DQEBCwUAA4IBAQCXqgmSsVg9I7FWT3jVjFkJgmFs3xA5oMHGxzhe
MEOGVva79QOn8ZFb3ChbZ8yywLI6F6JArflP9F3gHtwUw99MDaRkwitWwK0PBU1b
pkOxiLBwchAXov2pMTTjmxmBE5O0Hbn304duRnHTr0EkA8DrOBQA15cWpglGHq2/
6vGvbr0HObet5vZeOREfH7c3qrwyB1ZL2hC7wC8EKdUEhcrS+1kCRvczkq949Vh2
6SO5c6eLwgtIovNHLFm8X3b215vqN4+nFe24yr+WgdWS5+MgLDA9FHIyKybb2Oox
m8M+lb/LQFFpmcNrCEUO4Rc0rnvLkDOBrMH9ujclIW137Z6O
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4VZsN5pPEs1Msug5hjyy
JDdpQDIe2+7Y5ZoQ2xl4QXoyo4029aQQ/ohaBvY1pYQ0fToOjIwi/bVCNEWMCPIA
/YmoLfDSOqzpju+hx3/qEzFT0WmYMyAG1SLxofxI3bkJON4GxVkFR15SsZM0wPvF
ZsZnRVY4+bFdx8aTyyWzC19wcF2ZRZhFUzJqlanoOQaSD5kVkyi9TWzEIgtHflqz
oyMCw6uEDal3tILc2h/UWqetW44dLs/ckHWv4WiTS/wqcd+f22aIdSS1V0fDgd6E
ynOoWEjgrM8DcY/AePpZXTpak51Mk7k0bWl7DwVcbx6i9hhOFQIrDHnFEpwEoYp8
9QIDAQAB
-----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 81856067004787084329248967253841757568
 . . . . . . . . [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 'GeoTrust Inc.'
 . . . . . . . . . . . . [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 'RapidSSL SHA256 CA - G2'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-10-23 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-11-22 23:59:59 +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:12|false] UTF8String 'mail.ckvt.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 28446235250630652437580502883707658694113281248797722697748181996114188994927702943798313987188371772278410658089698244366070807343282384055670289773076079404038612295198826877894237447211559742275970902422200984114015191606628583956162071168298420773858191249911187719553849523235286789424005755037891249209982424605150735965291280212070183368896812242941696549282872577248982890836457595964861403607846138243293461452995311912274964789781705831411745934632574955490816459582822555007982464113183458160551889290132260001701311522016881532925871172489055109405526175534696675087836468990562317349763805972736695237877
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.ckvt.cz'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://gs.symcb.com/gs.crl'
 . . . . . . . . . . . . . . . . [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 (104 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: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 'https://www.rapidssl.com/legal'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://www.rapidssl.com/legal'
 . . . . . . . . . . . . . . . . [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 4cf4bfe83bbec224f31b473bb56e488e16abaf12
 . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (75 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://gs.symcd.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://gs.symcb.com/gs.crt'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600ddeb1d2b7a0d4fa6208b81ad8168707e2e8e9d01d55c888d3d11c4cdb6ecbecc0000015f4977778b000004030047304502210094215c590ffa33ad756ead453073a78cf6fc95de75127da2b972eb37f381972902206d5bb09db3607a1b05e71efbec3f7c23500078310c1b5b225d7f987302893fc1007500a4b90990b418581487bb13a2cc67700a3c359804f91bdfb8e377cd0ec80ddc100000015f497777c0000004030046304402203cea4614faaddd11956efacac11533b04c6b3423fec23ab81d4443d1bfd21d9b022041a8f95dcb0fdd488676a53fa83c57e03d02266078e31a87e46f209495674e1d
 . . . . [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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