doc.techlib.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:4b:cd:60:d1:55:55:d2:40:49:e9:c0:86:82:c5:2c:a1:92 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=doc.techlib.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:4b:cd:60:d1:55:55:d2:40:49:e9:c0:86:82:c5:2c:a1:92Serial Number (int): 374243315691530259824409744477454057906578
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: bd:ba:2d:ea:78:85:06:2f:ea:4c:93:d4:15:f1:8d:5d:37:d8:ce:c4
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 04:1e:e8:48:e5:02:b0:a8:3b:18:55:cc:57:80:dc:0a:2a:03:66:64
Fingerprint (sha256): 22:78:7d:66:75:a9:e2:24:e1:14:da:87:44:c9:13:84:ec:30:3d:f2:c0:90:7e:bc:2d:8e:b8:7d:f8:84:4f:a4
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate doc.techlib.cz
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for doc.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
doc.techlib.cz
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Certificate
The complete raw certificate details for doc.techlib.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIF/zCCBOegAwIBAgISBEvNYNFVVdJASenAhoLFLKGSMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNzA3MzEyMTAxMDBaFw0x NzEwMjkyMTAxMDBaMBkxFzAVBgNVBAMTDmRvYy50ZWNobGliLmN6MIICIjANBgkq hkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAz2GNJ1lJwv3ywKOZ1DQ9cLawwpDffdzm zMCVao18Mh+urhk3NRIaqXX9eQT0MTeWwUCoB4dIycO/fFCfoPGz7nS90Nw8sF07 9VbU6UAKHbFSrMue4yzYF8X4Ff1/idDTgRDyGboE+E+1i5Pc4xwJoPemiHRCSXrZ S459AX6MEPsHA8MVOB7ot4LbvYF/5HZ+8uWEJ0qIT1yU4gzEfrUoCq7TOorjvJxr LyQiCTFUWQlUz3XBF7CLfPG6k3HBOVsJZg/6h3T/z5ocentIjX3M/2qYJ0BmUAbi QSJis7IjWqyvp5T361zqAs7HBotYBbZL+WHzuCzAJmPbcpoTicVcOByeJ7P1V5OO DQ4+ZZL9xGbnyXo4Rt7Oo38fMtKJstw0V4Ljyd3iGhB+bp9/yAg7DQbhKHfcgHZW 2pWnl1sdH4Tp9Hsmxtawe+6vBqufpy605bCyMyxGEXwBd7s1HTMf/wQ2Hhk5gQbT odw2x7A7mY6urJOvj+cGPneVKOVEjebQKRSt2tlpv0cc7bebGtxkU+tSgIuMpwNj PEKaE9Hvc/T2K5/EkAnotsKTz6y7VyTIYzG8G6SHKdF15v5e6Z1SuuXVzVma5zTh ZMrWF2yTHhm3Y8eorGmO0zu0eWZc09EDEbmzs5TlztUhcGhcfQaFWbp49zbTdgF3 4G0fT4mBuB0CAwEAAaOCAg4wggIKMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAU BggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUvbot 6niFBi/qTJPUFfGNXTfYzsQwHwYDVR0jBBgwFoAUqEpqYwR93brm0Tm3pkVl7/Oo 7KEwbwYIKwYBBQUHAQEEYzBhMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcC5pbnQt eDMubGV0c2VuY3J5cHQub3JnMC8GCCsGAQUFBzAChiNodHRwOi8vY2VydC5pbnQt eDMubGV0c2VuY3J5cHQub3JnLzAZBgNVHREEEjAQgg5kb2MudGVjaGxpYi5jejCB /gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC3xMBAQEwgdYwJgYIKwYB BQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIGrBggrBgEFBQcCAjCB ngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUgcmVsaWVkIHVwb24gYnkg UmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29yZGFuY2Ugd2l0aCB0aGUg Q2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBzOi8vbGV0c2VuY3J5cHQu b3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQBivEppyZN/t6lqN1lU hi/AP25KbtSSOSXH+3kHrY3ZhtqnNDsLcm31gE6WmQI/01IwLaMwMXG+LsCObdf4 L9PzYVD6zSkQ96sY9rMYwgQxYRg6Kod5KCv7AMmSPPtoni0A75uk85s4QV7OemOr Fbh7UcWHlnw9+zmGvrZulG+nY/vA9+p3yPHJoIXIzQQf+M69JGHvXUhAEeqL1x1v GW4QirzVYCaRk36eHXfccs+/Hl7Q6N91SyDnHN/udwp/2a3MRbgNAgloPQfbe462 Nd9d5pjZEsV7uMpa/OOLXpb/wTT4W8vkw/aV+eRjDm29TUFSR80emCwq1ZKTfkzS Wplx -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAz2GNJ1lJwv3ywKOZ1DQ9 cLawwpDffdzmzMCVao18Mh+urhk3NRIaqXX9eQT0MTeWwUCoB4dIycO/fFCfoPGz 7nS90Nw8sF079VbU6UAKHbFSrMue4yzYF8X4Ff1/idDTgRDyGboE+E+1i5Pc4xwJ oPemiHRCSXrZS459AX6MEPsHA8MVOB7ot4LbvYF/5HZ+8uWEJ0qIT1yU4gzEfrUo Cq7TOorjvJxrLyQiCTFUWQlUz3XBF7CLfPG6k3HBOVsJZg/6h3T/z5ocentIjX3M /2qYJ0BmUAbiQSJis7IjWqyvp5T361zqAs7HBotYBbZL+WHzuCzAJmPbcpoTicVc OByeJ7P1V5OODQ4+ZZL9xGbnyXo4Rt7Oo38fMtKJstw0V4Ljyd3iGhB+bp9/yAg7 DQbhKHfcgHZW2pWnl1sdH4Tp9Hsmxtawe+6vBqufpy605bCyMyxGEXwBd7s1HTMf /wQ2Hhk5gQbTodw2x7A7mY6urJOvj+cGPneVKOVEjebQKRSt2tlpv0cc7bebGtxk U+tSgIuMpwNjPEKaE9Hvc/T2K5/EkAnotsKTz6y7VyTIYzG8G6SHKdF15v5e6Z1S uuXVzVma5zThZMrWF2yTHhm3Y8eorGmO0zu0eWZc09EDEbmzs5TlztUhcGhcfQaF Wbp49zbTdgF34G0fT4mBuB0CAwEAAQ== -----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 374243315691530259824409744477454057906578 . . . . . . . . [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 2017-07-31 21:01:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-10-29 21:01:00 +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 'doc.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 846040911593978037801471291482237118283465410294734840375354002523240693907845253830237697317680091289628677511160956179375297991869957363883183524353265724049498590185356968086242270475354301494540189427242605784877022022194549058542959554584826052647076224419667591660101811010873996927242431235690821254513192607957597041764095250424268864217612613199455192168650453628154212467484333666024090205438080772103359450020618836164056998349079320087730211149852618278130419708272554847440391317807818406716056747988465411815041453632209652768219061045051654408071823987382419151879778316249608848530639775367687596380626654639199246162669941456001100771960563739156694343475660439645584202319124946511894607792516837687926174220503162981915483864572967099720027816926492134968055242758399525997770561385808192356414228278005774856893619900478460728334148401928001642819028502537682578834888210060991766999438622666828622027042658870522210434993846114131432866990919114305537343576722272051051037864823039421030158284007553705959690649957521352896715717615099009695814322852932808472790180584529185965131287558625946066510485823599757722856211286239003793935790207819068848980061399140729275432655991110462677662352406637315725545551901 . . . . . . . . . . . . . . . . . . . . [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) bdba2dea7885062fea4c93d415f18d5d37d8cec4 . . . . . . . . . . . . . . . . [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 (18 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'doc.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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