matrix.techlib.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:f6:9b:f3:55:41:d3:90:c7:3e:58:19:3a:36:94:4f:63:c2 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=matrix.techlib.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:f6:9b:f3:55:41:d3:90:c7:3e:58:19:3a:36:94:4f:63:c2Serial Number (int): 345253613854535011112386147628748458910658
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 03:9c:09:d1:c5:52:9e:07:f3:fd:21:11:ee:a5:cd:9e:de:e3:2c:c4
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9f:8f:2c:1e:e0:80:cf:4f:e6:57:00:67:ca:08:d0:f5:e6:37:f5:81
Fingerprint (sha256): 2a:5a:63:8f:69:67:d9:31:12:a4:f0:49:24:b3:0e:0a:a0:5b:7f:65:2a:7b:9a:f5:c3:c4:83:bc:b9:1e:69:c1
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate matrix.techlib.cz
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for matrix.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
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
matrix.techlib.cz
techlib.cz
techlib.cz
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Certificate
The complete raw certificate details for matrix.techlib.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGZTCCBU2gAwIBAgISA/ab81VB05DHPlgZOjaUT2PCMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAzMDQwNzE5MjJaFw0y MDA2MDIwNzE5MjJaMBwxGjAYBgNVBAMTEW1hdHJpeC50ZWNobGliLmN6MIICIjAN BgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsNjwk0SAxhvIBLHGW9yTbnImzwud NKczRRFc3FAMBvwagv5Y4NNhVPGJNAUMMBs3hQMZvdFctJSDJvQ2qsO6vyuzQCT5 2mJUrUCN3HUD7H/Bw6U3Tnq58Ert9NhSYKUJvakiaH8dhcl7Sb2yOfp3hlhPzYHJ qU8CIqIJBPbfdCn+Tq5BefdelmwA4QnjSAPMdD7OVwCFhFMANd/qYoPCX6+eawwO IYWcY5AMh33WyZG5iGhdFnH1uwJiH6kujxn4HtZqKUzeiSkyIFXyWvgvhhzLP6CY 3CEM7+lRjER77vKr1qcCKJEBoNRulEn944Vj+xYqsRKLdr60totF2SBOcMjn2V1k wP4JchrW2Nip+y8pPicWE8Rh+qu+55B/vXd+yPTk1R4RHTLAmznQ2PymVTavjKwK uU/IEKi01kP5pv9qi9a1rOFOMO3Qjin1flyw2lp0PjOhMHz75Vd9GomPxQcTSZBX x7nF5m/8lwhSJPzgzUft83V4rIEKfc+disKaJOZ6BYQbcZl+nuUFSrKOSXOH4uGX Ma9imF92d1HDslAYNaxiJq6EsXzkhDnphMhApgPwJHa+XdSgbWT/VZlKyT6hC/kW E7BAVyD4PnTa/Dq4oyAlOjzu9QAMI60/WjKIhukG3rNGQJD4vKYB0JWFNQXTma3e /riRCq94vIjdZT8CAwEAAaOCAnEwggJtMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUE FjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU A5wJ0cVSngfz/SER7qXNnt7jLMQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl 7/Oo7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5p bnQteDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5p bnQteDMubGV0c2VuY3J5cHQub3JnLzAoBgNVHREEITAfghFtYXRyaXgudGVjaGxp Yi5jeoIKdGVjaGxpYi5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLf EwEBATAoMCYGCCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCC AQMGCisGAQQB1nkCBAIEgfQEgfEA7wB2ALIeBcyLos2KIE6HZvkruYolIGdr2vpw 57JJUy3vi5BeAAABcKSgu5IAAAQDAEcwRQIhAOzOHlTvF/c2fasL3Pg5l9PTeF8X u+3T6jThrTGGQgg4AiAXbhxxJOANAQwWgkky5ofb/Yx9mNRZoJ58d4o8SLJaYQB1 AG9Tdqwx8DEZ2JkApFEV/3cVHBHZAsEAKQaNsgiaN9kTAAABcKSgvA4AAAQDAEYw RAIgf4uywb8uqQPnvJs1lRF/2oL8bIUaeONz/6DgBRIityUCIGDe5vnKCyrbqH0T pVZCn4CiC8RHbxuGqz5LjJcBePPEMA0GCSqGSIb3DQEBCwUAA4IBAQAWrP+izbsb iLv2aavU6Qq2Dx5gEOe4yJSTKODEKzQk5Ks5edMjb8cuXfyAfG1aWOjTSzK2q8Yu yfP3SfXSoXqkS8TVNCcTH/kcuqj1J8POQUeFWMTN0V/SoEWObrxrWxHlJuu/AKxv ImQb8lmxAjPRA7d36ZW/VNZ+6Q1Yps7Tpde5PbfRZJrsyOkPV9eaeDcYm756uWyv +fuApE6oJIVYP+vsu7WTogyYkEW/x2YC7YFwpE8WnTLvGiAALrAmIjB7npILGYNa Q4oRwJ6kDyelwhWmLYnlLRM2tukFxFSDDjrXaacO74R66F2QJK3vW4hdVdCxd0eS pHfk9c+KB/xt -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAsNjwk0SAxhvIBLHGW9yT bnImzwudNKczRRFc3FAMBvwagv5Y4NNhVPGJNAUMMBs3hQMZvdFctJSDJvQ2qsO6 vyuzQCT52mJUrUCN3HUD7H/Bw6U3Tnq58Ert9NhSYKUJvakiaH8dhcl7Sb2yOfp3 hlhPzYHJqU8CIqIJBPbfdCn+Tq5BefdelmwA4QnjSAPMdD7OVwCFhFMANd/qYoPC X6+eawwOIYWcY5AMh33WyZG5iGhdFnH1uwJiH6kujxn4HtZqKUzeiSkyIFXyWvgv hhzLP6CY3CEM7+lRjER77vKr1qcCKJEBoNRulEn944Vj+xYqsRKLdr60totF2SBO cMjn2V1kwP4JchrW2Nip+y8pPicWE8Rh+qu+55B/vXd+yPTk1R4RHTLAmznQ2Pym VTavjKwKuU/IEKi01kP5pv9qi9a1rOFOMO3Qjin1flyw2lp0PjOhMHz75Vd9GomP xQcTSZBXx7nF5m/8lwhSJPzgzUft83V4rIEKfc+disKaJOZ6BYQbcZl+nuUFSrKO SXOH4uGXMa9imF92d1HDslAYNaxiJq6EsXzkhDnphMhApgPwJHa+XdSgbWT/VZlK yT6hC/kWE7BAVyD4PnTa/Dq4oyAlOjzu9QAMI60/WjKIhukG3rNGQJD4vKYB0JWF NQXTma3e/riRCq94vIjdZT8CAwEAAQ== -----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 345253613854535011112386147628748458910658 . . . . . . . . [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 2020-03-04 07:19:22 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-02 07:19:22 +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 'matrix.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 721474531567154309248184228349485160926029658948847390860576256191548486901661951114297713427332920792053418600085970602614505018774644775660196832858800949368402818576903305900155626544715824130165384943722041895932627510588183854990640572511889264547904110443019388715113447936829993449281915807773193785657162005609022082105381935481561815814164733761575691354267225191971385717421027896157228076294942150159312243388052101217362577040766549919680641825647749097964500098820041823670652562317528631102415953437068457075336574581037773314467905117699383133913619438812659762515543405692865381856718722186947574318426405004603164782608059239196244593979929479790877581362218212236018022405413276883001032604885720249654592081097884990044791114167151694753543826526976578428079368930415118027066482261896968371910444563394873022042031606773201847787032793681092926014518178593979141394349284490448538661691273483323711233034732119974401335381419272364918827896897268388185052148932438933430012964425407642896368650968492013294875310195820892238962789213705259602429960262576704678037262424393372259726365774792652939207694091866193157270738080780617218012682671834318131584094087999626196413199037565344864837559532997924643906872639 . . . . . . . . . . . . . . . . . . . . [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) 039c09d1c5529e07f3fd2111eea5cd9edee32cc4 . . . . . . . . . . . . . . . . [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 (33 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'matrix.techlib.cz' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '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 (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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170a4a0bb920000040300473045022100ecce1e54ef17f7367dab0bdcf83997d3d3785f17bbedd3ea34e1ad31864208380220176e1c7124e00d010c16824932e687dbfd8c7d98d459a09e7c778a3c48b25a610075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d91300000170a4a0bc0e000004030046304402207f8bb2c1bf2ea903e7bc9b3595117fda82fc6c851a78e373ffa0e0051222b725022060dee6f9ca0b2adba87d13a556429f80a20bc4476f1b86ab3e4b8c970178f3c4 . . . . [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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