matrix.techlib.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:67:a2:1c:10:8e:a6:9a:95:65:37:06:0e:de:cd:e0:a0:b0 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=matrix.techlib.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:67:a2:1c:10:8e:a6:9a:95:65:37:06:0e:de:cd:e0:a0:b0
Serial Number (int): 383713708175347357796965716800899735658672
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: b7:81:22:2c:ee:47:03:9a:85:24:cb:cc:b5:57:0c:e3:a5:4e:a7:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 2e:0a:c5:cc:ab:b8:62:e8:f3:6d:af:b6:8e:b0:cf:c7:30:df:3b:d8
Fingerprint (sha256): 06:32:e1:72:cc:79:a0:d3:a7:37:34:c8:63:30:44:89:0c:38:b4:69:30:e3:58:1a:fb:ec:58:a9:cf:98:d9:be

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 matrix.techlib.cz

1

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

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Certificate

The complete raw certificate details for matrix.techlib.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 383713708175347357796965716800899735658672
 . . . . . . . . [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 2019-05-14 23:00:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-12 23:00:08 +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 917069906349190513455564591546414835462501711065694293547167394342216714031280053699055115975944460683810724021680527907434912520673275267684480040472438233297153521690708896857771564306795998102063502502581714449274586012566855944814129741411671376445000583899157112751925279388723115432091523542272767598710210584959888847613264010279565825986134949014314255425531350780969229193534643914697325061460331534555181444146872323795976419850977122711952035266921933810575174049957704881516043243304123115095326739527871085156233814058146176868059565123176189288246571575361623959391398229830018998270209641875636518952437299803493347405921967792542571898042609414065807670944381344291965962321485662807041986558694184582726971708774748404956197818752299583444261613117675241688057371765694412466038840622186640423646192299562327064662417530190754997506800609247431254465283183419964192681620936140085121818676607419556043902411935683473045798693024061497054342463067764581636086707324676779428266613178119947870162181153787048794293675613665307089140237143813055396941020196403422052486359908825415611635364488553699916584825966249393589614327216447959550263974794486158918400971459443329389351734805720953882961629542348582676044303253
 . . . . . . . . . . . . . . . . . . . . [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)
							b781222cee47039a8524cbccb5570ce3a54ea7c5
 . . . . . . . . . . . . . . . . [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 (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'matrix.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016ab8ca0449000004030047304502207afc96f4707a24fc9c41cad06992eba02052a9b5ca8444efdfff32730d56ef52022100a7b0cb6aa844dd1f2fad42c5d4b3d6bf578d1f7e3c585cd34b89c63bb54194ee007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016ab8ca0446000004030047304502206e56d7745ffbb2307cdfe6876ea8b85674757593dd8bb66820212cdee87badbb022100b1c93de6e4f95da9611c3b3cac89cedf55d611cf2e7698e02756be3e73da9129
 . . . . [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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