old.techlib.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:e9:2d:84:ff:7a:e3:04:97:19:02:c3:f6:05:2d:63:56:3f 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=old.techlib.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:e9:2d:84:ff:7a:e3:04:97:19:02:c3:f6:05:2d:63:56:3fSerial Number (int): 340683155112605593142753257252976513472063
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 64:c9:bc:56:77:40:29:67:8e:8b:89:8f:50:92:32:60:aa:ec:a7:90
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b3:bc:05:6e:eb:72:c7:7f:ec:5c:26:ff:33:fd:f2:7a:cf:1b:91:d7
Fingerprint (sha256): 2d:53:cd:e4:eb:67:bc:d9:01:ae:71:93:15:ab:5e:1b:64:2a:88:74:1c:63:6c:43:c7:64:87:96:ea:0a:29:a9
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 old.techlib.cz
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for old.techlib.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
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
old.techlib.cz
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Certificate
The complete raw certificate details for old.techlib.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGADCCBOigAwIBAgISA+kthP964wSXGQLD9gUtY1Y/MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNzAxMTYxNDEzMDBaFw0x NzA0MTYxNDEzMDBaMBkxFzAVBgNVBAMTDm9sZC50ZWNobGliLmN6MIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyz1pfTROoO9hv6sBlJ/PZHaK8NRG9xdk O/MF184H4nuqFlxf6Fa8pEQUXu1oB+h+yM0WvaQnXlLDQzlC4btDNao7jJEBChtl Pnc5HTG3ZWZJ8F8eZJPh2GAJjdKLUZPjwNt3ewmwpwjGQVakizlf87pKjk2d/hdT KfgdwM+KT3VG2qYRiEXRPOqfGlUge3cZkUTP1eiGKVu4yucV7X4RFzrzBmSafHhX F1DLlch0ygTcVfIDbNFfnesvyJneYB+Wkft3UGrevGZTZDORNwELh7WdMVROBd3y 49YD2K6zR3OVWmavR0BLXuQ31RnMWyKjqfY8QjBuMG3Pno1A5nMlWnDJw0KSjSlh XRKNmKQsLtWNohF17yv6DnMoV+PbUa5x6E/twaEtvRIjfGE/oWEk6b7lnO+qVAYF aqPlH57C61x7Ta95fil7fFrN4wGy6KztjCBfWBgVAsUNHYNlm34QIQdg5+79J/GH E75K3kiQqms67Oj5PjelVYkH0/5yUucJfUmYdhc6essqEo9s6TEISLycXRSl89U2 ww+CNTG53kwHROdYsuw4fXvowg8wi5iXUfMpfdJXXX5xKE8UmORbkCN3ko8OxVYI PDgm21Y0Aje7Iw//4a1YmU9oq9Sb5yGGz2HhvUJhP23FKCFTQ4ap2YAUFO45amQj Z17mbc8waRcCAwEAAaOCAg8wggILMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUZMm8 VndAKWeOi4mPUJIyYKrsp5AwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwcAYIKwYBBQUHAQEEZDBiMC8GCCsGAQUFBzABhiNodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZy8wGQYDVR0RBBIwEIIOb2xkLnRlY2hsaWIuY3ow gf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHWMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYBBQUHAgIw gZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1cG9uIGJ5 IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdpdGggdGhl IENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNlbmNyeXB0 Lm9yZy9yZXBvc2l0b3J5LzANBgkqhkiG9w0BAQsFAAOCAQEAmg0eP/TnNDPGgcgq 7G1fG0vAoclFqAnF6oOIjxCFcl46f0HFCOKe+q8AXxYa4yyqiIXVlUrD0sgtj/id LrPyHpgf2lqjuzNb7iM9kdakPaTvesIlDvw0ZmN1QFVJkDnHCV7lWSnSVtsw7HyX OLts4LXzc6N1pGbtJ6ICwkisJgK4xNASMUGcGYLjGWfR8AUfotR/1QqS1DUuebpN 9bTxV7zs9tBu/1elqEWDET/Lb4lpTlRW7YI+WFH2g00WDt5D97wy/U8/JXtzMpFj Seax2QWGC6U8nOSkHAIcBw6vAidexx5nR9YiiiD9DpuNxm5lXIM+22oEyFH/Il2z xJI+ng== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyz1pfTROoO9hv6sBlJ/P ZHaK8NRG9xdkO/MF184H4nuqFlxf6Fa8pEQUXu1oB+h+yM0WvaQnXlLDQzlC4btD Nao7jJEBChtlPnc5HTG3ZWZJ8F8eZJPh2GAJjdKLUZPjwNt3ewmwpwjGQVakizlf 87pKjk2d/hdTKfgdwM+KT3VG2qYRiEXRPOqfGlUge3cZkUTP1eiGKVu4yucV7X4R FzrzBmSafHhXF1DLlch0ygTcVfIDbNFfnesvyJneYB+Wkft3UGrevGZTZDORNwEL h7WdMVROBd3y49YD2K6zR3OVWmavR0BLXuQ31RnMWyKjqfY8QjBuMG3Pno1A5nMl WnDJw0KSjSlhXRKNmKQsLtWNohF17yv6DnMoV+PbUa5x6E/twaEtvRIjfGE/oWEk 6b7lnO+qVAYFaqPlH57C61x7Ta95fil7fFrN4wGy6KztjCBfWBgVAsUNHYNlm34Q IQdg5+79J/GHE75K3kiQqms67Oj5PjelVYkH0/5yUucJfUmYdhc6essqEo9s6TEI SLycXRSl89U2ww+CNTG53kwHROdYsuw4fXvowg8wi5iXUfMpfdJXXX5xKE8UmORb kCN3ko8OxVYIPDgm21Y0Aje7Iw//4a1YmU9oq9Sb5yGGz2HhvUJhP23FKCFTQ4ap 2YAUFO45amQjZ17mbc8waRcCAwEAAQ== -----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 340683155112605593142753257252976513472063 . . . . . . . . [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 2017-01-16 14:13:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-04-16 14:13:00 +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 'old.techlib.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 829146415236540237989454475604375799103624578207483765028056972589955013173013089743940875414816843655163060383282015279805869181157218253450446071980445594694969625913252250649301534044677818190940856175061564312382255125782371880119450335710829112813256313533231854716611143730034800798332022357973678963056911507289663226856609497405160318938236374345284254398730396456535709538201665189540917518283414263045048882380825796650778863258103943259095440956429039501352803320933193067035904643340247662757543970446015247192304300103798881007625299961004810290165894740548875896026589631259993108774755071138458503334328582850464792246301463707439281032299925383838775922754408078100562137653607973717400305234486682777454100204904553608650092568411016610135841104795064238007447948902341924261025596581855043462925185172465235969087133308349438814297695987454975673008874204392440956869946845805105413316389435413223516221220908774857730685667654116579117082570927315926820223920449798349818912891604243865847092361309899732339803492595350769295095831374999054628420503943689125339550601178968020058221701459420228958748059167771662048386710297209874569127425439936445347124081389901656299817435734408085899323133555730422449883343127 . . . . . . . . . . . . . . . . . . . . [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) 64c9bc56774029678e8b898f50923260aaeca790 . . . . . . . . . . . . . . . . [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 (100 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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'old.techlib.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [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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