cards.techlib.cz
Issued by R3
About this certificate
This digital certificate with serial number 04:3e:9f:66:2f:4f:38:ac:bd:b1:81:b3:60:be:d5:da:04:c5 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=cards.techlib.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:3e:9f:66:2f:4f:38:ac:bd:b1:81:b3:60:be:d5:da:04:c5Serial Number (int): 369758528301298359699282685623021860422853
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 25:1c:e1:f1:5c:29:3b:73:99:66:ae:e8:05:d5:7c:24:0f:dd:6a:79
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6
Fingerprint (sha1): 20:d4:62:a0:13:ce:04:a3:ae:d7:8c:36:9b:62:43:c4:67:29:7d:73
Fingerprint (sha256): 6b:95:53:ac:d4:fe:2d:6e:73:d8:07:c2:b0:68:13:31:5a:4b:ff:25:58:f4:86:c7:72:48:8a:b3:5a:96:66:6a
Issuing Certificate URL: http://r3.i.lencr.org/
Revocation information
OCSP Server: http://r3.o.lencr.orgCheck the revocation status for certificate cards.techlib.cz
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for cards.techlib.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
cards.ntkcz.cz
cards.techlib.cz
cards.techlib.cz
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Certificate
The complete raw certificate details for cards.techlib.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFODCCBCCgAwIBAgISBD6fZi9POKy9sYGzYL7V2gTFMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yMzAzMjEwNjI0NDVaFw0yMzA2MTkwNjI0NDRaMBsxGTAXBgNVBAMT EGNhcmRzLnRlY2hsaWIuY3owggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB AQDGSSYgvfDohMKDe6wDmOAytZaSKTP2Xkpofp8oUn6J4cGRRfAK5giKyhXljvxZ y2/eY3jkO8caxTpWSHsXmcv8pRcwX+EvczsWbfBlw8bNUqzl5TVXW9WtTjRcEiJo p58Lwm8LdVXK/A4iqZC4UnXMTpqcaphpgL/cHYEY65I4AhogWIVYCq+gNPBeqmiI NqDYVbbepHF/gKt7qZHExCPK1jgZO4EfnGYLZuBpx4Df2T9Z788wkzf4jBcvQoAN F3ZAyESDVaB/hCsciKM9Nvjmqtj6QsjbvqlMlVY6LwO5J5GVaMejqVhQeE1skPTn NxoHpVMxCloRZdSOh9oZ88TBAgMBAAGjggJdMIICWTAOBgNVHQ8BAf8EBAMCBaAw HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYD VR0OBBYEFCUc4fFcKTtzmWau6AXVfCQP3Wp5MB8GA1UdIwQYMBaAFBQusxe3WFbL rlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDov L3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5v cmcvMCsGA1UdEQQkMCKCDmNhcmRzLm50a2N6LmN6ghBjYXJkcy50ZWNobGliLmN6 MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUH AgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBgYKKwYBBAHWeQIEAgSB 9wSB9ADyAHcAtz77JN+cTbp18jnFulj0bF38Qs96nzXEnh0JgSXttJkAAAGHAw5e bAAABAMASDBGAiEA5wp84vt0NoFPsZFTjY4aIPIPWDlQIIgU1Sofosf7kdICIQD8 FzQR8RO70vl+DrRPa9Y74b/gS4SgmPRBOwJFnz5xrgB3AK33vvp8/xDIi509nB4+ GGq0Zyldz7EMJMqFhjTr3IKKAAABhwMOXqMAAAQDAEgwRgIhAI/9vEke7HWeHp9r uRQW+rVSasvBMpL4yNFYoXYchfYCAiEA4PmRI69wozYxRa9l20p0HhuJxVKHr38E P+sb2BN55powDQYJKoZIhvcNAQELBQADggEBAEjiUFe66BRBGpxjHljvZzs4a6Vb TXw2svPziXUt2e26tOw2uf858np39lfS7e3mQr/t9n1JfzuO76kvpTgzVo81ddYQ 8cvXgAkB+vHEIfF6MMyQSs23mHVIb0VypBqlyeIXMp69zwAejAiggWimrFLJc64t P2SOOzw7fAcTgpSna6fHylLd1E4C6JORg8M3++1biqwSVjVNCzpLsJHrGwEZkpSC nYDth85FH8NGr1bON4+xL+d8dptR2u6iHsfBGKxQ32VLKZIje5+2p4fArSpMQiOB ZHuK37Gin+vaYmwTGk5xV3SxntKatFOkPDUQtpCYlRr7usVTu8a4WhDUlGM= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxkkmIL3w6ITCg3usA5jg MrWWkikz9l5KaH6fKFJ+ieHBkUXwCuYIisoV5Y78Wctv3mN45DvHGsU6Vkh7F5nL /KUXMF/hL3M7Fm3wZcPGzVKs5eU1V1vVrU40XBIiaKefC8JvC3VVyvwOIqmQuFJ1 zE6anGqYaYC/3B2BGOuSOAIaIFiFWAqvoDTwXqpoiDag2FW23qRxf4Cre6mRxMQj ytY4GTuBH5xmC2bgaceA39k/We/PMJM3+IwXL0KADRd2QMhEg1Wgf4QrHIijPTb4 5qrY+kLI276pTJVWOi8DuSeRlWjHo6lYUHhNbJD05zcaB6VTMQpaEWXUjofaGfPE wQIDAQAB -----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 369758528301298359699282685623021860422853 . . . . . . . . [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 'R3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-03-21 06:24:45 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-06-19 06:24:44 +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 'cards.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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 25031255468552667439481160367564736650668811953487000445538955914583331659360092897507304541861629773411547378449833689762544170725020750702238466578416689569829442996181967581268951754930084856867745716657764825988778768665483440534019299160668452706406381866792135538018678224555386399690421561454605512082329191142751593458268753625743557695535735526966651129844615278936513115163497543582029004755157808941970244646661962787488160986030942309020261159271125949469476792345282782939181168362850755222777648174057629926381779102701869831156368985901163648156515574669203123508800104786277397597347462599948799034561 . . . . . . . . . . . . . . . . . . . . [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) 251ce1f15c293b739966aee805d57c240fdd6a79 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (36 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cards.ntkcz.cz' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cards.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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000187030e5e6c0000040300483046022100e70a7ce2fb7436814fb191538d8e1a20f20f583950208814d52a1fa2c7fb91d2022100fc173411f113bbd2f97e0eb44f6bd63be1bfe04b84a098f4413b02459f3e71ae007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000187030e5ea300000403004830460221008ffdbc491eec759e1e9f6bb91416fab5526acbc13292f8c8d158a1761c85f602022100e0f99123af70a3363145af65db4a741e1b89c55287af7f043feb1bd81379e69a . . . . [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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