vt.pressbooks.pub

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:58:09:7e:40:0c:1a:cd:46:38:b3:e3:5d:63:18:9b:1c:48 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=vt.pressbooks.pub

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:58:09:7e:40:0c:1a:cd:46:38:b3:e3:5d:63:18:9b:1c:48
Serial Number (int): 291294324664722811711324081998023460854856
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bd:47:a5:d9:14:bc:af:51:9c:7e:11:b4:5f:76:28:83:36:8c:de:b9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 56:6f:b7:00:cd:58:ad:14:9a:1c:9b:97:28:24:b9:8f:76:22:a2:c4
Fingerprint (sha256): 38:93:47:14:ef:96:88:db:f2:3d:f0:a8:2f:36:17:f6:6b:7e:91:e9:96:80:5d:ac:87:6a:cc:2f:57:aa:2d:35

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 vt.pressbooks.pub

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for vt.pressbooks.pub

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

vt.pressbooks.pub

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Certificate

The complete raw certificate details for vt.pressbooks.pub 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 291294324664722811711324081998023460854856
 . . . . . . . . [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 2020-01-27 21:23:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-26 21:23:51 +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 'vt.pressbooks.pub'
 . . . . . . . . [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 859492486127951663091293350056021161109394202522002729493913342063343386497643672904231033228666474466805146978486799238158036736060960096471703304078865614059542150445669347402118124239483274333636319710584417005868946170523594936147171007568174036201809645792418866005771915734597016403612036719361859434383784093199294499681553758997601777106020293419627043927517168646422937615089720604524203614807152316705048830440123777245573726352054182642130993957843183437154269478079084932110027861418797400651142629887588351790234565658017999306559182743219587066183287384987631147754726452737793192675606486909245159857405904119766215941558883857394868047813145102287410273950310794138613274105327995133232943271278392447918552680510872632053500034419501948187029318116786184915036865447142995920935933314621966444046223767647845921732214829656691636165231439732068591945342071324963321265774359747607472905713830557552250229381309817764457277222164265090704845829295002569882211450999126211595904007629166743540460077836534180388778443172878633575872863952688564839854285172402448969239340383160058554048202238557422623379466441501538885730229002826757109687363320855241157750566006730865677440329849413312195676535963723232635370219311
 . . . . . . . . . . . . . . . . . . . . [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)
							bd47a5d914bcaf519c7e11b45f762883368cdeb9
 . . . . . . . . . . . . . . . . [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 'vt.pressbooks.pub'
 . . . . . . . . . . . . . . . . [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)
							00ef007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016fe91a97bc00000403004630440220501665eca4a064442cde25dd86a949f49273ebb08296b9cc55a91e2e5e56b3be02204ca4bc77a485b4db3a5a23f7b56ee11eac215a4c3928ba93705df4c6704d3b2300760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fe91a9806000004030047304502210092ddca0b179ef11f4b5135bc2aa471a6e3a796b750a28e0c762f0e76e1f127c7022018723290a963954853a55dbffecc7dc26999e0c484978ac6657fe748d24e3d0a
 . . . . [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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