mail.ckvt.cz

Issued by RapidSSL SHA256 CA - G2

About this certificate

This digital certificate with serial number 20:7c:d2:3f:9c:f9:4a:9a:14:8e:57:0b:ac:ed:f6:af 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): 20:7c:d2:3f:9c:f9:4a:9a:14:8e:57:0b:ac:ed:f6:af
Serial Number (int): 43183405021547668166915314915526702767
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): f8:88:5f:00:60:e6:7e:67:ac:26:a4:92:da:13:83:f2:7f:26:06:2f
Fingerprint (sha256): 20:85:d3:2d:4b:2a:b0:58:66:a1:95:4a:54:c8:a2:c3:56:db:83:e2:5d:77:ee:5a:85:65:cd:3a:17:43:05:5c

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

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvB0VxXa2PWUSAEs6HNcd
syx/lV89pFlSBv9q8my/d3bST5Nny8HGlXMCSb3pwBpl9o5xnSOuPRefcSlwhHhp
x574p4+sAmy17tq/Rup+R1CwaeOUsqiYECyw3kITHqP3WJpdbBptK/nxtdbrUuu/
44kQx832mqO/kO03w1+kmmSlB7JDaxakb6RgvCXLQ3IxrQ9s5agieYeeWh0yeW/T
urrQc8AjuNnPfeSvmgGm48xoSpTtPgvgxM7uVMfaFtOakTXhg+qDLgSvhEs+UiMQ
IDSYckLXQISWYkIHDo6N/HYGjs5hWoUB+/PcJxANsKkneHx7wNRL1BT0z+qSOXUu
ZwIDAQAB
-----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 43183405021547668166915314915526702767
 . . . . . . . . [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 2016-09-27 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-10-27 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 23747143703514359746124802764852791698791943652193403724030665722933089050899621495930525009110821345680747535324568117436492943576569985890080662604989998847748027913348480278810519381117374068640967830039478074505701320786777301198976156110310242534592585371968150181267067363930302787243595527383576108608346773621277962089969607574731492027613765159883080322056577040890737563237576464341604007831471643787183715588610900073918661067966191416592095095471637324475730820111028968086266779908708795301312872788923202339049103181198340029541881029205448698577038911478655027034270513476102068154969776538511689985639
 . . . . . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700ddeb1d2b7a0d4fa6208b81ad8168707e2e8e9d01d55c888d3d11c4cdb6ecbecc000001576b77fb510000040300483046022100d755cfc0fb3e23204750c8bb0264cdfd4498a7598188e6898dc29bd12dcd65e1022100b9402975add209637870d08c8c9f297a1df68fde5e68ccfa0b3d1d2201adadff00770068f698f81f6482be3a8ceeb9281d4cfc71515d6793d444d10a67acbb4f4ffbc4000001576b77fbd50000040300483046022100b692e9486a7e174ab2e59ff14effeb94146059975fb7c1ceacf376de622bc0e3022100e3924088fa72f0593c36a1b834ef907f8c594ac7f4e99e5c5c2339e5c9542591
 . . . . [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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